STMicroelectronics M41T81S
Serial access real-time clock
| Part No. | M41T81S |
|---|---|
| Datasheet | M41T81S Download |
| Manufacturer |  STMicroelectronics |
| Description | Serial access real-time clock |
| Buy | Stock & Price |
FEATURES
● Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century● 32 KHz crystal oscillator with integrated load capacitance (12.5 pf) which provides exceptional oscillator stability and high crystal series resistance operation)
● Oscillator stop detection (monitors clock operation)
● Serial interface supports I2C bus (400 kHz protocol)
● Ultra-low battery supply current of 0.6 µA (typ)
● 2.0 to 5.5 V clock operating voltage
● Automatic switchover and deselect circuitry (fixed reference) which provides full operation in 3.0 V applications)
● VCC = 2.7 to 5.5 V
● 2.5 V ≤ VPFD ≤ 2.7 V
● Power-down time-stamp (HT bit) which allows determination of time elapsed in battery backup
● Battery low flag
● Programmable alarm and interrupt function (valid even during battery backup mode)
● Accurate programmable watchdog timer (from 62.5 ms to 128 s)
● Software clock calibration (to compensate for crystal deviation due to temperature)
● Operating t...
