High Speed CAN Transceiver with Wake and Failure Detection

Transcription

1 High Speed CAN Transceiver wih Wake and Failure Deecion 1 Overview Feaures HS CAN Transceiver wih daa ransmission rae up o 1 MBaud Complian o ISO Very low power consumpion in Sleep mode Bus Wake-Up and local Wake-Up Inhibi oupu o conrol exernal circuiry Spli erminaion o sabilize he recessive level Separae V IO inpu o adap differen micro conroller supply volages Separae oupu for failure diagnosis Opimized for low elecromagneic emission (EME) Opimized for a high immuniy agains elecromagneic inerference (EMI) Very high ESD robusness, ±9 kv according o IEC Proeced agains auomoive ransiens Receive-Only mode for node failure analysis TxD ime-ou funcion and RxD recessive clamping wih failure indicaion TxD o RxD shor circui recogniion wih failure indicaion CANH and CANL shor circui recogniion wih failure indicaion Bus dominan clamping diagnosis Under-volage deecion a V CC, V IO and V S Power-Up and Wake-Up source recogniion Shor circui proof and Over-Temperaure proecion Green Produc (RoHS complian) AEC Qualified Applicaions Mixed power supply HS-CAN neworks Descripion As a successor of he TLE6251G, he TLE6251-2G is designed o provide an excellen passive behavior in Power Down. This feaure makes he TLE6251-2G exremely suiable for mixed power supply HS-CAN neworks. The TLE6251-2G provides differen operaion modes wih a very low quiescen curren in Sleep mode. Based on he high symmery of he CANH and CANL signals, he TLE6251-2G provides a very low level of elecromagneic Daa Shee 1 Rev

2 High Speed CAN Transceiver wih Wake and Failure Deecion Overview emission (EME) wihin a broad frequency range. The TLE6251-2G is inegraed in a RoHS complian PG-DSO-14 package and fulfills or exceeds he requiremens of he ISO The TLE6251G and he TLE6251-2G are fully pin compaible and funcion compaible. Type Package Marking TLE6251-2G PG-DSO-14 TLE6251-2G Daa Shee 2 Rev. 1.22

3 High Speed CAN Transceiver wih Wake and Failure Deecion Table of Conens 1 Overview Block Diagram Pin Configuraion Pin Assignmen Pin Definiions and Funcions Funcional Descripion High Speed CAN Physical Layer Operaion Modes Normal Operaion Mode Receive-Only Mode Sand-By Mode Go-To-Sleep Command Sleep Mode Wake-Up Funcions Remoe Wake-Up Local Wake-Up Mode Change via he EN and NSTB pin Fail Safe Feaures CAN Bus Failure Deecion Local Failures TxD Time-Ou Feaure TxD o RxD Shor Circui Feaure RxD Permanen Recessive Clamping Bus Dominan Clamping Over-Temperaure Deecion Under-Volage Deecion Under-Volage even on V CC and V IO Under-Volage Even on V S Volage Adapaion Spli Circui Diagnosis-Flags a NERR and RxD General Produc Characerisics Absolue Maximum Raings Funcional Range Thermal Resisance Elecrical Characerisics Funcional Device Characerisics Diagrams Applicaion Informaion Applicaion Example ESD Robusness according o IEC Volage Drop over he INH Oupu Mode Change o Sleep mode Daa Shee 3 Rev. 1.22

4 High Speed CAN Transceiver wih Wake and Failure Deecion 11.5 Furher Applicaion Informaion Package Oulines Revision Hisory Daa Shee 4 Rev. 1.22

5 High Speed CAN Transceiver wih Wake and Failure Deecion Block Diagram 2 Block Diagram V S SPLIT 11 V CC 10 7 INH V CC CANH CANL Oupu Sage Driver Temp.- Proecion Mode Conrol Logic + imeou 6 14 EN NSTB 5 V IO V CC /2 Diagnosis & Failure Logic 1 TxD Normal Receiver Wake-Up Deecion V IO Low Power Receiver RxD Oupu Conrol 8 NERR V S V IO WK 9 Wake-Up Comparaor 4 RxD 2 GND Figure 1 Block Diagram Daa Shee 5 Rev. 1.22

6 High Speed CAN Transceiver wih Wake and Failure Deecion Pin Configuraion 3 Pin Configuraion 3.1 Pin Assignmen TxD 1 14 NSTB GND 2 13 CANH V CC 3 12 CANL RxD 4 11 SPLIT V IO 5 10 V S EN 6 9 WK INH 7 8 NERR Figure 2 Pin Configuraion 3.2 Pin Definiions and Funcions Table 1 Pin Definiions and Funcions Pin Symbol Funcion 1 TxD Transmi Daa Inpu; inegraed pull-up resisor o V IO, low for dominan sae. 2 GND Ground 3 V CC Transceiver Supply Volage; 100 nf decoupling capacior o GND recommend. 4 RxD Receive Daa Oupu; Low in dominan sae. Oupu volage level dependen on he V IO supply 5 V IO Logic Supply Volage; Digial Supply Volage for he logic pins TxD, RxD, EN, NERR and NSTB; Usually conneced o he supply volage of he exernal microconroller; 100 nf decoupling capacior o GND recommend. 6 EN Mode Conrol Inpu; Inegraed pull-down resisor; High for Normal Operaion mode. Daa Shee 6 Rev. 1.22

7 High Speed CAN Transceiver wih Wake and Failure Deecion Pin Configuraion Table 1 Pin Definiions and Funcions (con d) Pin Symbol Funcion 7 INH Inhibi Oupu; Open drain oupu o conrol exernal circuiry; High impedance in Sleep mode 8 NERR Error Flag Oupu; Failure and Wake-Up indicaion oupu, acive low Oupu volage level depends on he V IO supply 9 WK Wake-Up Inpu; Local Wake-Up inpu; Wake-Up inpu sensiive o a level change in boh direcions, high o low and vice versa. 10 V S Baery Volage Supply; 100 nf decoupling capacior o GND recommend. 11 SPLIT Spli Terminaion Oupu; Sabilizaion oupu o suppor he recessive volage level of he CAN bus lines. 12 CANL CAN Bus Low Level I/O; Low in dominan sae 13 CANH CAN Bus High Level I/O; High in dominan sae 14 NSTB Sand-By Conrol inpu; Inegraed pull-down resisor; High for Normal Operaion mode. Daa Shee 7 Rev. 1.22

