HD404628RFS datasheet(3/157 Pages) RENESAS

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HD404629R Series

AS Microcomputer Incorporating a DTMF Generator Circuit

ADE-202-048D

Rev.5.0

Sept. 1999

Description

The HD404629R Series is part of the HMCS400-Series microcomputers designed to increase program

productivity and also incorporate large-capacity memory. Each microcomputer has a high precision dual-

tone multifrequency (DTMF) generator, LCD controller/driver, A/D converter, input capture circuit, 32-

kHz oscillator for clock, and four low-power dissipation modes.

The HD404629R Series includes four chips: the HD404628R with 8-kword ROM; the HD4046212R with

12-kword ROM; the HD404629R with 16-kword ROM; the HD4074629 with 16-kword PROM.

A program 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.

Features

• 1,876-digit × 4-bit RAM

• 44 I/O pins, including 10 high-current pins (15 mA, max.) and 20 pins multiplexed with LCD segment

pins

• Four timer/counters

• 8-bit input capture circuit

• Three timer outputs (including two PWM out-puts)

• Two event counter inputs (including one double-edge function)

• Clock-synchronous 8-bit serial interface

• A/D converter (4 channels × 8 bits)

• LCD controller/driver (52 segments × 4 commons)

• On-chip DTMF generator

• Built-in oscillators

 Main clock: 4-MHz ceramic (an external clock is also possible)

 Subclock: 32.768-kHz crystal

• Eleven interrupt sources

 Five by external sources, including three double-edge functions

 Six by internal sources

• Subroutine stack up to 16 levels, including interrupts

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