M41T81 Overview
Key Specifications
Package: SOP
Mount Type: Surface Mount
Pins: 8
Operating Voltage: 3 V
Description
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.
Key Features
- For all new designs use M41T81S
- Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century
- 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
