AMIS-3066x High Speed CAN Transceiver Application Note Difference Between 5V and 3.3 Version of CAN High Speed

Transcription

1 0x High Speed Transceiver Application Note0-0 Difference Between V and. Version of High Speed.0 Introduction AMIS has two version of the high speed transceiver: 00 full V version 0 version with.v interfacing towards controller The 0 is a derivate of the 00 silicon, with minor modifications at metal level. This application note describes the differences between the two products..0 Differences Between 00 and 0. Block Diagrams Figure. Both products are based on the same product specification and IP blocks. Detailed general block diagrams are shown in Figure and S Thermal shutdown Timer Driver control 00 COMP V cc / + PC0009. Figure : 00 Block Diagram AMI Semiconductor Sept. 0, Rev..0

2 0x High Speed Transceiver Application Note0-0 Difference Between V and. Version of High Speed V Thermal shutdown Timer Driver 'S' control V 0 COMP V cc / + PC000. Figure : 0 Block Diagram. Pinout Differences S V 00 0 PC0009. PC0009. Table : Pin Description Pin 00 0 Description Transmit data input; low input dominant driver; internal pull-up current Ground Supply voltage Receive data output; dominant transmitter low output Reference voltage output LOW-level bus line (low in dominant mode) HIGH-level bus line (high in dominant mode) S V Select input for high speed or silent mode; internal pull-down current.v supply for digital I/O The pin number is a digital CMOS input pin (standby) on the 00 device and is the I/O supply pin called V for pin on the 0 product. Internally, on 0, the stand-by signal is forced to ground. This means Pin must be properly decoupled in application and treated as a supply pin while performing ESD and LU tests. The pull-up on Pin is connected via protection diode to V and not to V supply as in the 00. AMI Semiconductor Sept. 0, Rev..0

3 0x High Speed Transceiver Application Note0-0 Difference Between V and. Version of High Speed..V Interface The 0 may be used to interface with.v or V controllers by using the V pin. This pin may be supplied with.v or V to correspond with digital interface voltage levels.. Electrical Characteristics Table : 00 (V Version) Receiver Data Output (Pin ) V OH HIGH-level output voltage I RXD = -0mA 0. x 0. x V V OL LOW-level output voltage I RXD = ma V Transmitter Data Input (Pin ) I IH HIGH-level input current V = µa I IL LOW-level input current V = 0 V µa Table : 0 (.V Version) Receiver Data Output (Pin ) V OH HIGH-level output voltage I RXD = -0mA 0. x V 0. x V V V OL LOW-level output voltage I RXD = ma V Transmitter Data Input (Pin ) I IH HIGH-level input current V = V µa I IL LOW-level input current V = 0V µa VBAT V-reg 0 Ω 0 Ω nf controller S VREF 00 BUS 0 Ω 0 Ω PC0009. nf Figure : Typical Application Schematic for the 00 AMI Semiconductor Sept. 0, Rev..0

4 0x High Speed Transceiver Application Note0-0 Difference Between V and. Version of High Speed VBAT V-reg 0 Ω 0 Ω nf.vreg V BUS PC controller 0 VREF 0 Ω 0 Ω nf Figure : Typical Application Schematic for the 0.0 Timing Characteristics Table : 00 Timing Characteristics t d(-buson) Delay to bus active V s = 0V 0 0 ns t d(-busoff) Delay to bus inactive V s = 0V ns t d(buson-) Delay bus active to V s = 0V 0 ns t d(busoff-) Delay bus inactive to V s = 0V 00 ns t pd(rec-dom) Propagation delay to from recessive to dominant V s = 0V 0 0 ns t d(dom-rec) Propagation delay to from dominant to recessive V s = 0V 00 ns Table : 0 Timing Characteristics Symbol Parameter Min. Typ. Max. Unit t d(-buson) Delay to bus active 0 0 ns t d(-busoff) Delay to bus inactive ns t d(buson-) Delay bus active to 0 ns t d(busoff-) Delay bus inactive to 00 ns t pd(rec-dom) Propagation delay to from recessive to dominant 00 0 ns t d(dom-rec) Propagation delay to from dominant to recessive 00 ns Table : Supply Voltage to V Pin Symbol Parameter Conditions Min. Max. Unit V I/O interface voltage Absolute maximum range V V I/O interface voltage Operating range of VV pin.9. V All other characteristics can be found in the data sheet and are identical for both versions. AMI Semiconductor Sept. 0, Rev..0

5 0x High Speed Transceiver Application Note0-0 Difference Between V and. Version of High Speed.0 Company or Product Inquires For more information about AMI Semiconductor s /L transceivers, send an to /sales. For more information about AMI Semiconductor s products or services visit our Web site at Revision History Table : Revision History Revision Date Modification.0 Jun. 00 Initial release.0 Sept. 00 Update format Devices sold by AMIS are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMIS makes no warranty, express, statutory, implied or by description, regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. AMIS makes no warranty of merchantability or fitness for any purposes. AMIS reserves the right to discontinue production and change specifications and prices at any time and without notice. AMI Semiconductor's products are intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recommended without additional processing by AMIS for such applications. Copyright 00 AMI Semiconductor, Inc. AMI Semiconductor Sept. 0, Rev..0