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參數(shù)資料
| 型號： | UPD4992GS |
| 廠商： | NEC Corp. |
| 英文描述： | 8-Bit Parallel I/O Calendar Clock |
| 中文描述： | 8位并行I / O時鐘日歷 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 101K |
| 代理商： | UPD4992GS |
1992
PRELIMINARY DATA SHEET
The
μ
PD4992 is a CMOS integrated circuit which outputs 8-bit parallel time and calendar data in a system in which
a microprocessor is employed. The
μ
PD4992 operates at 32.768 kHz and provides year, month, day of month, day
of week, hour, minute, and second data to a system. The
μ
PD4992 internally contains a voltage regulator so that
low power consumption operation and high accuracy are realized even if the supply voltage varies. The
μ
PD4992
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 (I
DD
= 2
μ
A MAX. at V
DD
= 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
Package
μ
PD4992CX
20-pin plastic DIP (300 mil)
μ
PD4992GS
20-pin plastic SOP (300 mil)
μ
PD4992GS-T1, T2
20-pin plastic SOP (300 mil)
Provided on adhesive tape
μ
PD4992GS-E2
20-pin plastic SOP (300 mil)
Provided on embossed carrier tape
μ
PD4992
MOS INTEGRATED CIRCUIT
8-Bit Parallel I/O Calendar Clock
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
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