Real Time Clocks:

526 Products Found
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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2515397

RoHS

Each
1+
HK$40.480
10+
HK$34.340
50+
HK$31.990
100+
HK$29.650
250+
HK$28.120
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
Alarm RTC
2.97V
5.5V
µSOP
10Pins
SPI
-40°C
85°C
-
-
2775929RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$4.250
250+
HK$4.190
500+
HK$4.120
1000+
HK$4.050
2500+
HK$3.980
Min: 100 / Mult: 1
YY-MM-DD-DW
HH:MM:SS: 24Hr
Calendar, Clock
1V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2798762RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
HK$66.740
25+
HK$60.370
100+
HK$53.270
250+
HK$53.220
500+
HK$53.200
More Pricing...
Min: 10 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2V
5.5V
SOIC
20Pins
SPI
0°C
70°C
-
-
3253614

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$30.100
10+
HK$29.530
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTC
1.5V
5.5V
-
10Pins
I2C
-40°C
105°C
-
-
3253614RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
HK$29.530
Min: 100 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTC
1.5V
5.5V
-
10Pins
I2C
-40°C
105°C
-
-
3592268

RoHS

Each (Supplied on Full Reel)
Full Reel
2500+
HK$11.990
7500+
HK$10.940
Min: 2500 / Mult: 2500
YY-MM-DD-dd
HH:MM:SS:hh
RTCC
1.8V
3.6V
MSOP
10Pins
SPI
-40°C
85°C
-
-
4071659

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$38.020
10+
HK$32.220
Min: 1 / Mult: 1
YY-MM-DD-DW
HH:MM:SS
Alarm RTC
1.6V
5.5V
Module
10Pins
I2C
-40°C
105°C
-
-
4071655

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$46.880
10+
HK$39.850
25+
HK$38.070
50+
HK$37.050
Min: 1 / Mult: 1
YY-MM-DD-DW
HH:MM:SS
Alarm RTC
1.6V
5.5V
Module
10Pins
I2C
-40°C
105°C
-
-
4071659RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
HK$32.220
Min: 100 / Mult: 1
YY-MM-DD-DW
HH:MM:SS
Alarm RTC
1.6V
5.5V
Module
10Pins
I2C
-40°C
105°C
-
-
4071655RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
HK$39.850
25+
HK$38.070
50+
HK$37.050
Min: 10 / Mult: 1
YY-MM-DD-DW
HH:MM:SS
Alarm RTC
1.6V
5.5V
Module
10Pins
I2C
-40°C
105°C
-
-
4153554

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$24.500
10+
HK$18.420
25+
HK$16.860
100+
HK$15.130
250+
HK$14.230
More Pricing...
Min: 1 / Mult: 1
YY-MM-DD
HH:MM:SS
RTC
1.1V
5.5V
WLCSP
12Pins
I2C
-40°C
85°C
-
-
4153554RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$15.130
250+
HK$14.230
500+
HK$12.660
2500+
HK$12.250
Min: 100 / Mult: 1
YY-MM-DD
HH:MM:SS
RTC
1.1V
5.5V
WLCSP
12Pins
I2C
-40°C
85°C
-
-
2361117

RoHS

Each
1+
HK$7.810
25+
HK$7.240
100+
HK$6.830
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
12Hr / 24Hr
Alarm RTC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2098894

RoHS

Each
1+
HK$6.090
25+
HK$5.660
Min: 1 / Mult: 1
DD:MM:YYYY
HH:MM:SS
RTC
1.8V
5.5V
DIP
8Pins
I2C
-40°C
85°C
-
AEC-Q100
2361119

RoHS

Each
1+
HK$8.550
25+
HK$7.900
100+
HK$7.490
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
12Hr / 24Hr
Alarm RTC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2361114

RoHS

Each
1+
HK$7.570
25+
HK$7.500
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
12Hr / 24Hr
Alarm RTC
1.8V
5.5V
DIP
8Pins
I2C
-40°C
85°C
-
AEC-Q100
2361125

RoHS

Each
1+
HK$11.430
25+
HK$10.530
100+
HK$10.400
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
12Hr / 24Hr
Alarm RTC
1.8V
3.6V
MSOP
10Pins
SPI
-40°C
85°C
-
AEC-Q100
2515431

RoHS

Each
1+
HK$142.460
14+
HK$138.930
28+
HK$135.390
112+
HK$125.850
252+
HK$122.070
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
-
-
2427480

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$41.930
10+
HK$35.520
25+
HK$32.310
50+
HK$31.310
100+
HK$30.310
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
1.8V
4.2V
SOIC
16Pins
I2C, SPI
-40°C
85°C
-
-
2098890

RoHS

Each
1+
HK$5.510
25+
HK$5.440
Min: 1 / Mult: 1
DD:MM:YYYY
HH:MM:SS
RTC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
AEC-Q100
2518743

RoHS

Each
1+
HK$37.980
10+
HK$26.230
50+
HK$23.190
100+
HK$21.050
250+
HK$20.060
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
ss:mm:hh
RTC
1.8V
5.5V
DIP
8Pins
I2C, Serial
-40°C
85°C
-
-
2515487

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$87.470
10+
HK$68.400
25+
HK$63.630
100+
HK$58.370
250+
HK$55.900
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2.3V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
-
-
2515464

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$46.040
10+
HK$35.270
25+
HK$32.560
100+
HK$29.350
250+
HK$27.710
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
2.97V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
-
-
2519296

RoHS

Each
1+
HK$112.950
10+
HK$82.780
36+
HK$70.290
108+
HK$68.070
252+
HK$67.000
More Pricing...
Min: 1 / Mult: 1
YY-MM-DD
HH:MM:SS
RTC
2V
5.5V
SOIC
20Pins
SPI
-40°C
85°C
-
-
2515439

RoHS

Each
1+
HK$322.480
12+
HK$300.360
36+
HK$294.770
108+
HK$288.530
252+
HK$279.570
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS:hh
RTC
4.5V
5.5V
EDIP
28Pins
Parallel
0°C
70°C
-
-
26-50 of 526 items
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