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

M48T35Y-70MH1F	2849895 Data Sheet RoHS	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 4.5V to 5.5V SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ CNY116.310 (CNY131.4303)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C
M48T35Y-70MH1F	2849895RL Data Sheet RoHS	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 4.5V to 5.5V SOIC-28	Each (Supplied on Cut Tape) Re-Reel Packaging Options	1+ CNY116.310 (CNY131.4303)	Min: 10 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C
DS1307+	2515369 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C Serial 4.5 V to 5.5 V DIP-8	Each	1+ CNY42.090 (CNY47.5617) 10+ CNY32.210 (CNY36.3973) 50+ CNY28.260 (CNY31.9338) 100+ CNY27.020 (CNY30.5326) 250+ CNY25.700 (CNY29.041) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	DIP	8Pins	I2C, Serial	0°C	70°C
DS1687-5+	2515431 Data Sheet RoHS	ANALOG DEVICES Alarm RTC IC Day/Date/Month/Year/Century hh:mm:ss Multiplexed 4.5 V to 5.5 V EDIP-24	Each	1+ CNY126.860 (CNY143.3518) 14+ CNY123.720 (CNY139.8036) 28+ CNY120.570 (CNY136.2441) 112+ CNY112.070 (CNY126.6391) 252+ CNY108.710 (CNY122.8423) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	Alarm RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C
DS3231S#	2519295 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V WSOIC-16	Each	1+ CNY94.290 (CNY106.5477) 10+ CNY65.300 (CNY73.789) 46+ CNY62.590 (CNY70.7267) 138+ CNY61.680 (CNY69.6984) 276+ CNY60.760 (CNY68.6588) More Pricing...	Min: 1 / Mult: 1	YY-MM-DD	HH:MM:SS	RTC	2.3V	5.5V	WSOIC	16Pins	I2C	0°C	70°C
DS12887+	2518671 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year 12Hr / 24Hr) Multiplexed 4.5 V to 5.5 V DIP-24	Each	1+ CNY90.290 (CNY102.0277) 14+ CNY88.060 (CNY99.5078) 28+ CNY85.830 (CNY96.9879) 112+ CNY79.420 (CNY89.7446) 252+ CNY76.680 (CNY86.6484) More Pricing...	Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	12Hr / 24Hr	RTC	4.5V	5.5V	EDIP	24Pins	Multiplexed	0°C	70°C
DS1307Z+T&R	2798723 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 4.5 V to 5.5 V supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY33.480 (CNY37.8324) 10+ CNY25.490 (CNY28.8037) 25+ CNY23.480 (CNY26.5324) 100+ CNY21.320 (CNY24.0916) 250+ CNY20.240 (CNY22.8712) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	0°C	70°C
DS3231S#T&R	2798759 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.3 V to 5.5 V supply SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ CNY81.290 (CNY91.8577) 10+ CNY63.720 (CNY72.0036) 25+ CNY59.330 (CNY67.0429) 100+ CNY54.440 (CNY61.5172) 250+ CNY52.130 (CNY58.9069) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.3V	5.5V	SOIC	16Pins	I2C	0°C	70°C
M48T02-70PC1	9755764 Data Sheet RoHS	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 4.75 V to 5.5 V DIP-24	Each	1+ CNY151.280 (CNY170.9464) 10+ CNY139.020 (CNY157.0926)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	4.75V	5.5V	DIP	24Pins	Parallel	0°C	70°C
DS1305+	2518659 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year 12Hr / 24Hr) 3 Wire Serial 2 V to 5.5 V DIP-16	Each	1+ CNY69.250 (CNY78.2525) 10+ CNY53.950 (CNY60.9635) 25+ CNY49.410 (CNY55.8333) 100+ CNY44.220 (CNY49.9686) 250+ CNY42.020 (CNY47.4826) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	12Hr / 24Hr	RTC	2V	5.5V	DIP	16Pins	3 Wire, Serial	0°C	70°C
DS1302Z+T&R	2515451 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) Cut Tape	1+ CNY32.730 (CNY36.9849) 10+ CNY25.480 (CNY28.7924) 25+ CNY23.430 (CNY26.4759) 100+ CNY21.380 (CNY24.1594) 250+ CNY20.280 (CNY22.9164) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	NSOIC	8Pins	Serial	0°C	70°C
DS1302+	2518645 Data Sheet RoHS	ANALOG DEVICES Timekeeper IC Date Time Format (Day/Date/Month/Year hh:mm:ss) 3 Wire Serial 2 V to 5.5 V DIP-8	Each	1+ CNY41.000 (CNY46.330) 10+ CNY31.330 (CNY35.4029) 50+ CNY27.380 (CNY30.9394) 100+ CNY25.770 (CNY29.1201) 250+ CNY24.160 (CNY27.3008) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Timekeeper	2V	5.5V	DIP	8Pins	3 Wire, Serial	0°C	70°C
DS1307Z+	2909754 Data Sheet RoHS	ANALOG DEVICES RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 4.5V to 5.5V Supply NSOIC-8	Each	1+ CNY39.900 (CNY45.087) 10+ CNY28.190 (CNY31.8547) 25+ CNY25.920 (CNY29.2896) 100+ CNY23.650 (CNY26.7245) 300+ CNY23.470 (CNY26.5211) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	8Pins	I2C	0°C	70°C
