ST10F276 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST10F276' PDF : 229 Pages View PDF
CAN modules
ST10F276
16.2
CAN bus configurations
Depending on application, CAN bus configuration may be one single bus with a single or
multiple interfaces or a multiple bus with a single or multiple interfaces. The ST10F276 is
able to support these two cases.
Single CAN bus
The single CAN Bus multiple interfaces configuration may be implemented using two CAN
transceivers as shown in Figure 20.
Figure 20. Connection to single CAN bus via separate CAN transceivers
XMISC.CANPAR = 0
CAN1
RX TX
CAN2
RX TX
P4.5
P4.6 P4.4
P4.7
CAN
Transceiver
CAN
Transceiver
CAN_H
CAN_L
CAN bus
The ST10F276 also supports single CAN Bus multiple (dual) interfaces using the open drain
option of the CANx_TxD output as shown in Figure 21. Thanks to the OR-Wired
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 21. Connection to single CAN bus via common CAN transceivers
XMISC.CANPAR = 0
CAN1
CAN2
RX TX
RX TX
+5V
2.7kW
P4.5
P4.6 P4.4
OD
P4.7
OD
CAN_H
CAN_L
CAN
Transceiver
CAN bus
OD = Open Drain Output
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