Wireless M-Bus Multi-Mode RF Transceiver Module (EN :2005)

Transcription

1 Wireless M-Bus Multi-Mode RF Transceiver Module (EN :2005) Product Description The RF Transceiver Module is a compact surface-mounted high performance module with embedded Wireless M-Bus protocol. The module has a UART interface for serial communication and configuration, and a one-pin antenna connection. The module is precertified for operation under the European radio regulations for license-free use and measures only 12.7 x 25.4 x 3.3 mm with shielding. When used with quarter-wave antennas a line-of-sight range of meter can be achieved. The meets the Wireless M-Bus specification S, T and R2 modes, and operates in 12 channels in the 868 MHz frequency band. Applications Wireless M-Bus Automatic Meter Reading (AMR) Advanced Metering Infrastructure (AMI) Electricity meters Gas and Water meters Heat meters, Heat cost allocators Readers and concentrators Features Embedded Wireless M-Bus protocol supporting EN :2005 mode S, T and R x 25.4 x 3.3 mm compact module for SMD mounting Easy to use UART interface for communication and configuration Wide supply voltage range, V Ultra low power modes for extended battery lifetime 2 channels (868.3, MHz) in mode S and T 10 channels in mode R2 ( n x 0.06 MHz) No external components except antenna Configurable Manufacturer ID and serial number Conforms with EU R&TTE directive (EN , EN , EN 60950) Designed for EX compliance Quick Reference Data Parameter Unit Frequency bands MHz Number of channels 12 Data rate 4.8, , 100 kbit/s Max output power 9 dbm Sensitivity, R/S/T -106/-102/-101 dbm Supply voltage Volt Current consumption, RX / TX 22 / 37 ma Current consumption, SLEEP Typ 0.3 ua Temperature range (S and T mode) -40 to +85 C PRELIMINARY INFORMATION. Specifications and information herein are subject to change without notice Radiocrafts AS Data Sheet (rev. 1.0) Page 1 of 28

2 Typical application circuit V { To host meter or RS232/422/485 driver Optional GND CTS RTS CONFIG TXD RXD GND GND VCC RESET_N NC GND RF GND NC Antenna Meter RXD TXD UART (modem) (modem) UART to: RS232 RS485 USB Ethernet Quick Product Introduction How do I transmit data? Send your data to the RXD pin on the module. Use the UART format with settings (19200, 8, 1, N, no flow control). Up to 128 bytes are buffered in the module. The first byte of the message should contain the message length. The module will transmit the data when the whole packet is received. How do I receive data? Any received data packet with correct M-Bus format and check sums will be sent on the TXD pin. Optionally the meter address (first M-Bus block) is added to the data string. The RSSI value (received signal strength) can optionally be added to the message. What about the antenna? In most cases a simple quarter wavelength wire or a PCB track will do. Connect a piece of wire to the RF pin with length corresponding to the quarter of a wavelength. For space limited products, contact Radiocrafts and we will recommend the best antenna solution for your application. How do I change the M-Bus mode, RF channel or any other parameter? To change configurable parameters, send one byte to the module with the value 0x00. This will take the module into configuration mode. Special commands are then used to access the configuration registers and test modes. Exit from configuration mode by sending the X command. Parameters can be changed permanently and stored in non-volatile memory in the module Radiocrafts AS Data Sheet (rev. 1.0) Page 2 of 28

3 Wireless M-Bus modem The standard module acts like a wireless M-Bus modem with a UART interface. The embedded protocol transmits and receives the wireless M-Bus data packets based on application messages from an external source (the meter or the concentrator). The module automatically adds the Command field, the Manufacturer ID and the unique Address based on parameters configured in the module. Timing and application layer protocol is to be handled externally. The UART data can easily be converted to USB or RS485/232 to interface external equipment. The module is configured through its UART interface using a simple command set. Configuration parameters are stored in non-volatile memory. The module can be set in Sleep mode with very low current consumption, and wake up on UART activity. The protocol for UART application messages is as follows: From meter to module: 1 byte 1 byte n bytes Length CI APP_LAYER From module to other (with meter address): 1 byte 1 byte 2 bytes 6 bytes 1 byte n bytes 1 byte Length C ManID Address CI APP_LAYER RSSI (opt) From module to other (without meter address): 1 byte 1 byte n bytes 1 byte Length CI APP_LAYER RSSI (opt) Similar commands are available for configuration via the UART interface Radiocrafts AS Data Sheet (rev. 1.0) Page 3 of 28

