5秒后页面跳转
DS12887A PDF预览

DS12887A

更新时间: 2024-11-26 21:55:31
品牌 Logo 应用领域
美信 - MAXIM 外围集成电路光电二极管时钟
页数 文件大小 规格书
2页 179K
描述
Real-Time Clock

DS12887A 数据手册

 浏览型号DS12887A的Datasheet PDF文件第2页 
DS12887A  
Real-Time Clock  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT (Top View)  
C Drop-in replacement for IBM AT computer  
clock/calendar  
MOT  
N.C.  
N.C.  
AD0  
AD1  
AD2  
AD3  
AD4  
AD5  
AD6  
AD7  
1
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
VCC  
SQW  
NC  
2
3
4
5
6
7
8
9
10  
C Pin compatible with the MC146818B and  
DS1287A  
RCLR  
C Totally nonvolatile with over 10 years of  
operation in the absence of power  
C Self-contained subsystem includes lithium,  
quartz, and support circuitry  
N.C.  
IRQ  
RESET  
DS  
N.C.  
R/W  
AS  
C Counts seconds, minutes, hours, days, day of  
the week, date, month, and year with leap-  
year compensation valid up to 2100  
C Binary or BCD representation of time,  
calendar, and alarm  
11  
12  
CS  
GND  
DS12887A  
24 PDIP Module (700mil)  
C 12-hour or 24-hour clock with AM and PM  
in 12-hour mode  
Package Dimension Information  
http://www.maxim-ic.com/TechSupport/DallasPackInfo.htm  
C Daylight Savings Time option  
C Selectable between Motorola and Intel bus  
timing  
PIN DESCRIPTION  
C Multiplex bus for pin efficiency  
C Interfaced with software as 128 RAM  
locations  
AD0–AD7 - Multiplexed Address/Data Bus  
N.C.  
- No Connect  
MOT  
- Bus Type Selection  
– 14 bytes of clock and control registers  
– 114 bytes of general-purpose RAM  
C Programmable square-wave output signal  
C Bus-compatible interrupt signals (IRQ)  
C Three interrupts are separately software-  
maskable and testable  
CS  
AS  
- RTC Chip-Select Input  
- Address Strobe  
R/ W  
- Read/Write Input  
- Data Strobe  
- Reset Input  
- Interrupt Request Output  
- Square-Wave Output  
- +5V Main Supply  
DS  
RESET  
IRQ  
– Time-of-day alarm once/second to  
once/day  
SQW  
VCC  
– Periodic rates from 122s to 500ms  
– End-of-clock update cycle  
RCLR  
GND  
- RAM Clear  
C Underwriters Laboratory (UL) recognized  
- Ground  
ORDERING INFORMATION  
PART  
PIN-PACKAGE TOP MARK TEMP RANGE  
DS12887A 0°C to +70°C  
DS12887A 24 PDIP Module  
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device  
may be simultaneously available through various sales channels. For information about device errata, click here: http://www.maxim-ic.com/errata.  
1 of 2  
073102  

DS12887A 替代型号

型号 品牌 替代类型 描述 数据表
DS12887A+ MAXIM

类似代替

Real-Time Clocks
DS12887+ MAXIM

类似代替

Real-Time Clock
DS12887 MAXIM

类似代替

Real-Time Clock

与DS12887A相关器件

型号 品牌 获取价格 描述 数据表
DS12887A+ MAXIM

获取价格

Real-Time Clocks
DS1290 DALLAS

获取价格

Logic Circuit, CMOS, PDIP16,
DS1290 MAXIM

获取价格

Logic Circuit, CMOS, PDIP16
DS1291 DALLAS

获取价格

Logic Circuit, CMOS, PDIP16,
DS1291N ETC

获取价格

ELECTRONIC CONFIGURATOR|CMOS|DIP|16PIN|PLASTIC
DS1293 DALLAS

获取价格

Logic Circuit, CMOS, PDIP24,
DS1293 MAXIM

获取价格

Logic Circuit, CMOS, PDIP24
DS1293N ETC

获取价格

ELECTRONIC CONFIGURATOR|CMOS|DIP|24PIN|PLASTIC
DS12B887 DALLAS

获取价格

Real Time Clock
DS12C885 ETC

获取价格