UPD75212ACW データシートの表示（PDF） - NEC => Renesas Technology

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UPD75212ACW

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75212A

7. STANDBY FUNCTIONS

Two standby modes (STOP mode and HALT mode) are available for the µPD75212A to decrease power

consumption in the program standby mode.

Table 7-1 Operation Status in Standby Mode

Set instruction

System clock when set

Clock oscillator

Basic interval timer

Serial interface

Timer/event counter

Timer/pulse generator

Watch timer

FIP controller/driver

CPU

Release signal

STOP Mode

HALT Mode

STOP instruction

HALT instruction

Setting enabled only with main system

clock.

Setting enabled with either main system

clock or subsystem clock.

Oscillation stops only with main system Stops only with CPU clock Φ (Oscillation

clock.

continued).

Operation stopped.

Operation (IRQBT set at reference time

intervals).

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.

Operation stopped.

Operation enabled.

Operation enabled only fXT is selected for Operation enabled.

count clock.

Operation disabled (display off mode set before disabling).

Operation stopped.

Interrupt request signal (except INT0, INT1, INT2) enabled by interrupt enable flag

or RESET input.

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