4 Full wireless M-Bus application (optional custom specific version) As an option, a full wireless M-Bus application layer can be integrated in the module based on customer specification. In this case all the application layer protocol and timing will be handled internally by the module. An S0 (1-pin) pulse interface and/or a serial interface can be used to read out values from any meter. Since the protocol for reading out meter information may differ from meter to meter, the embedded firmware is customized for each different meter and application. These are some of the features that can be used in a customized application: 4 kb EEPROM for storing meter data 32 khz oscillator for real time clock time stamps AES-128 encryption Sleep timers Message acknowledgement and re-transmissions Digital I/O pins for tamper detection, alarms and installation A/D converter for analogue sensors One-Button Installation (optional custom specific version) Due to the two-way transceiver capability of the module, a simple and robust installation procedure can be used even for S1 and T1 (one-way) operation modes. In a full M-Bus application, the Radiocrafts unique one-button installation feature simplifies the installation and reduces installation time substantially. Using an external push-button and a LED connected to dedicated pins on the module, the installation procedure is very simple: Press the install button on concentrator Press the install button on meter Wait 5 seconds for two way communication between meter and concentrator See installation LED go on for OK installation (Blinking for error during installation) 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 4 of 28

5 Pin Assignment GND CTS GND VCC RTS 3 12 RESET CONFIG 4 11 NC TXD 5 10 GND RXD GND RF GND Pin Description Pin no Pin name Description Equivalent circuit 1 GND System ground GND 2 CTS UART Clear to Send 3 RTS UART Request to Send 4 CONFIG Configuration Enable. Active low. Should normally be set high. Connect to VDD if not used. 5 TXD UART TX Data 6 RXD UART RX Data Input: 20k VDD (1.8V) Output: VDD (1.8V) 7 GND System ground 8 GND System ground 9 RF RF I/O connection to antenna GND RF 10k 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 5 of 28

6 10 GND System ground GND 11 NC Not connected 12 RESET Main reset (active low). Should normally be left open. Internal 100 k pull-up resistor. VDD (1.8V) 12k RESET 13 VCC Supply voltage input. Internally regulated. VCC 1.8 V VREG 2u2 14 GND System ground GND RESERVED Test pins or pins reserved for future use. Do not connect! RESERVED Test pins or pins reserved for future use. Do not connect! Note 1: For UART communication the TXD and RXD are used for serial data, and CTS and RTS for flow control (optional). Note 2: The CONFIG pin can be used to enter configuration mode (change of default settings) as an alternative to the 0x00 command. Active low. Note 3: Other digital interfaces may be specified upon request Radiocrafts AS Data Sheet (rev. 1.0) Page 6 of 28

7 Block Diagram V Pulse input (option) UART interface 8-bit MCU M-Bus Application (option) Wireless M-Bus protocol Wireless M-Bus RF Tranceiver 32 khz Real Time Clock (option) 32 MHz clock 4kB EEPROM (option) Circuit Description The module contains a communication controller with embedded Wireless M-Bus protocol software and a high performance RF transceiver. As an option the module can support a real time clock oscillator and EEPROM memory. The communication controller handles the radio packet protocol, the UART interface and controls the RF transceiver. Data to be sent by the host is received at the RXD pin and buffered in the communication controller. The data packet is then assembled with preamble, start-of-frame delimited (SOF), manufacturer ID, unique address information and CRC check sums before it is transmitted on RF. The RF transceiver modulates the data to be transmitted on RF frequency, and demodulates data that are received. Digital signal processing technology is used to enhance sensitivity and selectivity. Received data are checked for correct CRC by the communication controller. If no CRC errors were detected, the data packet is sent to the host on the TXD line. The data format is configurable, and optionally an RSSI value (signal strength of received packet) can be added to the message. The asynchronous UART interface consists of RXD and TXD. Optionally CTS or RTS can be used for hardware handshake flow control. When a 00h value is sent as the first byte (replacing the Length byte), or the CONFIG pin is asserted, the module enters configuration mode and the communication controller interprets data received on the RXD pin as configuration commands. There are commands to change the radio channel, the output power, etc. Permanent changes of the configuration is also possible and are then stored in internal non-volatile memory (Flash). The supply voltage is connected to the VCC pin. The module contains an internal voltage regulator for the RF transceiver and can therefore operate over a wide supply voltage range Radiocrafts AS Data Sheet (rev. 1.0) Page 7 of 28

8 The module can be set in Sleep mode to reduce the power consumption to a minimum. The module is then woken up by sending a FFh byte on the UART. Sleep mode can be entered by sending a sleep command, or by configuring the module to always return to Sleep mode after data transmission (S1 and T1 modes) Radiocrafts AS Data Sheet (rev. 1.0) Page 8 of 28

