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ZEN2003AF ( high speed 24bit up/down counter )[Discontinued]
Release:1989/12/01


The ZEN2003AF is a 24 bit programmable universal counter LSI.
The ZEN2003AF counts phase-shifted signals and up/down pulse signals that are generated from rotary encoders or linear scales.
The counter response speed is up to 20MHz(max).


<Features>
24bit binary up/down counter.
Counter response speed: 20Mcps.(max)(CLK fo=20MHz at 50% duty).
Input frequency of count pulse :
*Phase-shifted signal input: A/B phase input DC--5MHz(less than fo * 1/4).
*Up/down pulse signal input: Up/down input DC--10MHz(less than fo * 1/2).
Edge evaluation selection : single/double/quad.
Count value coincidence detection.
24bit parallel direct output.
QFP64pin.
5V power supply.


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