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MM58274CV PDF预览

MM58274CV

更新时间: 2024-11-20 22:46:11
品牌 Logo 应用领域
美国国家半导体 - NSC 计时器或实时时钟微控制器和处理器外围集成电路微处理器输出元件双倍数据速率
页数 文件大小 规格书
16页 230K
描述
Microprocessor Compatible Real Time Clock

MM58274CV 技术参数

是否Rohs认证:不符合生命周期:Obsolete
包装说明:QCCJ, LDCC20,.4SQReach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.87Is Samacsys:N
其他特性:PRESCALED XTAL OSCILLATOR OUTPUT FOR RTC总线兼容性:6502; 6800
外部数据总线宽度:4信息访问方法:PARALLEL, DIRECT ADDRESS
中断能力:NJESD-30 代码:S-PQCC-J20
JESD-609代码:e0长度:8.89 mm
端子数量:20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:QCCJ
封装等效代码:LDCC20,.4SQ封装形状:SQUARE
封装形式:CHIP CARRIER峰值回流温度(摄氏度):NOT SPECIFIED
电源:5 V认证状态:Not Qualified
座面最大高度:4.57 mm子类别:Timer or RTC
最大压摆率:1 mA最大供电电压:5.5 V
最小供电电压:4.5 V标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:J BEND端子节距:1.27 mm
端子位置:QUAD最短时间:1/10 SECOND
处于峰值回流温度下的最长时间:NOT SPECIFIED易失性:YES
宽度:8.89 mmuPs/uCs/外围集成电路类型:TIMER, REAL TIME CLOCK
Base Number Matches:1

MM58274CV 数据手册

 浏览型号MM58274CV的Datasheet PDF文件第2页浏览型号MM58274CV的Datasheet PDF文件第3页浏览型号MM58274CV的Datasheet PDF文件第4页浏览型号MM58274CV的Datasheet PDF文件第5页浏览型号MM58274CV的Datasheet PDF文件第6页浏览型号MM58274CV的Datasheet PDF文件第7页 
April 1991  
MM58274C  
Microprocessor Compatible Real Time Clock  
General Description  
Features  
Y
Same pin-out as MM58174A, MM58274B, and  
MM58274  
The MM58274C is fabricated using low threshold metal gate  
CMOS technology and is designed to operate in bus orient-  
ed microprocessor systems where a real time clock and cal-  
endar function are required. The on-chip 32.768 kHz crystal  
controlled oscillator will maintain timekeeping down to 2.2V  
to allow low power standby battery operation. This device is  
pin compatible with the MM58174A but continues timekeep-  
ing up to tens of years. The MM58274C is a direct replace-  
ment for the MM58274 offering improved Bus access cycle  
times.  
Y
Timekeeping from tenths of seconds to tens of years in  
independently accessible registers  
Leap year register  
Y
Y
Hours counter programmable for 12 or 24-hour  
operation  
Y
Y
Buffered crystal frequency output in test mode for easy  
oscillator setting  
Data-changed flag allows simple testing for time  
rollover  
Applications  
Y
Y
Y
Y
Y
Independent interrupting time with open drain output  
Fully TTL compatible  
Point of sale terminals  
Y
Teller terminals  
Low power standby operation (10 mA at 2.2V)  
Low cost 16-pin DIP and 20-pin PCC  
Y
Word processors  
Y
Data logging  
Y
Industrial process control  
Block Diagram  
TL/F/11219–1  
FIGURE 1  
TRI-STATEÉ is a registered trademark of National Semiconductor Corp.  
MicrobusTM is a trademark of National Semiconductor Corp.  
C
1995 National Semiconductor Corporation  
TL/F/11219  
RRD-B30M105/Printed in U. S. A.  

MM58274CV 替代型号

型号 品牌 替代类型 描述 数据表
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