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

DS1308U-33+T	3596303RL Data Sheet RoHS	ANALOG DEVICES Real Time Clock RTC I2C 3 V to 5.5 V µSOP-8 -40 °C to 85 °C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY24.160 (CNY27.3008) 250+ CNY22.990 (CNY25.9787) 500+ CNY22.260 (CNY25.1538) 1000+ CNY21.670 (CNY24.4871)	Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	3V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1339BU+T	3404545RL Data Sheet RoHS	ANALOG DEVICES RTC -40 TO 85DEG C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY25.420 (CNY28.7246) 250+ CNY22.900 (CNY25.877) 500+ CNY22.570 (CNY25.5041) 1000+ CNY22.540 (CNY25.4702)	Min: 100 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	1.71V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS2417P+T&R	2515491RL Data Sheet RoHS	ANALOG DEVICES RTC Binary 1 Wire MicroLAN interface 16.3kbits/s 2.5V to 5.5V Supply TSOC-6	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY18.230 (CNY20.5999) 250+ CNY17.280 (CNY19.5264) 500+ CNY16.110 (CNY18.2043) 4000+ CNY15.380 (CNY17.3794)	Min: 100 / Mult: 1	Binary	Binary	RTC	2.5V	5.5V	TSOC	6Pins	Serial	-40°C	85°C	-	-
M41T93ZQA6F	3132494 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) Serial SPI 2.38V to 5.5V QFN-16	Each (Supplied on Cut Tape) Cut Tape	1+ CNY33.280 (CNY37.6064)	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	2.38V	5.5V	QFN	16Pins	Serial, SPI	-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	1+ CNY81.620 (CNY92.2306) 10+ CNY63.030 (CNY71.2239) 25+ CNY60.100 (CNY67.913) 100+ CNY52.200 (CNY58.986) 250+ CNY49.850 (CNY56.3305) 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	-	-
DS1339C-33#T&R	3404546 Data Sheet RoHS	ANALOG DEVICES REAL TIME CLOCK 2.97V TO 5.5V SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ CNY66.690 (CNY75.3597) 10+ CNY51.900 (CNY58.647) 25+ CNY47.730 (CNY53.9349) 100+ CNY42.680 (CNY48.2284) 250+ CNY40.480 (CNY45.7424) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	SOIC	16Pins	I2C	-40°C	85°C	-	-
ISL1209IU10Z-TK	3265996RL Data Sheet RoHS	RENESAS RTCC -40 TO 85DEG C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY18.300 (CNY20.679) 250+ CNY17.670 (CNY19.9671) 500+ CNY17.030 (CNY19.2439) 1000+ CNY16.390 (CNY18.5207)	Min: 100 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	2.7V	5.5V	MSOP	10Pins	I2C	-40°C	85°C	-	-
DS1337C#T&R	3404543RL Data Sheet RoHS	ANALOG DEVICES RTCC -40 TO 85DEG C WSOIC	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CNY41.730 (CNY47.1549) 25+ CNY38.580 (CNY43.5954) 100+ CNY34.340 (CNY38.8042) 250+ CNY32.290 (CNY36.4877) 500+ CNY31.550 (CNY35.6515) More Pricing...	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
DS1340C-33#T&R	3404548RL Data Sheet RoHS	ANALOG DEVICES RTCC -40 TO 85DEG C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CNY63.030 (CNY71.2239) 25+ CNY60.100 (CNY67.913) 100+ CNY52.200 (CNY58.986) 250+ CNY49.850 (CNY56.3305) 500+ CNY45.460 (CNY51.3698) More Pricing...	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	2.97V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-
MCP79412-I/MS	3385454 Data Sheet RoHS	MICROCHIP RTCC -40 TO 85DEG C	Each	1+ CNY8.670 (CNY9.7971) 25+ CNY8.540 (CNY9.6502) 100+ CNY8.410 (CNY9.5033)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	-
M41T93ZQA6F	3132494RL Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) Serial SPI 2.38V to 5.5V QFN-16	Each (Supplied on Cut Tape) Re-Reel Packaging Options	1+ CNY33.280 (CNY37.6064)	Min: 100 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	2.38V	5.5V	QFN	16Pins	Serial, SPI	-40°C	85°C	-	-
DS1371U+T&R	3404549 Data Sheet RoHS	ANALOG DEVICES Binary Counter I2C 1.7V to 5.5V -40°C to 85°C µSOP-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY32.940 (CNY37.2222) 10+ CNY25.040 (CNY28.2952) 25+ CNY23.060 (CNY26.0578) 100+ CNY20.870 (CNY23.5831) 250+ CNY19.840 (CNY22.4192) More Pricing...	Min: 1 / Mult: 1	Binary	Binary	Binary Counter	1.7V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
DS1339C-33#T&R	3404546RL Data Sheet RoHS	ANALOG DEVICES REAL TIME CLOCK 2.97V TO 5.5V SOIC-16	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CNY51.900 (CNY58.647) 25+ CNY47.730 (CNY53.9349) 100+ CNY42.680 (CNY48.2284) 250+ CNY40.480 (CNY45.7424) 500+ CNY39.680 (CNY44.8384) More Pricing...	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.97V	5.5V	SOIC	16Pins	I2C	-40°C	85°C	-	-
