25LC128
RX-4801 (2)RX-480 (3)RX-4 (17)

Epson

RX-4801SA:UB3 PURE SN

IC RTC CLK/CALENDAR SPI 14-SOP
Epson

RX-4801JE:UB

Real Time Clock (RTC) IC Clock/Calendar 128b (16 x 8) SPI 20-LSSOJ (0.213", 5.40mm Width)

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