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
DS12R885S-33+T&R Maxim Integrated IC RTC CLK/CALENDAR PAR 24-SOIC 0 $2.04
RX-8035SA:AC0 PURE SN Epson IC RTC RECORDER I2C SER 14SOP 0 $2.03
RX-8025SA:AA0:PURE SN Epson IC RTC CLK/CALENDAR I2C 14-SOP 0 $1.97
RX-8025SA:AC0 Epson IC RTC CLK/CALENDAR I2C 14-SOP 0 $1.97
RTC-4574SA:B0:PURE SN Epson IC RTC CLK/CALENDAR SPI 14-SOP 0 $1.97
RX-8025SA:AA0:ROHS Epson IC RTC CLK/CALENDAR I2C 14-SOP 0 $1.97
1339AC-31SRGI8 IDT, Integrated Device Technology Inc IC RTC CLK/CALENDAR I2C 16-SOIC 0 $1.96
1339AC-2SRGI8 IDT, Integrated Device Technology Inc IC RTC CLK/CALENDAR I2C 16-SOIC 0 $1.96
RX6110SA:BB PURE SN Epson IC REAL TIME CLOCK/CALENDAR 0 $1.88
DS1339BU+T Maxim Integrated IC RTC CLK/CALENDAR I2C 8-UMAX 0 $1.81