EPSON X1B000131000112, Real Time Clock Serial-SPI

RX-4803 high stability SMD real time clock modules with a built in frequency adjusted 32.768 kHz crystal unit and DTCXO. These RX-4803 real time clock modules have a 1/100s resolution time register, a 4-wire serial interface, an interface voltage range of 1.6V to 5.5V, a temperature compensated voltage range of 2.2V to 5.5V, a clock supply voltage range of 1.6V to 5.5V and a selectable clock output of 32.768 kHz, 1024 Hz, 1 Hz. The functions of these RX-4803 real time clock modules include calendar, clock counter and, in addition, other functions such as alarm, fixed-cycle timer and time update.