UPD4704C Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPD4704C

EXTENSION 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS

NEC => Renesas Technology 

DATA SHEET

MOS INTEGRATED CIRCUIT

µPD4704

EXTENSION 8-BIT UP/DOWN COUNTER

CMOS INTEGRATED CIRCUITS

DESCRIPTION

The µPD4704 is 8-bit up/down counters for extension of the µPD4702 incremental encoder counter. They perform

an up/down-count using an 8-bit width with a µPD4702 carry or borrow signal as input. In addition, a carry output

and borrow output are also provided for further extension of the count width, enabling extension to be performed

in 8-bit units.

FEATURES

• 8-bit up/down counter for extension of µPD4702

• Count data output controllable (latch and 3-state output)

• Extension carry and borrow outputs

• CMOS, single +5 V power supply

PIN NAMES

Up

: Up-count input

Down : Down-count input

Reset : Counter reset input

STB : Latch strobe signal input

OE

: Output control signal input

CD0-7 : Count data outputs

Carry : Carry pulse output

Borrow : Borrow pulse output

ORDERING INFORMATION

Part Number

µPD4704C

µPD4704G

Package

20-pin plastic DIP (300 mil)

20-pin plastic SOP (300 mil)

PIN CONFIGURATION (Top View)

Reset

1

A

2

B

3

NC

4

CD0

5

CD1

6

CD2

7

CD3

8

NC

9

VSS

10

20

VDD

19

Carry

18

Borrow

17

STB

16

OE

15

CD7

14

CD6

13

CD5

12

CD4

11

NC

Document No. IC-3305A (2nd edition)

(O. D. No. IC-8762B)

Date Published April 1997 P

Printed in Japan

©

1993

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