8 High Speed CAN Transceiver wih Wake and Failure Deecion Funcional Descripion 4 Funcional Descripion CAN is a serial bus sysem ha connecs microconrollers, sensor and acuaors for real-ime conrol applicaions. The usage of he Conrol Area Nework (abbreviaed CAN) wihin road vehicles is described by he inernaional sandard ISO According o he 7 layer OSI reference model he physical layer of a CAN bus sysem specifies he daa ransmission from one CAN node o all oher available CAN nodes inside he nework. The physical layer specificaion of a CAN bus sysem includes all elecrical and mechanical specificaions of a CAN nework. The CAN ransceiver is par of he physical layer specificaion. Several differen physical layer sandards of CAN neworks have been developed over he las years. The TLE6251-2G is a High Speed CAN ransceiver wih dedicaed Wake-Up funcions. High Speed CAN Transceivers wih Wake- Up funcions are defined by he inernaional sandard ISO High Speed CAN Physical Layer TxD V IO CAN_H CAN_L V CC V IO = Logic Supply V CC = Transceiver Supply TxD = Inpu from he Microconroller RxD = Oupu o he Microconroller CANH = Volage on CANH Inpu/Oupu CANL = Volage on CANL Inpu/Oupu V DIFF = Differenial Volage V DIFF = V CANH V CANL V DIFF Dominan V DIFF = ISO Level Dominan Recessive V DIFF = ISO Level Recessive RxD V IO Figure 3 High Speed CAN Bus Signals and Logic Signals Daa Shee 8 Rev. 1.22

9 High Speed CAN Transceiver wih Wake and Failure Deecion Funcional Descripion The TLE6251-2G is a High Speed CAN ransceiver, operaing as an inerface beween he CAN conroller and he physical bus medium. A High Speed CAN nework (abbreviaed HS CAN) is a wo wire differenial nework which allows daa ransmission raes up o 1 MBaud. Characerisic for a HS CAN nework are he wo CAN bus saes dominan and recessive (see Figure 3). A HS CAN nework is a Carrier Sense Muliple Access nework wih Collision Deecion. This means, every paricipan of he CAN nework is allowed o place is message on he same bus media simulaneously. This can cause daa collisions on he bus, which migh corrup he informaion conen of he daa sream. In order avoid he loss of any informaion and o prioriize he messages, i is essenial ha he dominan bus signal overrules he recessive bus signal. The inpu TxD and he oupu RxD are conneced o he microconroller of he ECU. As shown in Figure 1, he HS CAN ransceiver TLE6251-2G has a receive uni and a oupu sage, allowing he ransceiver o send daa o he bus medium and monior he daa from he bus medium a he same ime. The HS CAN TLE6251-2G convers he serial daa sream available on he ransmi daa inpu TxD ino a differenial oupu signal on CANbus. The differenial oupu signal is provided by he pins CANH and CANL. The receiver sage of he TLE6251-2G moniors he daa on he CAN bus and convers hem o a serial daa sream on he RxD pin. A low signal on he TxD pin creaes a dominan signal on he CAN bus, followed by a low signal on he RxD pin (see Figure 3). The feaure, broadcasing daa o he CAN bus and lisening o he daa raffic on he CAN bus simulaneous is essenial o suppor he bi o bi arbiraion on CAN neworks. The volage levels for a HS CAN on he bus medium are defined by he ISO /-5 sandards. Wheher a daa bi is dominan or recessive, depends on he volage difference beween CANH and CANL: V DIFF = V CANH - V CANL To ransmi a dominan signal o he CAN bus he differenial signal V DIFF is larger or equal o 1.5 V. To receive a recessive signal from he CAN bus he differenial signal V DIFF is smaller or equal o 0.5 V. The volage level on he digial inpu TxD and he digial oupu RxD is deermined by he power supply level a he pin V IO. Depending on volage level a he V IO pin, he signal levels on he logic pins (EN, NERR, NSTB, TxD and RxD) are compaible o microconrollers wih 5 V or 3.3 V I/O supply. Usually he V IO power supply of he ransceiver is conneced o same power supply as I/O power supply of he microconroller. Parially supplied CAN neworks are neworks where he paricipans have a differen power supply saus. Some nodes are powered up, oher nodes are no powered, or some oher nodes are in a Low-Power mode, like Sleep mode for example. Regardless on he supply saus of he HS CAN node, each paricipan which is conneced o he common bus, shall no disurb he communicaion on he bus media. The TLE6251-2G is designed o suppor parially supplied neworks. In Power Down condiion, he resisors of he Normal Receiver are swiched off and he bus inpu on he pins CANH and CANL is high resisive. Daa Shee 9 Rev. 1.22

10 High Speed CAN Transceiver wih Wake and Failure Deecion Operaion Modes 5 Operaion Modes Five differen operaion modes are available on TLE6251-2G. Each mode wih specific characerisics in erms of quiescen curren, daa ransmission or failure diagnosic. For he mode selecion he digial inpu pins EN and NSTB are used. Boh digial inpu pins are even riggered. Figure 4 illusraes he differen mode changes depending on he saus of he EN and NSTB pins. A mode change via he mode selecions pins EN and NSTB is only possible when he power supplies V CC, V IO and V S are acive. Normal Operaion mode EN -> 1 NSTB -> 1 Power Down EN -> 1 NSTB = 1 EN NSTB INH 1 1 On EN -> 0 NSTB = 1 EN = 1 NSTB ->1 EN -> 0 NSTB -> 0 Sar Up Supply V S Supply V CC wihin < UV(VCC) Supply V IO wihin < UV(VIO) Receive Only mode EN = 0 NSTB -> 0 Sand-By mode EN NSTB INH 0 1 On EN = 0 NSTB -> 1 EN NSTB INH 0 0 On V S > V S,Pon EN = 0 NSTB -> 1 V CC & V IO ON EN -> 0 NSTB -> 1 EN -> 1 NSTB -> 0 EN = 1 NSTB -> 0 Go-To-Sleep command EN NSTB INH 1 0 On EN -> 1 NSTB = 0 EN -> 0 < hslp NSTB = 0 Under-volage on V S V S < V S,Poff EN -> 0 > hslp NSTB = 0 hslp Timing imporan for mode selecion EN -> 1 NSTB -> 1 V CC & V IO ON Sleep mode EN NSTB INH 0 0 Off Wake-Up Even Bus-Wake: > BUSdom Local-Wake: > Wake V CC < V CC,UV > UV(VCC) V IO < V IO,UV > UV(VIO) Under-volage on V CC Under-volage on V IO Figure 4 Operaion Modes Daa Shee 10 Rev. 1.22

