Real Time Clocks | Farnell Sweden

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

DS1302Z+T&R	2515451RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ kr30.770 250+ kr28.050 500+ kr27.080	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	NSOIC	8Pins	Serial	0°C	70°C	-	-
DS1340Z-33+T&R	2515466RL 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) Re-Reel Packaging Options	100+ kr34.360 250+ kr30.880 500+ kr30.010	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1306N+	2515416 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 2 V to 5.5 V DIP-16	Each	1+ kr121.240 10+ kr84.490 25+ kr73.180 100+ kr63.070 250+ kr60.890 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	DIP	16Pins	SPI	0°C	70°C	-	-
MCP79521-I/MS	2345962 Data Sheet RoHS Date/Lot Code	MICROCHIP RTC Day/Date/Month/Year HH:MM:SS:hh RTC SPI 1.8 V to 3.6 V Supply MSOP-10	Each	1+ kr15.220 25+ kr14.680 100+ kr14.140 250+ kr13.810	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
DS1302N+	2515367 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V DIP-8	Each	1+ kr62.090 10+ kr47.520 50+ kr41.430 100+ kr39.150 250+ kr36.650 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	DIP	8Pins	Serial	-40°C	85°C	-	-
PCF85063ATL/1,118	2427481RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec Binary I2C 900 mV to 5.5 V HXSON-10	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ kr4.710 500+ kr4.200 1000+ kr4.020 2500+ kr3.720 5000+ kr3.640	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	HXSON	10Pins	I2C	-40°C	85°C	-	-
DS1746-70+	2515526 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Timekeeper NVSRAM Bytewide 4.5 V to 5.5 V EDIP-32	Each	1+ kr527.600 11+ kr411.040 33+ kr394.070 110+ kr383.960	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	4.5V	5.5V	EDIP	32Pins	Bytewide	0°C	70°C	-	-
X1B0002320001	2445808 Data Sheet RoHS Date/Lot Code	EPSON RTC IC Calendar 1.6 V to 5.5 V SOP 14Pins I2C SPI	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr63.990 10+ kr46.940 25+ kr44.570 50+ kr42.200 100+ kr37.230 More Pricing...	Min: 1 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	14Pins	I2C, SPI	-40°C	85°C	-	-
DS1251Y-70+	2515443 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+ kr528.040 10+ kr487.590 30+ kr468.560 100+ kr448.010	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	4.5V	5.5V	EDIP	32Pins	Bytewide	0°C	70°C	-	-
PCF8563TS/4,118	2400454RL Data Sheet RoHS Date/Lot Code	NXP Real Time Clock/Calendar IC Alarm I2C HH:MM:SS Day; Date; Month; Year 1 V to 5.5 V TSSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ kr11.870 250+ kr11.120 500+ kr10.720 1000+ kr10.120 2500+ kr9.870	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1V	5.5V	TSSOP	8Pins	I2C	-40°C	85°C	-	-
DS1394U-33+T&R	2515478 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS:hh Alarm RTC SPI 2.97 V to 5.5 V Supply µSOP-10	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr55.200 10+ kr42.200 25+ kr37.280 100+ kr33.340 250+ kr30.280 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	Alarm RTC	2.97V	5.5V	µSOP	10Pins	SPI	-40°C	85°C	-	-
DS1302SN+	2515359 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V WSOIC-8	Each	1+ kr52.520 10+ kr40.340 88+ kr32.190 176+ kr31.530 264+ kr30.880 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	-40°C	85°C	-	-
PCF85063TP/1Z	2427483RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec Binary I2C 900 mV to 5.5 V HWSON-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ kr5.530 500+ kr5.000 1000+ kr4.620 2500+ kr4.430 5000+ kr4.230	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	HWSON	8Pins	I2C	-40°C	85°C	-	-
DS1338U-33+	2515376 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	Each	1+ kr62.090 10+ kr47.520 50+ kr41.320 100+ kr38.600 250+ kr36.320 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
PCF8523T/1,118	2400452RL Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 1.2 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ kr7.920 250+ kr7.440 500+ kr7.140 1000+ kr6.870 2500+ kr6.460	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.2V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS1904L-F5#	2765024 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC iButton Date Time Format (Binary/Binary) Serial 2.8 V to 6 V supply F5 MicroCan	Each	1+ kr143.430 10+ kr125.380 25+ kr116.130 100+ kr101.780 300+ kr93.620 More Pricing...	Min: 1 / Mult: 1	Binary	Binary	RTC	2.8V	6V	Module	2Pins	-	-40°C	85°C	-	-
M41T11MH6F	2849894 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Clock/Calendar Day/Date/Month/Year/Century HH:MM:SS Serial 2V to 5.5V Supply SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ kr62.420 10+ kr47.880 25+ kr44.270 50+ kr42.310 100+ kr40.230 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	Calendar, Clock	2V	5.5V	SOIC	28Pins	Serial	-40°C	85°C	-	-
DS1307Z+T&R	2798723 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 4.5 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr50.500 10+ kr38.480 25+ kr35.310 100+ kr32.140 250+ kr30.500 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	0°C	70°C	-	-
M41ST87WMX6TR	2806826 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 3V to 3.6V Supply SOIC-28	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr95.650 10+ kr74.550 25+ kr69.200 50+ kr66.250 100+ kr63.290 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	3V	3.6V	SOIC	28Pins	I2C	-40°C	85°C	-	-
DS3231SN#T&R	2798760RL 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) Re-Reel Packaging Options	10+ kr109.530 25+ kr102.100 100+ kr91.390 250+ kr90.080 500+ kr87.670	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.3V	5.5V	SOIC	16Pins	I2C	-40°C	85°C	-	-
MCP7940NT-I/SN	2857529 Data Sheet RoHS Date/Lot Code	MICROCHIP RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 1.8V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr8.920 25+ kr8.300 100+ kr8.240 3300+ kr8.180	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF85263ATT/AJ	2775936 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 900 mV to 5.5 V supply TSSOP-8	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr11.590 10+ kr8.530 50+ kr7.840 100+ kr7.000 250+ kr6.580 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	TSSOP	8Pins	I2C	-40°C	85°C	-	-
PCF85363ATL/AX	2890044 Data Sheet RoHS Date/Lot Code	NXP Real Time Clock/Calendar IC I2C 900 mV to 5.5 V HH:MM:SS: 12Hr / 24Hr YY-MM-DD-DW DFN2626-10	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr14.350 10+ kr10.400 50+ kr9.420 100+ kr8.360 250+ kr7.850 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-DW	HH:MM:SS: 12Hr / 24Hr	Calendar, Clock	900mV	5.5V	DFN2626	10Pins	I2C	-40°C	85°C	-	-
PCF85363ATT/AJ	2775939 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 900 mV to 5.5 V supply TSSOP-8	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr14.100 10+ kr10.180 50+ kr9.230 100+ kr8.170 250+ kr7.660 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	TSSOP	8Pins	I2C	-40°C	85°C	-	-
M41ST85WMX6TR	2806825 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 3.6V Supply SOIC-28	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ kr82.160 10+ kr63.570 25+ kr58.890 50+ kr56.330 100+ kr53.770 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2.7V	3.6V	SOIC	28Pins	I2C	-40°C	85°C	-	-