UPD4701A

更新时间： 2024-11-13 12:24:59

品牌	Logo	应用领域
日电电子 - NEC		/
页数	文件大小	规格书
16页	83K
描述
MOS INTEGRATED CIRCUIT

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中文翻译

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数据手册

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UPD4701A 数据手册

DATA SHEET

MOS INTEGRATED CIRCUIT

µPD4701A

INCREMENTAL ENCODER COUNTER

DESCRIPTION

The µPD4701A is a counter for an X, Y 2-axis incremental encoder. When a two-phase encoder signal is input

for the X and Y axes, direction discrimination and computation is performed, and count data is output in 8-bit parallel

form. In addition, a 3-contact-point input buffer is incorporated, which is useful for applications which use a pointing

device such as a mouse or track-ball. The CPU checks the switch input flag or count flag and reads the 12-bit count

data in two operations, one for the lower byte and one for the upper byte. The key input flag is output together with

the count data in the upper byte.

FEATURES

•

X, Y 2-axis incremental encoder counter

Counter input (Schmitt-triggered input)

X axis: X^A, XB 2-phase signal

4-multiplication count method used

Y axis: Y^A, YB 2-phase signal

•

Counters: 12-bit binary up/down counters (2 sets, X & Y)

Reset value: 000H

•

Count data output: 8-bit parallel latch output × 2 (including key input flag)

On-chip 3-contact-point key input buffer circuit

CMOS

Single +5 V power supply

PIN CONFIGURATION (Top View)

PIN NAMES

XA, YA : A-phase inputs

X^B, YB : B-phase inputs

RIGHT

X^A

V^DD

RESET X

Y^A

LEFT

MIDDLE

Key inputs

: Chip Select

X/Y

: X/Y Counter Select

: Upper/Lower Byte Select

RESET Y

RIGHT

LEFT

MIDDLE

U/L

D0 to 7 : Data outputs

: Count flag RESET X Counter

: Count flag RESET Y reset inputs

X/Y

U/L

V^SS

Document No. IC-3303 (1st edition)

(O. D. No. IC-6947A)

Date Published March 1997 P

Printed in Japan

1993

12 3 4 5 6 7...16

中文翻译

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与UPD4701A相关器件

型号	品牌	获取价格	描述	数据表
UPD4701AC	NEC	获取价格	MOS INTEGRATED CIRCUIT
UPD4701AC-A	NEC	获取价格	Binary Counter, 4000/14000/40000 Series, Asynchronous, Positive Edge Triggered, 12-Bit, Bi
UPD4701AGT	NEC	获取价格	MOS INTEGRATED CIRCUIT
UPD4702	NEC	获取价格	INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS
UPD4702C	NEC	获取价格	INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS
UPD4702C-A	NEC	获取价格	暂无描述
UPD4702G	NEC	获取价格	INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS
UPD4702G-A	NEC	获取价格	暂无描述
UPD4704	NEC	获取价格	EXTENSION 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS
UPD4704C	NEC	获取价格	EXTENSION 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS