slp_tsk
As a result, the invoking task is unlinked from the ready queue and excluded from the RI78V4 scheduling subject.
If a wakeup request has been queued to the target task (the wakeup request counter is not set to 0x0) when this service call is issued, this service call does not move the state but decrements the wakeup request counter (by subtracting 0x1 from the wakeup request counter).