Real Time Clocks | element14 China

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

RV-3029-C2 OPTION B	1641059 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Year/Month/Date/Hr/Min/Sec 12Hr / 24Hr) I2C 1.3 V to 5.5 V SON-10	Each (Supplied on Cut Tape) Cut Tape	1+ CNY54.520 (CNY61.6076) 10+ CNY42.470 (CNY47.9911) 25+ CNY38.890 (CNY43.9457) 50+ CNY37.220 (CNY42.0586) 100+ CNY35.710 (CNY40.3523) More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	12Hr / 24Hr	RTC	1.3V	5.5V	SON	10Pins	I2C	-40°C	85°C	-	-
DS1306E+T&R	2515454 Data Sheet RoHS	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+ CNY51.100 (CNY57.743) 10+ CNY39.390 (CNY44.5107) 25+ CNY36.460 (CNY41.1998) 100+ CNY33.310 (CNY37.6403) 250+ CNY31.770 (CNY35.9001) 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	-	-
PCF2127AT/2Y	2400449RL Data Sheet RoHS	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) Re-Reel Packaging Options	100+ CNY23.590 (CNY26.6567) 250+ CNY22.490 (CNY25.4137) 500+ CNY22.100 (CNY24.973) 1000+ CNY22.010 (CNY24.8713)	Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.8V	4.2V	SOIC	20Pins	I2C, SPI	-40°C	85°C	-	-
ISL12022MIBZ-T	2113277 Data Sheet RoHS	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+ CNY57.600 (CNY65.088) 10+ CNY45.750 (CNY51.6975) 25+ CNY40.450 (CNY45.7085) 50+ CNY37.500 (CNY42.375) 100+ CNY34.820 (CNY39.3466)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	2.7V	5.5V	SOIC	20Pins	I2C	-40°C	85°C	-	-
RV-8564-C2	1539389RL Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C 1.2 V to 5.5 V SON-10	Each (Supplied on Cut Tape) Cut Tape	10+ CNY41.230 (CNY46.5899) 25+ CNY37.750 (CNY42.6575) 50+ CNY36.130 (CNY40.8269) 100+ CNY34.660 (CNY39.1658) 250+ CNY33.340 (CNY37.6742) More Pricing...	Min: 10 / Mult: 1	DD:MM:YYYY	HH:MM:SS	RTC	1.2V	5.5V	SON	10Pins	I2C	-40°C	85°C	-	-
DS1305EN+T&R	2515453 Data Sheet RoHS	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 (Supplied on Cut Tape) Cut Tape	1+ CNY60.540 (CNY68.4102) 10+ CNY46.710 (CNY52.7823) 25+ CNY42.170 (CNY47.6521) 100+ CNY38.800 (CNY43.844) 250+ CNY37.040 (CNY41.8552) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	SPI	-40°C	85°C	-	-
DS1338U-33+T&R	2515461 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY38.730 (CNY43.7649) 10+ CNY29.580 (CNY33.4254) 25+ CNY27.310 (CNY30.8603) 100+ CNY24.530 (CNY27.7189) 250+ CNY22.990 (CNY25.9787) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
M41T00SM6F	2463681RL Data Sheet RoHS	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+ CNY18.080 (CNY20.4304) 500+ CNY16.210 (CNY18.3173) 1000+ CNY15.320 (CNY17.3116)	Min: 100 / Mult: 5	DD:MM:YYYY	ss:mm:hh	RTC	2.7V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
X1B0002320001	2445808RL Data Sheet RoHS	EPSON RTC IC Calendar 1.6 V to 5.5 V SOP 14Pins I2C SPI	Each (Supplied on Cut Tape) Cut Tape	100+ CNY34.130 (CNY38.5669) 250+ CNY33.730 (CNY38.1149)	Min: 100 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	14Pins	I2C, SPI	-40°C	85°C	-	-
DS1344E-33+	2515362 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) SPI 3 V to 5.5 V TSSOP-20	Each	1+ CNY50.880 (CNY57.4944) 10+ CNY33.460 (CNY37.8098) 74+ CNY29.140 (CNY32.9282) 148+ CNY28.590 (CNY32.3067) 296+ CNY28.040 (CNY31.6852) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	3V	5.5V	TSSOP	20Pins	SPI	-40°C	85°C	-	-
DS1302Z+T&R	2515451RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY21.380 (CNY24.1594) 250+ CNY20.280 (CNY22.9164) 500+ CNY19.180 (CNY21.6734) 2500+ CNY18.740 (CNY21.1762)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	NSOIC	8Pins	Serial	0°C	70°C	-	-
DS1302SN+T&R	2515450 Data Sheet RoHS	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+ CNY37.630 (CNY42.5219) 10+ CNY28.700 (CNY32.431) 25+ CNY26.500 (CNY29.945) 100+ CNY23.940 (CNY27.0522) 250+ CNY22.550 (CNY25.4815) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	-40°C	85°C	-	-