11 High Speed CAN Transceiver wih Wake and Failure Deecion Operaion Modes In Sleep mode he power supply V CC and he logic power supply V IO are usually urned off. A Wake-Up even, via he CAN bus or he local Wake-Up pin, shifs he device from Sleep mode ino Sand-By mode. The following operaion modes are available on he TLE6251-2G: Normal Operaion mode Receive-Only mode Sand-By mode Sleep mode Go-To-Sleep command Depending on he operaion mode, he oupu driver sage, he receiver sage, he spli erminaion and he bus biasing are acive or inacive. Table 2 shows he differen operaion modes depending on he logic signal on he pins EN and NSTB wih he relaed saus of he INH pin, he SPLIT pin and he bus biasing. Table 2 Overview Operaion Modes Operaion mode EN NSTB INH Bus Bias SPLIT Normal Operaion 1 1 V S V CC /2 V CC /2 Receive-Only 0 1 V S V CC /2 V CC /2 Sand-By 0 0 V S GND Floaing Go-To-Sleep 1 0 V S GND Floaing Sleep 0 0 Floaing GND Floaing Power Down 0 0 Floaing Floaing Floaing 5.1 Normal Operaion Mode In Normal Operaion mode he HS CAN ransceiver TLE6251-2G sends he serial daa sream on he TxD pin o he CAN bus while a he same ime he daa available on he CAN bus is moniored on he RxD oupu pin. In Normal Operaion mode all funcions of he TLE6251-2G are acive: The oupu sage is acive and drives daa from he TxD o he CAN bus. The normal receiver uni is acive and provides he daa from he CAN bus o he RxD pin. The low power receiver and he bus Wake-Up funcion is inacive. The local Wake-Up pin is disabled. The INH pin is conneced o V S. The RxD pin is low for a dominan bus signal and high for a recessive bus signal The SPLIT pin is se o V CC /2. The bus basing is se o V CC /2. The failure deecion is acive and failures are indicaed a he NERR pin. (see Chaper 8). The under-volage deecion on he all 3 power supplies V CC, V IO and V S is acive. The HS CAN ransceiver TLE6251-2G eners Normal Operaion mode by seing he mode selecion pins EN and NSTB o high (see Table 2 or Figure 4). 5.2 Receive-Only Mode The Receive-Only mode can be used o es he connecion of he bus medium. The TLE6251-2G can sill receive daa from he bus, bu he oupu sage is disabled and herefore no daa can be sen o he CAN bus. All oher funcions are acive: Daa Shee 11 Rev. 1.22

12 High Speed CAN Transceiver wih Wake and Failure Deecion Operaion Modes The oupu sage is disabled and daa which is available on he TxD pin will be blocked and no communicaed o he CAN bus. The normal receiver uni is acive and provides he daa which is available on he CAN bus o he RxD pin. The INH pin is conneced o V S. The RxD pin is low for a dominan bus signal and high for a recessive bus signal. The SPLIT pin is se o V CC /2. The bus biasing is se o V CC /2. The low power receiver and he bus Wake-Up funcion is inacive. The local Wake-Up pin WK is disabled. The failure diagnosic is acive and local failures are indicaed a he NERR pin (see Chaper 8). The under-volage deecion on he all 3 power supplies V CC, V IO and V S is acive. The HS CAN ransceiver TLE6251-2G eners Receive-Only mode by seing he EN pin o low and he NSTB o high (see Table 2 or Figure 4). 5.3 Sand-By Mode Afer he power-up sequence he TLE6251-2G eners auomaically ino Sand-By mode. Sand-By mode is an idle mode of he TLE6251-2G wih opimized power consumpion. In Sand-By mode he TLE6251-2G can no send or receive any daa. The oupu driver sage and he normal receiver uni are disabled. Boh CAN bus pins, CANH and CANL are conneced o GND and he Spli erminaion oupu is floaing. The following funcions are available in Sand-By mode: The oupu sage is disabled. The normal receiver uni is disabled. The low power receiver is acive and moniors he CAN bus. In case of a message on he CAN bus he TLE6251-2G ses an inernal Wake-Up flag. If he power supplies V CC and V IO are acive, he Wake-Up even is indicaed by he RxD pin and he NERR pin (see Chaper 8). Afer firs power-up or afer an undervolage even on V S a wake-up is no signaled on RxD and NERR pin. The local Wake-Up pin is acive and a local Wake-Up even is indicaed by he RxD and NERR pin, if he power supplies V CC and V IO are acive (see Chaper 8). The INH oupu is acive and se o V S. Through he inernal resisors R I (see Figure 1), he pins CANH and CANL are conneced o GND. If he power supplies V CC and V IO are acive, he RxD pin indicaes he Wake-Up evens. The TxD pin is disabled The failure diagnosic is disabled. The under-volage deecion on he all 3 power supplies V CC, V IO and V S is acive. The TLE6251-2G deecs a Power-Up even and indicaes i a he NERR pin (see Chaper 8). There are several ways o ener he Sand-By mode (see Figure 4): Afer he sar-up sequence he device eners per defaul Sand-By mode. Mode changes are only possible when V CC and V IO are presen. The device is in Sleep mode and a Wake-Up even occurs. The device is in he Go-To-Sleep command and he EN pin goes low before he ime < hslp has expired. The device is in Normal Operaion mode or Receive-Only mode and he EN pin and NSTB pin are se o low. Daa Shee 12 Rev. 1.22

13 High Speed CAN Transceiver wih Wake and Failure Deecion Operaion Modes An under-volage even occurs on he power supply V S. In case of an under-volage even, he TLE6251-2G device always changes o Sand-By mode regardless in which mode he device currenly operaes. 5.4 Go-To-Sleep Command The Go-To-Sleep command is a ransiion mode allowing exernal circuiry like a microconroller o prepare he ECU for he Sleep mode. The TLE6251-2G says in he Go-To-Sleep command for he maximum ime = hslp, afer exceeding he ime hslp he device changes ino Sleep mode. A mode change ino Sleep mode is only possible via he Go-To-Sleep command. During he Go-To-Sleep command he following funcions on he TLE6251-2G are available: The oupu driver sage is disabled. The normal receiver uni is disabled. The low power receiver is acive and moniors he CAN bus. In case of a message on he CAN bus he TLE6251-2G ses an inernal Wake-Up flag. The local Wake-Up pin is acive and can deec a local Wake-Up even. The INH oupu is acive and se o V S. Through he inernal resisors R I (see Figure 1), he pins CANH and CANL are conneced o GND. The TxD pin is disabled. The failure diagnosic is disabled. The under-volage deecion on all 3 power supplies V CC, V IO and V S is acive. Seing he NSTB pin o low, while he EN signal remains a high, acivaes he Go-To-Sleep command. The Go-To-Sleep command can be enered from Normal Operaion mode, Receive-Only mode and from Sand-By mode. 5.5 Sleep Mode The Sleep mode is a power save mode. In Sleep mode he curren consumpion of he TLE6251-2G is reduced o a minimum while he device is sill able o Wake-Up by a message on he CAN bus or a local Wake-Up even on he pin WK. Mos of he funcions of he TLE6251-2G are disabled: The oupu driver sage is disabled. The normal receiver uni is disabled. The low power receiver is acive and moniors he CAN bus. In case of a message on he CAN bus he TLE6251-2G changes from Sleep mode o Sand-By mode and ses an inernal Wake-Up flag. The local Wake-Up pin is acive and in case of a signal change on he WK pin he operaion mode changes o Sand-By mode. The INH oupu is floaing. Through he inernal resisors R I (see Figure 1), he pins CANH and CANL are conneced o GND. If he power supplies V CC and V IO are presen, he RxD pin indicaes he Wake-Up even. The TxD pin is disabled The under-volage deecion on he power supply V S is acive and sends he device ino Sand-By mode in case of an under-volage even. There are only wo ways o ener Sleep mode: The device can acivae he Sleep mode via he mode conrol pins EN and NSTB. An under-volage even on he power supplies V CC and V IO changes he operaion mode o Sleep mode. In order o ener he Sand-By mode or he Sleep mode, he EN signal needs o be se o low a defined ime afer he NSTB pin was se o low. Imporan for he mode selecion is he iming beween he falling edge Daa Shee 13 Rev. 1.22

