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-8803SA:UC3 PURE SN Epson IC RTC CALENDAR I2C 14SOP 0 $2.90
ISL12024IVZ Renesas Electronics America Inc. IC RTC CLK/CALENDAR I2C 8-TSSOP 0 $2.81
RX-8571SA:B PURE SN Epson IC REAL TIME CLOCK/CALENDAR 0 $2.77
RX-4571SA:B PURE SN Epson IC REAL TIME CLOCK/CALENDAR 0 $2.77
RX-4571LC:B PURE SN Epson IC REAL TIME CLOCK/CALENDAR 0 $2.75
RX-8035SA:AA3:PURE SN Epson IC RTC EVENT REC I2C 14-SOP 0 $2.74
1339AC-31SRGI IDT, Integrated Device Technology Inc IC RTC CLK/CALENDAR I2C 16-SOIC 0 $2.73
1339AC-2SRGI IDT, Integrated Device Technology Inc IC RTC CLK/CALENDAR I2C 16-SOIC 0 $2.73
RX-8035SA:AC3 PURE SN Epson IC RTC RECORDER I2C SER 14SOP 0 $2.68
RTC-4543SA:B:PURE SN Epson IC RTC CALENDAR 3-WIRE SER 14SOP 0 $2.68