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
CDP68HC68T1MZ96	Renesas Electronics America Inc.	IC RTC CLK/CALENDAR SPI 20-SOIC	0	$6.32	RFQ
DS1501YZN+T&R	Maxim Integrated	IC RTC CLK/CALENDAR PAR 28-SOIC	0	$6.30	RFQ
RX-8801SA: UA PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$6.21	RFQ
RX-8803LC:UA PURE SN	Epson	IC RTC CALENDAR I2C 12VSOJ	0	$6.09	RFQ
RX-4803LC:UCB PURE SN	Epson	IC RTC CALENDAR SPI 12VSOJ	0	$5.98	RFQ
RX-4803LC:UA PURE SN	Epson	IC RTC CALENDAR SPI 12VSOJ	0	$6.09	RFQ
RTC-72423B:ROHS	Epson	IC RTC CLK/CALENDAR PAR 24-SOP	0	$5.95	RFQ
RTC-72423A:3:ROHS	Epson	IC RTC CLK/CALENDAR PAR 24-SOP	0	$5.95	RFQ
RTC-72421B: PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$5.90	RFQ
PT7C4337ACSE	Diodes Incorporated	IC RTC CLK/CALENDAR I2C	0	$5.79	RFQ