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
1338AC-18SRGI	IDT, Integrated Device Technology Inc	IC RTC CLK/CALENDAR I2C 16-SOIC	0	$1.80	RFQ
M41T00AUDD1F	STMicroelectronics	IC RTC CLK/CALENDAR I2C 16-DFN	0	$0.00	RFQ
DS1339U-2+T&R	Maxim Integrated	IC RTC CLK/CALENDAR I2C 8-USOP	0	$1.77	RFQ
DS1308U-3+T	Maxim Integrated	IC RTC CLK/CALENDAR I2C 8-UMAX	0	$1.74	RFQ
RA-4574SA:B0 PURE SN	Epson	IC REAL TIME CLOCK/CALENDAR	0	$1.74	RFQ
RX-8571SA:B0 PURE SN	Epson	IC RTC CLK/CALENDAR I2C 14-SOP	0	$1.72	RFQ
DS1339U-3+T&R	Maxim Integrated	IC RTC CLK/CALENDAR I2C 8-USOP	0	$1.70	RFQ
DS1308U-18+T	Maxim Integrated	IC RTC CLK/CALENDAR I2C 8-UMAX	0	$1.68	RFQ
ISL12026AIVZ-T	Renesas Electronics America Inc.	IC RTC CLK/CALENDAR I2C 8-TSSOP	0	$1.68	RFQ
ISL12026AIBZ-T	Renesas Electronics America Inc.	IC RTC CLK/CALENDAR I2C 8-SOIC	0	$1.68	RFQ