9 Wireless M-Bus Embedded Protocol The module offers a buffered packet radio acting as a Wireless M-Bus modem. The module contains a fully embedded protocol supporting EN :2005 modes: Stationary mode S (S1, S1-m, S2) Frequent transmit mode T (T1 and T2) Frequent receive mode R2 The mode is configurable by the MBUS_MODE parameter. The required M-Bus mode is configured by setting the module in configuration mode and entering appropriate UART commands. The following modes are supported: S1-mode: Set RF_CHANNEL = 11 Set RF_DATA_RATE = 2 Set MBUS_MODE = 0 Set PREAMBLE_LENGTH = 4 (for short preamble) or 70 (for long preamble) T1-mode: Set RF_CHANNEL = 12 Set RF_DATA_RATE = 3 Set MBUS_MODE = 1 Set PREAMBLE_LENGTH = 4 R2-mode: Set RF_CHANNEL = 1-10 Set RF_DATA_RATE = 1 Set MBUS_MODE = 0 Set PREAMBLE_LENGTH = 10 The module supports automatic generation of L, C, M, A and CRC-field, ie; - Preamble (header + synchronisation) - CRC - Postamble The RF signal is Manchester coded or "3 out of 6" coded for increased signal integrity. Manufacturer ID and unique meter Address is entered and stored in the modules non-volatile memory. The module has an internal buffer and transmits application data when the whole packet is received based on packet length (first byte). The module also has a timeout feature that will empty the input buffer in case of false data packets. Max total payload is 128 bytes. Sleep mode can be entered via an UART command and wake-up is triggered on UART traffic (one FFh byte). Sleep mode can also be entered automatically after a transmission (configurable by SLEEP_MODE). The module acts as a buffered packet radio, hence all data to be sent is stored in the module before they are transmitted by the RF circuitry. Likewise, when data is received they are stored in the module before they are sent to the host. This allows the communication controller to add address information and to do error check of the data Radiocrafts AS Data Sheet (rev. 1.0) Page 9 of 28

10 Power Management The module can be set in SLEEP mode in order to reduce the power consumption. The low power SLEEP mode is entered by using the SLEEP command Z. In sleep mode the module will not receive or detect incoming data, neither from the host (UART port) nor from the RF transceiver. The module is awakened from the SLEEP mode by sending a wake-up byte on the UART RXD line. The wake up byte should be FFh. After the module has awaken (see Timing Information) it is ready to receive data on the UART or from the RF transceiver. All configuration settings and RAM values are retained during Sleep. If the module is shut completely off, all configuration settings in non-volatile memory is restored, but values in RAM are overwritten with default settings Radiocrafts AS Data Sheet (rev. 1.0) Page 10 of 28

11 Timing Information The figure and table below shows the timing information for the module when changing between different operating states. The IDLE state is the normal state where the module search for preamble on the air and wait for a character to be received on the UART. RXD is the state when receiving characters from the host filling up the internal buffer. TX state is when the data is transmitted on the air. RX state is when data is received from the air after preamble detection. TXD is the state where the received data is sent to the host on the UART. CONFIG is the state entered by asserting the CONFIG pin and used during parameter configuration, while MEMORY CONFIG is the sub-state entered by the M command where the configuration memory is being programmed. Note the limitation on maximum number of write cycles using the M command, see Electrical Specifications. ttxd IDLE RX trx-txd TXD ttxd-idle IDLE Preamble detected First character on UART TXD Last character on UART TXD trxd-cts ttx IDLE RXD tpacket_timeout trxd-tx TX ttx-idle IDLE First character on UART RXD Last character on UART RXD 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 11 of 28

