HD404448TF データシートの表示（PDF） - Hitachi -> Renesas Electronics

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HD404448TF

Four timer/counters

Hitachi -> Renesas Electronics 

HD404449 Series

Rev. 6.0

Sept. 1998

Description

The HD404449 Series is a HMCS400-series microcomputer designed to increase program productivity

with large-capacity memory. Each microcomputer has four timers, two serial interfaces, A/D converter,

input capture circuit, 32-kHz oscillator for clock, and four low-power dissipation modes.

The HD404449 Series includes three chips: the HD404448 with 8-kword ROM; the HD404449 with 16-

kword ROM; and HD4074449 with 16-kword PROM (ZTAT™ version).

The HD4074449 is a PROM version (ZTAT™ microcomputer). 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. (The ZTAT™ version is 27256-compatible.)

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

Features

• 8,192-word × 10-bit ROM (HD404448)

16,384-word × 10-bit ROM (HD404449 and HD4074449)

• 1,152-digit × 4-bit RAM

• 64 I/O pins, including 10 high-current pins (15 mA, max)

• Four timer/counters

• Eight-bit input capture circuit

• Three timer outputs (including two PWM outputs)

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

• Two clock-synchronous 8-bit serial interfaces

• A/D converter (4-channel × 8-bit)

• Built-in oscillators

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

 Subclock: 32.768-kHz crystal

• Eleven interrupt sources

 Four by external sources, including two double-edge function

 Seven by internal sources

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