HH:MM:SS:hh Real Time Clocks | e絡盟 Hong Kong

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+ HK$12.180 7500+ HK$10.670	Total:HK$30,450.00 Min: 2500 / Mult: 2500	SPI	HH:MM:SS:hh	YY-MM-DD-dd	RTCC	HH:MM:SS:hh	1.8V	3.6V	MSOP	MSOP	SPI	10Pins	-40°C	85°C
M41T80M6F	2806830 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2V to 5.5V Supply SOIC-8	Each	1+ HK$39.500 10+ HK$27.710 50+ HK$26.390 100+ HK$25.060 250+ HK$23.860 More Pricing...	Total:HK$39.50 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2V	5.5V	SOIC	SOIC	I2C	8Pins	-40°C	85°C
M41T81SMY6F	2806831 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 5.5V Supply SOIC-18	Each (Supplied on Cut Tape) Cut Tape	1+ HK$74.550 10+ HK$57.880 25+ HK$53.700 50+ HK$52.570 100+ HK$51.440 More Pricing...	Total:HK$74.55 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	SOIC	I2C	18Pins	-40°C	85°C
M41T93RMY6F	2806839 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) SPI 2.7V to 5.5V Supply SOIC-18	Each (Supplied on Cut Tape) Cut Tape	1+ HK$79.770 10+ HK$62.070 25+ HK$57.710 50+ HK$56.540 100+ HK$55.360 More Pricing...	Total:HK$79.77 Min: 1 / Mult: 1	SPI	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	SOIC	SPI	18Pins	-40°C	85°C
M41T94MQ6F	2806843 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) SPI 2.7V to 5.5V Supply SOIC-16	Each (Supplied on Cut Tape) Cut Tape	1+ HK$55.410 10+ HK$40.190 25+ HK$37.460 50+ HK$35.190 100+ HK$32.920 More Pricing...	Total:HK$55.41 Min: 1 / Mult: 1	SPI	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	SOIC	SPI	16Pins	-40°C	85°C
M41T81M6F	3367096 Data Sheet RoHS	STMICROELECTRONICS REAL-TIME CLOCK W/ALARM -40 TO 85DEG C	Each (Supplied on Cut Tape) Cut Tape	1+ HK$23.990 10+ HK$17.960 25+ HK$16.450 50+ HK$15.610 100+ HK$14.760 More Pricing...	Total:HK$23.99 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2V	5.5V	SOIC	SOIC	I2C	8Pins	-40°C	85°C
M41T94MH6F	2806842 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) SPI 2.7V to 5.5V Supply SOH-28	Each (Supplied on Cut Tape) Cut Tape	1+ HK$82.850 10+ HK$64.640 25+ HK$60.020 50+ HK$58.850 100+ HK$57.680 More Pricing...	Total:HK$82.85 Min: 1 / Mult: 1	SPI	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOH	SOH	SPI	28Pins	-40°C	85°C
MCP79512-I/MS	2810108 Data Sheet RoHS	MICROCHIP Calendar Clock IC Day/Date/Month/Year hh:mm:ss:hh Serial SPI 1.8 V to 3.6 V supply MSOP-10	Each	1+ HK$11.890 25+ HK$10.960 100+ HK$10.440	Total:HK$11.89 Min: 1 / Mult: 1	Serial SPI	HH:MM:SS:hh	Day; Date; Month; Year	Calendar, Clock	HH:MM:SS:hh	1.8V	3.6V	MSOP	MSOP	Serial SPI	10Pins	-40°C	85°C
M41T83RMY6F	2806835 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 5.5V Supply SOIC-18	Each (Supplied on Cut Tape) Cut Tape	1+ HK$44.040 10+ HK$33.610 25+ HK$31.040 50+ HK$29.590 100+ HK$28.140 More Pricing...	Total:HK$44.04 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	SOIC	I2C	18Pins	-40°C	85°C
AB0815-T3	3820754 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+ HK$9.410 9000+ HK$9.110	Total:HK$28,230.00 Min: 3000 / Mult: 3000	SPI	HH:MM:SS:hh	YY-MM-DD-dd	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN-EP	QFN-EP	SPI	16Pins	-40°C	85°C
M41T93RQA6F	2806840 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) SPI 2.7V to 5.5V Supply QFN-16	Each (Supplied on Cut Tape) Cut Tape	1+ HK$62.330 10+ HK$48.140 25+ HK$44.630 50+ HK$43.790 100+ HK$42.950 More Pricing...	Total:HK$62.33 Min: 1 / Mult: 1	SPI	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	QFN	QFN	SPI	16Pins	-40°C	85°C
M41ST85WMX6TR	2806825 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 3.6V Supply SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ HK$81.310 10+ HK$63.270 25+ HK$58.740 50+ HK$57.300 100+ HK$55.860 More Pricing...	Total:HK$81.31 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	3.6V	SOIC	SOIC	I2C	28Pins	-40°C	85°C
M41T82SM6F	2806833 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 3V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ HK$26.090 10+ HK$19.590 25+ HK$17.870 50+ HK$16.980 100+ HK$16.080 More Pricing...	Total:HK$26.09 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	3V	5.5V	SOIC	SOIC	I2C	8Pins	-40°C	85°C
