参数资料
型号: 1339-31DCGI8
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟/数据恢复及定时提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封装: 0.150 INCH, ROHS COMPLIANT, SOIC-8
文件页数: 1/26页
文件大小: 330K
代理商: 1339-31DCGI8
DATASHEET
REAL-TIME CLOCK WITH SERIAL I2C INTERFACE
IDT1339
IDT
REAL-TIME CLOCK WITH SERIAL I2C INTERFACE
1
IDT1339
REV N 060311
General Description
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.
Applications
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)
Features
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
Industrial temperature range (-40 to +85°C)
Underwriters Laboratory (UL) recognized
Block Diagram
VCC
GND
VBACKUP
SCL
SDA
Crystal inside package
for 16-pin SOIC ONLY
X1
X2
1 Hz/4.096 kHz/
8.192 kHz/32.768 kHz
SQW/INT
Power
Control
I2C
Interface
32.768 kHz
Oscillator and
Divider
Control
Logic
MUX/
Buffer
Clock,
Calendar
Counter
1 Byte
Control
7 Bytes
Buffer
T
rickl
e
Cha
rger
By
te
7 Bytes
Alarm
Trickle
Charger
1 Byte
Status
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