UPD4992CX 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD4992CX

8-Bit Parallel I/O Calendar Clock

NEC => Renesas Technology 

PRELIMINARY DATA SHEET

MOS INTEGRATED CIRCUIT

µPD4992

8-Bit Parallel I/O Calendar Clock

The µPD4992 is a CMOS integrated circuit which outputs 8-bit parallel time and calendar data in a system in which

a microprocessor is employed. The µPD4992 operates at 32.768 kHz and provides year, month, day of month, day

of week, hour, minute, and second data to a system. The µPD4992 internally contains a voltage regulator so that

low power consumption operation and high accuracy are realized even if the supply voltage varies. The µPD4992

uses the 8-bit bus to facilitate interfacing with a microprocessor.

FEATURES:

• Internal counter for time (hour, minute, second), and calendar (leap year, year, month, day of month, day of week)

• Super low power consumption (IDD = 2 µA MAX. at VDD = 2.4 V)

• Automatic determination of leap year, manual setting possible

• 12 hour/24 hour mode selectable

• 8-bit parallel input/output in BCD data format

• 12 kinds of interval timer output (can be used as watchdog timer)

• Internal voltage detection circuit for automatic determination of battery run-down

• High accuracy

ORDERING INFORMATION:

Order Code

µPD4992CX

µPD4992GS

µPD4992GS-T1, T2

µPD4992GS-E2

Package

20-pin plastic DIP (300 mil)

20-pin plastic SOP (300 mil)

20-pin plastic SOP (300 mil)

Provided on adhesive tape

20-pin plastic SOP (300 mil)

Provided on embossed carrier tape

The information in this document is subject to change without notice.

Document No. ID-3084 (1st edition)

(O.D. No. ID-8222)

Date Published March 1997 P

Printed in Japan

©

19925

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