Real Time Clocks

Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral.  They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.

Part Number Manufacturer Description Quantity Price Option
RX-4035SA:AAB PURE SN Epson IC REAL TIME CLOCK/CALENDAR 0 $3.62
RX-8731LC:B Epson IC RTC CALENDAR I2C 12VSOJ 0 $3.60
DS1344E-18+ Maxim Integrated IC RTC CLK/CALENDAR SPI 20-TSSOP 0 $3.56
RTC-4574NB:B ROHS Epson IC REAL TIME CLOCK/CALENDAR 0 $3.57
DS1343E-18+ Maxim Integrated IC RTC CLK/CALENDAR SPI 20-TSSOP 0 $3.56
RX-8581JE:B I2C-BUS Epson IC REAL TIME CLOCK/CALENDAR 0 $3.55
RTC-8564JE:BB ROHS Epson IC REAL TIME CLOCK/CALENDAR 0 $3.55
RTC-4574JE:B ROHS Epson IC REAL TIME CLOCK/CALENDAR 0 $3.55
RX-8803SA:UC PURE SN Epson IC RTC CALENDAR I2C 14SOP 0 $3.53
RX-4801SA:UB0 PURE SN Epson IC REAL TIME CLOCK/CALENDAR 0 $3.52