µPD75216A
7. STANDBY FUNCTIONS
Two standby modes (STOP mode and HALT mode) are available for the µPD75216A to decrease power
consumption in the program standby mode.
Table 7-1 Operation Status in Standby Mode
STOP Mode
STOP instruction
HALT Mode
HALT instruction
Set instruction
Setting enabled only with main system
clock.
Setting enabled with either main system
clock or subsystem clock.
System clock when set
Oscillation stops only with main system
clock.
Stops only with CPU clock Φ (Oscillation
Clock oscillator
continued).
Operation stopped.
Operation (IRQBT set at reference time
intervals).
Basic interval timer
Serial interface
Operation enabled only when external
SCK input is selected for serial clock.
Operation enabled when serial clock other
than Φ is specified.
Operation enabled only when TI0 pin
input is specified for count clock.
Operation enabled.
Timer/event counter
Operation enabled.
Operation stopped.
Timer/pulse generator
Watch timer
Operation enabled only fXT is selected for Operation enabled.
count clock.
Operation disabled (display off mode set before disabling).
Operation stopped.
FIP controller/driver
CPU
Interrupt request signal (except INT0, INT1, INT2) enabled by interrupt enable flag
or RESET input.
Release signal
30
NEC [ NEC ]
