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.

No Filter(s) Applied

0 Filter(s) Selected

			Price For		Quantity

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	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	3V	5.5V	SOIC	8Pins	I2C	-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	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	2.7V	3.6V	SOIC	28Pins	I2C	-40°C	85°C	-	-
ISL1208IU8Z-TK	3869498 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) Cut Tape	1+ HK$29.420 10+ HK$22.150 25+ HK$20.360 50+ HK$19.340 100+ HK$18.310 More Pricing...	Total:HK$29.42 Min: 1 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.7V	5.5V	MSOP	8Pins	I2C	-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	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN	16Pins	I2C	-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	Day; Date; Month; Year; Century	HH:MM:SS:hh	Alarm RTC	3V	3.6V	SOIC	28Pins	I2C	-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	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN	16Pins	I2C	-40°C	85°C	-	-
M41T11MH6F	2849894 Data Sheet RoHS	STMICROELECTRONICS RTC Clock/Calendar Day/Date/Month/Year/Century HH:MM:SS Serial 2V to 5.5V Supply SOIC-28	Each (Supplied on Cut Tape) Cut Tape	1+ HK$76.350 10+ HK$59.340 25+ HK$55.150 50+ HK$53.980 100+ HK$52.800 More Pricing...	Total:HK$76.35 Min: 1 / Mult: 1	Day; Date; Month; Year; Century	HH:MM:SS	Calendar, Clock	2V	5.5V	SOIC	28Pins	Serial	-40°C	85°C	-	-
RV-3029-C2-TB-QA-OPT.A	2358508 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Year/Month/Date/Hr/Min/Sec 24Hr) I2C 1.3 V to 5.5 V SON-10	Each	1+ HK$81.440 10+ HK$64.910 25+ HK$60.590 50+ HK$57.970 100+ HK$55.530 More Pricing...	Total:HK$81.44 Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	24Hr	RTC	1.3V	5.5V	SON	10Pins	I2C	-40°C	125°C	-	-
MCP795W10-I/SL	2361120 Data Sheet RoHS	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr SPI 1.8 V to 3.6 V SOIC-14	Each	1+ HK$14.970 25+ HK$13.940 100+ HK$13.170	Total:HK$14.97 Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	12Hr / 24Hr	Alarm RTC	1.8V	3.6V	SOIC	14Pins	SPI	-40°C	85°C	-	AEC-Q100
RV-8523-C3-TA-QC-020	2358523 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Day/Date/Month/Year/Century 24Hr) I2C 1.2 V to 5.5 V SON-10	Each	1+ HK$30.920 10+ HK$24.650 25+ HK$22.940 50+ HK$21.950 100+ HK$21.060 More Pricing...	Total:HK$30.92 Min: 1 / Mult: 1	Day; Date; Month; Year; Century	24Hr	RTC	1.2V	5.5V	SON	10Pins	I2C	-40°C	85°C	-	-
ISL12020MIRZ-T7A	2543321RL Data Sheet RoHS	RENESAS RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.7 V to 5.5 V supply DFN-20	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ HK$72.850 25+ HK$67.800 50+ HK$66.010 100+ HK$64.210 250+ HK$62.930	Total:HK$728.50 Min: 10 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.7V	5.5V	DFN	20Pins	I2C	-40°C	85°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+ HK$26.730 250+ HK$25.410 500+ HK$24.630 1000+ HK$24.120	Total:HK$2,673.00 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	-	-
