M41T11M6E

May 2008 Rev 8 1/29 1 M41T11 Serial real-time clock with 56 bytes of 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 I 2 C bus (100 kHz protocol) ■ Ultra-low battery supply current of 0.8 μA (typ. at 3 V) ■ 2.0 to 5.5 V clock operating voltage ■ Automatic switchover and deselect 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 includes a 28-lead SOIC and SNAPHAT ? top (to be ordered separately; 3.3 V to 5.0 V supply voltage only) ■ RoHS compliant – Lead-free second level interconnect 8 1 28 1 SO8 (M) SNAPHAT (SH) battery & crystal SOH28 (MH) www.st.com

August 2006 Rev 6 1/29 1 M41T11 Serial Real Time Clock with 56 Bytes of NVRAM Feature summary ■ Counters for seconds, minutes, hours, day, date, month, years and century ■ 32KHz crystal oscillator integrating load capacitance (12.5pF) providing exceptional oscillator stability and high crystal series resistance operation ■ Serial interface supports I 2 C bus (100kHz protocol) ■ Ultra-low battery supply current of 0.8μA (typ@3V) ■ 2.0 to 5.5V clock operating voltage ■ Automatic switch-over and deselect 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 includes a 28-Lead SOIC and SNAPHAT ? TOP (to be ordered separately; 3.3V to 5.0V supply voltage only) 8 1 SO8 (M) SNAPHAT (SH) Battery & Crystal 28 1 SOH28 (MH) www.st.com

August 2006 Rev 6 1/29 1 M41T11 Serial Real Time Clock with 56 Bytes of NVRAM Feature summary ■ Counters for seconds, minutes, hours, day, date, month, years and century ■ 32KHz crystal oscillator integrating load capacitance (12.5pF) providing exceptional oscillator stability and high crystal series resistance operation ■ Serial interface supports I 2 C bus (100kHz protocol) ■ Ultra-low battery supply current of 0.8μA (typ@3V) ■ 2.0 to 5.5V clock operating voltage ■ Automatic switch-over and deselect 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 includes a 28-Lead SOIC and SNAPHAT ? TOP (to be ordered separately; 3.3V to 5.0V supply voltage only) 8 1 SO8 (M) SNAPHAT (SH) Battery & Crystal 28 1 SOH28 (MH) www.st.com

May 2008 Rev 8 1/29 1 M41T11 Serial real-time clock with 56 bytes of 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 I 2 C bus (100 kHz protocol) ■ Ultra-low battery supply current of 0.8 μA (typ. at 3 V) ■ 2.0 to 5.5 V clock operating voltage ■ Automatic switchover and deselect 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 includes a 28-lead SOIC and SNAPHAT ? top (to be ordered separately; 3.3 V to 5.0 V supply voltage only) ■ RoHS compliant – Lead-free second level interconnect 8 1 28 1 SO8 (M) SNAPHAT (SH) battery & crystal SOH28 (MH) www.st.com