DS1340U-33+T&R	2515465 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.97 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY38.730 (CNY43.7649) 10+ CNY29.580 (CNY33.4254) 25+ CNY27.310 (CNY30.8603) 100+ CNY24.530 (CNY27.7189) 250+ CNY22.990 (CNY25.9787) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1391U-33+T&R	2515477 Data Sheet RoHS	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) Cut Tape	1+ CNY38.730 (CNY43.7649) 10+ CNY29.580 (CNY33.4254) 25+ CNY27.310 (CNY30.8603) 100+ CNY24.530 (CNY27.7189) 250+ CNY22.990 (CNY25.9787) More Pricing...	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	-	-
DS1388Z-33+T&R	2515475RL Data Sheet RoHS	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+ CNY38.870 (CNY43.9231) 25+ CNY35.950 (CNY40.6235) 100+ CNY32.070 (CNY36.2391) 250+ CNY30.090 (CNY34.0017) 500+ CNY28.770 (CNY32.5101) More Pricing...	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS:hh	RTC	2.97V	3.63V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1337U+T&R	2515456 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 1.8 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY28.110 (CNY31.7643) 10+ CNY21.230 (CNY23.9899) 25+ CNY19.550 (CNY22.0915) 100+ CNY17.650 (CNY19.9445) 250+ CNY16.770 (CNY18.9501) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.8V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1394U-33+T&R	2515478 Data Sheet RoHS	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) Cut Tape	1+ CNY38.730 (CNY43.7649) 10+ CNY29.580 (CNY33.4254) 25+ CNY27.310 (CNY30.8603) 100+ CNY24.820 (CNY28.0466) 250+ CNY23.580 (CNY26.6454) More Pricing...	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	-	-
DS1340U-33+	2515382 Data Sheet RoHS	ANALOG DEVICES Real Time Clock/Calendar IC Trickle Charger I2C HH:MM:SS Day; Date; Month; Year 5.5 V µSOP-8	Each	1+ CNY44.290 (CNY50.0477) 10+ CNY33.970 (CNY38.3861) 50+ CNY29.800 (CNY33.674) 100+ CNY28.550 (CNY32.2615) 250+ CNY27.160 (CNY30.6908) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1374U-33+T&R	2515472 Data Sheet RoHS	ANALOG DEVICES Binary Counter IC Date Time Format (Binary) I2C 2.97 V to 5.5 V µSOP-10	Each (Supplied on Cut Tape) Cut Tape	1+ CNY36.230 (CNY40.9399) 10+ CNY24.580 (CNY27.7754) 25+ CNY23.060 (CNY26.0578) 100+ CNY22.300 (CNY25.199)	Min: 1 / Mult: 1	Binary	Binary	Binary Counter	2.97V	5.5V	µSOP	10Pins	I2C	-40°C	85°C	-	-
DS1340Z-33+T&R	2515466RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.97 V to 5.5 V NSOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY24.820 (CNY28.0466) 250+ CNY23.580 (CNY26.6454) 500+ CNY22.840 (CNY25.8092) 1000+ CNY22.260 (CNY25.1538)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-
DS1338U-33+T&R	2515461RL Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 3 V to 5.5 V µSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY24.530 (CNY27.7189) 250+ CNY22.990 (CNY25.9787) 500+ CNY22.040 (CNY24.9052) 1000+ CNY21.600 (CNY24.408)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1391U-33+	2515395 Data Sheet RoHS	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+ CNY43.850 (CNY49.5505) 10+ CNY33.600 (CNY37.968) 50+ CNY29.280 (CNY33.0864) 100+ CNY27.670 (CNY31.2671) 250+ CNY25.920 (CNY29.2896) More Pricing...	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	-	-
CDP68HC68T1M2Z	9663797 Data Sheet RoHS	RENESAS RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) SPI 3V to 6V Supply SOIC-16	Each	1+ CNY168.530 (CNY190.4389) 10+ CNY123.800 (CNY139.894) 25+ CNY114.540 (CNY129.4302) 50+ CNY110.890 (CNY125.3057) 100+ CNY107.230 (CNY121.1699)	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	6V	SOIC	16Pins	SPI	-40°C	85°C	-	-
X1B0002420001	2445807RL Data Sheet RoHS	EPSON RTC IC Calendar 1.6 V to 5.5 V SOP 8Pins I2C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY16.720 (CNY18.8936)	Min: 100 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	8Pins	I2C	-40°C	85°C	-	-
DS3231MZ+	2515358 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V NSOIC-8	Each	1+ CNY84.840 (CNY95.8692) 10+ CNY62.010 (CNY70.0713) 25+ CNY58.060 (CNY65.6078) 100+ CNY54.100 (CNY61.133) 300+ CNY53.590 (CNY60.5567) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	NSOIC	8Pins	I2C	-40°C	85°C	-	-

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