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M41T11_08 Datasheet, PDF (1/29 Pages) STMicroelectronics – Serial real-time clock with 56 bytes of NVRAM | |||
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M41T11
Serial real-time clock with 56 bytes of NVRAM
Features
â Counters for seconds, minutes, hours, day,
date, month, years and century
â 32 KHz crystal oscillator integrating load
capacitance (12.5 pF) providing exceptional
oscillator stability and high crystal series
resistance operation
â Serial interface supports I2C bus (100 kHz
protocol)
â Ultra-low battery supply current of 0.8 µA (typ.
at 3 V)
â 2.0 to 5.5 V clock operating voltage
â Automatic switchover and deselect circuitry
â 56 bytes of general purpose RAM
â Software clock calibration to compensate
crystal deviation due to temperature
â Automatic leap year compensation
â Operating temperature of â40 to 85°C
â Packaging includes a 28-lead SOIC and
SNAPHAT® top (to be ordered separately;
3.3 V to 5.0 V supply voltage only)
â RoHS compliant
â Lead-free second level interconnect
8
1
SO8 (M)
SNAPHAT (SH) battery & crystal
28
1
SOH28 (MH)
May 2008
Rev 8
1/29
www.st.com
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