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

5.3 BASIC INTERVAL TIMER

The basic interval timer has the following functions:

• Interval timer operation to generate reference time

• Watchdog timer application to detect inadvertent program loop

• Wait time select and count upon standby mode release

• Count contents read

Fig. 5-2 Basic Interval Timer Configuration

From Clock

Generator

fXX/2 5

fXX/2 7

fXX/2 9

fXX/212

MPX

3

Clear

Basic Interval Timer

(8-Bit Frequency Divider)

BTM3 BTM2 BTM1 BTM0 BTM

SET1*

4

8

Internal Bus

Clear

Set BT Interrupt

Request Flag

Vectored

Interrupt

Request

BT

IRQBT Signal

Wait Release

Signal During

Standby Release

* Instruction execution

19

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