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
1338-18DCGI IDT, Integrated Device Technology Inc IC RTC CLK/CALENDAR I2C 8-SOIC 0 $2.15
RX8900CE:UA0 Epson IC RTC CALENDAR I2C 10SMD 0 $2.14
RX8900SA:UBB PURE SN Epson IC RTC CALENDAR I2C 14SOP 0 $2.11
RX8900SA:UAB PURE SN Epson IC RTC CALENDAR I2C 14SOP 0 $2.11
RX8900SA:UCB PURE SN Epson IC RTC CALENDAR I2C 14SOP 0 $2.11
RX8900CE:UBB Epson IC RTC CALENDAR I2C 10SMD 0 $2.11
ISL12026AIVZ Renesas Electronics America Inc. IC RTC CLK/CALENDAR I2C 8-TSSOP 0 $2.09
RX-8035SA:AA0:PURE SN Epson IC RTC EVENT REC I2C 14-SOP 0 $2.07
DS12R885S-5+T&R Maxim Integrated IC RTC CLK/CALENDAR PAR 24-SOIC 0 $2.04
RX-8581SA:B0:PURE SN Epson IC RTC CLK/CALENDAR I2C 14-SON 0 $2.07