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M16C/5L Group, M16C/56 Group
23.2.3
CAN Sleep Mode
CAN sleep mode is used for reducing current consumption by stopping the clock supply to the CAN
module. After MCU hardware reset or software reset, the CAN module starts from CAN sleep mode.
When the SLPM bit in the C0CTLR register is set to 1, the CAN module enters CAN sleep mode. Then
the SLPST bit in the C0STR register is set to 1. Do not change the value of the SLPM bit until the bit is
set to 1. The other registers remain unchanged when the MCU enters CAN sleep mode.
Write to the SLPM bit in CAN reset mode and CAN halt mode. Do not change any other registers
(except the SLPM bit) during CAN sleep mode. Read operation is still allowed.
When the SLPM bit is set to 0, the CAN module is released from CAN sleep mode. When the CAN
module exits CAN sleep mode, the other registers remain unchanged.
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
23. CAN Module
Page 601 of 803
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