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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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Manufacturer Part No	Order Code	Description / Manufacturer	Price For	Price (Incl JCT)	Quantity	Date Format	Clock Format	Clock IC Type	Supply Voltage Min	Supply Voltage Max	Clock IC Case Style	No. of Pins	IC Interface Type	Operating Temperature Min	Operating Temperature Max	Product Range	Automotive Qualification Standard
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M41T93SQA6F	2806841 Data Sheet + RoHS	RTC, Date Time Format (Day/Date/Month/Year/Century, HH:MM:SS:hh), SPI, 3V to 5.5V Supply, QFN-16 STMICROELECTRONICS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥601.92 (¥662.11) 10+ ¥418.53 (¥460.38) 25+ ¥404.95 (¥445.45) 50+ ¥391.36 (¥430.50) 100+ ¥377.77 (¥415.55) 250+ ¥358.96 (¥394.86) 500+ ¥346.42 (¥381.06) 1000+ ¥327.61 (¥360.37) More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	3V	5.5V	QFN	16Pins	SPI	-40°C	85°C	-	-
M41T83RQA6F	2806836 Data Sheet + RoHS	RTC, Date Time Format (Day/Date/Month/Year/Century, HH:MM:SS:hh), I2C, 2.7V to 5.5V Supply, QFN-16 STMICROELECTRONICS You previously purchased this product. View in Order History	Each	1+ ¥601.92 (¥662.11) 10+ ¥418.53 (¥460.38) 25+ ¥404.95 (¥445.45) 50+ ¥391.36 (¥430.50) 100+ ¥377.77 (¥415.55) 250+ ¥358.96 (¥394.86) 500+ ¥346.42 (¥381.06) 1000+ ¥335.45 (¥369.00) More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2.7V	5.5V	QFN	16Pins	I2C	-40°C	85°C	-	-
M41T83ZQA6F	3367097 Data Sheet + RoHS	RTC W/BATTERY SWITCHOVER, -40 TO 85DEG C STMICROELECTRONICS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥531.39 (¥584.53) 10+ ¥390.31 (¥429.34) 25+ ¥378.30 (¥416.13) 50+ ¥366.28 (¥402.91) 100+ ¥354.26 (¥389.69) 250+ ¥337.02 (¥370.72) 500+ ¥326.04 (¥358.64) 1000+ ¥311.94 (¥343.13) More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	2.38V	5.5V	QFN	16Pins	Serial I2C	-40°C	85°C	-	-
X1B0003710001	3253615 Data Sheet + RoHS	RTC, -40 TO 105DEG C EPSON You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥1,086.05 (¥1,194.66) 10+ ¥842.51 (¥926.76) 25+ ¥799.47 (¥879.42) 50+ ¥766.03 (¥842.63) 100+ ¥736.20 (¥809.82) 250+ ¥710.76 (¥781.84) 1250+ ¥686.42 (¥755.06) 2500+ ¥664.07 (¥730.48) More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	1.5V	5.5V	-	10Pins	I2C	-40°C	105°C	-	-
M48T201Y-70MH1F	3367099 Data Sheet + RoHS	TIMEKEEPER SUPERVISOR, 0 TO 70DEG C STMICROELECTRONICS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥2,476.65 (¥2,724.32) 10+ ¥2,037.75 (¥2,241.53) 25+ ¥1,912.35 (¥2,103.59) 50+ ¥1,842.60 (¥2,026.86) 100+ ¥1,772.85 (¥1,950.14)	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	Timekeeper	4.5V	5.5V	SOH	44Pins	Parallel	0°C	70°C	-	-

M48T201V-85MH1F	3129629 Data Sheet + RoHS	RTC, Date Time Format (Day/Date/Month/Year/Century, HH:MM:SS), Parallel, 3V to 3.6V Supply, SOIC-44 STMICROELECTRONICS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥2,004.84 (¥2,205.32) 10+ ¥1,818.30 (¥2,000.13) 25+ ¥1,750.90 (¥1,925.99) 50+ ¥1,703.88 (¥1,874.27) 100+ ¥1,656.85 (¥1,822.54)	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	RTC	3V	3.6V	SOIC	44Pins	Parallel	0°C	70°C	-	-

