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1339C-2SRI PDF预览

1339C-2SRI

更新时间: 2024-01-25 21:27:02
品牌 Logo 应用领域
艾迪悌 - IDT 时钟
页数 文件大小 规格书
27页 358K
描述
REAL-TIME CLOCK WITH SERIAL I2C INTERFACE

1339C-2SRI 数据手册

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DATASHEET  
2
REAL-TIME CLOCK WITH SERIAL I C INTERFACE  
IDT1339  
General Description  
Features  
The IDT1339 serial real-time clock (RTC) is a low-power  
clock/date device with two programmable time-of-day  
alarms and a programmable square-wave output. Address  
and data are transferred serially through an I2C bus. The  
clock/date provides seconds, minutes, hours, day, date,  
month, and year information. The date at the end of the  
month is automatically adjusted for months with fewer than  
31 days, including corrections for leap year. The clock  
operates in either the 24-hour or 12-hour format with  
AM/PM indicator. The IDT1339 has a built-in power-sense  
circuit that detects power failures and automatically  
switches to the backup supply, maintaining time, date, and  
alarm operation.  
Real-Time Clock (RTC) counts seconds, minutes, hours,  
day, date, month, and year with leap-year compensation  
valid up to 2100  
Packaged in 8-pin MSOP, 8-pin SOIC, or 16-pin SOIC  
(surface-mount package with an integrated crystal)  
Fast mode I2C Serial interface  
Two time-of-day alarms  
Programmable square-wave output  
Oscillator stop flag  
Automatic power-fail detect and switch circuitry  
Trickle-charge capability  
Applications  
Industrial temperature range (-40 to +85°C)  
Handhelds (GPS, POS terminals)  
Consumer Electronics (Set-Top Box, Digital Recording,  
Network Applications)  
Office (Fax/Printers, Copiers)  
Medical (Glucometer, Medicine Dispensers)  
Telecomm (Routers, Switches, Servers)  
Other (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  
X2  
MUX/  
Buffer  
32.768 kHz  
Oscillator and  
Divider  
SQW/INT  
GND  
VCC  
Clock,  
Calendar  
Counter  
Control  
Logic  
Power  
Control  
Trickle  
Charger  
VBACKUP  
SCL  
SDA  
I2C  
Interface  
1 Byte 7 Bytes 7 Bytes 1 Byte  
Control Buffer Alarm Status  
IDT® REAL-TIME CLOCK WITH SERIAL I2C INTERFACE  
1
IDT1339  
REV K 032910  

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