Features

· Ultra-low battery supply current of 365 nA

· Factory-calibrated accuracy of ±5 ppm typical

after 2 reflows (SOX18)

– Much better accuracies achievable using

built-in programmable analog and digital

calibration circuits

· 2.0 V to 5.5 V clock operating voltage

· Counters for tenths/hundredths of seconds,

seconds, minutes, hours, day, date, month,

year, and century

· Automatic switchover and reset output circuitry

(fixed reference)

– M41T83S: VCC = 3.00 V to 5.50 V

– M41T83R: VCC = 2.70 V to 5.50 V

– M41T83Z: VCC = 2.38 V to 5.50 V

· Serial interface supports I2C bus (400 kHz

protocol)

· Programmable alarm with interrupt function

(valid even during battery backup mode)

· Optional 2nd programmable alarm available

· Square wave output defaults to 32 KHz on

power-up (M41T83 only)

· RESET (RST) output

· Watchdog timer

· Programmable 8-bit counter/timer

· 7 bytes of battery-backed user SRAM

· Battery low flag

· Low operating current of 80 μA

· Oscillator stop detection

· Battery or SuperCap™ backup

· Operating temperature of –40 °C to 85 °C

· Package options

– a 16-lead QFN (M41T83)

– an 8-lead SOIC (M41T82) or

– an 18-lead embedded crystal SOIC

(M41T83)

· RoHS compliance: lead-free components are

compliant with the RoHS directive