EPSON X1B000202000312, Real Time Clock Serial-SPI, 12-Pin VSOJ

RX-4035 high stability SMD real time clock modules with a built in frequency adjusted 32.768 kHz crystal unit, time stamp and auto power switching function. These RX-4035 real time clock modules have an SPI-Bus (1MHz) interface, an operating voltage range of 2.4V to 5.5V, a timekeeping voltage range of 1.0V to 5.5V and a low backup current of 350 nA (SA), 400 nA (LC), 3V (typ). In addition the RX-4035 RTC has an event detection and stamp function with a one-shot full timestamp and interrupt and dual event detection ports with a de-bounce circuit for each terminal. These RX-4035 RTCs are engineered to contribute significantly to lowering power consumption in electrical devices, while ensuring highly accurate time information.