UPD75316BGC datasheet(31/77 Pages) NEC

31 / 77 page

µPD75312B, 75316B

STANDBY FUNCTION

To reduce the power consumption during program wait, the

µPD75316B has two standby modes: STOP mode

and HALT mode.

Table 7-1 Operation Status at Standby Mode

HALT Mode

HALT instruction

Main system clock or subsystem

clock settable

Only CPU clock

Φ stopped

(oscillation continued)

Operable (IRQBT set at reference time

intervals)*

Operable*

Operable

Interrupt request signal from operable

hardware enabled by interrupt enable

flag, or RESET input

STOP Mode

STOP instruction

Only main system clock settable

Only main system clock oscillation

stopped

Stopped

Operable only when external SCK

input selected as serial clock

Operable only when TI0 pin input

specified as count clock

Operable only when fXT selected as

count clock

Operable only when fXT selected as

LCDCL

INT1, 2, 4: Operable

Only INT0 inoperable

Stopped

Interrupt request signal from operable

hardware enabled by interrupt enable

flag, or RESET input

Setting instruction

System clock at setting

Clock generator

Basic interval timer

Serial interface

Timer/event counter

Watch timer

LCD controller

External interrupt

CPU

Cannot be operable during main system clock stop.

Release signal

UPD75316BGC 数据表(PDF) 31 Page - NEC

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