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

DS1302S+T&R	2515449 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 (Supplied on Cut Tape) Cut Tape	1+ kr 73.580 10+ kr 53.350 25+ kr 49.800 100+ kr 43.650 250+ kr 41.400 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	0°C	70°C	-	-
MCP7940M-I/SN	2098890 Data Sheet RoHS Date/Lot Code	MICROCHIP RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C 1.8 V to 5.5 V SOIC-8	Each	1+ kr 7.500 25+ kr 6.930 100+ kr 6.920 250+ kr 6.900	Min: 1 / Mult: 1	DD:MM:YYYY	HH:MM:SS	RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	AEC-Q100
M48T35Y-70MH1F	2849895 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 4.5V to 5.5V SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ kr 236.460 10+ kr 189.030 25+ kr 177.320 50+ kr 174.830 100+ kr 172.350	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C	-	-
M41T94MH6F	2806842 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) SPI 2.7V to 5.5V Supply SOH-28	Each (Supplied on Cut Tape) Cut Tape	1+ kr 126.220 10+ kr 98.890 25+ kr 92.030 50+ kr 88.240 100+ kr 84.460 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2.7V	5.5V	SOH	28Pins	SPI	-40°C	85°C	-	-
DS1305E+	2729118 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Format (Day/Date/Month/Year/12Hr / 24Hr) 3 Wire Serial 2 V to 5.5 V supply TSSOP-20	Each	1+ kr 88.290 10+ kr 68.860 74+ kr 57.360 148+ kr 56.900 296+ kr 56.440 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	12Hr / 24Hr	RTC	2V	5.5V	TSSOP	20Pins	3 Wire, Serial	0°C	70°C	-	-
MCP7940N-E/SN	2920808 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC Calendar Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 1.8V to 5.5V Supply SOIC-8	Each	1+ kr 10.080 25+ kr 10.020 100+ kr 9.960 250+ kr 9.900	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTCC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	125°C	-	-
PCF2123TS/1,118	2775930 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) SPI 1.1 V to 5.5 V supply TSSOP-14	Each (Supplied on Cut Tape) Cut Tape	1+ kr 15.860 10+ kr 11.610 50+ kr 10.470 100+ kr 9.310 250+ kr 8.690 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.1V	5.5V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
M41T94MQ6F	2806843 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) SPI 2.7V to 5.5V Supply SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ kr 49.090 10+ kr 37.260 25+ kr 34.300 50+ kr 33.240 100+ kr 30.160 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2.7V	5.5V	SOIC	16Pins	SPI	-40°C	85°C	-	-
PCF85063ATT/AJ	2775937RL 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) Re-Reel Packaging Options	100+ kr 5.360 500+ kr 4.610 1000+ kr 4.390 2500+ kr 4.210 5000+ kr 4.130	Min: 100 / Mult: 5	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	TSSOP	8Pins	I2C	-40°C	85°C	-	-
PCF8593T/1,118	2775931 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 2.5 V to 6 V supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 40.240 10+ kr 30.350 25+ kr 27.930 50+ kr 26.560 100+ kr 25.060 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	2.5V	6V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF85063AT/AAZ	2890042 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 SOIC 8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 9.330 10+ kr 6.680 50+ kr 6.020 100+ kr 5.290 250+ kr 4.940 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-DW	HH:MM:SS: 12Hr / 24Hr	Calendar, Clock	900mV	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
M41T80M6F	2806830 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2V to 5.5V Supply SOIC-8	Each	1+ kr 28.740 10+ kr 21.650 25+ kr 20.110 50+ kr 18.450 100+ kr 16.920 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF85063ATT/AJ	2775937 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	1+ kr 9.210 10+ kr 6.540 100+ kr 5.360 500+ kr 4.610 1000+ kr 4.390 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	-	-
M41T93RQA6F	2806840 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) SPI 2.7V to 5.5V Supply QFN-16	Each (Supplied on Cut Tape) Cut Tape	1+ kr 92.860 10+ kr 81.270 25+ kr 67.310 50+ kr 60.330 100+ kr 55.710 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2.7V	5.5V	QFN	16Pins	SPI	-40°C	85°C	-	-
ISL1208IB8Z-TK	2983745 Data Sheet RoHS Date/Lot Code	RENESAS RTC Alarm Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 2.7V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 45.540 10+ kr 29.810 25+ kr 25.550 50+ kr 23.180 100+ kr 20.700 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.7V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS3231S#T&R	2798759 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 126.220 10+ kr 98.860 25+ kr 92.080 100+ kr 84.380 250+ kr 80.930 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.3V	5.5V	SOIC	16Pins	I2C	0°C	70°C	-	-
DS1339C-33#	2729119 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C 2.97 V to 5.5 V supply SOIC-16	Each	1+ kr 114.620 10+ kr 89.550 46+ kr 79.850 138+ kr 69.440 276+ kr 65.890 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	SOIC	16Pins	I2C	-40°C	85°C	-	-
M41T0M6F	2806827 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) I2C 2V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ kr 49.090 10+ kr 37.140 50+ kr 34.190 100+ kr 30.990 250+ kr 29.340 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	2V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF8563TS/5,118	2775932 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) Cut Tape	1+ kr 10.620 10+ kr 8.690 50+ kr 7.510 100+ kr 7.010 250+ kr 7.000 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1V	5.5V	TSSOP	8Pins	I2C	-40°C	85°C	-	-
M48T58Y-70MH1F	2849896 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 4.5V to 5.5V SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ kr 190.680 10+ kr 181.460 25+ kr 172.110 50+ kr 162.890 100+ kr 153.540	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C	-	-
PCF2127T/2Y	2775934 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-16	Each (Supplied on Cut Tape) Cut Tape	1+ kr 44.950 10+ kr 36.670 25+ kr 34.780 50+ kr 33.950 100+ kr 33.120 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	-	-
DS3234S#	3404558 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES REAL TIME CLOCK 2V TO 5.5V SOIC-20	Each	1+ kr 122.200 10+ kr 99.090 36+ kr 89.090 108+ kr 80.010 252+ kr 78.980 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	SOIC	20Pins	Serial, SPI	0°C	70°C	-	-
RV-3029-C2-TB-QA-OPT.B	2358509 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Year/Month/Date/Hr/Min/Sec 24Hr) I2C 1.3 V to 5.5 V SON-10	Each	1+ kr 101.970 10+ kr 80.080 25+ kr 72.630 50+ kr 67.540 100+ kr 64.350 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	24Hr	RTC	1.3V	5.5V	SON	10Pins	I2C	-40°C	125°C	-	-
RV-3029-C3-TA-QC-OPT.A	2358510 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Year/Month/Date/Hr/Min/Sec 24Hr) I2C 1.3 V to 5.5 V SON-10	Each	1+ kr 100.130 10+ kr 78.750 25+ kr 71.390 50+ kr 66.330 100+ kr 62.880 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	24Hr	RTC	1.3V	5.5V	SON	10Pins	I2C	-40°C	85°C	-	-
Q418564710001	1278029RL Data Sheet RoHS	EPSON RTC IC YYYY:MM:DD:Hr:Min:Secs 12Hr / 24Hr 1.8 V to 5.5 V VSOJ 20Pins I2C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ kr 77.770 25+ kr 73.850 50+ kr 69.820 100+ kr 61.760 250+ kr 53.820	Min: 10 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	12Hr / 24Hr	RTC	1.8V	5.5V	VSOJ	20Pins	I2C	-40°C	85°C	-	-