M41T00M6F Description

The M41T00M6F 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. Addresses and data are transferred serially via a two-line bidirectional bus. The built-in address register is incremented automatically after each WRITE or READ data byte. The M41T00M6F clock has a built-in power sense circuit that detects power failures and automatically switches to the battery supply during power failures. The energy needed to sustain the RAM and clock operations can be supplied from a small lithium coin cell. 

M41T00M6F Features

For new designs use M41T00S

Counters for seconds, minutes, hours, days, months, years, and centuries

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 application select M41T00S datasheet)

Software clock calibration to compensate for crystal deviation due to temperature

Automatic leap-year compensation

Operating temperature of -40 to 85 °C

M41T00M6F Applications

Industrial 

Building automation 

Enterprise systems 

Enterprise projectors 

Personal electronics 

Tablets