14 High Speed CAN Transceiver wih Wake and Failure Deecion Operaion Modes of he NSTB signal and he EN signal. If he logical signal on he EN pin goes low before he ransiion ime < hslp has been reached, he TLE6251-2G eners Sand-By mode and he INH pin remains conneced o he V S supply. In he case he logical signal on he EN pin goes low afer he ransiion ime > hslp, he TLE6251-2G eners ino Sleep mode simulaneous wih he expiraion of he ime window hslp and he INH becomes disconneced from he V S supply and is floaing. (see Figure 5). NSTB hslp EN INH Normal Operaion mode < hslp Go-To Sleep command Sand-By mode NSTB hslp EN > hslp INH Normal Operaion mode Go-To Sleep command Sleep mode Figure 5 Enering Sleep Mode or Sand-By Mode The signal on he CAN bus has no impac o mode changes. The operaion mode can be changed regardless of he CAN bus being in dominan sae or in recessive sae. Daa Shee 14 Rev. 1.22

15 High Speed CAN Transceiver wih Wake and Failure Deecion Wake-Up Funcions 6 Wake-Up Funcions There are several possibiliies for a mode change from Sleep mode o anoher operaion mode. Remoe Wake-Up via a message on he CAN bus. Local Wake-Up via a signal change on he pin WK. A saus change of he logical signals applied o he mode conrol pins EN and NSTB. An under-volage deecion on he V S power supply. In ypical applicaions he power supplies V CC and V IO are urned off in Sleep mode, meaning a mode change can only be caused by an exernal even, also called Wake-Up. In case he V CC and V IO power supply are available, a mode change can be simple caused by changing he saus on he mode conrol pins EN and NSTB. 6.1 Remoe Wake-Up A remoe Wake-Up or also called bus Wake-Up occurs via a CAN bus message and changes he operaion mode from Sleep mode o Sand-By mode. A signal change from recessive o dominan, followed by a dominan signal for he ime > Wake iniiaes a bus Wake-Up (see Figure 6). CANH CANL < Wake Recessive o Dominan change > Wake Wake-Up No Wake-Up INH Normal Operaion mode Go-To Sleep command Sleep mode Sand-By mode Figure 6 Remoe Wake-Up In case he ime of he dominan signal on he CAN bus is shorer han he filering ime Wake, no bus Wake-Up occurs. The filer ime is implemened o proec he HS CAN ransceiver TLE6251-2G agains uninended bus Wake-Up s, riggered by spikes on he CAN bus. The signal change on he CAN bus from recessive o dominan is mandaory, a permanen dominan signal would no acivae any bus Wake-Up. In Sand-By mode he RxD oupu pin and he NERR oupu pin display he CAN bus Wake-Up even by a low signal (deails see Chaper 8). Once he HS CAN Transceiver TLE6251-2G has recognized he Wake-Up even and has changed o Sand-By mode, he INH oupu pin becomes acive and provides he volage V S o he exernal circuiry. Daa Shee 15 Rev. 1.22

16 High Speed CAN Transceiver wih Wake and Failure Deecion Wake-Up Funcions 6.2 Local Wake-Up The TLE6251-2G can be acivaed from Sleep mode by a signal change on he WK pin, also called local Wake- Up. Designed o wihsand volages up o 40V he WK pin can be direcly conneced o V S. The inernal logic on he WK pin works bi-sensiive, meaning he Wake-Up logic on he pin WK riggers on a boh signal changes, from high o low and from low o high (see Figure 7). V WK < Wk(local) No Wake-Up > Wk(local) Wake-Up V WK,H INH Sleep mode Sand-By mode < Wk(local) > Wk(local) V WK V WK,L No Wake-Up Wake-Up INH Sleep mode Sleep Mode Sand-By mode Sand-By Mode Figure 7 Local Wake - Up A filer ime WK(local) is implemened o proec he TLE6251-2G agains uninended Wake-Up s, caused by spikes on he pin WK. The hreshold values V WK,H and V WK,L depend on he level of he V S power supply. In Sand-By mode he RxD oupu pin and he NERR oupu pin display he CAN bus Wake-Up even by a logical low signal (deails see Chaper 8). Once he HS CAN Transceiver TLE6251-2G has recognized he Wake-Up even and has changed o Sand-By mode, he INH oupu pin becomes acive and provides he volage V S o he exernal circuiry. Daa Shee 16 Rev. 1.22

17 High Speed CAN Transceiver wih Wake and Failure Deecion Wake-Up Funcions 6.3 Mode Change via he EN and NSTB pin Besides a mode change issued by a Wake-Up even, he operaion mode on he TLE6251-2G can be changed by changing he signals on he EN and NSTB pins. Therefore he power supplies V CC and V IO mus be acive. According o he mode diagram in Figure 4 he operaion mode can be changed direcly from Sleep mode o he Receive-Only mode and o he Normal Operaion mode. A change from Sleep mode direc o Sand-By mode is only possible via a Wake-Up even. For example by seing he NSTB pin and he EN pin o high he TLE6251-2G changes from Sleep mode o Normal Operaion mode (see Figure 8). The pins EN and NSTB have a hyseresis beween he low and he high signal in order o avoid any oggling during he operaion mode change. NSTB V M,H hslp V M,L EN V M,H V M,L Mode Mode INH Sleep mode Normal Operaion mode Go-To-Sleep command Sleep mode Figure 8 Wake-Up via Mode Change Daa Shee 17 Rev. 1.22

18 High Speed CAN Transceiver wih Wake and Failure Deecion Fail Safe Feaures 7 Fail Safe Feaures 7.1 CAN Bus Failure Deecion The High Speed CAN Transceiver TLE6251-2G is equipped wih a bus failure deecion uni. In Normal Operaion mode he TLE6251-2G can deec he following bus failures: CANH shored o GND CANL shored o GND CANH shored o V CC CANL shored o V CC CANH shored o V S CANL shored o V S The TLE6251-2G can no deec he bus failures: CANH open CANL open CANH shor o CANL The TLE6251-2G deecs he bus failures while sending a dominan signal o he CAN bus. Afer sending four dominan bis o he CAN bus, a low on he NERR pins indicaes he CAN bus failure. For he failure indicaion he dominan bis require a minimum pulse widh of 4 µs. In case he TLE6251-2G deecs an CAN bus failure, he failure is only indicaed by he NERR pin, he ransceiver doesn sop or block he communicaion, by disabling he oupu sage for example. CANH CANL Shor o V CC TxD RxD NERR Four Dominan Bis Figure 9 CAN Bus Failure CANH shor o V CC The communicaion on he CAN bus could sill be possible even wih a shor CANH o V CC or CANH o V S. Wheher he CAN bus communicaion is possible or no, depends on parameers like he number of Daa Shee 18 Rev. 1.22

