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

ISL12057IUZ-T	2983744 Data Sheet RoHS Date/Lot Code	RENESAS RTC Alarm Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 1.4V to 3.6V Supply MSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 36.790 10+ kr 28.050 25+ kr 24.140 50+ kr 21.840 100+ kr 19.540 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.4V	3.6V	MSOP	8Pins	I2C	-40°C	85°C	-	-
DS1307ZN+T&R	2798724 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC I2C SERIAL 5.5V SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 58.400 10+ kr 44.600 25+ kr 41.040 100+ kr 36.560 250+ kr 33.680 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS3234SN#T&R	2798763 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 2 V to 5.5 V supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ kr 125.880 10+ kr 105.760 25+ kr 94.270 100+ kr 85.530 250+ kr 82.540 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	SOIC	20Pins	SPI	-40°C	85°C	-	-
PCF8563T/F4,118	2841031 Data Sheet RoHS	NXP RTC Date Time Format (DD:MM:YY HH:MM:SS Century Flag) 400 kbit/s I2C 1.8V to 5.5V SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 18.050 10+ kr 13.220 50+ kr 11.960 100+ kr 10.630 250+ kr 9.990 More Pricing...	Min: 1 / Mult: 1	DD:MM:YY	HH:MM:SS	Alarm RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS3231SN#T&R	2798760 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V supply SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ kr 132.430 10+ kr 114.500 25+ kr 105.760 100+ kr 95.870 250+ kr 93.460 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.3V	5.5V	SOIC	16Pins	I2C	-40°C	85°C	-	-
MCP79400-I/SN	2361117 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 10.400 25+ kr 9.640 100+ kr 9.090 250+ kr 8.910	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	-	-
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 10.740 25+ kr 9.960 100+ kr 9.530 250+ kr 9.440	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	-	-
RV-3049-C2-TB-QA-OPT.A	2358515 Data Sheet RoHS	MICRO CRYSTAL Real Time Clock IC Alarm SPI 24Hr YYYY:MM:DD:Hr:Min:Secs 1.3 V to 5.5 V SON-10	Each	1+ kr 119.790 10+ kr 94.150 25+ kr 85.300 50+ kr 79.320 100+ kr 75.180 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	24Hr	Alarm RTC	1.3V	5.5V	SON	10Pins	SPI	-40°C	125°C	-	-
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 14.370 25+ kr 13.340 100+ kr 12.650 250+ kr 12.420	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
MCP79412-I/SN	2103565 Data Sheet RoHS Date/Lot Code	MICROCHIP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec hh:mm:ss I2C 1.8 V to 5.5 V SOIC-8	Each	1+ kr 20.490 25+ kr 17.910 100+ kr 14.870 250+ kr 13.340	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	HH:MM:SS	Calendar, Clock	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	AEC-Q100
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	5+ kr 16.000 50+ kr 15.060 250+ kr 13.040 500+ kr 12.570 1500+ kr 12.090 More Pricing...	Min: 5 / Mult: 5	-	-	RTC	1.7V	3.6V	QFN	16Pins	I2C	-40°C	85°C	AB08XX	-
MCP79402-I/SN	2361119 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 11.390 25+ kr 10.520 100+ kr 9.970 250+ kr 9.770	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	-	-
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 11.170 25+ kr 10.390 100+ kr 9.970 250+ kr 9.770	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 13.450 25+ kr 12.420 100+ kr 11.730 3300+ kr 10.780	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	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 70.350 10+ kr 54.030 50+ kr 47.020 100+ kr 44.490 250+ kr 41.610 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	-	-
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 170.250 14+ kr 129.670 28+ kr 126.570 112+ kr 119.330 252+ kr 115.190 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 15.060 25+ kr 14.020 100+ kr 13.340 250+ kr 13.110	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 55.180 10+ kr 41.610 25+ kr 38.740 50+ kr 37.020 100+ kr 35.180 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	-	-
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 63.690 10+ kr 46.440 50+ kr 39.780 100+ kr 38.170 250+ kr 36.670 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	-	-
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 53.690 10+ kr 38.280 50+ kr 35.410 100+ kr 31.960 250+ kr 29.770 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 98.170 10+ kr 79.780 74+ kr 62.190 148+ kr 61.390 296+ kr 60.580 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	-	-
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 184.740 14+ kr 139.330 28+ kr 131.400 112+ kr 120.480 252+ kr 115.530 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	-	-
PCF2129T/2,518	2400451 Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C SPI 1.8V to 4.2V supply SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ kr 67.370 10+ kr 51.730 25+ kr 47.820 50+ kr 45.640 100+ kr 43.450 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	-	-
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	-	-