12 OFF toff-idle IDLE RESET treset-idle IDLE SLEEP tsleep-idle IDLE IDLE CONFIG set low tconfig-prompt CONFIG C tc-config CONFIG X tconfig-idle IDLE CONFIG MEMORY CONFIG M 0xFF tmemory-config CONFIG X tconfig-idle IDLE Symbol Value Description / Note t RX-TXD TBD us Time from last byte is received from the air until first character is sent on the UART t TXD Min TBD us t TXD = # bytes received x 621 us/char (10 bits at 19.2 kbd us delay per character) t TXD-IDLE TBD ms Time from last character is sent on the UART until module is in IDLE mode (ready for RXD and RX) T RXD-CTS TBD us Time from last character is received by the UART (including any timeout) until CTS is activated t RXD-TX TBD ms Time from last character is received by the UART (including any timeout) until the module sends the first byte on the air. T TX-IDLE TBD ms Time from last character is sent on the air until module is in IDLE mode (ready for RXD and RX) t OFF-IDLE TBD ms t RESET-IDLE TBD ms t SLEEP-IDLE TBD ms TBD ms Time from 00h / CONFIG pin is set low until prompt ( > ) t CONFIG- PROMPT t C#-CONFIG TBD ms Delay after channel-byte is sent until prompt ( > ). (For other commands like M, T there is no delay but immediate prompt) t MEMORY- CONFIG TBD ms In this period the internal flash is programmed. Do not reset, turn the module off, or allow any power supply dips in this period as it may cause permanent error in the Flash configuration memory. After 0xFF the host should wait for the > prompt before any further action is done to ensure correct re-configuration. TBD ms T CONFIG- IDLE t TX Min TBD ms t TX = # bytes to send x 1.67 ms/byte (at 4.8 kbit/s). Add 13 overhead bytes if addressing and CRC is not used. Add additionally 2 extra bytes for addressing and 2 extra bytes for CRC if enabled Radiocrafts AS Data Sheet (rev. 1.0) Page 12 of 28

13 RF Frequency, Output Power Levels and Data Rates The following table shows the available RF channels and their corresponding frequencies, nominal output power levels and available data rates. Model RF channel Output power Data rate RC1180- MBUS 1-10: f RF = (N-1)*0.06 MHz where N is the channel number 11: f RF = MHz 12: f RF = MHz Factory setting: 11: MHz 1: -14 dbm 2: -6 dbm 3: 0 dbm 4: 5 dbm 5: 9 dbm 1: 4.8 kbit/s 2: kbit/s 3: 100 kbit/s RF channel and output power level can be set using the configuration commands C and P respectively. The data rate can only be changed in configuration memory by using the M command setting RF_DATA_RATE, and must be set according to M-Bus mode. The default RF channel and output power level can be set in the configuration memory by using the M command setting RF_CHANNEL and RF_POWER. The default values are used after power ON and RESET. The default factory settings are shown in bold in the table above. For more details on changing the RF channel, output power or data rate, refer to the description of the configuration commands. The use of RF frequencies, maximum allowed RF power and duty-cycles are limited by national regulations. The is complying with the applicable directives within the European Union. For more information see section Regulatory Compliance Information page Radiocrafts AS Data Sheet (rev. 1.0) Page 13 of 28

14 RSSI Reading The module provide a digital Received Signal Strength Indicator (RSSI) through the S command, or attached to received messages. The module returns an 8 bit character (one byte) indicating the current input signal strength (followed immediately by a second character which is the prompt ( > ) when in command mode). The signal strength can be used as an indication of fading margin, or as a carrier sense signal to avoid collisions. The signal strength measure by the S command is the instantaneous value. The RSSI value appended to a received message (RSSI_MODE = 1) is the signal strength of that received packet. The RSSI value increases with increased input signal strength in 0.5 db steps. Input signal strength is given by (typ.): P = - RSSI / 2 [dbm] 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 14 of 28

15 Module Configuration The configuration of the module can be changed in-circuit from the host during operation, at the time of installation of the equipment, at the manufacturing test, or even as a stand alone module. The configuration is changed sending commands on the UART interface after the module is set in configuration mode. The configuration mode is entered by sending 00h to the module, or by asserting the CONFIG pin (set low). In command mode the module will respond by sending a > prompt on the TXD pin. This indicates that the module is ready to receive commands. The CONFIG pin can then be deasserted. Note that the CONFIG pin must be de-asserted before the Exit command ( X ) is sent to the module in order to return to normal operation. After a command is executed, the module responds with the > prompt character again indicating it is ready for a new command. Do not send a new command before the > prompt is received. The time required to execute a command can vary depending on the command (see the Timing Information section). There is no > prompt after the X exit command. The parameters that are set by commands directly take immediate effect after returning to normal operation (IDLE), but will not be stored in non-volatile memory, and will be lost in case the supply power is turned off or if the module is reset. These parameters are for example the radio channel and output power. Permanent changes of parameters can be done by writing to the configuration memory using the memory command M. These are for example default radio channel, default output power and M-Bus mode, see the Configuration Memory section. A list of commands is shown in the table below. Commands must be sent as ASCII characters or their corresponding binary value. All arguments must be sent as binary values to the module (not as ASCII representation for hex or decimal). Parameter Command Argument in hex (decimal) Note Channel C 0x43 0x01-0x0C (1-12) Data is stored in volatile memory only. For variants not listed here, refer to the specific data sheet. Output power P 0x50 0x01-0x05 (1-5) Data is stored in volatile memory only. Signal Strength (RSSI) Memory configuration S 0x53 Returns one byte indicating the signal strength M 0x4D (Address, Data): see list of parameters below. 0xFF exits memory configuration. Used to enter memory configuration menu. Parameters changed are stored in non-volatile memory. Exit command X 0x58 (none) Exit to normal operation mode. All changes of parameters take effect. Sleep mode Z 0x5A (none) CONFIG pin must be asserted while in SLEEP mode. Exit sleep mode by releasing CONFIG pin. Test mode 0 0 0x30 (none) List all configuration memory parameters Test mode 1 1 0x31 (none) TX carrier 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 15 of 28

