AT89C51CC03 데이터 시트보기 (PDF) - Unspecified

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AT89C51CC03

CAN Microcontrollers

Unspecified 

CAN Autobaud

CAN Autobaud

Limitation

AT89C51CC03 CAN Bootloader

The table below shows the autobaud performance for a point to point connection in X1 mode.

Note:

11.059

22.1184

8 MHz MHz 12 MHz 16 MHz 20 MHz MHz 24 MHz 25 MHz 32 MHz 40 MHz

20 k

100 k

125 k

–

250 k

–

500 k

1M

–

–

–

‘–’ indicates an impossible configuration.

The CAN autobaud implemented in the bootloader is efficient only in point-to-point connection.

Because in a point to point connection, the transmit CAN message is repeated until a hardware

acknowledge is done by the receiver.

The bootloader can acknowledge an in-coming CAN frame only if a configuration is found.

This functionality is not guaranteed on a network with several CAN nodes.

9

4251B–CAN–03/08

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