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BUY M41T81M6F https://www.utsource.net/itm/p/1104596.html
Serial Access Real-Time Clock with Alarms
M41T81M6F is a low-power serial real-time clock (RTC) with an integrated crystal and backup battery input. It is manufactured by STMicroelectronics and is available in an 8-pin SOIC package. Description: The M41T81M6F is a low-power serial real-time clock (RTC) with an integrated crystal and backup battery input. It includes a clock/calendar, alarm, and watchdog timer functions. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The clock/calendar also features a programmable 1-Hz square-wave output and an adjustable frequency output. The alarm can be programmed to generate an interrupt on a specific date and time. The watchdog timer can be used to generate an interrupt or reset after a programmable time-out period. Features: Low power consumption: Operating voltage range: 2.0 V to 5.5 V Clock/calendar with alarm and watchdog timer Programmable 1-Hz square-wave output Adjustable frequency output Backup battery input 8-pin SOIC package Applications: The M41T81M6F is suitable for applications such as consumer electronics, automotive, industrial, and medical. It can be used in applications such as timekeeping, alarm, and watchdog timer. (For reference only)