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
1339-2DCGI	IDT, Integrated Device Technology Inc	IC RTC CLK/CALENDAR I2C 8-SOIC	0	$1.94	RFQ
RX8900CE:UB3	Epson	IC RTC CALENDAR I2C 10SMD	0	$1.91	RFQ
DS1343D-3+T&R	Maxim Integrated	IC RTC CLK/CAL SPI 14TDFN	0	$0.00	RFQ
RX-4574LC:B0 PURE SN	Epson	IC RTC CLK/CALENDAR SER 12-VSOJ	0	$2.46	RFQ
RX-4581NB:B0 ROHS	Epson	IC RTC CLK/CALENDAR SPI 22-SON	0	$2.46	RFQ
RX-4803SA:UB3 PURE SN	Epson	IC RTC CALENDAR SPI 14SOP	0	$2.90	RFQ
RX-4035SA:B3 PURE SN	Epson	IC RTC CLK/CALENDAR SPI 14-SOP	0	$2.85	RFQ
DS1308U-3+	Maxim Integrated	IC RTC CLK/CALENDAR I2C 8-UMAX	0	$2.84	RFQ
RX-4045NB:AA3 PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$3.27	RFQ
ISL12022MIBZ-TR5421	Renesas Electronics America Inc.	IC RTC CLK/CALENDAR I2C 20-SOIC	0	$3.27	RFQ