M41T81 Datasheet Serial access real-time clock

Manufacturer: STMicroelectronics

Datasheet Details

Part number	M41T81
Manufacturer	STMicroelectronics
File Size	583.32 KB
Description	Serial access real-time clock
Datasheet	M41T81 Datasheet

The M41T81 is a low-power serial RTC with a built-in 32.768 kHz oscillator (external crystal controlled).

Eight bytes of the SRAM are used for the clock/calendar function and are configured in binary-coded decimal (BCD) format.

An additional 12 bytes of SRAM provide status/control of alarm, watchdog and square wave functions.

M41T81 Serial access real-time clock with alarm 8 1 SO8 8-pin.

For all new designs use M41T81S.
Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, 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 I2C bus (400 kHz protocol).
Ultra-low battery supply current of 0.6 ΜA (typ at 3 V).
2.0 to 5.5 V clock operating voltage.
Automatic switchover an.

Brand Logo	Part Number	Description	Manufacturer
	M41T81S	Serial access real-time clock	STMicroelectronics

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