PCF2127AT/2Y, Календарь, часы, формат (ГГ:ММ:НЕДЕЛЯ:ДД …The PCF2127AT/2Y is an accurate Real Time Clock with an integrated temperature compensated crystal (Xtal) oscillator (TCXO) and a 32.768kHz quartz crystal optimized for very high accuracy and very low power consumption. This has 512bytes of general-purpose static RAM, a selectable I?C-bus or SPI-bus, a backup battery switch-over circuit, a programmable watchdog function and a timestamp function., Timestamp function with interrupt capability, 3 Line SPI-bus with separate data input and output, Battery backup input pin and switch-over circuitry, Extra power fail detection function with input and output pins, Oscillator stop detection function, Open-drain interrupt output, Programmable countdown timer with interrupt
