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

MCP79520T-I/MS	3592268 Data Sheet RoHS Date/Lot Code	MICROCHIP Real Time Clock RTCC SPI 1.8 V to 3.6 V MSOP-10 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	2500+ Kč25.055	Min: 2500 / Mult: 2500	YY-MM-DD-dd	HH:MM:SS:hh	RTCC	1.8V	3.6V	MSOP	10Pins	SPI	-40°C	85°C	-	-
Q418564C20005	1278031 Data Sheet RoHS Date/Lot Code	EPSON RTC IC YYYY:MM:DD:Hr:Min:Secs 12Hr / 24Hr 1.8 V to 5.5 V VSOJ 12Pins I2C	Each (Supplied on Cut Tape) Cut Tape	1+ Kč202.396 10+ Kč134.930 25+ Kč117.625 50+ Kč107.844 100+ Kč97.561 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	12Hr / 24Hr	RTC	1.8V	5.5V	VSOJ	12Pins	I2C	-40°C	85°C	-	-
MCP79511-I/MS	2361125 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+ Kč33.356 25+ Kč30.598 100+ Kč29.093 250+ Kč28.591	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
MCP7940M-I/P	2098894 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 DIP-8	Each	1+ Kč17.706 25+ Kč16.277 100+ Kč16.076 250+ Kč15.851	Min: 1 / Mult: 1	DD:MM:YYYY	HH:MM:SS	RTC	1.8V	5.5V	DIP	8Pins	I2C	-40°C	85°C	-	AEC-Q100
MCP79410-I/SN	1823155 Data Sheet RoHS	MICROCHIP RTCC 12C 1K EE 64B SRAM 8SOIC	Each	1+ Kč25.331 25+ Kč23.776 100+ Kč23.701 250+ Kč23.625	Min: 1 / Mult: 1	DD:MM:YY	HH:MM:SS	RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	MCP79410 MCP79411 MCP79412	AEC-Q100
MCP79410-I/MS	1823153 Data Sheet RoHS Date/Lot Code	MICROCHIP RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C Serial 1.8 V to 5.5 V MSOP-8	Each	1+ Kč23.450 25+ Kč21.920 100+ Kč21.719 250+ Kč21.519	Min: 1 / Mult: 1	DD:MM:YY	HH:MM:SS	RTC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	AEC-Q100
MCP7940N-I/SN	2361122 Data Sheet RoHS Date/Lot Code	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr I2C 64 Byte SRAM 1.8 V to 5.5 V SOIC-8	Each	1+ Kč18.459 25+ Kč17.155 100+ Kč16.503 250+ Kč16.177	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	-	AEC-Q100
Q418564710001	1278029 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) Cut Tape	1+ Kč244.279 10+ Kč163.020 25+ Kč141.953 50+ Kč130.165 100+ Kč117.876 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	12Hr / 24Hr	RTC	1.8V	5.5V	VSOJ	20Pins	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+ Kč24.528 25+ Kč22.798 100+ Kč21.719 3300+ Kč20.641	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	-	-
PCF8563T/F4,118	2841031 Data Sheet RoHS Date/Lot Code	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+ Kč25.582 100+ Kč23.124 250+ Kč21.744 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	-	-
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	-	-
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
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
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	-	-
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+ Kč26.585 25+ Kč24.528 100+ Kč23.224 3300+ Kč22.773	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
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+ Kč32.102 25+ Kč30.347 100+ Kč29.093 250+ Kč28.591	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+ Kč25.832 25+ Kč24.654 100+ Kč23.926 250+ Kč23.876	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+ Kč123.143 10+ Kč92.796 25+ Kč86.526 50+ Kč82.513 100+ Kč78.250 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	-	-
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+ Kč137.188 10+ Kč105.085 25+ Kč96.307 50+ Kč92.545 100+ Kč88.783 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	-	-
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+ Kč126.905 10+ Kč98.564 25+ Kč90.790 50+ Kč87.028 100+ Kč83.266 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	-	-
DS1337+	2518743 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year ss:mm:hh) I2C Serial 1.8 V to 5.5 V DIP-8	Each	1+ Kč111.104 10+ Kč84.520 50+ Kč73.735 100+ Kč70.475 250+ Kč66.713 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	1.8V	5.5V	DIP	8Pins	I2C, Serial	-40°C	85°C	-	-
DS1337S+	2518709 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Format DD:DT:MM;YY ss:mm:hh Up to 2100 year 0.032768 MHz I2C 1.8V to 5.5V SO-8	Each	1+ Kč108.596 10+ Kč75.992 25+ Kč72.481 100+ Kč68.719 300+ Kč64.706 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	ss:mm:hh	RTC	1.8V	5.5V	SOIC	8Pins	I2C, Serial	-40°C	85°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+ Kč16.377 25+ Kč15.148 100+ Kč14.973 250+ Kč14.772	Min: 1 / Mult: 1	DD:MM:YYYY	HH:MM:SS	RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	AEC-Q100
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+ Kč22.020 25+ Kč21.769 100+ Kč21.494 250+ Kč21.243	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTCC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	125°C	-	-