SPI 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

PCF2123TS/1,118	2775930 Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) SPI 1.1 V to 5.5 V supply TSSOP-14	Each (Supplied on Cut Tape) Cut Tape	1+ HK$11.900 10+ HK$8.690 50+ HK$7.870 100+ HK$6.980 250+ HK$6.530 More Pricing...	Total:HK$11.90 Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	SPI	Binary	Calendar, Clock	Binary	1.1V	5.5V	TSSOP	14Pins	TSSOP	SPI	-40°C	85°C	-	-
PCF2123TS/1,118	2775930RL Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) SPI 1.1 V to 5.5 V supply TSSOP-14	Each (Supplied on Cut Tape) Re-Reel Packaging Options	100+ HK$6.980 250+ HK$6.530 500+ HK$6.280 1000+ HK$6.040 2500+ HK$5.920	Total:HK$698.00 Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	SPI	Binary	Calendar, Clock	Binary	1.1V	5.5V	TSSOP	14Pins	TSSOP	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	100+ HK$10.580 500+ HK$9.300	Total:HK$1,058.00 Min: 100 / Mult: 5	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN-EP	16Pins	QFN-EP	SPI	-40°C	85°C	-	-
AB1815-T3	3819669 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+ HK$17.010 50+ HK$11.720 100+ HK$10.580 500+ HK$9.300	Total:HK$85.05 Min: 5 / Mult: 5	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN-EP	16Pins	QFN-EP	SPI	-40°C	85°C	-	-
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	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTCC	HH:MM:SS:hh	1.8V	3.6V	MSOP	10Pins	MSOP	SPI	-40°C	85°C	-	-
MCP79511-I/MS	2361125 Data Sheet RoHS	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr SPI 1.8 V to 3.6 V MSOP-10	Each	1+ HK$11.890 25+ HK$10.960 100+ HK$10.440	Total:HK$11.89 Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	SPI	12Hr / 24Hr	Alarm RTC	12Hr / 24Hr	1.8V	3.6V	MSOP	10Pins	MSOP	SPI	-40°C	85°C	AEC-Q100	AEC-Q100
PCA21125T/Q900/1,1	2400445 Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) SPI 1.3 V to 5.5 V supply TSSOP-14	Each (Supplied on Cut Tape) Cut Tape	1+ HK$18.680 10+ HK$13.850 50+ HK$12.640 100+ HK$11.300 250+ HK$10.660 More Pricing...	Total:HK$18.68 Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	SPI	Binary	Calendar, Clock	Binary	1.3V	5.5V	TSSOP	14Pins	TSSOP	SPI	-40°C	125°C	-	-
MCP79510-I/MS	2361124 Data Sheet RoHS	MICROCHIP Alarm RTC IC Year/Month/Week/Date/Hr/Min/Sec 12Hr / 24Hr SPI 1.8 V to 3.6 V MSOP-10	Each	1+ HK$11.040 25+ HK$10.270 100+ HK$9.670	Total:HK$11.04 Min: 1 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	SPI	12Hr / 24Hr	Alarm RTC	12Hr / 24Hr	1.8V	3.6V	MSOP	10Pins	MSOP	SPI	-40°C	85°C	AEC-Q100	AEC-Q100
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	Day; Date; Month; Year; Century	SPI	HH:MM:SS:hh	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	18Pins	SOIC	SPI	-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	Day; Date; Month; Year; Century	SPI	HH:MM:SS:hh	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOIC	16Pins	SOIC	SPI	-40°C	85°C	-	-
RV-3049-C3-TA-QC-OPT.A	2358518 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Year/Month/Date/Hr/Min/Sec 24Hr) SPI 1.3 V to 5.5 V SON-10	Each	1+ HK$69.980 10+ HK$55.950 25+ HK$52.200 50+ HK$49.900 100+ HK$47.850 More Pricing...	Total:HK$69.98 Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	SPI	24Hr	RTC	24Hr	1.3V	5.5V	SON	10Pins	SON	SPI	-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	Day; Date; Month; Year; Century	SPI	HH:MM:SS:hh	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	SOH	28Pins	SOH	SPI	-40°C	85°C	-	-
