Fujitsu FR81S User Manual
CHAPTER 41: CAN
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: CAN
FUJITSU SEMICONDUCTOR CONFIDENTIAL
92
5.9. CAN Wake Up Function
CAN Wake Up function is shown.
It can be wake up in the reception operation of the CAN by connecting the RX pin of the CAN with the
external interrupt pin.
About the pin used by the CAN wake up function.
Because the RX0 pin and the INT0 pin, the RX1 pin and the INT1 pin or the RX2 pin and the INT7 pin are
shared, the wake up function can be used.
Table 5-5 shows the relation among the CAN wake up function, the RX pin, and the INT pin.
RX pin
Interrupt function
CAN0
RX0(128)
INT0_0
CAN1
RX1(64)
INT1_0
RX1_1
INT1_1
CAN2
RX2(64)
INT7_0
About CAN wake up function
It is possible to return from the sleep mode or the standby mode by the reception data of the CAN.
Note:
It is necessary to set an external interrupt before it shifts to the sleep mode or the standby mode when the
wake up function is used.
MB91520 Series
MN705-00010-1v0-E
1785