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产品名称：M41T81S
产品封装：SOP-8
产品品牌：STMicroelectronics
PDF文档：下载
库 存：查看
电 话：0755-83035811
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产品介绍
M41T81S
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 temperature of –40 to 85 °C
- Package options include an 8-lead SOIC or 18-lead embedded crystal SOIC
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