AB0805-T3	2467702 Data Sheet RoHS	ABRACON RTC IC Day:Date:Month:Year:Century HH:MM:SS:hh 1.5 V to 3.6 V QFN 16Pins I2C	Each (Supplied on Cut Tape) Cut Tape	5+ HK$18.530 50+ HK$12.720 100+ HK$11.420 500+ HK$10.910 1500+ HK$10.390	Total:HK$92.65 Min: 5 / Mult: 5	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN	QFN	I2C	16Pins	-40°C	85°C
M41ST87WMX6TR	2806826 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 3V to 3.6V Supply SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ HK$81.140 10+ HK$63.180 25+ HK$58.740 50+ HK$57.580 100+ HK$56.410 More Pricing...	Total:HK$81.14 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	3V	3.6V	SOIC	SOIC	I2C	28Pins	-40°C	85°C
AB1805-T3	2467703 Data Sheet RoHS	ABRACON RTC IC Day:Date:Month:Year:Century HH:MM:SS:hh 1.5 V to 3.6 V QFN 16Pins I2C	Each (Supplied on Cut Tape) Cut Tape	5+ HK$31.040 50+ HK$18.900 100+ HK$16.430 500+ HK$13.510 1500+ HK$11.210	Total:HK$155.20 Min: 5 / Mult: 5	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN	QFN	I2C	16Pins	-40°C	85°C
AB1805-T3	2467703RL Data Sheet RoHS	ABRACON RTC IC Day:Date:Month:Year:Century HH:MM:SS:hh 1.5 V to 3.6 V QFN 16Pins I2C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$16.430 500+ HK$13.510 1500+ HK$11.210	Total:HK$1,643.00 Min: 100 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN	QFN	I2C	16Pins	-40°C	85°C
AB0805-T3	2467702RL Data Sheet RoHS	ABRACON RTC IC Day:Date:Month:Year:Century HH:MM:SS:hh 1.5 V to 3.6 V QFN 16Pins I2C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$11.420 500+ HK$10.910 1500+ HK$10.390	Total:HK$1,142.00 Min: 100 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN	QFN	I2C	16Pins	-40°C	85°C
M41T82RM6F	2806832 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Cut Tape	1+ HK$32.330 10+ HK$24.460 25+ HK$22.490 50+ HK$21.380 100+ HK$20.270 More Pricing...	Total:HK$32.33 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	SOIC	I2C	8Pins	-40°C	85°C
M41ST85WMX6TR	2806825RL Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 3.6V Supply SOIC-28	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ HK$63.270 25+ HK$58.740 50+ HK$57.300 100+ HK$55.860 250+ HK$54.420	Total:HK$632.70 Min: 10 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	3.6V	SOIC	SOIC	I2C	28Pins	-40°C	85°C
M41T83ZMY6F	2806838 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.38V to 5.5V SOIC-18	Each	1+ HK$56.680 10+ HK$43.610 25+ HK$40.360 50+ HK$38.570 100+ HK$36.770 More Pricing...	Total:HK$56.68 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.38V	5.5V	SOIC	SOIC	I2C	18Pins	-40°C	85°C
M41ST87WMX6TR	2806826RL Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 3V to 3.6V Supply SOIC-28	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ HK$63.180 25+ HK$58.740 50+ HK$57.580 100+ HK$56.410 250+ HK$55.240	Total:HK$631.80 Min: 10 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	3V	3.6V	SOIC	SOIC	I2C	28Pins	-40°C	85°C
M41T82ZM6F	2806834 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.38V to 5.5V Supply SOIC-8	Each	1+ HK$27.960 10+ HK$21.040 25+ HK$19.330 50+ HK$18.350 100+ HK$17.360 More Pricing...	Total:HK$27.96 Min: 1 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.38V	5.5V	SOIC	SOIC	I2C	8Pins	-40°C	85°C
M41T82RM6F	2806832RL Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS:hh) I2C 2.7V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$20.270 250+ HK$20.140 500+ HK$20.000 1000+ HK$19.860	Total:HK$2,027.00 Min: 100 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	SOIC	I2C	8Pins	-40°C	85°C
M41T81M6F	3367096RL Data Sheet RoHS	STMICROELECTRONICS REAL-TIME CLOCK W/ALARM -40 TO 85DEG C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$14.760 250+ HK$14.010 500+ HK$13.510 1000+ HK$13.170	Total:HK$1,476.00 Min: 100 / Mult: 1	I2C	HH:MM:SS:hh	Day; Date; Month; Year; Century	Alarm RTC	HH:MM:SS:hh	2V	5.5V	SOIC	SOIC	I2C	8Pins	-40°C	85°C