M41T93ZMY6F	3129790 Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) SPI 2.38V to 5.5V Supply SOIC-18	Each (Supplied on Cut Tape) Cut Tape	1+ HK$79.770 10+ HK$62.070 25+ HK$57.630 50+ HK$56.480 100+ HK$55.330 More Pricing...	Total:HK$79.77 Min: 1 / Mult: 1	Day; Date; Month; Year; Century	SPI	HH:MM:SS	RTC	HH:MM:SS	2.38V	5.5V	SOIC	18Pins	SOIC	SPI	-40°C	85°C	-	-
PCA21125T/Q900/1,1	2400445RL Data Sheet RoHS	NXP Calendar Clock IC Format (YYYY:MM:WK:DD:hh:mm:ss/Binary) SPI 1.3 V to 5.5 V supply TSSOP-14	Each (Supplied on Cut Tape) Re-Reel	100+ HK$11.300 250+ HK$10.660 500+ HK$10.280 1000+ HK$9.970 2500+ HK$9.670	Total:HK$1,130.00 Min: 100 / Mult: 1	YYYY:MM:WK:DD:Hr:Min:Secs	SPI	Binary	Calendar, Clock	Binary	1.3V	5.5V	TSSOP	14Pins	TSSOP	SPI	-40°C	125°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$9.040	Total:HK$27,120.00 Min: 3000 / Mult: 3000	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN-EP	16Pins	QFN-EP	SPI	-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	Day; Date; Month; Year; Century	SPI	HH:MM:SS:hh	Alarm RTC	HH:MM:SS:hh	2.7V	5.5V	QFN	16Pins	QFN	SPI	-40°C	85°C	-	-
RV-3049-C3-TB-QA-OPT.B	2358521 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Year/Month/Date/Hr/Min/Sec 24Hr) SPI 1.3 V to 5.5 V SON-10	Each	1+ HK$58.410 10+ HK$46.560 25+ HK$43.330 50+ HK$41.460 100+ HK$39.780 More Pricing...	Total:HK$58.41 Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	SPI	24Hr	RTC	24Hr	1.3V	5.5V	SON	10Pins	SON	SPI	-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	SPI	12Hr / 24Hr	Alarm RTC	12Hr / 24Hr	1.8V	3.6V	SOIC	14Pins	SOIC	SPI	-40°C	85°C	AEC-Q100	AEC-Q100
M41T93ZMY6F	3129790RL Data Sheet RoHS	STMICROELECTRONICS RTC Date Time Format (Day/Date/Month/Year/Century HH:MM:SS) SPI 2.38V to 5.5V Supply SOIC-18	Each (Supplied on Cut Tape) Re-Reel Packaging Options	10+ HK$62.070 25+ HK$57.630 50+ HK$56.480 100+ HK$55.330 250+ HK$54.180	Total:HK$620.70 Min: 10 / Mult: 1	Day; Date; Month; Year; Century	SPI	HH:MM:SS	RTC	HH:MM:SS	2.38V	5.5V	SOIC	18Pins	SOIC	SPI	-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	100+ HK$10.780 500+ HK$10.570 1500+ HK$10.350	Total:HK$1,078.00 Min: 100 / Mult: 5	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN-EP	16Pins	QFN-EP	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+ HK$9.300	Total:HK$27,900.00 Min: 3000 / Mult: 3000	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN-EP	16Pins	QFN-EP	SPI	-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+ HK$16.340 50+ HK$11.040 100+ HK$10.780 500+ HK$10.570 1500+ HK$10.350	Total:HK$81.70 Min: 5 / Mult: 5	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTC	HH:MM:SS:hh	1.5V	3.6V	QFN-EP	16Pins	QFN-EP	SPI	-40°C	85°C	-	-
RV-2123-C2-TA-QC-020	2358506 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Day/Date/Month/Year/Century 24Hr) SPI 1.1 V to 5.5 V SON-10	Each	1+ HK$40.330 10+ HK$32.240 25+ HK$30.080 50+ HK$28.760 100+ HK$27.570 More Pricing...	Total:HK$40.33 Min: 1 / Mult: 1	Day; Date; Month; Year; Century	SPI	24Hr	RTC	24Hr	1.1V	5.5V	SON	10Pins	SON	SPI	-40°C	85°C	-	-
RV-3049-C3-TB-QA-OPT.A	2358520 Data Sheet RoHS	MICRO CRYSTAL RTC IC Date Time Format (Year/Month/Date/Hr/Min/Sec 24Hr) SPI 1.3 V to 5.5 V SON-10	Each	1+ HK$36.120 10+ HK$28.880 25+ HK$26.950 50+ HK$25.760 100+ HK$24.700 More Pricing...	Total:HK$36.12 Min: 1 / Mult: 1	YYYY:MM:DD:Hr:Min:Secs	SPI	24Hr	RTC	24Hr	1.3V	5.5V	SON	10Pins	SON	SPI	-40°C	125°C	-	-
MCP795W10-I/ST	3052733 Data Sheet RoHS	MICROCHIP RTCC Date Time Format (YY/MM/DD/dd HH:MM:SS:hh) SPI 1.8V to 3.6V Supply TSSOP-14	Each	1+ HK$15.480 25+ HK$13.600 100+ HK$13.330	Total:HK$15.48 Min: 1 / Mult: 1	YY-MM-DD-dd	SPI	HH:MM:SS:hh	RTCC	HH:MM:SS:hh	1.8V	3.6V	TSSOP	14Pins	TSSOP	SPI	-40°C	85°C	-	-