Real Time Clocks | Farnell Česká republika

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

PCF85063ATL/1,118	2427481 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) Cut Tape	1+ Kč18.559 10+ Kč13.317 100+ Kč10.509 500+ Kč9.355 1000+ Kč9.029 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	HXSON	10Pins	I2C	-40°C	85°C	-	-
DS3231M+TRL	2515485 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC Alarm I2C HH:MM:SS Day; Date; Month; Year 2.3 V to 5.5 V WSOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ Kč262.337 10+ Kč205.656 25+ Kč191.110 100+ Kč175.560 250+ Kč168.036 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
MCP79410T-I/MNY	2851649 Data Sheet RoHS Date/Lot Code	MICROCHIP RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) I2C 1.8V to 5.5V Supply TDFN-8	Each (Supplied on Cut Tape) Cut Tape	1+ Kč27.086 25+ Kč25.080 100+ Kč23.876 3300+ Kč22.672	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	TDFN	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+ Kč125.149 10+ Kč95.806 25+ Kč87.028 100+ Kč79.504 250+ Kč74.488 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+ Kč287.166 10+ Kč229.984 25+ Kč205.907 100+ Kč191.110 250+ Kč186.094 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	SOIC	20Pins	SPI	-40°C	85°C	-	-
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+ Kč86.777 10+ Kč60.694 25+ Kč52.166 50+ Kč47.652 100+ Kč43.138 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	-	-
DS1307Z+	2909754 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 4.5V to 5.5V Supply NSOIC-8	Each	1+ Kč132.673 10+ Kč93.799 25+ Kč89.285 100+ Kč84.520 300+ Kč78.751 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	-	-
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+ Kč39.125 10+ Kč28.591 50+ Kč26.083 100+ Kč23.099 250+ Kč21.719 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+ Kč317.764 10+ Kč249.797 25+ Kč233.244 100+ Kč214.434 250+ Kč205.656 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+ Kč22.748 25+ Kč21.067 100+ Kč19.863 250+ Kč19.462	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+ Kč23.951 25+ Kč22.020 100+ Kč20.841 250+ Kč20.415	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+ Kč261.334 10+ Kč205.405 25+ Kč186.094 50+ Kč173.052 100+ Kč164.023 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+ Kč31.350 25+ Kč29.344 100+ Kč27.588 250+ Kč27.086	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
M48T35-70PC1	1467735 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.75 V to 5.5 V DIP-28	Each Hazardous Item: There maybe additional transit time on this item. Delivery of other items on your order will be unaffected.	1+ Kč1,242.714 5+ Kč1,087.469 10+ Kč901.124 25+ Kč807.827	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.75V	5.5V	DIP	28Pins	Parallel	0°C	70°C	-	-
M48T12-150PC1	9756523 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.5 V to 5.5 V DIP-24	Each Hazardous Item: There maybe additional transit time on this item. Delivery of other items on your order will be unaffected.	1+ Kč1,119.822 5+ Kč979.876 10+ Kč811.840 25+ Kč727.822 50+ Kč671.893	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.5V	5.5V	DIP	24Pins	Parallel	0°C	70°C	-	-
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+ Kč43.890 25+ Kč38.372 100+ Kč31.852 250+ Kč28.591	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+ Kč33.858 50+ Kč31.852 250+ Kč27.588 500+ Kč26.836 1500+ Kč26.083 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+ Kč24.904 25+ Kč22.973 100+ Kč21.795 250+ Kč21.368	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+ Kč24.904 25+ Kč22.973 100+ Kč21.795 250+ Kč21.368	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+ Kč29.344 25+ Kč27.086 100+ Kč25.582 3300+ Kč23.525	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
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+ Kč371.435 14+ Kč282.902 28+ Kč276.131 112+ Kč260.330 252+ Kč251.302 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	-	-
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+ Kč153.740 10+ Kč118.127 50+ Kč102.326 100+ Kč95.555 250+ Kč88.282 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	-	-
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+ Kč125.902 10+ Kč96.307 25+ Kč88.783 100+ Kč79.754 250+ Kč74.738 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-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+ Kč138.943 10+ Kč101.323 50+ Kč86.777 100+ Kč83.266 250+ Kč80.005 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	-	-
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+ Kč214.183 10+ Kč174.055 74+ Kč135.683 148+ Kč133.927 296+ Kč132.172 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	-	-