DS1337C#T&R	3404543 Data Sheet + RoHS	RTCC, -40 TO 85DEG C, WSOIC ANALOG DEVICES You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥1,416.98 (¥1,558.68) 10+ ¥955.11 (¥1,050.62) 25+ ¥834.85 (¥918.34) 100+ ¥698.82 (¥768.70) 250+ ¥632.04 (¥695.24) 500+ ¥624.09 (¥686.50) 1000+ ¥616.14 (¥677.75) More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTCC	1.8V	5.5V	WSOIC	16Pins	I2C	-40°C	85°C	-	-

AB-RTCMC-32.768KHZ-B5ZE-S3-T	3820848 Data Sheet + RoHS	Real-Time Clock/Calendar IC, I2C, HH:MM:SS, YY-MM-DD-dd, -40 °C to 85 °C ABRACON You previously purchased this product. View in Order History	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:3820848 3819764 in Cut Tape	1000+ ¥824.72 (¥907.19) 5000+ ¥721.63 (¥793.79) 10000+ ¥624.65 (¥687.12)	Restricted Item Minimum order of 1000 items Multiples of 1000 only Please enter a valid quantity Add Min: 1000 Mult: 1000	YY-MM-DD-dd	HH:MM:SS	RTC	1.2V	5.5V	CLCC	8Pins	I2C	-40°C	85°C	-	-

ISL1208IB8Z	2113280 Data Sheet + RoHS	REAL TIME CLOCK-RTC RENESAS You previously purchased this product. View in Order History	Each	1200+ ¥243.35 (¥267.69) 2500+ ¥209.41 (¥230.35)	Restricted Item	YY-MM-DD-dd	HH:MM:SS	RTC	2.7V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	Multicomp Pro RJ45 Adapter	-

M41T62Q6F	1224441 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year hh:mm:ss), I2C, 1.3 V to 4.4 V, QFN-16 STMICROELECTRONICS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥330.52 (¥363.57) 10+ ¥255.61 (¥281.17) 50+ ¥243.90 (¥268.29) 100+ ¥235.17 (¥258.69) 250+ ¥226.78 (¥249.46) 500+ ¥218.62 (¥240.48) 1000+ ¥215.73 (¥237.30) 2500+ ¥210.05 (¥231.06) More Pricing...	Restricted Item	-	-	-	-	-	-	-	-	-	-	-	-

M41T62LC6F	2806828 Data Sheet + RoHS	RTC, Date Time Format (Day/Date/Month/Year/Century, HH:MM:SS:hh), I2C, 1.3V to 4.4V Supply, LCC-8 STMICROELECTRONICS You previously purchased this product. View in Order History	Each	1+ ¥858.11 (¥943.92) 10+ ¥663.62 (¥729.98) 25+ ¥633.23 (¥696.55) 50+ ¥610.55 (¥671.61) 100+ ¥588.78 (¥647.66) 250+ ¥567.59 (¥624.35) 500+ ¥560.08 (¥616.09) More Pricing...	Restricted Item	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	1.3V	4.4V	LCC	8Pins	I2C	-40°C	85°C	Multicomp Pro RJ45 Adapter	-

X1B0004810002	4071658 Data Sheet + RoHS	Real-Time Clock IC, YY-MM-DD-DW, I2C, 1.6 V to 5.5 V, -40 °C to 105 °C EPSON You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥866.83 (¥953.51) 10+ ¥547.06 (¥601.77) 25+ ¥546.53 (¥601.18) 50+ ¥546.29 (¥600.92)	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD-DW	HH:MM:SS	Alarm RTC	-	-	Module	-	I2C	-	-	-	-

MAX31331EWC+T	4335755 Data Sheet + RoHS	Real Time Clock, 1.1V to 5.5V, HH:MM:SS: 12Hr / 24Hr, -40°C to 85°C, WLP-12 ANALOG DEVICES You previously purchased this product. View in Order History	Each (Supplied on Full Reel) Full Reel	2500+ ¥369.25 (¥406.18) 7500+ ¥254.76 (¥280.24)	Restricted Item Minimum order of 2500 items Multiples of 2500 only Please enter a valid quantity Add Min: 2500 Mult: 2500	DD:MM:YYYY	HH:MM:SS: 12Hr / 24Hr	RTC	1.1V	5.5V	WLP	12Pins	I2C, Serial	-40°C	85°C	-	-

