參數資料
型號: M41T66Q6F
廠商: STMICROELECTRONICS
元件分類: 時鐘/數據恢復及定時提取
英文描述: REAL TIME CLOCK, QCC16
封裝: 3 X 3 MM, ROHS COMPLIANT, QFN-16
文件頁數: 1/33頁
文件大?。?/td> 336K
代理商: M41T66Q6F
October 2008
Rev 1
1/41
1
M41T66
Serial access real-time clock with alarms
Features
Counters for tenths/hundredths of seconds,
seconds, minutes, hours, day, date, month,
year, and century
32 KHz crystal oscillator integrating load
capacitance and high crystal series resistance
operation
Oscillator stop detection monitors clock
operation
Serial interface supports I2C bus (400 kHz)
525 nA timekeeping current at 3 V
Low operating current of 35 A (at 400 kHz)
Timekeeping down to 1.0 V
1.3 V to 4.4 V I2C bus operating voltage
– Allows use in lithium ion rechargeable
applications
32 KHz square wave on power-up to drive a
microcontroller in low power mode
Programmable (1 Hz to 32 KHz) square wave
Programmable alarm with interrupt function
Accurate programmable watchdog
(from 62.5 ms to 31 min)
Software clock calibration to compensate
deviation of crystal due to temperature
Automatic leap year compensation
Operating temperature of –40 to 85°C
Lead-free 16-pin QFN package
QFN16 (Q) 3 mm x 3 mm
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