The M41T00S is a serial real-time clock with 2.0 to 5.5 V clock operating voltage, counters for seconds, minutes, hours, day, date, month, year, and century, software clock calibration, automatic switchover and deselect circuitry, low operating current of 300 µA, oscillator stop detection, battery or SuperCap™ backup, -40 to 85 °C operating temperature and ultra-low battery supply current of 0.6 µA.
The M41T00S is a low-power serial real-time clock (RTC) manufactured by STMicroelectronics. It features a built-in 32.768 KHz oscillator controlled by an external crystal and includes 8 bytes of SRAM configured in binary coded decimal (BCD) format for clock and calendar functions. The device supports a two-line, bidirectional I2C interface and includes automatic switchover circuitry to switch from the main supply to a battery or SuperCap backup upon power failure.
| Clock operating voltage | 2.0 to 5.5 V |
|---|---|
| Operating temperature | -40 to 85 °C |
| Ultra-low battery supply current | 0.6 pA |
Yes, the device automatically makes corrections for 28, 29, 30, and 31 day months, with leap year validity until the year 2100.
The device operates with a clock supply voltage between 2.0 V and 5.5 V.
The low operating current is specified as 300 µA.