PCF8523TS/1,118	2427485RL Data Sheet RoHS	NXP Calendar Clock IC Year/Month/Week/Date/Hr/Min/Sec Binary I2C 1.2 V to 5.5 V TSSOP-14	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$7.720 250+ HK$7.300 500+ HK$7.050 1000+ HK$6.800 2500+ HK$6.630	Total:HK$772.00 Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	1.2V	5.5V	TSSOP	14Pins	I2C	-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+ HK$19.120 250+ HK$18.710 500+ HK$18.450	Total:HK$1,912.00 Min: 100 / Mult: 1	-	-	Alarm RTC	1.6V	5.5V	SOP	8Pins	I2C	-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	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN	16Pins	I2C	-40°C	85°C	-	-
AB0805-T3	2302153RL Data Sheet RoHS	ABRACON RTC IC RC/XTAL 1.7 V to 3.6 V QFN 16Pins I2C	Each Packaging Options	100+ HK$10.440 250+ HK$10.150 500+ HK$9.850 1000+ HK$9.560 2500+ HK$9.260	Total:HK$1,044.00 Min: 100 / Mult: 5	-	-	RTC	1.7V	3.6V	QFN	16Pins	I2C	-40°C	85°C	AB08XX	-
X1B0003010002	2445809RL Data Sheet RoHS	EPSON RTC IC Calendar 2.5 V to 5.5 V 14Pins I2C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$28.380 250+ HK$27.770 500+ HK$27.150	Total:HK$2,838.00 Min: 100 / Mult: 1	-	-	Alarm RTC	2.5V	5.5V	-	10Pins	I2C	-40°C	85°C	-	-
ISL1208IU8Z-T7A	2543322RL Data Sheet RoHS	RENESAS RTC IC Date Time Format (Day/Date/Month/Year hh:mm:ss) I2C 2.7 V to 5.5 V supply MSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$25.650 250+ HK$22.920 500+ HK$22.240 1000+ HK$22.100	Total:HK$2,565.00 Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	RTC	2.7V	5.5V	MSOP	8Pins	I2C	-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	Day; Date; Month; Year; Century	HH:MM:SS:hh	RTC	1.5V	3.6V	QFN	16Pins	I2C	-40°C	85°C	-	-
M41T56M6F	2463679RL Data Sheet RoHS	STMICROELECTRONICS RTC IC Date Time Format (Date/Month/Year ss:mm:hh) I2C 4.5 V to 5.5 V SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$15.360 500+ HK$14.760 1000+ HK$14.350	Total:HK$1,536.00 Min: 100 / Mult: 5	DD:MM:YYYY	ss:mm:hh	RTC	4.5V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
X1B0003110001	2478574RL Data Sheet RoHS	EPSON RTC IC XTAL 1.25 V to 5 V 10Pins I2C	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$15.510 250+ HK$15.150 500+ HK$14.780 1000+ HK$14.720	Total:HK$1,551.00 Min: 100 / Mult: 1	-	-	RTC	1.25V	5V	-	10Pins	I2C	-40°C	85°C	-	-
MCP7940MT-I/SN	2901506RL Data Sheet RoHS	MICROCHIP RTC Alarm RTC Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 1.8V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$5.630	Total:HK$563.00 Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	1.8V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-
PCF85363ATT/AJ	2775939RL Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 900 mV to 5.5 V supply TSSOP-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$6.520 250+ HK$6.120 500+ HK$5.880 1000+ HK$5.430 2500+ HK$5.040	Total:HK$652.00 Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	TSSOP	8Pins	I2C	-40°C	85°C	-	-
PCF85263ATL/AX	2775935RL Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) I2C 900 mV to 5.5 V supply DFN2626-10	Each (Supplied on Cut Tape) Re-Reel Packaging Options	50+ HK$5.670 250+ HK$4.910 1000+ HK$4.540 2000+ HK$4.460	Total:HK$567.00 Min: 100 / Mult: 5	YYYY:MM:WK:DD:Hr:Min:Secs	Binary	Calendar, Clock	900mV	5.5V	DFN2626	10Pins	I2C	-40°C	85°C	-	-
ISL1208IB8Z-TK	2983745RL Data Sheet RoHS	RENESAS RTC Alarm Date Time Format (Day/Date/Month/Year HH:MM:SS) I2C 2.7V to 5.5V Supply SOIC-8	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$14.800 250+ HK$14.370 500+ HK$14.090 1000+ HK$13.800	Total:HK$1,480.00 Min: 100 / Mult: 1	Day; Date; Month; Year	HH:MM:SS	Alarm RTC	2.7V	5.5V	SOIC	8Pins	I2C	-40°C	85°C	-	-