UPD4992CX View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

UPD4992CX

8-Bit Parallel I/O Calendar Clock

NEC => Renesas Technology 

PIN CONFIGURATION

TP 1

CS1

2

WR 3

A0

4

A1

5

A2

6

RD 7

D0

8

D1

9

VSS

10

BLOCK DIAGRAM

OSC

15 Stage Binary Divider

XIN

1 / 215

µPD4992

20

VDD

19

XIN

18

XOUT

17 CS2

16 D7

15 D6

14 D5

13 D4

12 D3

11 D2

Time Counter

XOUT

CS1

CS2

RD

WR

D0 to D7

8

Data Bus

Controller

Clock Stop

TP

TP Generator

Mode Registor

Control Registor

A0 to A2

2

3

Address Bus

Controller

Address

Decoder

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