st10f273m STMicroelectronics, st10f273m Datasheet - Page 78

• Manufacturer Part Number: st10f273m
• Description: 16-bit Mcu With 512 Kbyte Flash Memory And 36 Kbyte Ram
• Manufacturer: STMicroelectronics

CAN modules
17.2.1
78/182
Single CAN bus
The single CAN bus multiple interfaces configuration may be implemented using two CAN
transceivers as shown in
Figure 14. Connection to single CAN bus via separate CAN transceivers
The ST10F273M also supports single CAN bus multiple (dual) interfaces using the open
drain option of the CANx_TxD output as shown in
Connection, only one transceiver is required. In this case the design of the application must
take in account the wire length and the noise environment.
Figure 15. Connection to single CAN bus via common CAN transceivers
2.7kW
CAN_H
CAN_L
CAN_H
CAN_L
+5V
P4.5
P4.5
transceiver
Figure
RX
transceiver
CAN1
RX
CAN
CAN1
CAN
TX
14.
TX
P4.6
CAN bus
P4.6
OD
P4.4
P4.4
transceiver
RX
CAN2
RX
CAN
CAN2
CAN bus
TX
TX
P4.7
Figure
OD
P4.7
15. Thanks to the OR-Wired
OD = Open Drain Output
XMISC.CANPAR = 0
XMISC.CANPAR = 0
ST10F273M