ST10F296 datasheet(194/346 Pages) STMICROELECTRONICS

tên linh kiện	ST10F296

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ST10F296E

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17.4

CAN bus configurations

Depending on the application, CAN bus configuration may be one single bus with single or

multiple interfaces or a multiple bus with single or multiple interfaces. The ST10F296E is

able to support both situations.

17.4.1

Single CAN bus

The single CAN bus multiple interface configuration may be implemented using two CAN

transceivers as shown in Figure 67.

Figure 67.

Connection to a single CAN bus via separate CAN transceivers

The ST10F296E also supports single CAN bus multiple (dual) interfaces using the open-

drain option of the CANx_TxD output as shown in Figure 68. Due to the OR-wired

connection, only one transceiver is required. In this case the design of the application must

take into account the wire length and the noise environment.

Figure 68.

Connection to a single CAN bus via common CAN transceivers

CAN1

CAN_H

CAN_L

CAN bus

CAN2

XMISC.CANPAR = 0

CAN

transceiver

P4.4

P4.7

P4.5

P4.6

OD = Open-drain output

+5 V

CAN

CAN_H

CAN_L

CAN bus

2.7 k

Ω

transceiver

XMISC.CANPAR = 0

CAN1

CAN2

P4.4

P4.7

P4.5

P4.6

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