HD404669SERIES Datasheet

IC型號(hào)：
HD404669SERIES
PDF描述：
文件大?。?/label>
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PDF頁數(shù)：
142頁
芯片廠家：
ETC

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HD404669 Series

Low-Voltage AS Microcomputers with On-Chip DTMF

Generation Circuit

ADE-202-083B

Rev. 3.0

Sept. 1999

Description

The HD404669 Series microcomputers incorporate a DTMF generation circuit, two comparators, and a

serial interface on chip. They also provide input and output pins with large current handling capacities.

Thus they are 4-bit single-chip microcomputers that are optimal for use in multifunction telephones,

cordless telephones, and other communications equipment.

HD404669 Series microcomputers have a 32.768 kHz sub-oscillator for realtime clock use, providing a

time counting facility, and a variety of power supply modes to reduce current drain.

The HD407A4669 is a ZTAT鈩?microcomputer with on-chip PROM that drastically shortens development

time and ensures a smooth transition from debugging to mass production. (The PROM programming

specifications are the same as for the 27256 type.)

ZTAT鈩? Zero Turn-Around Time ZTAT is a trademark of Hitachi, Ltd.

Features

鈥?/div>

1,152-digit

脳

4-bit RAM

鈥?/div>

I/O pins: 47

錚?/div>

High-current I/O pins (source: 10 mA max.): 4

錚?/div>

High-current I/O pins (sink: 15 mA max.):

鈥?/div>

Timer counters: 3

鈥?/div>

Input capture: one 8-bit channel

鈥?/div>

Timer outputs: 2 (with PWM output capability)

鈥?/div>

Event input: 1 (edge-programmable)

鈥?/div>

Clock synchronous 8-bit serial interface: 1

鈥?/div>

DTMF generation circuit

鈥?/div>

Comparator: 2 channels

鈥?/div>

System clock oscillator

Ceramic oscillator, crystal oscillator, or external clock operation possible

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