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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M41T00SM6F	2463681 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC IC Date Time Format (Date/Month/Year ss:mm:hh) I2C 2.7 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ Kč71.980 10+ Kč54.173 25+ Kč49.658 50+ Kč47.150 100+ Kč44.642 More Pricing...	Min: 1 / Mult: 1	DD:MM:YYYY	ss:mm:hh	RTC	2.7V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
M41T00SM6F	2463681RL Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC IC Date Time Format (Date/Month/Year ss:mm:hh) I2C 2.7 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ Kč44.642 250+ Kč42.385 500+ Kč41.131 1000+ Kč39.626	Min: 100 / Mult: 1	DD:MM:YYYY	ss:mm:hh	RTC	2.7V	5.5V	SOIC	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	1+ Kč22.371 10+ Kč17.832 50+ Kč16.854 100+ Kč15.800 250+ Kč15.399 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	-	-
DS1392U-33+	2515397 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) SPI 2.97 V to 5.5 V µSOP-10	Each	1+ Kč110.352 10+ Kč84.520 50+ Kč74.237	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	-	-
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	-	-
PCF85363ATL/AX	2890044RL 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) Re-Reel Packaging Options	100+ Kč15.800 250+ Kč15.399 500+ Kč15.073 1000+ Kč14.772 2500+ Kč14.471	Min: 100 / Mult: 1	YY-MM-DD-DW	HH:MM:SS: 12Hr / 24Hr	Calendar, Clock	900mV	5.5V	DFN2626	10Pins	I2C	-40°C	85°C	-	-
AB-RTCMC-32.768KHZ-AIGZ-S7-T	3820847 Data Sheet RoHS Date/Lot Code	ABRACON Real-Time Clock/Calendar IC I2C HH:MM:SS:hh YY-MM-DD-dd -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel Packaging Options	1000+ Kč61.948	Min: 1000 / Mult: 1000	YY-MM-DD-dd	HH:MM:SS:hh	RTC	1.3V	4.4V	CLCC	8Pins	I2C	-40°C	85°C	-	-
DP8573AV/NOPB	2492605 RoHS	TEXAS INSTRUMENTS RTC IC Date Time Format (BCD 12Hr / 24Hr) Parallel 4.5 V to 5.5 V LCC-28	Each	1+ Kč366.920 10+ Kč319.268 25+ Kč313.751 50+ Kč297.198 100+ Kč291.179	Min: 1 / Mult: 1	BCD	12Hr / 24Hr	RTC	4.5V	5.5V	LCC	28Pins	Parallel	-40°C	85°C	-	-
MAX31342EWA+	3023225 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 1.6V to 3.6V Supply WLP-8	Each (Supplied on Cut Tape) Cut Tape	1+ Kč27.839 10+ Kč22.697 30+ Kč21.468 100+ Kč20.214 250+ Kč18.960	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.6V	3.6V	WLP	8Pins	I2C	-40°C	85°C	-	-
DS1673S-3+	2798731 Data Sheet RoHS	ANALOG DEVICES RTC IC Format (Day/Date/Month/Year hh:mm:ss) 3 Wire Serial 2.7 V to 3.3 V supply WSOIC-20	Each	1+ Kč244.530	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.7V	3.3V	WSOIC	20Pins	3 Wire, Serial	0°C	70°C	-	-
MAX31342EWA+	3023225RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 1.6V to 3.6V Supply WLP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ Kč20.214 250+ Kč18.960	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	1.6V	3.6V	WLP	8Pins	I2C	-40°C	85°C	-	-
M48T58Y-70PC1	9755772 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.5 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+ Kč891.594 5+ Kč804.065 10+ Kč716.536 25+ Kč670.138 50+ Kč656.845	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.5V	5.5V	DIP	28Pins	Parallel	0°C	70°C	-	-
M48T02-150PC1	9756388 Data Sheet RoHS	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.75 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+ Kč666.376 10+ Kč526.429 25+ Kč503.857 50+ Kč479.780 100+ Kč455.453	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.75V	5.5V	DIP	24Pins	Parallel	0°C	70°C	-	-
M48T35Y-70PC1	9756574 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC TIMEKEEPER® RAM 32Kbx8 Non-Volatile Static RAM Parallel 4.5V to 5.5V DIP-28	Each Hazardous Item: There maybe additional transit time on this item. Delivery of other items on your order will be unaffected.	1+ Kč1,206.348 5+ Kč1,102.517 10+ Kč998.686 25+ Kč937.490	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.5V	5.5V	DIP	28Pins	Parallel	0°C	70°C	-	-
M48T08-100PC1	9756396 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+ Kč902.128 5+ Kč813.595 10+ Kč724.812 25+ Kč677.912 50+ Kč664.369	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.75V	5.5V	DIP	28Pins	Parallel	0°C	70°C	-	-
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
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	-	-
M48T18-100PC1	9756558 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.5 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+ Kč1,115.057 5+ Kč1,015.489 10+ Kč915.922 25+ Kč858.990 50+ Kč841.936	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.5V	5.5V	DIP	28Pins	Parallel	0°C	70°C	-	-
M48T18-150PC1	1467734 Data Sheet RoHS	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.5 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+ Kč1,203.088 5+ Kč1,099.507 10+ Kč995.676 25+ Kč934.982	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.5V	5.5V	DIP	28Pins	Parallel	0°C	70°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
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	-	-
MCP79410-I/SN	1823155 Data Sheet RoHS Date/Lot Code	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
M48T02-70PC1	9755764 Data Sheet RoHS	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.75 V to 5.5 V DIP-24	Each	1+ Kč712.021 5+ Kč637.032 10+ Kč561.792 25+ Kč537.715 50+ Kč526.931	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.75V	5.5V	DIP	24Pins	Parallel	0°C	70°C	-	-
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