Real Time Clocks | Farnell Norway

Real-Time Clock products offer a diverse range of real-time clock (RTC) solutions for networking and embedded applications. The primary function of RTC is to keep time and calendar data.We offer Real Time Clock (RTC) functions including Alarm RTC, Binary Counter, Real Time Calendar Clock (RTCC), Elapsed Time Recorder and Real Time Event Recorder. Use of a hardware RTC allows microcontrollers like the Raspberry Pi to be used without internet access and still provide services that use time stamps. For example, the DS1307 is a commonly available I2C based RTC module – so using the DS1307’s I2C protocol, which is supported by the Raspberry Pi, real time clock support can easily and cost-effectively be added.Another popular RTC module, also with I2C support, is the DS3231. The DS3231 is a low-cost, extremely accurate I²C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when mains power to the device is interrupted. Accuracy is ±2ppm from 0°C to +40°C, and ±3.5ppm from -40°C to +85°C.Apart from I2C, other interface types include 2 wire, 3 wire, 4 wire, Motorola Serial Peripheral Interface (SPI), Bytewide, Parallel, Multiplexed, and Phantom Clock.Operating temperatures range from -40°C minimum to +125°C maximum. Products are available to the AEC-Q100 Automotive Qualification Standard.

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			Price For		Quantity

MCP79510-I/MS	2361124 Data Sheet RoHS Date/Lot Code	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr SPI 1.8 V to 3.6 V MSOP-10	Each	1+ kr 14.720 25+ kr 13.780 100+ kr 12.950 250+ kr 12.720	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	3.6V	MSOP	10Pins	SPI	-40°C	85°C	-	AEC-Q100
MCP79400-I/MS	2361121 Data Sheet RoHS Date/Lot Code	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr I2C 1.8 V to 5.5 V MSOP-8	Each	1+ kr 11.240 25+ kr 10.340 100+ kr 9.770 250+ kr 9.570	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	-
AB0805-T3	2302153 Data Sheet RoHS Date/Lot Code	ABRACON RTC IC RC/XTAL 1.7 V to 3.6 V QFN 16Pins I2C	Each Packaging Options	1+ kr 21.900 10+ kr 16.250 50+ kr 14.960 100+ kr 13.660 250+ kr 13.070 More Pricing...	Min: 1 / Mult: 1	-	-	RTC	1.7V	3.6V	QFN	16Pins	I2C	-40°C	85°C	AB08XX	-
MCP79401-I/SN	2361118 Data Sheet RoHS Date/Lot Code	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr I2C 1.8 V to 5.5 V SOIC-8	Each	1+ kr 11.690 25+ kr 10.790 100+ kr 10.220 250+ kr 10.020	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
MCP79412T-I/MNY	2361123 Data Sheet RoHS Date/Lot Code	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr I2C 1.8 V to 5.5 V TDFN-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 12.480 25+ kr 11.520 100+ kr 10.900 3300+ kr 10.690	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	-	AEC-Q100
DS1339U-33+	2518691 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Format (Day/Date/Month/Year/ss:mm:hh) I2C Serial 2.97 V to 5.5 V supply MSOP-8	Each	1+ kr 72.420 10+ kr 55.580 50+ kr 48.870 100+ kr 46.750 250+ kr 44.510 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	2.97V	5.5V	MSOP	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1338Z-18+	2515348 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 1.71 V to 5.5 V NSOIC-8	Each	1+ kr 67.590 10+ kr 47.810 25+ kr 45.690 100+ kr 43.450 300+ kr 41.100 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.71V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1340Z-33+T&R	2515466 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.97 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 60.560 10+ kr 46.370 25+ kr 42.700 100+ kr 38.800 250+ kr 36.910 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1302Z+	2519519 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Timekeeper IC Date Time Format (Day/Date/Month/Year hh:mm:ss) 3 Wire Serial 2 V to 5.5 V SOIC-8	Each	1+ kr 63.470 10+ kr 44.630 25+ kr 42.630 100+ kr 40.630 300+ kr 38.270 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Timekeeper	2V	5.5V	SOIC	8Pins	3 Wire, Serial	0°C	70°C	-	-
