M41T00 - serial real time clock

STMicroelectronics

Datasheet Details

The M41T00 is a low power serial real time clock with a built-in 32.768 kHz oscillator (external crystal controlled).

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

M41T00.

For new designs use M41T00S.
Counters for seconds, minutes, hours, day, month, years, 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 (100 kHz protocol).
Ultra low battery supply current of 0.8 µA (typ at 3 V).
2.0 to 5.5 V clock operating voltage.
Automatic switchover and deselect circuitry (for 3 V applicati.

Part Number	Description	Manufacturer
M41T00AUD	Serial real-time clock	STMicroelectronics
M41T00CAP	Serial access real-time clock	STMicroelectronics
M41T00S	Serial real-time clock	STMicroelectronics
M41T00SC64	Real-Time Clock 64-Kbit EEPROM	STMicroelectronics

Part Number	Description
M41T0	Serial real-time clock
M41T256Y	256 Kbit 32K x8 SERIAL RTC
M41T56	512 bit 64b x8 Serial Access TIMEKEEPER SRAM
M41T60	Serial Access Real-Time Clock
M41T62	Low-power serial real-time clocks
M41T64	Low-power serial real-time clocks
M41T65	Low-power serial real-time clocks
M41T80	SERIAL ACCESS RTC WITH ALARMS
M41T81	Serial access real-time clock
M41T82	Serial I2C bus real-time clock