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UPD4991ACX PDF预览

UPD4991ACX

更新时间: 2024-11-19 22:52:35
品牌 Logo 应用领域
日电电子 - NEC 计时器或实时时钟微控制器和处理器外围集成电路光电二极管双倍数据速率
页数 文件大小 规格书
32页 133K
描述
4-BIT PARALLEL I/O CALENDAR CLOCK

UPD4991ACX 技术参数

生命周期:Obsolete包装说明:0.300 INCH, PLASTIC, DIP-8
Reach Compliance Code:unknown风险等级:5.76
Is Samacsys:N最大时钟频率:0.032 MHz
外部数据总线宽度:4信息访问方法:PARALLEL, DIRECT ADDRESS
JESD-30 代码:R-PDIP-T18端子数量:18
计时器数量:最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装形状:RECTANGULAR
封装形式:IN-LINE认证状态:Not Qualified
座面最大高度:5.08 mm最大供电电压:5.5 V
最小供电电压:2 V标称供电电压:5 V
表面贴装:NO技术:MOS
温度等级:INDUSTRIAL端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
宽度:7.62 mmuPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCK
Base Number Matches:1

UPD4991ACX 数据手册

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DATA SHEET  
MOS INTEGRATED CIRCUIT  
µPD4991A  
4-BIT PARALLEL I/O CALENDAR CLOCK  
The µPD4991A is a CMOS integrated circuit that has the ability to input/output 4-bit parallel time data and calendar  
data to/from a microcomputer and includes an alarm function.  
Its reference oscillation frequency is 32.768 kHz. Hour, minute, second, year, month, day, and date data is stored  
internally.  
The µPD4991A consumes 30 % less power than the µPD4991.  
FEATURES:  
Time (hour, minute, and second) and calendar (leap year, year, month, day, and date) counters  
Leap year can be automatically identified or set  
12- and 24-hour modes selectable  
4-bit parallel input/output in BCD data format  
Alarm function (hour, minute, second, month, day, date)  
One of 0.1, 1.0, 10, 30, and 60-s interval timer outputs selectable  
One of 2048, 1024, 64, 16, 1 Hz, 1-pulse output, and HL output selectable as alarm coincidence output  
Upward compatible with µPD4991  
Low power consumption: 2 µA typ. (VDD = 2.4 V)  
ORDERING INFORMATION:  
Part Number  
Package  
µPD4991ACX  
µPD4991AGS  
18-pin plastic DIP (300 mil)  
20-pin plastic SOP (300 mil)  
Document No. IC-3309 (1st edition)  
(O.D. No. IC-7892A)  
Date Published March 1997 P  
Printed in Japan  
1993  
©

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