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M41ST84W 数据表(PDF) 1 Page - STMicroelectronics |
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M41ST84W 数据表(HTML) 1 Page - STMicroelectronics |
1 / 34 page August 2008 Rev 8 1/34 1 M41ST84W 3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions Features ■ Automatic battery switchover and deselect – Power-fail deselect, VPFD = 2.60 V (nom) –Switchover, VSO = 2.50 V (nom) ■ 400 kHz I2C serial interface ■ 3.0/3.3 V operating voltage –VCC = 2.7 to 3.6 V ■ Ultra-low battery supply current of 500 nA (max) ■ RoHS compliance Lead-free components are compliant with the RoHS directive Serial RTC features ■ 400 kHz I2C ■ 44 bytes of general purpose NVRAM ■ Counters for: – Seconds, minutes, hours, day, date, month, and year –Century – 10ths/100ths of seconds – Clock calibration register allows compensation for crystal variations over temperature ■ Programmable alarm with interrupt – Functions during battery backup mode ■ Power-down timestamp (HT bit) ■ 2.5 to 5.5 V oscillator operating voltage ■ 32 KHz oscillator with integrated load capacitance (12.5 pF) ■ Battery low flag Microprocessor supervisory features ■ Programmable watchdog timer – 62.5 ms to 128 s time-out period ■ Power-on reset/low voltage detect output ■ PFI/PFO with 1.25 V reference Other features ■ Programmable squarewave generator (1 Hz to 32 KHz) ■ –40°C to +85°C operation ■ Packaged in a 16-lead SOIC 16 1 SO16 (MQ) www.st.com |
类似零件编号 - M41ST84W_08 |
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类似说明 - M41ST84W_08 |
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