DS1388Z-3+	2515352 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS:hh) I2C 2.7V to 3.3V Supply NSOIC-8	Each	1+ kr 82.900 10+ kr 59.350 25+ kr 56.760 100+ kr 54.050 300+ kr 52.050 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	2.7V	3.3V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1338U-33+T&R	2515461 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 59.700 10+ kr 45.570 25+ kr 42.040 100+ kr 38.270 250+ kr 36.270 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
AB0805-T3	2467702 Data Sheet RoHS Date/Lot Code	ABRACON RTC IC Day:Date:Month:Year:Century HH:MM:SS:hh 1.5 V to 3.6 V QFN 16Pins I2C	Each (Supplied on Cut Tape) Cut Tape	5+ kr 21.900 50+ kr 14.960 100+ kr 13.660 500+ kr 12.480 1500+ kr 12.010	Min: 5 / Mult: 5	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN	16Pins	I2C	-40°C	85°C	-	-
DS12C887+	2515425 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Multiplexed 4.5 V to 5.5 V EDIP-24	Each	1+ kr 181.000 14+ kr 139.540 28+ kr 132.830 112+ kr 122.820 252+ kr 118.580 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C	-	-
MCP79520-I/MS	2345963 Data Sheet RoHS Date/Lot Code	MICROCHIP Real Time Clock AEC-Q100 MSOP-10 SPI 1.8 V to 3.6 V -40 °C to 85 °C	Each	1+ kr 15.070 25+ kr 14.370 100+ kr 13.780 250+ kr 13.540	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.8V	3.6V	MSOP	10Pins	SPI	-40°C	85°C	AEC-Q100	AEC-Q100
MCP79411-I/SN	1971844 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC I2C 1K EE 64B SRAM 8SOIC	Each	1+ kr 12.070 25+ kr 11.500 100+ kr 10.960 250+ kr 10.770	Min: 1 / Mult: 1	YY-MM-DD	HH:MM:SS	Alarm RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	AEC-Q100
PCF2127AT/2Y	2400449 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C SPI 1.8V to 4.2V supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ kr 57.840 10+ kr 43.530 25+ kr 40.570 50+ kr 38.680 100+ kr 36.790 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	20Pins	I2C, SPI	-40°C	85°C	-	-
DS1371U+	2515386 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Binary Counter IC Date Time Format (Binary) I2C 1.7 V to 5.5 V µSOP-8	Each	1+ kr 55.460 10+ kr 42.280 50+ kr 36.860 100+ kr 35.210 250+ kr 33.440 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	Binary Counter	1.7V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1305EN+	2518742 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year ss:mm:hh) 3 Wire Serial 2V to 5.5V Supply TSSOP-20	Each	1+ kr 105.510 10+ kr 82.200 74+ kr 68.420 148+ kr 67.360 296+ kr 66.300 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	3 Wire, Serial, SPI	-40°C	85°C	-	-
DS1339AU+	2515377 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 1.71 V to 5.5 V µSOP-8	Each	1+ kr 65.470 10+ kr 50.280 50+ kr 43.920 100+ kr 42.040 250+ kr 40.040 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.71V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1248Y-70+	2515444 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) Bytewide 4.5 V to 5.5 V EDIP-32	Each	1+ kr 567.200 10+ kr 523.860 30+ kr 503.520 100+ kr 481.440	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	EDIP	32Pins	Bytewide	0°C	70°C	-	-
DS12887A+	2519011 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Parallel 4.5 V to 5.5 V EDIP-24	Each	1+ kr 186.410 14+ kr 144.020 28+ kr 137.070 112+ kr 126.710 252+ kr 122.350 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	EDIP	24Pins	Parallel	0°C	70°C	-	-
PCA2129T/Q900/2,51	2427480 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec Binary I2C SPI 1.8 V to 4.2 V SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ kr 64.410 10+ kr 49.340 25+ kr 45.220 50+ kr 43.450 100+ kr 41.690 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	16Pins	I2C, SPI	-40°C	85°C	-	-
DS3231MZ+TRL	2515487 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 124.820 10+ kr 97.620 25+ kr 90.790 100+ kr 83.260 250+ kr 81.610 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1340Z-33+	2518702 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year ss:mm:hh) I2C 2.97 V to 5.5 V SOIC-8	Each	1+ kr 67.590 10+ kr 47.810 25+ kr 45.690 100+ kr 43.450 300+ kr 41.100 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	2.97V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF2129AT/2,518	2400450 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C SPI 1.8V to 4.2V supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ kr 57.020 10+ kr 44.140 25+ kr 40.810 50+ kr 39.090 100+ kr 37.250 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	20Pins	I2C, SPI	-40°C	85°C	-	-