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M41T56 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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M41T56 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 27 page December 2011 Doc ID 6104 Rev 9 1/27 1 M41T56 Serial real-time clock (RTC) with 56 bytes NVRAM Features ■ Counters for seconds, minutes, hours, day, date, month, years, and century ■ 32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation ■ Serial interface supports I2C bus (100 kHz protocol) ■ Ultra-low battery supply current of 450 nA (typ at 3 V) ■ 5 V ±10% supply voltage ■ Timekeeping down to 2.5 V ■ 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 °C to 85 °C ■ Available in an 8-lead, 150-mil, plastic SOIC (SO8) ■ RoHS compliant – Lead-free second level interconnect 8 1 SO8 150-mil width www.st.com |
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