Analog Devices MAX31341C Real-Time Clock is a low-current time-keeping device that provides nanoamperes time-keeping current by extending battery life. The MAX31341C supports 6pF high-ESR crystals that broaden the pool of usable crystals for the devices. This device is accessed through an I2C serial interface. The MAX31341C real-time clock features one digital Schmitt trigger input and one programmable threshold analog input. This clock generates an interrupt output on a falling or rising edge of the digital input (D1), or when the analog input (AIN) voltage crosses a programmed threshold in either direction.
Additionally, this real-time clock features two time-of-day alarms, interrupt outputs, a programmable square-wave output, a serial bus timeout mechanism, and a 64-byte RAM for user data storage. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The Analog Devices MAX31341C Real-Time Clock operates in a 24-hour format and includes an input for synchronization. Typical applications include medical, wearables, Point-of-Sale (POS), telematics, portable instruments, and audio.