UPD178024GC datasheet(31/56 Pages) NEC

No. de pieza	UPD178024GC

Descripción Electrónicos	8-BIT SINGLE-CHIP MICROCONTROLLER

PDF	56 Pages

Scroll/Zoom	100%

Fabricante Electrónico	NEC [NEC]

Página de inicio	http://www.nec.com/

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31 / 56 page

µPD178023, 178024

Data Sheet U14126EJ1V0DS00

5. STANDBY FUNCTION

There are the following two standby functions to reduce the system power consumption.

• HALT mode : The CPU operating clock is stopped.

The average consumption current can be reduced by intermittent operation in combination with

the normal operating mode.

• STOP mode : The system clock oscillation is stopped. All operations by the system clock are stopped and

current consumption can be considerably reduced.

Figure 5-1. Standby Function

6. RESET FUNCTION

There are the following three reset methods.

• External reset input by RESET pin

• Internal reset by watchdog timer runaway time detection

• Internal reset by Power-On Clear (POC).

System Clock Operation

STOP Mode

(System clock

oscillation stopped)

HALT Mode

(Clock supply to CPU is

stopped, oscillation

continued)

Interrupt

Request

Interrupt

Request

HALT

Instruction

STOP

Instruction

UPD178024GC Datasheet(PDF) 31 Page - NEC