Real time clock module 4-bit REAL TIME CLOCK MODULE RTC-7301SF/DG Product number (please refer to page 2) Q42 7 3 0 1 8 x 0 0 0 2 0 0 Q42 7 3 0 1 1 x 0 0 0 2 0 0 • Built-in crystal oscillator 32.768...