M41T82/M41T83 is a ultra-low power, low cost, programmable real-time clock (RTC) with battery switchover function, support I2C bus, widely used in consumer electronics, industrial, medical, etc.
The M41T82 and M41T83 are low-power serial I2C real-time clocks (RTCs) featuring a built-in 32.768 kHz oscillator. They include a non-volatile time-of-day clock/calendar, two alarm interrupts, a watchdog timer, and an 8-bit counter. The devices automatically switch to a battery supply during power failures to maintain timekeeping.
| Battery supply current | 365 nA |
|---|---|
| Clock operating voltage | 2.0 V to 5.5 V |
| Operating temperature | -40 °C to 85 °C |
| Serial interface protocol | I2C bus (400 kHz) |
| User SRAM | 7 bytes |
The battery supply current is 365 nA.
The clock operates between 2.0 V and 5.5 V.
Yes, it has automatic switchover and reset output circuitry.