ECS-RTC-3225-5699C3 is a 3.2mm by 2.5mm small form factor real time clock with I²C bus interface and an embedded 32.768kHz TCXO. The precision temperature sensor and temperature compensated circuit ensure clock accuracy of < ±3ppm at -40ºC to +85ºC even in sleep mode or under battery operations. The RTC offers low current consumption of just 1µA. The module is programmable using a series of registers. The RTC supports specialized calendar and timer functions that are ideal for battery powered, portable, and remote electronic devices. The real time clock module offers programmable output frequencies of 32.768kHz, 1,024Hz, or 1Hz and enabled/disabled single-ended TCXO compensated HCMOS output for peripheral devices.