UPD784224 Datasheet, PDF (53/92 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLERS

µPD784224, 784225, 784224Y, 784225Y
Figure 10-1. Transition of Standby Status
Macro
service
Power-
saving HALT
mode
(standby)
Power-saving HALT mode is set. _Power-
saving mode
(operation on
Interrupt request^{Note 1} subsystem
clock)
Power-saving IDLE mode is set.
Power-
NMI, INTP0 to INTP6 input, saving IDLE
INTWT^{Note 2}
mode
(standby)
Interrupt
request of
masked interrupt
RESET ^input
Interrupt
request of
masked interrupt
Normal
operation
(operation on
main system
clock)
Macro service request
End of one processing
End of macro service
Macro
service
Sets ^{STOP mode}
STOP
(standby)
Interrupt
request of
masked
interrupt
IDLE
(standby)
Interrupt
request of
masked
interrupt
INNTMWI,TI,NkTePy0retotuIrNnTinRPtEe6rSirnuEppTut _tNi,nopteu2t
Waits for
oscillation
stabilization
Interrupt
request of
masked
interrupt
HALT
(standby)
RESET ^input
Notes 1. Only unmasked interrupt requests
2. Only unmasked INTP0 to INTP6, INTWT, key return interrupt (P80 to P87)
Remark NMI is valid only for an external input. The watchdog timer cannot be used for the release of standby
(HALT mode/STOP mode/IDLE mode).
Data Sheet U12376EJ1V0DS00
53