RTCC Real Time Clocks | Farnell® UK

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	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+ £0.85	Min: 2500 / Mult: 2500	YY-MM-DD-dd	HH:MM:SS:hh	RTCC	1.8V	3.6V	MSOP	10Pins	SPI	-40°C	85°C	-	-
DS1337C#T&R	3404543RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTCC -40 TO 85DEG C WSOIC	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ £3.76 250+ £3.49 500+ £3.40	Min: 100 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
DS1337C#T&R	3404543 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTCC -40 TO 85DEG C WSOIC	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ £5.22 10+ £4.67 25+ £4.32 100+ £3.76 250+ £3.49 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	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 Packaging Options	1+ £0.93 25+ £0.86 100+ £0.82 3300+ £0.78	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	-	-
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+ £0.76 25+ £0.74 100+ £0.73 250+ £0.72	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTCC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	125°C	-	-
ISL1209IU10Z-TK	3265996 Data Sheet RoHS Date/Lot Code	RENESAS RTCC -40 TO 85DEG C	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ £3.54 10+ £2.84 25+ £2.45 50+ £2.23 100+ £2.01 More Pricing...	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	2.7V	5.5V	MSOP	10Pins	I2C	-40°C	85°C	-	-
DS1340C-33#T&R	3404548 Data Sheet RoHS	ANALOG DEVICES RTCC -40 TO 85DEG C	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ £6.37 10+ £5.44 25+ £5.06 100+ £4.39 250+ £4.08 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	-	-
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+ £4.62 10+ £3.54 25+ £3.16 100+ £2.84 490+ £2.67 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	-
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+ £1.89 10+ £1.40 25+ £1.28 100+ £1.15 250+ £1.08 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	-
MCP79401-I/MS	2947744 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC Date Time Format (YY/MM/DD/dd HH:MM:SS) I2C 1.8V to 5.5V Supply MSOP-8	Each	1+ £0.89 25+ £0.83 100+ £0.79 250+ £0.78	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	-
MCP7940NT-I/MNY	2851655 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 Packaging Options	1+ £0.78 25+ £0.78 100+ £0.78 3300+ £0.77	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	-	-
MCP79410T-I/MNY	2851649RL 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) Re-Reel Packaging Options	100+ £0.82 3300+ £0.78	Min: 100 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	-	-
DS1340C-33#T&R	3404548RL Data Sheet RoHS Date/Lot Code	ANALOG DEVICES RTCC -40 TO 85DEG C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ £5.44 25+ £5.06 100+ £4.39 250+ £4.08 500+ £4.00	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	2.97V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
PCA85073ADP/Q900Z	3378955 Data Sheet RoHS Date/Lot Code	NXP RTCC -40 TO 105DEG C	Each (Supplied on Cut Tape) Cut Tape Packaging Options	1+ £1.16 10+ £0.84 50+ £0.76 100+ £0.68 250+ £0.64 More Pricing...	Min: 1 / Mult: 1	YYYY-MM-DD	HH:MM:SS	RTCC	900mV	5.5V	TSSOP	8Pins	I2C	-40°C	105°C	-	AEC-Q100
MCP7940NT-I/MNY	2851655RL 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) Re-Reel Packaging Options	100+ £0.78 3300+ £0.77	Min: 100 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	TDFN	8Pins	I2C	-40°C	85°C	-	-
PCA85073ADP/Q900Z	3378955RL Data Sheet RoHS Date/Lot Code	NXP RTCC -40 TO 105DEG C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ £0.68 250+ £0.64 500+ £0.62 1000+ £0.60 2500+ £0.57	Min: 100 / Mult: 1	YYYY-MM-DD	HH:MM:SS	RTCC	900mV	5.5V	TSSOP	8Pins	I2C	-40°C	105°C	-	AEC-Q100
ISL1209IU10Z-TK	3265996RL Data Sheet RoHS Date/Lot Code	RENESAS RTCC -40 TO 85DEG C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ £2.01 250+ £1.79 500+ £1.66 1000+ £1.64	Min: 100 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	2.7V	5.5V	MSOP	10Pins	I2C	-40°C	85°C	-	-
MCP79412-I/MS	3385454 Data Sheet RoHS Date/Lot Code	MICROCHIP RTCC -40 TO 85DEG C	Each	1+ £0.97 25+ £0.89 100+ £0.87 250+ £0.85	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°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+ £1.49 25+ £1.36 100+ £1.30 250+ £1.27	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS:hh	RTCC	1.8V	3.6V	TSSOP	14Pins	SPI	-40°C	85°C	-	-
MCP79410T-I/SN	3592249 Data Sheet RoHS	MICROCHIP Real Time Clock RTCC I2C 1.8 V to 5.5 V SOIC-8 -40 °C to 85 °C	Each (Supplied on Full Reel) Full Reel	3300+ £0.75 9900+ £0.73	Min: 3300 / Mult: 3300	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	SOIC	8Pins	2 Wire, I2C, Serial	-40°C	85°C	-	-
DS17487-3IND+	3404550 Data Sheet RoHS	ANALOG DEVICES RTCC -40 TO 85DEG C	Each	42+ £15.17	Min: 42 / Mult: 42	YY-MM-DD-dd	HH:MM:SS	RTCC	2.7V	3.7V	EDIP	24Pins	Bytewide	-40°C	85°C	-	-
MCP7940N-E/MS	3592242 Data Sheet RoHS Date/Lot Code	MICROCHIP Real Time Clock RTCC I2C 1.8 V to 5.5 V MSOP-8 -40 °C to 125 °C	Each	400+ £0.65	Min: 400 / Mult: 400	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	MSOP	8Pins	2 Wire, I2C, Serial	-40°C	125°C	-	AEC-Q100
DS1393U-33+	3914463 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YYYY-MM-DD-dd HH:MM:SS:hh 3 Wire 2.97 to 5.5 V µSOP-10	Tube of 1	150+ £2.58	Min: 150 / Mult: 150	YYYY-MM-DD-dd	HH:MM:SS:hh	RTCC	2.97V	5.5V	µSOP	10Pins	3 Wire	-40°C	85°C	DS1393 Series	-
DS1556WP-120IND+	3914470 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YYYY-MM-DD HH:MM:SS Bytewide 2.97 to 3.63 V PWRCP-34 -40 to 85 Deg C	Each (Supplied in a Waffle Tray)	40+ £32.38	Min: 40 / Mult: 40	YYYY-MM-DD-dd	HH:MM:SS	RTCC	2.97V	3.63V	PWRCP	34Pins	Bytewide	-40°C	85°C	DS1556 Series	-
MAX31328NELB+T	3914521 Data Sheet RoHS Date/Lot Code	ANALOG DEVICES Real Time Clock IC YY-MM-DD HH:MM:SS I2C 2.3 to 5.5 V LGA-10	Each (Supplied on Full Reel) Full Reel	2500+ £2.09	Min: 2500 / Mult: 2500	YYYY-MM-DD-dd	HH:MM:SS	RTCC	2.3V	5.5V	LGA	10Pins	I2C	-40°C	85°C	MAX31328 Series	-