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HCD404669 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 HCD404669
部品説明 Low-Voltage AS Microcomputers
メーカ Hitachi Semiconductor
ロゴ Hitachi Semiconductor ロゴ 



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HCD404669 Datasheet, HCD404669 PDF,ピン配置, 機能
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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™ 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™: Zero Turn-Around Time ZTAT is a trademark of Hitachi, Ltd.
Features
1,152-digit × 4-bit RAM
I/O pins: 47
High-current I/O pins (source: 10 mA max.): 4
High-current I/O pins (sink: 15 mA max.): 5
Timer counters: 3
Input capture: one 8-bit channel
Timer outputs: 2 (with PWM output capability)
Event input: 1 (edge-programmable)
Clock synchronous 8-bit serial interface: 1
DTMF generation circuit
Comparator: 2 channels
System clock oscillator
Ceramic oscillator, crystal oscillator, or external clock operation possible

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Low-Voltage AS Microcomputers

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