Real Time Clocks | Farnell Italy

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

M48T37V-10MH1F	3129609 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) Parallel 3V to 3.6V Supply SOIC-44	Each (Supplied on Cut Tape) Cut Tape	1+ €22.130 10+ €17.750 25+ €16.660 50+ €16.060 100+ €15.460	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	3V	3.6V	SOIC	44Pins	Parallel	0°C	70°C	-	-
PCF2123BS/1,518	2775940RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 1.1 V to 5.5 V supply HVQFN-16	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ €0.748 250+ €0.702 500+ €0.675 1000+ €0.628 2500+ €0.615	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.1V	5.5V	HVQFN	16Pins	I2C	-40°C	85°C	-	-
DS3232SN#T&R	2798761 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-20	Each (Supplied on Cut Tape) Cut Tape	1+ €11.810 10+ €9.290 25+ €8.630 100+ €7.880 250+ €7.540 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.3V	5.5V	SOIC	20Pins	I2C	-40°C	85°C	-	-
DS1391U-33+T&R	2515477RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS:hh Alarm RTC SPI 2.97 V to 5.5 V Supply µSOP-10	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ €3.250 250+ €3.080 500+ €2.990	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	Alarm RTC	2.97V	5.5V	µSOP	10Pins	SPI	-40°C	85°C	-	-
M41T83RMY6F	2806835 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 5.5V Supply SOIC-18	Each (Supplied on Cut Tape) Cut Tape	1+ €4.610 10+ €3.520 25+ €3.250 50+ €3.150 100+ €2.860 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2.7V	5.5V	SOIC	18Pins	I2C	-40°C	85°C	-	-
M48T35AV-10MH1F	2849939 Data Sheet RoHS Date/Lot Code	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 3V to 3.6V Supply SOIC-28	Each	1+ €19.680 10+ €17.270 25+ €16.200 50+ €15.610 100+ €15.020	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	3V	3.6V	SOIC	28Pins	Parallel	0°C	70°C	-	-
X1B0003710002	3253614 Data Sheet RoHS Date/Lot Code	EPSON RTC -40 TO 105DEG C	Each (Supplied on Cut Tape) Cut Tape	1+ €4.320 10+ €3.040 25+ €2.720 50+ €2.410 100+ €2.130 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	1.5V	5.5V	-	10Pins	I2C	-40°C	105°C	-	-
DS1340C-33#T&R	3404548 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTCC -40 TO 85DEG C	Each (Supplied on Cut Tape) Cut Tape	1+ €8.700 10+ €6.770 25+ €6.290 100+ €5.750 250+ €5.510 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	2.97V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
PCF2131TFY	3874833 Data Sheet RoHS Date/Lot Code	NXP Real Time Clock/Calendar IC I2C SPI 1.2 V to 5.5 V HH:MM:SS: 12Hr / 24Hr YY-MM-DD-DW HLSON-16	Each (Supplied on Cut Tape) Cut Tape	1+ €3.060 10+ €2.300 25+ €2.100 50+ €2.000 100+ €1.890 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-DW	HH:MM:SS: 12Hr / 24Hr	Calendar, Clock	1.2V	5.5V	HLSON	16Pins	I2C, SPI	-40°C	85°C	-	AEC-Q100
MAX31343ETAY+	3924943 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YYYY-MM-DD-dd HH:MM:SS I2C 1.6 to 5.5 V TDFN-8	Each (Supplied in a Waffle Tray)	1+ €5.400 10+ €4.140 25+ €3.820 100+ €3.470 490+ €3.110 More Pricing...	Min: 1 / Mult: 1	YYYY-MM-DD-dd	HH:MM:SS	RTCC	1.6V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	MAX31343 Series	-
AB1805-T3	3819895 Data Sheet RoHS Date/Lot Code	ABRACON Real Time Clock RTC I2C 1.5 V to 3.6 V HH:MM:SS:hh Day; Date; Month; Year; Century QFN	Each (Supplied on Full Reel) Full Reel Packaging Options	3000+ €1.090 9000+ €0.958	Min: 3000 / Mult: 3000	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN	16Pins	I2C	-40°C	85°C	-	-
