ECS-RTC-SOP8-5101A is a real time clock with a built-in crystal oscillator and an I²C bus interface. It comes in a 6.0mm by 4.9mm package and requires an external 32.768kHz tuning fork crystal. The tuning fork will require a frequency tolerance of ±20ppm and a load capacitance of 6pF. The ECS-RTC-SOP8-5101A will operate over a temperature range of -40ºC to +85ºC. The RTC offers low current consumption of just 0.8µA. 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 HCMOS output for use with peripheral devices.