UPD78098 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD78098

8-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD78001B(A), 78002B(A)

5.2 CLOCK GENERATOR

There are two types of clock generator: main system clock and subsystem clock.

The instruction exection time can be changed.

• 0.4 µs/0.8 µs/1.6 µs/3.2 µs/6.4 µs (mainsystem clock: at 10.0 MHz operation)

• 122 µs (subsystem clock: at 32.768 KHz operation)

Fig. 5-1 Clock Generator Block Diagram

XT1/P04

XT2

X1

X2

Subsystem fXT

Clock

Osicillator

Main

System

fX

Clock

Osicillator

STOP

Prescaler

fX fX fX fX

2 22 23 24

Prescaler

Watch Timer

Clock Output

Function

Clock to

Peripheral

Hardware

Selector

Standby

Control

Circuit

Wait

Control

Circuit

CPU Clock

(fCPU)

INTP0

Sampling Clock

17

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