HD404612FS datasheet(3/91 Pages) RENESAS

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HD404618 Series

4-Bit Single-Chip Microcomputer

Rev. 6.0

Sept. 1998

Description

The HD404618 Series is designed with the powerful and efficient architecture of the HMCS400 family.

The MCU incorporates a high-precision dual-tone multifrequency (DTMF) circuit, LCD driver/controller,

voltage comparator, and 32-kHz watch oscillator circuit.

The HD404618 Series includes five chips: the HD404612 with 2-kword ROM; the HD404614 with 4-

kword ROM; the HD404616 with 6-kword ROM; the HD404618 with 8-kword ROM; the HD4074618

with 8-kword PROM.

The HD4074618, incorporating PROM, is a ZTAT

™ microcomputer that can dramatically shorten system

development periods and smooth the process from debugging to mass production.

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

Features

• 2048-word × 10-bit ROM (HD404612)

• 4096-word × 10-bit ROM (HD404614)

• 6144-word × 10-bit ROM (HD404616)

• 8192-word × 10-bit ROM (HD404618, HD4074618)

• 1184-digit × 4-bit RAM

• 30 I/O pins

 10 high-current output pins

 CMOS I/O pin circuit configuration

 Input/output pull-up MOS can be selected by software

• On-chip DTMF generator

• LCD controller/driver (32 segments × 4 commons)

• Three timer/counters

• Clock-synchronous 8-bit serial interface

• Six interrupt sources

 Two by external sources

 Four by internal sources

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