HD4074318H Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HD4074318H

4-bit HMCS400-series microcomputer

Hitachi -> Renesas Electronics 

HD404318 Series

Rev. 6.0

Sept. 1998

Description

The HD404318 Series is 4-bit HMCS400-series microcomputer with large-capacity memory designed to

increase program productivity. Each microcomputer has an A/D converter and input capture timer built in.

They also come with high-voltage I/O pins that can directly drive a fluorescent display.

The HD404318 Series includes four chips: the HD404318 with 8-kword ROM; the HD404316 with 6-

kword ROM; the HD404314 with 4-kword ROM; the HD4074318 with 8-kword PROM.

The HD4074318 is a PROM version ZTAT™ microcomputer. Programs can be written to the PROM by a

PROM writer, which can dramatically shorten system development periods and smooth the process from

debugging to mass production. (The PROM program specifications are the same as for the 27256.)

ZTAT™: Zero Turn Around Time ZTAT is a trademark of Hitachi Ltd.

Features

• 34 I/O pins

 One input-only pin

 33 input/output pins: 21 pins are high-voltage pins (40 V, max.)

• On-chip A/D converter (8-bit × 8-channel)

• Three timers

 One event counter input

 One timer output

 One input capture timer

• 8-bit clock-synchronous serial interface (1 channel)

• Alarm output

• Built-in oscillators

 Ceramic or crystal oscillator

 External clock drive is also possible

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