PCA2131TF/Q900Y	3874832 Data Sheet RoHS Date/Lot Code	NXP Real Time Clock/Calendar IC I2C SPI 1.2 V to 5.5 V HH:MM:SS: 12Hr / 24Hr YY-MM-DD-DW HLSON-16	Each (Supplied on Cut Tape) Cut Tape	1+ €3.660 10+ €2.770 25+ €2.550 50+ €2.430 100+ €2.300 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-DW	HH:MM:SS: 12Hr / 24Hr	Calendar, Clock	1.2V	5.5V	HLSON	16Pins	I2C, SPI	-40°C	105°C	-	AEC-Q100
MAX31341CETB+T	3914523 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YYYY-MM-DD-dd HH:MM:SS I2C 1.6 to 3.6 V TDFN-10	Each (Supplied on Cut Tape) Cut Tape	1+ €2.190 10+ €1.630 25+ €1.490 100+ €1.330 250+ €1.260 More Pricing...	Min: 1 / Mult: 1	YYYY-MM-DD-dd	HH:MM:SS	RTCC	1.6V	3.6V	TDFN	10Pins	I2C	-40°C	85°C	MAX31341C Series	-
DS1306E+	2515360 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 2 V to 5.5 V TSSOP-20	Each	1+ €7.620 10+ €5.910 74+ €4.890 148+ €4.810 296+ €4.730 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	SPI	0°C	70°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+ €2.860 250+ €2.800 500+ €2.650 1000+ €2.600	Min: 100 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	14Pins	I2C, SPI	-40°C	85°C	-	-
DS1306E+T&R	2515454 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS Alarm RTC SPI 2 V to 5.5 V Supply TSSOP-20	Each (Supplied on Cut Tape) Cut Tape	1+ €6.650 10+ €5.130 25+ €4.750 100+ €4.340 250+ €4.140 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	SPI	0°C	70°C	-	-
DS3231M+TRL	2515485RL 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) Re-Reel Packaging Options	10+ €8.200 25+ €7.620 100+ €7.000 250+ €6.700 500+ €6.530	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
ISL12022MIBZ-T	2113277 Data Sheet RoHS Date/Lot Code	RENESAS RTC Date Time Format (YY/MM/DD/dd HH:MM:SS) I2C 2.7V to 5.5V Supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ €7.710 10+ €5.780 25+ €5.510 50+ €5.230 100+ €4.550 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	2.7V	5.5V	SOIC	20Pins	I2C	-40°C	85°C	-	-
DS12C887A+	2515426 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+ €12.770 14+ €9.850 28+ €9.370 112+ €8.670 252+ €8.660 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	-	-
MCP79412T-I/MNY	2361123RL 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) Re-Reel Packaging Options	100+ €0.926 3300+ €0.908	Min: 100 / 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
M41T56M6F	2463679RL Data Sheet RoHS	STMICROELECTRONICS RTC IC Date Time Format (Date/Month/Year ss:mm:hh) I2C 4.5 V to 5.5 V SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ €1.990 500+ €1.830 1000+ €1.760	Min: 100 / Mult: 5	DD:MM:YYYY	ss:mm:hh	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
DS1302SN+T&R	2515450 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC Day/Date/Month/Year HH:MM:SS RTC Serial 2 V to 5.5 V Supply WSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ €4.920 10+ €3.750 25+ €3.470 100+ €3.140 250+ €2.990 More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	-40°C	85°C	-	-
PCA8565TS/1,118	2400446RL Data Sheet RoHS Date/Lot Code	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 1.8 V to 5.5 V supply TSSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ €1.180 250+ €1.110 500+ €1.070 1000+ €1.030 2500+ €0.948	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	5.5V	TSSOP	8Pins	I2C	-40°C	125°C	-	-
PCA2129T/Q900/2,51	2427480RL 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) Re-Reel Packaging Options	100+ €3.540 250+ €3.370 500+ €3.260	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	16Pins	I2C, SPI	-40°C	85°C	-	-
DS1388Z-33+T&R	2515475RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss:hh) I2C 2.97 V to 3.63 V NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ €5.080 25+ €4.700 100+ €4.290 250+ €4.090 500+ €3.970	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	2.97V	3.63V	NSOIC	8Pins	I2C	-40°C	85°C	-	-