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

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+ Kč34.861 10+ Kč25.331 50+ Kč22.923 100+ Kč20.390 250+ Kč19.036 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	-	-
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	1+ Kč148.975 10+ Kč99.317 25+ Kč86.526 50+ Kč79.253 100+ Kč71.729 More Pricing...	Min: 1 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	14Pins	I2C, SPI	-40°C	85°C	-	-
PCF2123TS/1,118	2775930RL 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) Re-Reel Packaging Options	100+ Kč20.390 250+ Kč19.036 500+ Kč18.283 1000+ Kč17.606 2500+ Kč17.255	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.1V	5.5V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
X1B0002320001	2445808RL 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	100+ Kč71.729 250+ Kč70.224 500+ Kč66.462 1000+ Kč65.208	Min: 100 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	14Pins	I2C, SPI	-40°C	85°C	-	-
MCP795W10-I/SL	2361120 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 SOIC-14	Each	1+ Kč41.884 25+ Kč39.125 100+ Kč37.871 250+ Kč36.617	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	3.6V	SOIC	14Pins	SPI	-40°C	85°C	-	AEC-Q100
PCF8523TS/1,118	2427485 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec Binary I2C 1.2 V to 5.5 V TSSOP-14	Each (Supplied on Cut Tape) Cut Tape	1+ Kč30.598 10+ Kč23.676 50+ Kč22.095 100+ Kč20.114 250+ Kč19.061 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.2V	5.5V	TSSOP	14Pins	I2C	-40°C	85°C	-	-
PCF8523TS/1,118	2427485RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec Binary I2C 1.2 V to 5.5 V TSSOP-14	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ Kč20.114 250+ Kč19.061 500+ Kč18.484 1000+ Kč17.681 2500+ Kč17.330	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.2V	5.5V	TSSOP	14Pins	I2C	-40°C	85°C	-	-
PCA21125T/Q900/1,1	2400445 Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) SPI 1.3 V to 5.5 V supply TSSOP-14	Each (Supplied on Cut Tape) Cut Tape	1+ Kč47.652 10+ Kč35.614 50+ Kč32.353 100+ Kč28.340 250+ Kč26.585 More Pricing...	Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.3V	5.5V	TSSOP	14Pins	SPI	-40°C	125°C	-	-
PCA21125T/Q900/1,1	2400445RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) SPI 1.3 V to 5.5 V supply TSSOP-14	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ Kč28.340 250+ Kč26.585 500+ Kč25.832 1000+ Kč24.804	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.3V	5.5V	TSSOP	14Pins	SPI	-40°C	125°C	-	-
MCP795W10-I/ST	3052733 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC Date Time Format (YY/MM/DD/dd HH:MM:SS:hh) SPI 1.8V to 3.6V Supply TSSOP-14	Each	1+ Kč43.388 25+ Kč39.626 100+ Kč38.122 250+ Kč37.369	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS:hh	RTCC	1.8V	3.6V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
DS1344D-3+T&R	3914452 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YY-MM-DD HH:MM:SS 3 Wire SPI 2.7 to 5.5 V TDFN-14	Each (Supplied on Full Reel) Full Reel	2500+ Kč79.253	Min: 2500 / Mult: 2500	YYYY-MM-DD-dd	HH:MM:SS	RTCC	2.7V	5.5V	TDFN	14Pins	3 Wire, SPI	-40°C	85°C	DS1344 Series	-
DS1344D-33+	3914453 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YY-MM-DD HH:MM:SS 3 Wire SPI 3 to 5.5 V TDFN-14 12.5 pF	Tube of 1	100+ Kč107.593	Min: 100 / Mult: 100	YYYY-MM-DD-dd	HH:MM:SS	RTCC	3V	5.5V	TDFN	14Pins	3 Wire, SPI	-40°C	85°C	DS1344 Series	-
DS1343D-33+	3914444 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YY-MM-DD HH:MM:SS 3 Wire SPI 3 to 5.5 V TDFN-14 6 pF	Tube of 1	200+ Kč98.815	Min: 200 / Mult: 200	YYYY-MM-DD-dd	HH:MM:SS	RTCC	3V	5.5V	TDFN	14Pins	3 Wire, SPI	-40°C	85°C	DS1343 Series	-
