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
DS1673E-5+	Maxim Integrated	IC RTC SYSTEM CTRLR SER 20-TSSOP	0	$7.95	RFQ
CDP68HC68T1M2Z96	Renesas Electronics America Inc.	IC RTC CLK/CALENDAR SPI 16-SOIC	0	$7.95	RFQ
BQ4802YDW	Texas Instruments	IC RTC CLK/CALENDAR PAR 28-SOIC	0	$7.69	RFQ
RTC-7301SF:B ROHS	Epson	IC REAL TIME CLOCK/CALENDAR	0	$6.85	RFQ
RX-8801SA: UB PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$6.56	RFQ
DS1685QN-3+	Maxim Integrated	IC RTC CLK/CALENDAR PAR 28-PLCC	0	$6.52	RFQ
RTC-72423B: PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$6.47	RFQ
RTC-72423A: PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$6.47	RFQ
RTC-72421A: PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$6.31	RFQ
DS1685-5IND+	Maxim Integrated	IC RTC CLK/CALENDAR PAR 24-DIP	0	$6.30	RFQ