19 High Speed CAN Transceiver wih Wake and Failure Deecion Fail Safe Feaures paricipans inside he CAN nework, he nework erminaion, ec. This figure shows a working CAN bus communicaion as an example and i shall no be considered as a liabiliy ha on HS CAN neworks he CAN bus communicaion coninues in every CAN bus failure case. 7.2 Local Failures If a local failure occurs during he operaion of he TLE6251-2G, he device ses an inernal local failure flag. The local failure flag can be displayed o he microconroller during he Receive-Only mode and he failures are indicaed by a low signal on he NERR pin. The following local failures can be deeced: TxD ime-ou TxD o RxD Shor RxD permanen Recessive Clamping Bus Dominan Clamping Over-Temperaure Deecion TxD Time-Ou Feaure The TxD ime-ou feaure proecs he CAN bus agains permanen blocking in case he logical signal on he TxD pin is coninuously low. In Normal Operaion mode, a low signal on he TxD inpu pin for he ime > TXD enables he TxD ime-ou feaure and he TLE6251-2G disables he oupu driver sage. In Receive-Only mode he TLE6251-2G indicaes he TxD ime-ou by a low signal on he NERR pin (see Figure 10). To release he oupu driver sage afer he permanen low signal on he TxD inpu pin disappears, a mode change from Receive-Only mode o Normal Operaion mode is required. Daa Shee 19 Rev. 1.22

20 High Speed CAN Transceiver wih Wake and Failure Deecion Fail Safe Feaures CANH CANL = TXD TxD ime ou released Oupu sage released TxD TxD ime-ou RxD EN NSTB NERR Normal Operaion mode Receive-Only mode Normal Operaion mode Figure 10 TxD Time-Ou Feaure TxD o RxD Shor Circui Feaure A shor beween he pins TxD and RxD causes permanen blocking of he CAN bus. In he case, ha he low side driver capabiliy of he RxD oupu pin is sronger as he high side driver capabiliy of he exernal microconroller oupu, which is conneced o he TxD pin of he TLE6251-2G, he RxD oupu signal overrides he TxD signal provided by he microconroller. In his case a coninuous dominan signal blocks he CAN bus. The TLE6251-2G deecs he shor beween he TxD and he RxD pin, disables he oupu driver sage and ses he inernal local failure flag. In Receive-Only mode he TLE6251-2G indicaes he TxD o RxD shor by a low signal on he NERR pin. The TLE6251-2G releases he failure flag and he oupu driver sage by an operaion mode change from Receive-Only mode o Normal Operaion mode RxD Permanen Recessive Clamping A High signal on he RxD pin indicaes he exernal microconroller, ha here is no CAN message on he CAN bus. The microconroller can ransmi a message o he CAN bus only when he bus is recessive. In case he high signal on he RxD pin is caused by a failure, like a shor from RxD o V IO, he RxD signal doesn mirror he signal on he CAN bus. This allows he microconroller o place a message o he CAN bus a any ime and corrups CAN bus messages on he bus. The TLE6251-2G deecs a permanen high signal on he RxD pin and se he local error flag. In order o avoid any daa collisions on he CAN bus he oupu driver sage ges disabled. In Receive-Only mode he TLE6251-2G indicaes he RxD clamping by a low signal on he NERR pin. Daa Shee 20 Rev. 1.22

21 High Speed CAN Transceiver wih Wake and Failure Deecion Fail Safe Feaures The TLE6251-2G releases he failure flag and he oupu driver sage by an operaion mode change or when he RxD clamping failure disappears Bus Dominan Clamping Due o a fail funcion on one of he CAN bus paricipans, he CAN bus could be permanen in dominan sae. The exernal microconroller doesn ransmi any daa o he CAN bus as long as he CAN bus remains dominan. Even if he permanen dominan sae on he CAN bus is caused by a shor from CANH o V CC, or similar, he ransceiver can no deec he failure, because he CAN bus failure deecion works only when he ransceiver is acive sending daa o he bus. Therefore he TLE6251-2G has a bus dominan clamping deecion uni insalled. In case he bus signal is dominan for he ime > Bus, he TLE6251-2G deecs he bus clamping and ses he local failure flag. The oupu driver sage remains acive. In Receive-Only mode he TLE6251-2G indicaes he bus dominan clamping by a low signal on he NERR pin Over-Temperaure Deecion The oupu driver sage is proeced agains over emperaure. Exceeding he shudown emperaure resuls in deacivaion of he oupu driver sage. To avoid any oggling afer he device cools down, he oupu driver sage is enabled again only afer a recessive o dominan signal change on he TxD pin (see Figure 11). An Over-Temperaure even only deacivaes he oupu driver sage, he TLE6251-2G doesn change is operaion mode in his failure case. The overemperaure even is indicaed by a low signal on he NERR pin in Receive-Only mode. Temp. Thermal Shudown Temp. T JSD Cool Down Thermal Shudown Hyseresis ΔT J Oupu-Sage Release CANH CANL TxD RxD Normal Operaion mode Figure 11 Release of he Transmission afer an Over-Temperaure even Daa Shee 21 Rev. 1.22

22 High Speed CAN Transceiver wih Wake and Failure Deecion Fail Safe Feaures 7.3 Under-Volage Deecion The TLE6251-2G provides a power supply monioring on all hree power supply pins: V CC, V IO and V S. In case of an under - volage even on any of his hree power supplies, he TLE6251-2G changes he operaion mode and ses an inernal failure flag. The inernal failure flag is no indicaed by he NERR oupu pin Under-Volage even on V CC and V IO An under-volage even on he power supply V CC or he power supply V IO causes he change of he operaion mode o Sleep mode, regardless of he operaion mode in which he TLE6251-2G migh currenly operae. The logical signals on he digial inpu pins EN and NSTB are also disregarded. Afer he power supplies V CC and V IO are acivaed again, he operaion mode can be changed he usual way. From Sleep mode o Sand-By mode by a Wake-Up even or from Sleep mode direc o Normal Operaion mode, Receive-Only mode by he digial inpu pins EN and NSTB. The under-volage monioring on he power supply V CC and V IO is combined wih an inernal filer ime. Only if he volage drop on each of hese wo power supplies is longer presen as he ime Drop > UV(VIO) ( Drop > UV(VCC) ) he operaion mode change is acivaed (see Figure 12). Under-volage evens on he power supplies V CC or V IO are no indicaed by he NERR pin nor by he RxD pin. V CC < UV(VCC) > UV(VCC) V CC,UV INH Normal Operaion mode / Receive Only mode / Sand By mode or Go-To Sleep command Sleep mode V IO < UV(VIO) > UV(VIO) V IO,UV INH Normal Operaion mode / Receive Only mode / Sand By mode or Go-To Sleep command Sleep mode Figure 12 Under-Volage on V IO or V CC Daa Shee 22 Rev. 1.22

