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M41T56 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. M41T56
Description  512 bit 64b x8 Serial Access TIMEKEEPER SRAM
Download  28 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T56 Datasheet(HTML) 1 Page - STMicroelectronics

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October 2006
Rev 5
1/28
1
M41T56
Serial Real Time Clock with 56 bytes NVRAM
Feature summary
Counters for seconds, minutes, hours, day,
date, month, years, and century
32 KHz crystal oscillator integrating load
capacitance (12.5pF) providing exceptional
oscillator stability and high crystal series
resistance operation
Serial interface supports I2C Bus (400kHz
protocol)
Ultra-low battery supply current of 450nA
(typ@3V)
5V ±10% supply voltage
Timekeeping down to 2.5V
Automatic power-fail detect and switch circuitry
56 bytes of general purpose RAM
Software clock calibration to compensate
crystal deviation due to temperature
Automatic leap year compensation
Operating temperature of –40 to 85°C
Packaging options include:
– 28-lead SOIC and SNAPHAT® TOP (to be
ordered separately)
–SO8N
8
1
SO8N (M) 150mil width
28
1
SNAPHAT (SH) battery & crystal
SOH28 (MH)
www.st.com


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