M48T35AV-10PC1	1576955 Data Sheet RoHS	STMICROELECTRONICS RTC Timekeeper NVSRAM Parallel 3 V to 3.6 V DIP-28	Each	1+ CNY203.500 (CNY229.955) 5+ CNY197.460 (CNY223.1298) 10+ CNY191.420 (CNY216.3046) 25+ CNY184.760 (CNY208.7788) 50+ CNY166.950 (CNY188.6535)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Timekeeper	3V	3.6V	DIP	28Pins	Parallel	0°C	70°C
DS1302Z+	2519519 Data Sheet RoHS	ANALOG DEVICES Timekeeper IC Date Time Format (Day/Date/Month/Year hh:mm:ss) 3 Wire Serial 2 V to 5.5 V SOIC-8	Each	1+ CNY36.750 (CNY41.5275) 10+ CNY26.940 (CNY30.4422) 25+ CNY26.870 (CNY30.3631) 100+ CNY23.360 (CNY26.3968) 300+ CNY23.170 (CNY26.1821) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Timekeeper	2V	5.5V	SOIC	8Pins	3 Wire, Serial	0°C	70°C
DS1305E+	2729118 Data Sheet RoHS	ANALOG DEVICES RTC IC Format (Day/Date/Month/Year/12Hr / 24Hr) 3 Wire Serial 2 V to 5.5 V supply TSSOP-20	Each	1+ CNY59.000 (CNY66.670) 10+ CNY45.900 (CNY51.867) 74+ CNY38.360 (CNY43.3468) 148+ CNY38.330 (CNY43.3129) 296+ CNY38.310 (CNY43.2903) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	12Hr / 24Hr	RTC	2V	5.5V	TSSOP	20Pins	3 Wire, Serial	0°C	70°C
M48T35AV-10MH1F	2849939 Data Sheet RoHS	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 3V to 3.6V Supply SOIC-28	Each	1+ CNY157.820 (CNY178.3366) 10+ CNY138.280 (CNY156.2564) 25+ CNY129.790 (CNY146.6627) 50+ CNY129.570 (CNY146.4141) 100+ CNY120.270 (CNY135.9051)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	3V	3.6V	SOIC	28Pins	Parallel	0°C	70°C
DS1302S+T&R	2515449 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Serial 2 V to 5.5 V WSOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ CNY47.950 (CNY54.1835) 10+ CNY34.770 (CNY39.2901) 25+ CNY32.430 (CNY36.6459) 100+ CNY28.480 (CNY32.1824) 250+ CNY20.430 (CNY23.0859) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2V	5.5V	WSOIC	8Pins	Serial	0°C	70°C
DS12887A+	2519011 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Parallel 4.5 V to 5.5 V EDIP-24	Each	1+ CNY89.460 (CNY101.0898) 14+ CNY86.900 (CNY98.197) 28+ CNY84.330 (CNY95.2929) 112+ CNY77.450 (CNY87.5185) 252+ CNY74.230 (CNY83.8799) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	EDIP	24Pins	Parallel	0°C	70°C
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+ CNY190.250 (CNY214.9825) 10+ CNY148.820 (CNY168.1666) 25+ CNY142.160 (CNY160.6408) 50+ CNY134.620 (CNY152.1206) 100+ CNY127.080 (CNY143.6004)	Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	3V	3.6V	SOIC	44Pins	Parallel	0°C	70°C
DS12885S+T&R	2798720 Data Sheet RoHS	ANALOG DEVICES RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) Bytewide 4.5 V to 5.5 V supply SOIC-24	Each (Supplied on Cut Tape) Cut Tape	1+ CNY83.380 (CNY94.2194) 10+ CNY65.300 (CNY73.789) 25+ CNY60.250 (CNY68.0825) 100+ CNY54.610 (CNY61.7093) 250+ CNY52.420 (CNY59.2346) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	4.5V	5.5V	SOIC	24Pins	Bytewide	0°C	70°C
DS3232S#T&R	2830851 Data Sheet RoHS	ANALOG DEVICES RTC Alarm Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 2.3V to 5.5V Supply SOIC-20	Each (Supplied on Cut Tape) Cut Tape	1+ CNY84.840 (CNY95.8692) 10+ CNY66.470 (CNY75.1111) 25+ CNY61.350 (CNY69.3255) 100+ CNY55.710 (CNY62.9523) 250+ CNY53.370 (CNY60.3081) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.3V	5.5V	SOIC	20Pins	I2C	0°C	70°C
M48T58Y-70MH1F	2849896 Data Sheet RoHS	STMICROELECTRONICS RTC Clock/Calendar Date Time Format (YY-MM-DD-dd HH:MM:SS) Parallel 4.5V to 5.5V SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ CNY122.190 (CNY138.0747) 10+ CNY109.250 (CNY123.4525)	Min: 1 / Mult: 1	YY-MM-DD-dd	HH:MM:SS	Calendar, Clock	4.5V	5.5V	SOIC	28Pins	Parallel	0°C	70°C
DS1306E+	2515360 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	1+ CNY58.270 (CNY65.8451) 10+ CNY42.900 (CNY48.477) 74+ CNY36.680 (CNY41.4484) 148+ CNY35.220 (CNY39.7986) 296+ CNY33.750 (CNY38.1375) 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
DS1305E+T&R	3404542 Data Sheet RoHS	ANALOG DEVICES REAL TIME CLOCK 2V TO 5.5V TSSOP-20	Each (Supplied on Cut Tape) Cut Tape	1+ CNY54.830 (CNY61.9579) 10+ CNY42.610 (CNY48.1493) 25+ CNY39.310 (CNY44.4203) 100+ CNY35.800 (CNY40.454) 250+ CNY33.680 (CNY38.0584) More Pricing...	Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2V	5.5V	TSSOP	20Pins	3 Wire, Serial, SPI	0°C	70°C

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