Can Wake Up Function - Fujitsu MB90420/5 (A) Series Hardware Manual

23.14 CAN WAKE UP Function

When a connection is made between the CAN RX pin and the external interrupt pin, it is possible to use the
WAKE UP function for CAN reception.
n Pins used by CAN WAKE UP function
Connecting the RX0 and INT0 pins internally provides the WAKE UP function. In this case, the INT pin
external interrupt function can no longer be used.
Since the RX1 and INT1 pins share the same pin, the WAKE UP function can be used without switching
these pins.
n CAN WAKE UP function
With the sleep mode set, a return can be made from the sleep mode using the CAN receive data.
Before transition to the sleep mode, the CAN controller and external interrupt must be set.
CAN CONTROLLER
CAN0
CAN1
RX Pin Interrupt Function
RX0
RX1
23-43
INT0
INT1