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M41T83RM6F Datasheet(PDF) 1 Page - STMicroelectronics |
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M41T83RM6F Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 58 page  March 2007 Rev 4 1/58 1 M41T82 M41T83 Serial RTC with battery switchover Features ■ 2.0 to 5.5V clock operating voltage ■ Ultra-low battery supply current of 365nA ■ Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century ■ Programmable clock calibration (analog and digital) ■ Automatic switchover and reset output circuitry (fixed reference) –M41T83S VCC = 3.00V to 5.50V (2.85V ≤ VRST ≤ 3.00V) –M41T83R VCC = 2.70V to 5.50V (2.55V ≤ VRST ≤ 2.70V) –M41T83Z VCC = 2.38V to 5.50V (2.25V ≤ VRST ≤ 2.38V) ■ Serial interface supports I2C Bus (400kHz protocol) ■ Programmable alarm with interrupt function (valid even during battery back-up mode) ■ Optional 2nd programmable alarm available ■ Square wave output defaults to 32KHz 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 ■ Power-down time stamp (HT bit) ■ Low operating current of 80µA 1. Contact local ST sales office for availability of SOX18 package. ■ Oscillator stop detection ■ Battery or Super-cap™ back-up ■ Operating temperature of –40°C to 85°C ■ Package options include: – a 16-lead QFN (M41T83), – an 18-lead embedded crystal SOIC (M41T83), or – an 8-lead SOIC (M41T82) ■ RoHS compliance: lead-free components are compliant with the RoHS directive. SOX18 (MY, 18-pin, 300mil SOIC QFN16, 4mm x 4mm (QA) SO8 (M) 1 18 with Embedded Crystal)1 (VFQFPN16) www.st.com |
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