DS1344D-3+	3914451 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YY-MM-DD HH:MM:SS 3 Wire SPI 2.7 to 5.5 V TDFN-14 -40 to 85 Deg C	Tube of 1	100+ Kč107.593	Min: 100 / Mult: 100	YYYY-MM-DD-dd	HH:MM:SS	RTCC	2.7V	5.5V	TDFN	14Pins	3 Wire, SPI	-40°C	85°C	DS1344 Series	-
MCP795W12-I/SL	2361126 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 SOIC-14	Each	228+ Kč36.868	Min: 228 / Mult: 228	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	3.6V	SOIC	14Pins	SPI	-40°C	85°C	-	AEC-Q100
MCP795W20T-I/SL	3592281 Data Sheet RoHS Date/Lot Code	MICROCHIP Real-Time Clock/Calendar SPI 1.8 V to 3.6V HH:MM:SS:hh YY-MM-DD-dd SOIC-14 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	2600+ Kč36.868	Min: 2600 / Mult: 2600	YY-MM-DD-dd	HH:MM:SS:hh	Calendar, Clock	1.8V	3.6V	SOIC	14Pins	SPI	-40°C	85°C	-	-
DS1344D-33+T&R	2515470 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 3 V to 5.5 V TDFN-14	Each (Supplied on Cut Tape) Cut Tape	2500+ Kč76.745	Min: 2500 / Mult: 2500	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	3V	5.5V	TDFN	14Pins	SPI	-40°C	85°C	-	-
DS1343D-33+T&R	2515469RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 3 V to 5.5 V TDFN-14	Each (Supplied on Cut Tape) Re-Reel Packaging Options	2500+ Kč83.767	Min: 2500 / Mult: 2500	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	3V	5.5V	TDFN	14Pins	SPI	-40°C	85°C	-	-
DS1344D-33+T&R	2515470RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 3 V to 5.5 V TDFN-14	Each (Supplied on Cut Tape) Re-Reel Packaging Options	2500+ Kč76.745	Min: 2500 / Mult: 2500	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	3V	5.5V	TDFN	14Pins	SPI	-40°C	85°C	-	-
DS1343D-33+T&R	2515469 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 3 V to 5.5 V TDFN-14	Each (Supplied on Cut Tape) Cut Tape	2500+ Kč83.767	Min: 2500 / Mult: 2500	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	3V	5.5V	TDFN	14Pins	SPI	-40°C	85°C	-	-
MCP795W21T-I/ST	3592284 Data Sheet RoHS Date/Lot Code	MICROCHIP Real-Time Clock/Calendar SPI 1.8 V to 3.6V HH:MM:SS:hh YY-MM-DD-dd TSSOP-14 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	2500+ Kč39.626	Min: 2500 / Mult: 2500	YY-MM-DD-dd	HH:MM:SS:hh	Calendar, Clock	1.8V	3.6V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
MCP795W22T-I/ST	3592287 Data Sheet RoHS Date/Lot Code	MICROCHIP Real Time Clock RTCC SPI 1.8 V to 3.6 V TSSOP-14 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	2500+ Kč39.626	Min: 2500 / Mult: 2500	YY-MM-DD-dd	HH:MM:SS:hh	RTCC	1.8V	3.6V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
MCP795W12T-I/ST	3592280 Data Sheet RoHS Date/Lot Code	MICROCHIP Real-Time Clock/Calendar SPI 1.8 V to 3.6V HH:MM:SS:hh YY-MM-DD-dd TSSOP-14 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	2500+ Kč37.871	Min: 2500 / Mult: 2500	YY-MM-DD-dd	HH:MM:SS:hh	Calendar, Clock	1.8V	3.6V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
MCP795W10T-I/SL	3592271 Data Sheet RoHS Date/Lot Code	MICROCHIP Real-Time Clock/Calendar SPI 1.8 V to 3.6V HH:MM:SS:hh YY-MM-DD-dd SOIC-14 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	2600+ Kč34.861	Min: 2600 / Mult: 2600	YY-MM-DD-dd	HH:MM:SS:hh	Calendar, Clock	1.8V	3.6V	SOIC	14Pins	SPI	-40°C	85°C	-	-
MCP795W12T-I/SL	3592279 Data Sheet RoHS Date/Lot Code	MICROCHIP Real Time Clock RTCC SPI 1.8 V to 3.6 V SOIC-14 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	2600+ Kč36.868	Min: 2600 / Mult: 2600	YY-MM-DD-dd	HH:MM:SS:hh	RTCC	1.8V	3.6V	SOIC	14Pins	SPI	-40°C	85°C	-	-