16 Test mode 2 2 0x32 (none) TX modulated signal PN9 sequence Test mode 1 must be used before 2 can be used. Return to Test mode 1 before exiting configuration mode Note: ASCII characters are written as X, hexadecimal numbers are written like 0x00, and decimal numbers are written like 10 throughout the text. A table of ASCII characters and their respective hex and decimal values are found in the Appendix. Any invalid command will be ignored and the > prompt will be re-sent. In order to use test mode 1 and 2, test mode 1 must always be set first. Modulation can then be turned on using test command 2. The modulation must be turned off by using test mode 1 again before exiting the configuration mode ( X ) in order to ensure proper operation in normal mode. Example: To select RF channel 3, send the follow sequence after asserting the CONFIG line and the > prompt is received: Command Hex Response Comment/Note Enter 0x00 > Or assert CONFIG pin De-assert CONFIG after > prompt C 0x43 > 3 0x03 > Wait for > prompt [A new command could be issued here] X 0x58 (none) Module returns to IDLE state Note that the CONFIG line must be de-asserted after the first > prompt was received, but before the X command Radiocrafts AS Data Sheet (rev. 1.0) Page 16 of 28

17 Configuration Memory The table below shows the complete list of configurable parameters stored in non-volatile memory. These values can be changed using the M command. All addresses and arguments must be sent as binary values to the module (not as ASCII representation for hex or decimal). Parameter Description Address hex Radio configuration RF_CHANNEL Default RF channel Argument dec Factory setting hex (dec) Comment 0x x0B (11) See data sheet for channel frequencies. S: Use 11 T1: Use 12 R2: Use 1-10 RF_POWER Default RF output power 0x x05 (5) See data sheet for output power levels. RF_DATA_RATE Default RF data rate 0x : 4.8 kbit/s 2: kbit/s 3: 100 kbit/s MBUS_MODE M-Bus mode 0x : S1 1: T1 SLEEP_MODE Sleep mode 0x04 0: Disable Sleep 1: Enable Sleep RSSI_MODE Append RSSI to received data 0x05 0:Disabled 1: Enabled 0x02 (2) S: Use 2 T1: Use 3 R2: Use 1 0x00 (0) 0x00 (0) 0x00 (0) Reserved 0x06 0x64(100) Reserved 0x07 0x00 (0) Reserved 0x08 0x00 (0) Reserved 0x09 0x00 (0) Radio packet configuration PREAMBLE_ LENGTH Reserved ABSOLUTE_MAX_ PACKET_LENGTH When enabled the module enter Sleep mode after transmission When enabled the RSSI value is appended to the received data 0x0A 4 bytes 0x04 (4) S: 4 (short), 70 (long) T: 4 (meter), 3 (other) R: 10 0x0B- 0xD391D Do not change. 0x0D A 0x0E 0x80 (128) Limited by hardware. Do not change. PACKET_LENGTH PACKET_TIMEOUT Max packet length. Time before modem timeout and clears transmit buffer 0x0F 0x10 0x01-0x80 (1-128) 0x00-0xFE (0-254) 0x00 (0): None 0x01 (1): 32 ms 0x02 (2): 48 ms 0x03 (3): 64 ms 0x7C (124): 2 s 0xF9 (249): 4 s 0x80 (128) 0x7C (124) Do not change None means packet timeout is disabled (not 0 s). Timeout value is (PACKET_TIMOEOUT x 16 ms) + 0/16 ms min/max 0xFE (254) is max, giving sec. Default is 2 s = 0x7C (124) Reserved 0x11 0x00 (0) Medium access, addressing and network management Reserved 0x12 0x02 (2) Reserved 0x13 0x01 (1) Do not change. Reserved 0x14 0x00 (0) Do not change. Reserved 0x15 0x00 (0) Do not change. Reserved 0x16 0x00 (0) 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 17 of 28

