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.

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Epson RX-8035SA:AC PURE SN

IC RTC RECORDER I2C SER 14SOP

3.26

Epson RX-8803SA:UB PURE SN

IC RTC CALENDAR I2C 14SOP

3.53

Epson RX-4803SA:UB PURE SN

IC RTC CALENDAR SPI 14SOP

3.53

IDT, Integrated Device Technology Inc 1339C-31SRI

IC RTC CLK/CALENDAR I2C 16-SOIC

3.53

Texas Instruments BQ4845S-A4TR

IC RTC CLK/CALENDAR PAR 28-SOIC

3.86

Epson RX-8035LC:AA PURE SN

IC RTC RECORDER I2C SER 12VSOJ

3.85

Diodes Incorporated PT7C4337ACSEX

IC RTC CAL I2C/2-WIRE SER 16SOIC

3.81

Epson RTC-72423A0:PURE SN

IC RTC CLK/CALENDAR PAR 24-SOP

4.72