Serial Access Real-time Clock With Alarms

The M41T62 M41T64 M41T65 Serial Access TIMEKEEPER is a low power Serial RTC with a built-in 32.768 kHz Oscillator (external crystal controlled). Eight Registers (see Table 3 on page 19) are used for the Clock calendar function and are configured in binary coded decimal (BCD) format. An additional 8 Registers provide status/control of Alarm, 32KHz output, Calibration, and Watchdog functions. Addresses and data are transferred serially via a two line, bi-directional 2 I C Interface The built-in address Register is incremented automatically after each WRITE or READ data byte. By STMicroelectronics