18 Reserved 0x17 0x00 (0) Reserved 0x18 0x00 (0) MAN_ID1 Manufacturer 0x19 0x00-0xFF 0x0C (12) ID, first byte (0-255) MAN_ID2 Manufacturer ID, second byte 0x1A 0x00-0xFF (0-255) 0xAE (174) ID1 Unique ID, first 0x1B 0x00-0xFF 0x12 (18) byte (0-255) ID2 Unique ID, 0x1C 0x00-0xFF 0x34 (52) second byte (0-255) ID3 Unique ID, third byte 0x1D 0x00-0xFF (0-255) 0x56 (86) ID4 Unique ID, forth 0x1E 0x00-0xFF 0x78 byte (0-255) (120) VER Version 0x1F 0x00-0xFF 0x01 (1) (0-255) DEV Device 0x20 0x00-0xFF 0x07 (7) (0-255) Reserved 0x21 0x01 (1) Reserved 0x22 0x01 (1) Reserved 0x23 0x00 (0) Reserved 0x24 0x00 (0) Reserved 0x24 0x00 (0) Reserved 0x26 0x00 (0) Reserved 0x27 0x04 (4) Reserved 0x28 0xFF (255) Reserved 0x29 0x08 (8) Reserved 0x2A 0x00 (0) Reserved 0x2B 0x00 (0) Reserved 0x2C 0x00 (0) Reserved 0x2D 0x00 (0) Reserved 0x2E 0x00 (0) Reserved 0x2F 0x00 (0) Data and configuration interface, UART Serial Port UART_BAUD_RATE Baud rate 0x30 0x00: Not used 0x01: x02: x03: x x05: x06: x07: x08: x09: x05 (5) Reserved 0x31 0x08 (8) Reserved 0x32 0x00 (0) Reserved 0x33 0x01 (1) Reserved 0x34 0x05 (5) UART_FLOW_CTRL UART flow 0x35 0: None 0x00 (0) control 1:CTS only 3:CTS/RTS 4:RXTX(RS485) DATA_INTERFACE Data interface 0x36 0x00: MBUS 0x00 (0) packet with ID and address 0x01: Application data only Reserved 0x37 0x01 (1) Reserved 0x38 0x2B (43) Reserved 0x39 0x00 (0) Reserved 0x3A 0x01 (1) Exit from memory configuration 0xFF No argument should be sent BE CAREFUL IFCHANGING AS HOST MAY LOOSE CONTACT WITH MODULE! Does not take effect until module is re-booted / reset. Sets receiver data format. First byte is always packet length To exit from command mode the X command must be sent after > is received Radiocrafts AS Data Sheet (rev. 1.0) Page 18 of 28

19 To make permanent changes to default values and other parameters, the Memory Configuration command M is used. This command should be followed by pairs of byte being the memory address and the new value to be stored at that address. In order to exit the Memory Configuration mode, the address 0xFF must be sent, but without any data argument. Then wait for the > prompt while the internal memory is re-programmed (See Timing Information for typical delay). To completely exit from command mode, the normal exit command X must be sent. Example: To change the MAN_ID (at address 0x19 and 0x1A) and set it to (100,200) (0x64,0xC8), send the following sequence: Command Hex Response Comment/Note Enter 0x00 > Or assert CONFIG pin De-assert CONFIG after > prompt M 0x4D > Module ready to receive address 0x19 0x19 (none) 100 0x64 (none) 0x1A 0x1A (none) 200 0xC8 (none) [new address could be sent here] [new value could be sent here] 0xFF 0xFF > Wait for > prompt X 0x58 (none) Module returns to IDLE state Test mode 0 ( 0 command) can be used to list all parameters stored in non-volatile memory. This command can be used to verify and check the module configuration Radiocrafts AS Data Sheet (rev. 1.0) Page 19 of 28

20 Antenna Connection The antenna should be connected to the RF pin. The RF pin is matched to 50 Ohm. If the antenna connector is placed away from the module at the motherboard, the track between the RF pin and the connector should be a 50 Ohm transmission line. On a two layer board made of FR4 the width of a microstrip transmission line should be 1.8 times the thickness of the board, assuming a dielectric constant of 4.8. The line should be run at the top of the board, and the bottom side should be a ground plane. Example: For a 1.6 mm thick FR4 board, the width of the trace on the top side should be 1.8 x 1.6 mm = 2.88 mm. The simplest antenna to use is the quarter wave whip antenna. A quarter wave whip antenna above a ground plane yields 37 Ohm impedance and a matching circuit for 50 Ohm are usually not required. A PCB antenna can be made as a copper track where the ground plane is removed on the back side. The rest of the PCB board should have a ground plane as large as possible, preferably as large as the antenna itself, to make it act as a counterweight to the antenna. If the track is shorter than a quarter of a wavelength, the antenna should be matched to 50 ohms. The lengths of a quarter wave antenna for different operational frequencies are given in the table below. Frequency Length [MHz] [cm] Radiocrafts AS Data Sheet (rev. 1.0) Page 20 of 28

