UPD75064A データシートの表示（PDF） - NEC => Renesas Technology

部品番号

コンポーネント説明

メーカー

UPD75064A

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

µPD75064, 75066, 75068, 75064(A), 75066(A), 75068(A)

5.4 Basic Interval Timer

The basic interval timer has these functions:

• Interval timer operation which generates a reference timer interrupt

• Watchdog timer application which detects a program runaway

• Selection of wait time for releasing the standby mode and counting the wait time

• Reading out the count value

Figure 5-3. Basic Interval Timer Configuration

From the clock

generator

fX/25

fX/27

fX/29

fX/212

MPX

Clear signal

Clear signal

Basic interval timer

(8-bit frequency divider circuit)

BT

Set

signal

BT interrupt

request flag

IRQBT

Vectored

interrupt

request

signal

3

BTM3 BTM2 BTM1 BTM0 BTM

SET1 Note

4

Note Instruction execution

8

Internal bus

Wait release

signal for standby

release

21

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