The MCP79410-I/MS is a general purpose I²C™ compatible Real-Time Clock/Calendar (RTCC) is highly integrated with non-volatile memory. This features a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. Using a 32.768kHz crystal or other clock source, time is tracked in either a 12 or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multi-function open drain output can be programmed as an alarm out or as a clock out that supports 4 selectable frequencies. In addition, non-volatile memory is included along with an unique ID in a locked section of EEPROM that can be unlocked and programmed by the end user.
● Leap year compensated to 2399
● On-chip digital trimming/calibration - 1PPM resolution, ±129PPM range
● Dual programmable alarms
● Versatile output pin - Clock output with selectable frequency
● Power-fail time-stamp - time logged on switchover to and from battery backup
● 2-wire serial interface
● 64-byte battery-backed SRAM
● 1kb EEPROM Memory
● 64-bit protected EEPROM area - robust write unlock sequence
● Low typical timekeeping current
● Automatic switchover to battery backup
● Programmable charge current
● Programmable safety charge timers
● Preconditioning of deeply depleted cells
● Automatic end-of-charge control
● Charge status output for direct LED drive
● Automatic power-down when input power removed
●ESD sensitive device, take proper precaution while handling the device.