23 High Speed CAN Transceiver wih Wake and Failure Deecion Fail Safe Feaures Under-Volage Even on V S If an under-volage even is deeced a he power supply V S, he TLE6251-2G immediaely eners Sand-By mode, regardless of he operaion mode in which he TLE6251-2G operaes. Afer he power supply V S has been reesablished, he operaion mode can be changed by applying a high signal o he EN pin or he NSTB pin. In he case he TLE6251-2G deecs an under-volage even on he V CC or V IO power supply, he TLE6251-2G changes o Sleep mode. If he TLE6251-2G deecs in Sleep mode an under-volage even on he V S power supply, he device eners Sand-By mode, even when he under-volage even on he V CC or V IO power supply is sill presen. V S V S,Pon V S,Poff any mode Power Down Sand-By mode Figure 13 Under-Volage on V S 7.4 Volage Adapaion The advanage of he adapive microconroller logic is he raio merical scaling of he I/O levels depending on he inpu volage a he V IO pin. Connecing he V IO inpu o he I/O supply of he microconroller ensures, ha he I/O volage of he microconroller fis o he inernal logic levels of he TLE6251-2G. 7.5 Spli Circui The SPLIT oupu pin is acivaed during Normal Operaion mode and Receive-Only mode and deacivaed (SPLIT pin high resisive) during Sleep mode and Sand-By mode. The SPLIT pin is used o sabilize he recessive common mode signal in Normal Operaion mode and Receive-Only mode. This is realized wih a sabilized volage of 0.5 x V CC a he SPLIT pin. Daa Shee 23 Rev. 1.22

24 High Speed CAN Transceiver wih Wake and Failure Deecion Diagnosis-Flags a NERR and RxD 8 Diagnosis-Flags a NERR and RxD Table 3 Truh Table NSTB EN INH Mode Even NERR RxD SPLIT 1 1 High Normal No CAN bus failure 1) 1 low : bus ON CAN bus failure 1) 0 dominan, high : bus Wake-up via CAN bus/no wake-up 1 recessive reques deeced Wake-up via pin WK 2) High Receive Only No V S fail deeced 3) 1 low : bus V dominan, S fail deeced 3) 0 high : bus No TxD ime-ou, 1 recessive Over-Temperaure even, RxD recessive clamping or Bus dominan ime ou deeced 4) TxD ime-ou, 0 Over-Temperaure even, RxD recessive clamping or Bus dominan ime ou deeced 4) 0 0 High Sand-By Wake-up reques deeced 5)6) 0 0 OFF No Wake up reques deeced 5) Floaing Sleep Wake-up reques deeced 5) 0 0 OFF No wake-up reques deeced 5) 1 1 1) Only valid afer a leas four recessive o dominan edges a TxD when enering he Normal Operaion mode. 2) Only valid before four recessive o dominan edges a TxD when enering he Normal Operaion mode. 3) Power-Up flag only available, when V CC and V IO are acive. Power-Up flag will be cleared when enering Normal Operaion mode. 4) Valid afer a ransiion from Normal Operaion mode. 5) Only valid when V CC and V IO are acive. 6) Afer firs power-up or afer an undervolage even on VS, a wake-up is no signaled on he RxD and NERR oupu pin. ON Daa Shee 24 Rev. 1.22

25 High Speed CAN Transceiver wih Wake and Failure Deecion General Produc Characerisics 9 General Produc Characerisics 9.1 Absolue Maximum Raings Table 4 Absolue Maximum Raings 1) All volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Parameer Symbol Values Uni Noe or Tes Condiion Number Min. Typ. Max. Volages Supply volage V S V P_9.1.1 Transceiver supply volage V CC V P_9.1.2 Logic supply volage V IO V P_9.1.3 CANH DC volage versus GND V CANH V P_9.1.4 CANL DC volage versus GND V CANL V P_9.1.5 Spli DC volage versus GND V SPLIT V P_9.1.6 Inpu volage a WK V WK V P_9.1.7 Inpu volage a INH V INH -0.3 V S V P_9.1.8 Differenial volage CANH o CANL V Diff,CAN V Max. differenial volage P_9.1.9 beween CAN and CANL Differenial volage SPLIT o CANH and CANL Differenial volage WK o SPLIT, CANH and CANL V Diff,SPLIT V Max. differenial volage beween SPLIT and CAN V Diff,WK V Max. differenial volage beween WK and SPLIT, CAN P_ P_ Logic volages a EN, NSTB, NERR, V Logic -0.3 V IO V 0 V < V IO < 6.0 V P_ TxD, RxD Currens Maximum Oupu Curren INH I INH(max) -5 0 ma P_ Temperaures Juncion Temperaure T j C P_ Sorage Temperaure T sg C P_ ESD Suscepibiliy ESD Resisiviy a CANH, CANL, SPLIT and WK versus GND V ESD -8 8 kv HBM 2) (100 pf / 1.5 kω) P_ ESD Resisiviy all oher pins V ESD -2 2 kv HBM 2) (100 pf / 1.5 kω) P_ ) No subjec o producion es, specified by design. 2) ESD suscepibiliy, HBM according o AEC-Q D. Noe: Sresses above he ones lised here may cause permanen damage o he device. Exposure o absolue maximum raing condiions for exended periods may affec device reliabiliy. Daa Shee 25 Rev. 1.22

26 High Speed CAN Transceiver wih Wake and Failure Deecion General Produc Characerisics 1. Inegraed proecion funcions are designed o preven IC desrucion under faul condiions described in he daa shee. Faul condiions are considered as ouside normal operaing range. Proecion funcions are no designed for coninuous repeiive operaion. 9.2 Funcional Range Table 5 Operaing Range Parameer Symbol Values Uni Noe or Number Min. Typ. Max. Tes Condiion Supply Volages Supply Volage Range for Normal Operaion V S(nom) V P_9.2.1 Exended Supply Volage Range for Operaion V S(ex) V Parameer Deviaions possible P_9.2.2 Transceiver Supply Volage V CC V P_9.2.3 Logic Supply Volage V IO V P_9.2.4 Thermal Parameers Juncion emperaure T J C 1) P_ ) No subjec o producion es, specified by design Noe: Wihin he funcional range he IC operaes as described in he circui descripion. The elecrical characerisics are specified wihin he condiions given in he relaed elecrical characerisics able. 9.3 Thermal Resisance Table 6 Thermal Characerisics 1) Parameer Symbol Values Uni Noe or Tes Condiion Number Min. Typ. Max. Thermal Resisance Juncion o Soldering Poin R hjsp 25 K/W measured o pin 2 P_9.3.1 Juncion o Ambien R hja 130 K/W 2) P_9.3.2 Thermal Shudown Juncion Temperaure Thermal shudown emp. T JSD C P_9.3.3 Thermal shudown hyseresis T 10 K P_ ) No subjec o producion es, specified by design 2) EIA/JESD 52_2, FR4, mm; 35 µm Cu, 5 µm Sn; 300 mm2 Daa Shee 26 Rev. 1.22

