UPD78320 Datasheet, PDF (47/88 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78320, 78322
5. STANDBY FUNCTIONS
The µPD78322 has the standby function to decrease the power consumption of the system. The following two modes
are available for execution of the standby function.
• HALT mode ........ Mode for halting the CPU operation clock. The total power consumption of the
system can be decreased by intermittent operation in combination with the normal
operating mode.
• STOP mode ....... Mode for stopping the whole system by stopping the oscillator. Considerably low
power consumption with leak current only can be set.
Each mode is set by the software. Figure 5-1 shows standby mode (STOP/HALT mode) transition.
Figure 5-1. Standby Status Transition
Normal
Status
STOP
HALT
47