Filter
Top Products
235
■ Return by Standby Mode (Stop/Sleep)
The function returned from the stop mode is realized in the interrupt controller by generating an interrupt
request.
Even if an interrupt request is generated from a peripheral, a return request is generated from the standby
mode to the clock control section.
Operation of the priority decision section restarts after the clock is supplied upon returning from the stop
status. The CPU continues executing commands until the result is output from the priority decision section.
The same operation is performed when returning from the sleep status.
Note:
Interrupt request output should be disabled from the stop and sleep mode by the supported
peripheral control register in order that the interrupt factors are not return factors. As the return
request signal from the standby mode is just a logical sum output of all interrupt factor, the contents
of the interrupt level that has been set to the ICR are not taken into account.
■ Cancellation of Interrupt Cause
There is a limit between the command for releasing the interrupt factor and the RETI command under the
interrupt routine. Refer to "3.9 EIT (Exception, Interruption, and Trap)" for details.