21 PCB Layout Recommendations The recommended layout pads for the module are shown in the figure below. All dimensions are in thousands of an inch (mil). The circle in upper left corner is an orientation mark only, and should not be a part of the copper pattern. A PCB with two or more layers and with a solid ground plane in one of the inner- or bottom layer(s) is recommended. All GND-pins of the module shall be connected to this ground plane with vias with shortest possible routing, one via per GND-pin. On the back side of the module there are several test pads. These test pads shall not be connected, and the area underneath the module should be covered with solder resist. If any routing or vias is required under the module, the routing and vias must be covered with solder resist to prevent short circuiting of the test pads. It is recommended that vias are tented. Reserved pins should be soldered to the pads but the pads must be left floating Radiocrafts AS Data Sheet (rev. 1.0) Page 21 of 28

22 Mechanical Drawing Top view RC10x0 CE Shield can Side view End view Bottom view Drawings are not to scale Mechanical Dimensions The module size is 12.7 x 25.4 x 3.3 mm. 1.0" / 25.4 mm 0.5" / 12.7 mm Carrier Tape and Reel Specification Carrier tape and reel is in accordance with EIA Specification 481. Tape width Component Hole pitch Reel Units per pitch diameter reel 44 mm 16 mm 4 mm 13 Max 1000 Soldering Profile Recommendation JEDEC standard IEC/JEDEC J-STD-020B (page 11 and 12), Pb-Free Assembly is recommended. The standard requires that the heat dissipated in the "surroundings" on the PCB is taken into account. The peak temperature should be adjusted so that it is within the window specified in the standard for the actual motherboard Radiocrafts AS Data Sheet (rev. 1.0) Page 22 of 28

23 Absolute Maximum Ratings Parameter Min Max Unit Supply voltage, VCC V Voltage on any pin V Input RF level 10 dbm Storage temperature C Operating temperature C Caution! ESD sensitive device. Precaution should be used when handling the device in order to prevent permanent damage. Under no circumstances the absolute maximum ratings given above should be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device. Electrical Specifications T=25 C, VCC = 3.0V if nothing else stated. Parameter Min Typ. Max Unit Condition / Note Operating frequency MHz Number of channels 12 Input/output impedance 50 Ohm Chip rate S-mode T-mode R2-mode kcps/s Data rate S-mode T-mode R2-mode kbit/s S and R2 mode use Manchester coding. T mode use 3-of-6 coding. Frequency stability S and T mode R2 mode +/-40 +/-20 ppm TBD limited temperature range for R2 mode Transmit power dbm Typical values are for default settings FSK deviation S-mode T-mode R2-mode +/- 50 +/- 50 +/- 6 khz Adjacent channel power TBD dbc Occupied bandwidth TBD khz 99.5% Spurious emission, TX < 1 GHz > 1 GHz dbm Sensitivity S-mode T-mode R2-mode dbm Adjacent channel rejection 29 db Alternate channel selectivity 53 db 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 23 of 28

24 Image channel rejection 28 db Blocking / Interferer rejection / desensitization +/- 1 MHz +/- 2 MHz +/- 5 MHz +/- 10 MHz db Wanted signal 3 db above sensitivity level, CW interferer. Minimum numbers corresponds to class 2 receiver requirements in EN Saturation -14 dbm Input IP3 TBD dbm Spurious emission, RX -57 dbm Supply voltage V Current consumption, RX/IDLE 22 ma Apply over entire supply voltage range Current consumption, TX 9 dbm 37 ma Apply over entire supply voltage range Current consumption, SLEEP ua Digital I/O Input logic level, low Input logic level, high Output logic level, low (1µA) Output logic level, high(-1µa) 70 % 0 TBD 30 % TBD VCC V RESET pin Input logic level, low Input logic level, high 70 % 30 % V Minimum 250 ns pulse width UART Baud Rate tolerance +/- 2 % UART receiver and transmitter Configuration memory write cycles 1000 The guaranteed number of write cycles using the M command is limited 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 24 of 28

