UPD4992CX-A

更新时间： 2024-11-24 12:57:59

品牌	Logo	应用领域
日电电子 - NEC		时钟
页数	文件大小	规格书
16页	102K
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数据手册

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UPD4992CX-A 数据手册

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

Package

20-pin plastic DIP (300 mil)

20-pin plastic SOP (300 mil)

µPD4992GS

µPD4992GS-T1, T2

20-pin plastic SOP (300 mil)

Provided on adhesive tape

µPD4992GS-E2

20-pin plastic SOP (300 mil)

Provided on embossed carrier tape

The inform ation in this docum ent is subject to change w ithout notice.

Document No. ID-3084 (1st edition)

(O.D. No. ID-8222)

Date Published March 1997 P

Printed in Japan

1995

1992

12 3 4 5 6 7...16

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