DS1305E+T&R	3404542RL Data Sheet RoHS	ANALOG DEVICES REAL TIME CLOCK 2V TO 5.5V TSSOP-20	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ CNY42.610 (CNY48.1493) 25+ CNY39.310 (CNY44.4203) 100+ CNY35.800 (CNY40.454) 250+ CNY33.680 (CNY38.0584) 500+ CNY32.580 (CNY36.8154) More Pricing...	Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	3 Wire, Serial, SPI	0°C	70°C	-	-
DS1371U+T&R	3404549RL Data Sheet RoHS	ANALOG DEVICES Binary Counter I2C 1.7V to 5.5V -40°C to 85°C µSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY20.870 (CNY23.5831) 250+ CNY19.840 (CNY22.4192) 500+ CNY18.670 (CNY21.0971) 3000+ CNY17.210 (CNY19.4473)	Min: 100 / Mult: 1	Binary	Binary	Binary Counter	1.7V	5.5V	µSOP	8Pins	I2C	-40°C	85°C	-	-
M48T37V-10MH1F	3129609RL 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) Re-Reel Packaging Options	10+ CNY148.820 (CNY168.1666) 25+ CNY142.160 (CNY160.6408) 50+ CNY134.620 (CNY152.1206) 100+ CNY127.080 (CNY143.6004)	Min: 10 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	3V	3.6V	SOIC	44Pins	Parallel	0°C	70°C	-	-
ISL1208IU8Z-TK	3869498RL Data Sheet RoHS	RENESAS Real Time Clock/Calendar IC I2C 2.7 V to 5.5 V HH:MM:SS MSOP-8 -40 °C to 85 °C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	1+ CNY29.660 (CNY33.5158) 10+ CNY22.260 (CNY25.1538) 25+ CNY19.430 (CNY21.9559) 50+ CNY17.940 (CNY20.2722) 100+ CNY16.440 (CNY18.5772) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.7V	5.5V	MSOP	8Pins	I2C	-40°C	85°C	-	-
AB-RTCMC-32.768KHZ-AIGZ-S7-T	3819763RL Data Sheet RoHS	ABRACON Real-Time Clock/Calendar IC I2C HH:MM:SS:hh YY-MM-DD-dd -40 °C to 85 °C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ CNY40.880 (CNY46.1944) 250+ CNY38.810 (CNY43.8553) 500+ CNY36.720 (CNY41.4936)	Min: 100 / Mult: 1	YY-MM-DD-dd	HH:MM:SS:hh	RTC	1.3V	4.4V	CLCC	8Pins	I2C	-40°C	85°C	-	-
AB0815-T3	3819666RL Data Sheet RoHS	ABRACON Real Time Clock HH:MM:SS:hh YY-MM-DD-dd I2C/SPI QFN-EP-16	Each (Supplied on Cut Tape) Re-Reel Packaging Options	50+ CNY18.790 (CNY21.2327) 250+ CNY15.280 (CNY17.2664) 500+ CNY13.920 (CNY15.7296) 1500+ CNY11.940 (CNY13.4922)	Min: 100 / Mult: 5	YY-MM-DD-dd	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN-EP	16Pins	SPI	-40°C	85°C	-	-
AB1805-T3	3819895 Data Sheet RoHS	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+ CNY11.920 (CNY13.4696) 15000+ CNY10.430 (CNY11.7859) 30000+ CNY8.760 (CNY9.8988)	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	-	-
AB-RTCMC-32.768KHZ-AIGZ-S7-T	3819763 Data Sheet RoHS	ABRACON Real-Time Clock/Calendar IC I2C HH:MM:SS:hh YY-MM-DD-dd -40 °C to 85 °C	Each (Supplied on Cut Tape) Cut Tape	1+ CNY45.010 (CNY50.8613) 50+ CNY42.940 (CNY48.5222) 100+ CNY40.880 (CNY46.1944) 250+ CNY38.810 (CNY43.8553) 500+ CNY36.720 (CNY41.4936)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS:hh	RTC	1.3V	4.4V	CLCC	8Pins	I2C	-40°C	85°C	-	-
AB0815-T3	3819666 Data Sheet RoHS	ABRACON Real Time Clock HH:MM:SS:hh YY-MM-DD-dd I2C/SPI QFN-EP-16	Each (Supplied on Cut Tape) Cut Tape	5+ CNY25.440 (CNY28.7472) 50+ CNY18.790 (CNY21.2327) 250+ CNY15.280 (CNY17.2664) 500+ CNY13.920 (CNY15.7296) 1500+ CNY11.940 (CNY13.4922)	Min: 5 / Mult: 5	YY-MM-DD-dd	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN-EP	16Pins	SPI	-40°C	85°C	-	-
AB1815-T3	3819669RL Data Sheet RoHS	ABRACON Real Time Clock HH:MM:SS:hh YY-MM-DD-dd I2C/SPI QFN-EP-16	Each (Supplied on Cut Tape) Re-Reel Packaging Options	50+ CNY14.410 (CNY16.2833) 250+ CNY11.460 (CNY12.9498) 500+ CNY11.220 (CNY12.6786) 1500+ CNY10.980 (CNY12.4074)	Min: 100 / Mult: 5	YY-MM-DD-dd	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN-EP	16Pins	SPI	-40°C	85°C	-	-
AB1815-T3	3820756 Data Sheet RoHS	ABRACON Real Time Clock HH:MM:SS:hh YY-MM-DD-dd I2C/SPI QFN-EP-16	Each (Supplied on Full Reel) Full Reel Packaging Options	3000+ CNY10.600 (CNY11.978) 15000+ CNY9.270 (CNY10.4751) 30000+ CNY7.680 (CNY8.6784)	Min: 3000 / Mult: 3000	YY-MM-DD-dd	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN-EP	16Pins	SPI	-40°C	85°C	-	-
AB-RTCMC-32.768KHZ-IBO5-S3-T	3820849 Data Sheet RoHS	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+ CNY40.110 (CNY45.3243) 5000+ CNY36.200 (CNY40.906)	Min: 1000 / Mult: 1000	YY-MM-DD-dd	HH:MM:SS	RTC	1.5V	3.6V	Module	10Pins	I2C	-40°C	85°C	-	-

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