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1338C-31SRI8 PDF预览

1338C-31SRI8

更新时间: 2024-02-20 08:52:51
品牌 Logo 应用领域
艾迪悌 - IDT 电池时钟
页数 文件大小 规格书
23页 317K
描述
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM

1338C-31SRI8 数据手册

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DATASHEET  
REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM  
IDT1338  
General Description  
Features  
The IDT1338 is a serial real-time clock (RTC) device that  
consumes ultra-low power and provides a full binary-coded  
decimal (BCD) clock/calendar with 56 bytes of battery  
backed Non-Volatile Static RAM. The clock/calendar  
provides seconds, minutes, hours, day, date, month, and  
year information. The clock operates in either the 24-hour  
or 12-hour format with AM/PM indicator. The end of the  
month date is automatically adjusted for months with fewer  
than 31 days, including corrections for leap year. Access to  
the clock/calendar registers is provided by an I2C interface  
capable of operating in fast I2C mode. Built-in Power-sense  
circuitry detects power failures and automatically switches  
to the backup supply, maintaining time and date operation.  
Real-Time Clock (RTC) counts seconds, minutes, hours,  
day, date, month, and year with leap-year compensation  
valid up to 2100  
56-Byte battery-backed Non Volatile RAM for data  
storage  
Fast mode I2C Serial interface  
Automatic power-fail detect and switch circuitry  
Programmable square-wave output  
Packaged in 8-pin MSOP, 8-pin SOIC, or 16-pin SOIC  
(surface-mount package with an integrated crystal)  
Industrial temperature range (-40°C to +85°C)  
Applications  
Telecom (Routers, Switches, Servers)  
Handheld (GPS, Point of Sale POS terminals)  
Consumer Electronics (Set-Top Box, Digital Recording,  
Network Applications, Digital photo frames)  
Office (Fax/Printers, Copiers)  
Medical (Glucometer, Medicine Dispensers)  
Others (Thermostats, Vending Machines, Modems, Utility  
Meters)  
Block Diagram  
Crystal inside package  
for 16-pin SOIC ONLY  
1 Hz/4.096 kHz/  
8.192 kHz/32.768 kHz  
X1  
32.768 kHz  
Oscillator and  
Divider  
MUX/  
Buffer  
SQW/OUT  
X2  
VCC  
GND  
VBAT  
Power  
Control  
Control  
Logic  
Clock, Calendar  
Counter  
SCL  
SDA  
I2C  
Interface  
56 Byte  
RAM  
1 Byte 7 Bytes  
Buffer  
Control  
IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM  
1
IDT1338  
REV K 032910  

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