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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1823155

RoHS

Each
1+
HK$11.490
25+
HK$10.060
100+
HK$8.330
Min: 1 / Mult: 1
DD:MM:YY
HH:MM:SS
RTC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
MCP79410 MCP79411 MCP79412
AEC-Q100
2361122

RoHS

Each
1+
HK$6.990
25+
HK$6.870
100+
HK$6.750
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
-
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
-
-
2400452RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$5.760
250+
HK$5.760
500+
HK$5.750
1000+
HK$5.740
2500+
HK$5.730
Min: 100 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
1.2V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2427483

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$7.720
10+
HK$4.990
100+
HK$4.110
500+
HK$3.940
1000+
HK$3.660
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
900mV
5.5V
HWSON
8Pins
I2C
-40°C
85°C
-
-
2515369

RoHS

Each
1+
HK$44.150
10+
HK$36.260
50+
HK$31.730
100+
HK$30.170
250+
HK$28.200
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
4.5V
5.5V
DIP
8Pins
I2C, Serial
0°C
70°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
-
-
2400452

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$10.910
10+
HK$7.210
50+
HK$6.800
100+
HK$5.760
250+
HK$5.760
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
1.2V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2518671

RoHS

Each
1+
HK$103.080
14+
HK$100.540
28+
HK$97.990
112+
HK$90.670
252+
HK$87.550
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:DD:Hr:Min:Secs
12Hr / 24Hr
RTC
4.5V
5.5V
EDIP
24Pins
Multiplexed
0°C
70°C
-
-
2775937

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$4.580
50+
HK$4.230
100+
HK$3.880
500+
HK$3.730
1000+
HK$3.540
Min: 5 / Mult: 5
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
900mV
5.5V
TSSOP
8Pins
I2C
-40°C
85°C
-
-
2890042

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$6.540
10+
HK$4.180
100+
HK$4.050
500+
HK$3.920
1000+
HK$3.790
More Pricing...
Min: 1 / Mult: 1
YY-MM-DD-DW
HH:MM:SS: 12Hr / 24Hr
Calendar, Clock
900mV
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2798763

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$94.210
10+
HK$77.110
25+
HK$69.220
100+
HK$64.040
250+
HK$61.570
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
2V
5.5V
SOIC
20Pins
SPI
-40°C
85°C
-
-
2841031

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$13.250
10+
HK$8.820
50+
HK$8.330
100+
HK$7.830
250+
HK$7.360
More Pricing...
Min: 1 / Mult: 1
DD:MM:YY
HH:MM:SS
Alarm RTC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2361118

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
-
-
2400451

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$26.550
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
-
-
2775936

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$9.140
10+
HK$6.180
50+
HK$5.850
100+
HK$5.520
250+
HK$5.190
More Pricing...
Min: 1 / Mult: 1
YYYY:MM:WK:DD:Hr:Min:Secs
Binary
Calendar, Clock
900mV
5.5V
TSSOP
8Pins
I2C
-40°C
85°C
-
-
2910068

RoHS

Each
1+
HK$49.000
10+
HK$34.780
25+
HK$31.740
100+
HK$28.690
300+
HK$28.370
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
4.5V
5.5V
SOIC
8Pins
I2C, Serial
-40°C
85°C
-
-
2806827

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
HK$21.300
10+
HK$14.850
50+
HK$14.180
100+
HK$13.510
250+
HK$12.750
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year; Century
HH:MM:SS
RTC
2V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2909754

RoHS

Each
1+
HK$44.800
10+
HK$31.650
25+
HK$28.940
100+
HK$26.230
300+
HK$26.070
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
4.5V
5.5V
SOIC
8Pins
I2C
0°C
70°C
-
-
2851649

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$9.340
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
RTCC
1.8V
5.5V
TDFN
8Pins
I2C
-40°C
85°C
-
-
2857529

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$6.990
25+
HK$6.840
100+
HK$6.820
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
85°C
-
-
2920808

RoHS

Each
1+
HK$10.520
25+
HK$9.200
100+
HK$7.870
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTCC
1.8V
5.5V
SOIC
8Pins
I2C
-40°C
125°C
-
-
2849895

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$171.150
10+
HK$144.020
25+
HK$142.540
50+
HK$141.060
100+
HK$139.580
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
Calendar, Clock
4.5V
5.5V
SOIC
28Pins
Parallel
0°C
70°C
-
-
2098889

RoHS

Each
1+
HK$5.840
25+
HK$5.430
100+
HK$5.100
Min: 1 / Mult: 1
DD:MM:YYYY
HH:MM:SS
RTC
1.8V
5.5V
MSOP
8Pins
I2C
-40°C
85°C
-
AEC-Q100
1576955

RoHS

Each
1+
HK$251.210
5+
HK$225.810
10+
HK$200.410
25+
HK$187.010
50+
HK$180.840
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
Timekeeper
3V
3.6V
DIP
28Pins
Parallel
0°C
70°C
-
-
1-25 of 526 items
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