27 High Speed CAN Transceiver wih Wake and Failure Deecion Elecrical Characerisics 10 Elecrical Characerisics 10.1 Funcional Device Characerisics Table 7 Elecrical Characerisics 4.75 V < V CC < 5.25 V; 3.0 V < V IO < 5.25 V; 5.5 V < V S <18V; R L = 60 Ω; normal mode; -40 C < T j < 150 C; all volages wih respec o ground; posiive curren flowing ino pin; unless oherwise specified. Parameer Symbol Values Uni Noe or Tes Condiion Number Min. Typ. Max. Curren Consumpion Curren consumpion in Normal Operaion mode on V CC and V IO Curren consumpion in Receive-Only mode on V CC and V IO I CC+VIO 6 10 ma Recessive sae; P_ TxD = high I CC+VIO ma Dominan sae; TxD = low I CC+VIO 6 10 ma P_ I µa V = WK = 12 V I µa V = V = 12 V I µa V = 12 V, T < 85 C, I µa V = 12 V, T < 85 C, Curren consumpion in P_ Sand-By mode on V S VS S V CC = V IO = 5V Curren consumpion in P_ Sand-By mode on V CC and V IO CC+VIO S WK V CC = V IO = 5V Curren consumpion in Sleep P_ mode on V S VS S j V CC = V IO = 0 V Curren consumpion in Sleep P_ mode on V CC and V IO CC+VIO S j V CC = V µc = 5V Supply Reses V CC under-volage deecion V CC,UV V P_ V IO under-volage deecion V IO,UV V P_ V S power ON deecion level V S,Pon V P_ V S power OFF deecion level V S,Poff V P_ Receiver Oupu RxD High level oupu curren I RD,H -4-2 ma V RD = 0.8 V IO P_ Low level oupu curren I RD,L 2 4 ma V RD = 0.2 V IO P_ Daa Shee 27 Rev. 1.22

28 High Speed CAN Transceiver wih Wake and Failure Deecion Elecrical Characerisics Table 7 Elecrical Characerisics (con d) 4.75 V < V CC < 5.25 V; 3.0 V < V IO < 5.25 V; 5.5 V < V S <18V; R L = 60 Ω; normal mode; -40 C < T j < 150 C; all volages wih respec o ground; posiive curren flowing ino pin; unless oherwise specified. Parameer Symbol Values Uni Noe or Tes Condiion Number Min. Typ. Max. Transmission Inpu TxD High level inpu range V TD,H 0.7 V Recessive sae P_ V IO IO 0.3 V Low level inpu range V TD,L V IO High level inpu curren I TD µa V TxD = V IO P_ TxD pull-up resisance R TD kω P_ Mode Conrol Inpus EN, NSTB High level inpu range V M,H 0.7 V Recessive sae P_ V IO IO 0.3 V Low level inpu range V M,L V IO Low level inpu curren I MD µa V EN and V NSTB = 0V P_ Pull-down resisance R M kω P_ Diagnosic Oupu NERR High level oupu volage V NERR,H 0.8 V I NERR = -100 µa P_ V IO Low level oupu volage V NERR,L 0.2 V I NERR = 1.25 ma P_ V IO Terminaion Oupu SPLIT Spli oupu volage V SPLIT 0.3 V CC 0.5 V CC 0.7 V CC V Normal Operaion mode; -500 µa < I SPLIT < 500 µa P_ Spli oupu volage no load V SPLIT V Normal Operaion mode; V CC V CC V CC no load Leakage curren I SPLIT µa Sleep mode V CC = V IO = 0 V Oupu resisance R SPLIT 600 Ω R SPLIT = (V SPLIT (500 µa) - V SPLIT (-500 µa)) / 1 ma P_ P_ P_ Daa Shee 28 Rev. 1.22

29 High Speed CAN Transceiver wih Wake and Failure Deecion Elecrical Characerisics Table 7 Elecrical Characerisics (con d) 4.75 V < V CC < 5.25 V; 3.0 V < V IO < 5.25 V; 5.5 V < V S <18V; R L = 60 Ω; normal mode; -40 C < T j < 150 C; all volages wih respec o ground; posiive curren flowing ino pin; unless oherwise specified. Parameer Symbol Values Uni Noe or Tes Condiion Number Min. Typ. Max. Wake Inpu WK High Level volage range a V WK,H V S - V S + V V EN =V NSTB = 0 V, P_ WK 2 V 3V rising edge Low Level volage range a V WK,L - 27 V S - V V EN =V NSTB = 0 P_ WK 4V V, falling edge High level inpu curren I WKH µa V WK = V s - 2 V P_ Low level curren I WKL 5 10 µa V WK = V s - 4 V P_ Inhibi Oupu INH High level volage drop V H V I INH = -1 ma P_ V H = V S - V INH ) I INH = -5 ma Leakage curren I INH,lk 5 µa Sleep mode; P_ V INH = 0 V Bus Transmier CANL and CANH recessive oupu volage CANL and CANH recessive oupu volage CANH o CANL recessive oupu volage difference CANL dominan oupu volage CANH dominan oupu volage CANH, CANL dominan oupu volage difference V CANL/H V Normal Operaion mode no load V CANL/H V Sleep or Sand-By mode no load V diff mv V TxD = V IO ; no load V CANL V V TxD = 0 V; 50 Ω < R L < 65 Ω V CANH V V TxD = 0 V; 50 Ω < R L < 65 Ω V diff V V TxD = 0 V; 50 Ω< R L < 65 Ω P_ P_ P_ P_ P_ P_ CANL shor circui curren I CANLsc ma V CANLshor = 18 V P_ CANH shor circui curren I CANHsc ma V CANHshor = 0 V P_ Leakage curren I CANHL,lk µa V S = V µc = V CC = 0 V; 0 V < V CANH,L < 5 V P_ Daa Shee 29 Rev. 1.22