25 Regulatory Compliance Information The use of RF frequencies and maximum allowed RF power is limited by national regulations. The has been designed to comply with the R&TTE directive 1999/5/EC. According to R&TTE directives, it is the responsibility of Radiocrafts customers (i.e. RC1180- MBUS end user) to check that the host product (i.e. final product) is compliant with R&TTE essential requirements. The use of a CE marked radio module can avoid re-certification of the final product, provided that the end user respects the recommendations given by Radiocrafts. A Declaration of Conformity is available from Radiocrafts on request. The relevant regulations are subject to change. Radiocrafts AS do not take responsibility for the validity and accuracy of the understanding of the regulations referred above. Radiocrafts only guarantee that this product meets the specifications in this document. Radiocrafts is exempt from any responsibilities related to regulatory compliance Radiocrafts AS Data Sheet (rev. 1.0) Page 25 of 28

26 Appendix: ASCII Table HEX DEC CHR CTRL HEX DEC CHR 0 0 NUL ^@ SOH ^A A 2 2 STX ^B B 3 3 ETX ^C C 4 4 EOT ^D D 5 5 ENQ ^E E 6 6 ACK ^F F 7 7 BEL ^G G 8 8 BS ^H H 9 9 HT ^I I 0A 10 LF ^J 4A 74 J 0B 11 VT ^K 4B 75 K 0C 12 FF ^L 4C 76 L 0D 13 CR ^M 4D 77 M 0E 14 SO ^N 4E 78 N 0F 15 SI ^O 4F 79 O DLE ^P P DC1 ^Q Q DC2 ^R R DC3 ^S S DC4 ^T T NAK ^U U SYN ^V V ETB ^W W CAN ^X X EM ^Y Y 1A 26 SUB ^Z 5A 90 Z 1B 27 ESC 5B 91 [ 1C 28 FS 5C 92 \ 1D 29 GS 5D 93 ] 1E 30 RS 5E 94 ^ 1F 31 US 5F 95 _ SP ` 21 33! a " b # c $ d % e & f ' g ( h ) i 2A 42 * 6A 106 j 2B B 107 k 2C 44, 6C 108 l 2D 45 6D 109 m 2E 46. 6E 110 n 2F 47 / 6F 111 o p q r s t u v w x y 3A 58 : 7A 122 z 3B 59 ; 7B 123 { 3C 60 < 7C 124 3D 61 = 7D 125 } 3E 62 > 7E 126 ~ 3F 63? 7F 127 DEL 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 26 of 28

27 Document Revision History Document Revision 1.0 First release Changes Product Status and Definitions Current Data Sheet Identification Product Status Definition Status Advance Information Planned or under development This data sheet contains the design specifications for product development. Specifications may change in any manner without notice. X Preliminary Engineering Samples and First Production This data sheet contains preliminary data, and supplementary data will be published at a later date. Radiocrafts reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. No Identification Noted Full Production This data sheet contains final specifications. Radiocrafts reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Obsolete Not in Production This data sheet contains specifications on a product that has been discontinued by Radiocrafts. The data sheet is printed for reference information only Radiocrafts AS Data Sheet (rev. 1.0) Page 27 of 28

28 Disclaimer Radiocrafts AS believes the information contained herein is correct and accurate at the time of this printing. However, Radiocrafts AS reserves the right to make changes to this product without notice. Radiocrafts AS does not assume any responsibility for the use of the described product; neither does it convey any license under its patent rights, or the rights of others. The latest updates are available at the Radiocrafts website or by contacting Radiocrafts directly. As far as possible, major changes of product specifications and functionality, will be stated in product specific Errata Notes published at the Radiocrafts website. Customers are encouraged to check regularly for the most recent updates on products and support tools. Trademarks RC232 is a trademark of Radiocrafts AS. The RC232 Embedded RF Protocol is used in a range of products from Radiocrafts. The protocol handles host communication, data buffering, error check, addressing and broadcasting. It supports point-to-point, point-to-multipoint and peer-to-peer network topologies. All other trademarks, registered trademarks and product names are the sole property of their respective owners. Life Support Policy This Radiocrafts product is not designed for use in life support appliances, devices, or other systems where malfunction can reasonably be expected to result in significant personal injury to the user, or as a critical component in any life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. Radiocrafts AS customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Radiocrafts AS for any damages resulting from any improper use or sale. 2008, Radiocrafts AS. All rights reserved. Contact Information Web site: Address: Radiocrafts AS Sandakerveien 64 NO-0484 OSLO NORWAY Tel: Fax: radiocrafts@radiocrafts.com sales@radiocrafts.com support@radiocrafts.com 2008 Radiocrafts AS Data Sheet (rev. 1.0) Page 28 of 28