ECS Inc. International’s newest real-time clock is the small form factor ECS-RTC-SOP8-5101A. The 6.0 mm x 4.9 mm x 1.6 mm real-time clock has a built-in crystal oscillator with an I²C bus interface that requires an external 32.768 kHz tuning fork crystal. The tuning fork will require a frequency tolerance of ±20 ppm and a load capacitance of 6pF. This real-time clock component offers a low current consumption of just 0.8µA and operates over a 1.2 V to 5.5 V power supply voltage over the standard industrial operating temperature of -40ºC to +85ºC. The module is programmable using a series of registers supporting specialized calendar and timer functions that are ideal for battery powered, portable and remote electronic devices.