MAX31331TETB+	4335744 Data Sheet + RoHS	Real-Time Clock IC, YY-MM-DD-dd, HH:MM:SS: 12Hr / 24Hr, I2C, 1.1 to 5.5V, -40 °C to 85 °C ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ ¥647.38 (¥712.12) 10+ ¥418.53 (¥460.38) 25+ ¥299.40 (¥329.34) 100+ ¥267.27 (¥294.00) 490+ ¥235.13 (¥258.64) 980+ ¥227.83 (¥250.61) 2940+ ¥220.53 (¥242.58) 5390+ ¥213.22 (¥234.54) More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD-dd	HH:MM:SS: 12Hr / 24Hr	RTC	1.1V	5.5V	TDFN-EP	10Pins	I2C	-40°C	85°C	-	-

MAX31331EWC+	4129939 Data Sheet + RoHS	Real Time Clock IC, RTCC, I2C, 1.1 V to 5.5 V, WLP-12, -40 °C to 85 °C ANALOG DEVICES You previously purchased this product. View in Order History	Each	1+ ¥346.13 (¥380.74) 10+ ¥238.62 (¥262.48) 25+ ¥206.20 (¥226.82) 100+ ¥183.47 (¥201.82) 250+ ¥171.52 (¥188.67) 500+ ¥165.85 (¥182.44) 2500+ ¥161.88 (¥178.07) 5000+ ¥160.80 (¥176.88) More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	YY-MM-DD-dd	HH:MM:SS	RTC	1.1V	5.5V	WLP	12Pins	I2C	-40°C	85°C	-	-

PCF8583T/5,518	2400456 Data Sheet + RoHS	Calendar, Clock IC, Format (YYYY:MM:WK:DD:hh:mm:ss/Binary), I2C, 2.5 V to 6 V supply, SOIC-8 NXP You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥491.28 (¥540.41) 10+ ¥381.37 (¥419.51) 25+ ¥362.69 (¥398.96) 50+ ¥348.18 (¥383.00) 100+ ¥333.38 (¥366.72) 250+ ¥317.92 (¥349.71) 500+ ¥307.86 (¥338.65) 1000+ ¥301.13 (¥331.24) More Pricing...	Restricted Item	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	2.5V	6V	SOIC	8Pins	I2C	-40°C	85°C	Multicomp Pro RJ45 Adapter	-

RV-8564-C3-TA-QC-020	2358525 Data Sheet + RoHS	RTC IC, Date Time Format (Day/Date/Month/Year/Century 24Hr), I2C, 1.2 V to 5.5 V, SON-10 MICRO CRYSTAL You previously purchased this product. View in Order History	Each	1+ ¥1,071.06 (¥1,178.17) 10+ ¥801.69 (¥881.86) 25+ ¥717.98 (¥789.78) 50+ ¥676.38 (¥744.02)	Restricted Item	Day; Date; Month; Year; Century	24Hr	RTC	1.2V	5.5V	SON	10Pins	I2C	-40°C	85°C	Multicomp Pro RJ45 Adapter	-

M41T60Q6F	3129771 Data Sheet + RoHS	RTC, Date Time Format (Day/Date/Month/Year/Century, HH:MM:SS), I2C, 1.3V to 4.4V Supply, QFN-16 STMICROELECTRONICS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ ¥133.11 (¥146.42) 10+ ¥110.66 (¥121.73) 50+ ¥103.64 (¥114.00) 100+ ¥102.43 (¥112.67) 250+ ¥101.21 (¥111.33) 500+ ¥99.99 (¥109.99) 1000+ ¥96.79 (¥106.47) 2500+ ¥93.85 (¥103.24) More Pricing...	Restricted Item	Day; Date; Month; Year; Century	HH:MM:SS	RTC	1.3V	4.4V	QFN	16Pins	I2C	-40°C	85°C	Multicomp Pro RJ45 Adapter	-