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-4045NB:AAB

IC REAL TIME CLOCK/CALENDAR

3.63

Epson RX-4574LC:B PURE SN

IC REAL TIME CLOCK/CALENDAR

3.61

Epson RX-4035SA:AAB PURE SN

IC REAL TIME CLOCK/CALENDAR

3.62

Epson RX-8731LC:B

IC RTC CALENDAR I2C 12VSOJ

3.6

Maxim Integrated DS1344E-18+

IC RTC CLK/CALENDAR SPI 20-TSSOP

3.56

Epson RTC-4574NB:B ROHS

IC REAL TIME CLOCK/CALENDAR

3.57

Maxim Integrated DS1343E-18+

IC RTC CLK/CALENDAR SPI 20-TSSOP

3.56

Epson RX-8581JE:B I2C-BUS

IC REAL TIME CLOCK/CALENDAR

3.55