30 High Speed CAN Transceiver wih Wake and Failure Deecion Elecrical Characerisics Table 7 Elecrical Characerisics (con d) 4.75 V < V CC < 5.25 V; 3.0 V < V IO < 5.25 V; 5.5 V < V S <18V; R L = 60 Ω; normal mode; -40 C < T j < 150 C; all volages wih respec o ground; posiive curren flowing ino pin; unless oherwise specified. Parameer Symbol Values Uni Noe or Tes Condiion Number Min. Typ. Max. Bus Receiver Differenial receiver inpu V diff,rdn V Normal Operaion mode, P_ range - dominan In respec o CMR Differenial receiver inpu V diff,drn V Normal Operaion mode, P_ range - recessive In respec o CMR Differenial receiver inpu V diff,rdl V Sleep mode, Sand-By mode P_ range - dominan In respec o CMR Differenial receiver inpu V diff,drl V Sleep mode, Sand-By mode P_ range - recessive In respec o CMR Common Mode Range CMR V V CC = 5 V P_ Differenial receiver hyseresis V diff,hys 100 mv P_ CANH, CANL inpu resisance R i kω Recessive sae P_ Differenial inpu resisance R diff kω Recessive sae P_ Dynamic CAN-Transceiver Characerisics Propagaion delay TxD-o-RxD low (recessive o dominan) Propagaion delay TxD-o-RxD high (dominan o recessive) Propagaion delay TxD low o bus dominan Propagaion delay TxD high o bus recessive Propagaion delay bus dominan o RxD low Propagaion delay bus recessive o RxD high Min. hold ime go o sleep command d(l),tr ns C L = 100 pf; V CC = V IO = 5 V; C RxD = 15 pf d(h),tr ns C L = 100 pf; V CC = V IO = 5 V; C RxD = 15 pf d(l),t ns C L = 100 pf; V CC = V IO = 5 V; C RxD = 15 pf d(h),t ns C L = 100 pf; V CC = V IO = 5 V; C RxD = 15 pf d(l),r ns C L = 100 pf; V CC = V IO = 5 V; C RxD = 15 pf d(h),r ns C L = 100 pf; V CC = V IO = 5 V; C RxD = 15 pf P_ P_ P_ P_ P_ P_ hslp µs P_ Min. wake-up ime on pin WK WK(local) µs P_ Min. dominan ime for bus Wake µs P_ wake-up TxD permanen dominan TxD ms P_ disable ime Bus permanen ime-ou Bus, ms P_ Daa Shee 30 Rev. 1.22

31 High Speed CAN Transceiver wih Wake and Failure Deecion Elecrical Characerisics Table 7 Elecrical Characerisics (con d) 4.75 V < V CC < 5.25 V; 3.0 V < V IO < 5.25 V; 5.5 V < V S <18V; R L = 60 Ω; normal mode; -40 C < T j < 150 C; all volages wih respec o ground; posiive curren flowing ino pin; unless oherwise specified. Parameer Symbol Values Uni Noe or Tes Condiion Number Min. Typ. Max. V CC, V µc undervolage filer ime 10.2 Diagrams UV(VIO) ms P_ UV(VCC) Time for mode change Mode 20 µs 1) No subjec o producion es, specified by design. 1) P_ nf V S NSTB EN CANH TxD 1 C L R L RxD 4 12 CANL C RxD V IO 5 9 WK GND 2 V CC nf 100 nf = V CC = V IO Figure 14 Tes Circui for Dynamic Characerisics V TxD V IO GND V DIFF d(l),t d(h),t 0.9 V 0.5 V d(l),r d(h),r V RxD V IO GND d(l),tr d(h),tr 0.2 x V IO 0.8 x V IO Figure 15 Timing Diagrams for Dynamic Characerisics Daa Shee 31 Rev. 1.22

32 High Speed CAN Transceiver wih Wake and Failure Deecion Applicaion Informaion 11 Applicaion Informaion Noe: The following informaion is given as a hin for he implemenaion of he device only and shall no be regarded as a descripion or warrany of a cerain funcionaliy, condiion or qualiy of he device Applicaion Example 4.7 nf 1) V S 60 Ω V Ba 60 Ω CAN Bus 51 µh 10 kω 9 1) 100 nf TLE6251-2G WK CANH CANL SPLIT V S INH GND 2 EN NSTB NERR RxD TxD V IO V CC nf 100 nf 100 nf Micro Conroller E.g. XC22xx GND INH V Q µf 100 nf e.g. TLE 4476 (3.3/5 V) or TLE 4471 TLE 4276 TLE V V I1 V Q2 GND + 22 µf + 22 µf ECU 51 µh 1) TLE6251DS CANH CANL SPLIT STB 8 RxD 4 TxD 1 3 Micro Conroller E.g. XC22xx GND 2 V CC 100 nf 100 nf GND 60 Ω 60 Ω 4.7 nf 1) 22 + µf 100 nf e. g. TLE 4270 V I V Q GND + 5 V 22 µf ECU 1) Opional, according o he car manufacurer requiremens Figure 16 Applicaion Circui Example Daa Shee 32 Rev. 1.22

33 High Speed CAN Transceiver wih Wake and Failure Deecion Applicaion Informaion 11.2 ESD Robusness according o IEC Tes for ESD robusness according o IEC Gun es (150 pf, 330 Ω) have been performed. The resuls and es condiions are available in a separae es repor. Table 8 ESD Robusness according o IEC Performed Tes Resul Uni Remarks Elecrosaic discharge volage a pin V S, CANH, CANL and WK versus GND 9 kv 1) Posiive pulse Elecrosaic discharge volage a pin V S, CANH, CANL and WK versus GND -9 kv 1) Negaive pulse 1) ESD suscepibiliy ESD GUN according o Gif ICT Evaluaion of CAN Transceiver Secion 4.3. (IEC : ) -Tesed by exernal es house (IBEE Zwickau, EMC Tesrepor Nr. 07a referenced o he TLE6251-2G) Volage Drop over he INH Oupu 1,00 Volage Drop on he INH oupu pin Volage Drop (V) T J = 150 C T J = 25 C T J = -40 C 0,00 0,00 1,00 2,00 3,00 4,00 5,00 INH Oupu Curren (ma) Figure 17 INH oupu volage drop versus oupu curren (ypical values only!) 11.4 Mode Change o Sleep mode Mode changes are applied eiher by a hos command, an Wake-Up even or by an under-volage even. To rigger a mode change by a hos command or in oher words by a signal change on he digial inpu pins EN and NSTB all power supplies, V S V IO and V CC need o be available.tle6251-2g. By seing he EN pin o high and he NSTB pin o low, he TLE6251-2G eners he Go-To-Sleep command and afer he ime = hslp expires, he TLE6251-2G eners ino he Sleep mode (see Chaper 5.5). For any mode change, also for a mode change o Sleep mode he TLE6251-2G disregards he signal on he CAN bus. Therefore he TLE6251-2G can ener Sleep mode and remain in Sleep mode even when here is a shor circui on he CAN bus, for example CANH shored o V S or V CC. Daa Shee 33 Rev. 1.22