Real Time Clocks:

35 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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ComparePrice ForQuantity
2518690

RoHS

Each
1+
CNY43.130
(CNY48.7369)
10+
CNY30.530
(CNY34.4989)
25+
CNY28.370
(CNY32.0581)
100+
CNY26.210
(CNY29.6173)
300+
CNY25.930
(CNY29.3009)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
ss:mm:hh
RTC
3V
5.5V
SOIC
8Pins
I2C, Serial
-40°C
85°C
1576955

RoHS

Each
1+
CNY203.500
(CNY229.955)
5+
CNY197.460
(CNY223.1298)
10+
CNY191.420
(CNY216.3046)
25+
CNY184.760
(CNY208.7788)
50+
CNY166.950
(CNY188.6535)
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
Timekeeper
3V
3.6V
DIP
28Pins
Parallel
0°C
70°C
2515463

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY38.730
(CNY43.7649)
10+
CNY29.580
(CNY33.4254)
25+
CNY27.310
(CNY30.8603)
100+
CNY24.530
(CNY27.7189)
250+
CNY22.990
(CNY25.9787)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
2765023

RoHS

Each
1+
CNY67.250
(CNY75.9925)
10+
CNY46.660
(CNY52.7258)
46+
CNY43.780
(CNY49.4714)
138+
CNY43.060
(CNY48.6578)
276+
CNY42.340
(CNY47.8442)
More Pricing...
Min: 1 / Mult: 1
DD:MM:YY
HH:MM:SS
RTC
3V
5.5V
SOIC
16Pins
I2C
-40°C
85°C
2849939

RoHS

Each
1+
CNY157.820
(CNY178.3366)
10+
CNY138.280
(CNY156.2564)
25+
CNY129.790
(CNY146.6627)
50+
CNY129.570
(CNY146.4141)
100+
CNY120.270
(CNY135.9051)
Min: 1 / Mult: 1
YY-MM-DD-dd
HH:MM:SS
Calendar, Clock
3V
3.6V
SOIC
28Pins
Parallel
0°C
70°C
2515373

RoHS

Each
1+
CNY38.510
(CNY43.5163)
10+
CNY30.530
(CNY34.4989)
50+
CNY28.700
(CNY32.431)
100+
CNY27.240
(CNY30.7812)
250+
CNY25.700
(CNY29.041)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
3129609

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY190.250
(CNY214.9825)
10+
CNY148.820
(CNY168.1666)
25+
CNY142.160
(CNY160.6408)
50+
CNY134.620
(CNY152.1206)
100+
CNY127.080
(CNY143.6004)
Min: 1 / Mult: 1
Day; Date; Month; Year; Century
HH:MM:SS
RTC
3V
3.6V
SOIC
44Pins
Parallel
0°C
70°C
2515376

RoHS

Each
1+
CNY43.850
(CNY49.5505)
10+
CNY33.600
(CNY37.968)
50+
CNY29.210
(CNY33.0073)
100+
CNY27.310
(CNY30.8603)
250+
CNY25.620
(CNY28.9506)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
3118313

RoHS

Each
1+
CNY25.330
(CNY28.6229)
10+
CNY22.170
(CNY25.0521)
25+
CNY18.360
(CNY20.7468)
50+
CNY16.470
(CNY18.6111)
100+
CNY15.200
(CNY17.176)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
3.6V
SOIC
8Pins
I2C
-40°C
85°C
3596303

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY37.780
(CNY42.6914)
10+
CNY28.850
(CNY32.6005)
25+
CNY26.580
(CNY30.0354)
100+
CNY24.160
(CNY27.3008)
250+
CNY22.990
(CNY25.9787)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
3404544

RoHS

ANALOG DEVICES
Each (Supplied on Cut Tape)
Cut Tape
1+
CNY64.080
(CNY72.4104)
10+
CNY50.120
(CNY56.6356)
25+
CNY43.640
(CNY49.3132)
100+
CNY38.090
(CNY43.0417)
250+
CNY37.420
(CNY42.2846)
More Pricing...
Min: 1 / Mult: 1
YY-MM-DD
HH:MM:SS
RTC
3V
5.5V
SOIC
16Pins
I2C
-40°C
85°C
2806833

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY24.690
(CNY27.8997)
10+
CNY17.050
(CNY19.2665)
25+
CNY16.480
(CNY18.6224)
50+
CNY15.920
(CNY17.9896)
100+
CNY15.340
(CNY17.3342)
More Pricing...
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
2515463RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY24.530
(CNY27.7189)
250+
CNY22.990
(CNY25.9787)
500+
CNY22.400
(CNY25.312)
1000+
CNY22.040
(CNY24.9052)
Min: 100 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
NSOIC
8Pins
I2C
-40°C
85°C
2806826

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY66.030
(CNY74.6139)
10+
CNY51.410
(CNY58.0933)
25+
CNY47.740
(CNY53.9462)
50+
CNY46.920
(CNY53.0196)
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
9663797

RoHS

Each
1+
CNY168.530
(CNY190.4389)
10+
CNY123.800
(CNY139.894)
25+
CNY114.540
(CNY129.4302)
50+
CNY110.890
(CNY125.3057)
100+
CNY107.230
(CNY121.1699)
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
6V
SOIC
16Pins
SPI
-40°C
85°C
2515461

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
CNY38.730
(CNY43.7649)
10+
CNY29.580
(CNY33.4254)
25+
CNY27.310
(CNY30.8603)
100+
CNY24.530
(CNY27.7189)
250+
CNY22.990
(CNY25.9787)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
2515362

RoHS

Each
1+
CNY50.880
(CNY57.4944)
10+
CNY33.460
(CNY37.8098)
74+
CNY29.140
(CNY32.9282)
148+
CNY28.590
(CNY32.3067)
296+
CNY28.040
(CNY31.6852)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
3V
5.5V
TSSOP
20Pins
SPI
-40°C
85°C
2515461RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY24.530
(CNY27.7189)
250+
CNY22.990
(CNY25.9787)
500+
CNY22.040
(CNY24.9052)
1000+
CNY21.600
(CNY24.408)
Min: 100 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
2515361

RoHS

Each
1+
CNY50.880
(CNY57.4944)
10+
CNY38.220
(CNY43.1886)
74+
CNY32.360
(CNY36.5668)
148+
CNY31.810
(CNY35.9453)
296+
CNY31.260
(CNY35.3238)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
Alarm RTC
3V
5.5V
TSSOP
20Pins
SPI
-40°C
85°C
2798735

RoHS

Each
1+
CNY248.140
(CNY280.3982)
10+
CNY247.890
(CNY280.1157)
40+
CNY247.770
(CNY279.9801)
120+
CNY247.640
(CNY279.8332)
280+
CNY247.520
(CNY279.6976)
Min: 1 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
3.6V
PWRCP
34Pins
Bytewide
0°C
70°C
2806826RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY51.410
(CNY58.0933)
25+
CNY47.740
(CNY53.9462)
50+
CNY46.920
(CNY53.0196)
Min: 10 / Mult: 1
Day; Date; Month; Year; Century
HH:MM:SS:hh
Alarm RTC
3V
3.6V
SOIC
28Pins
I2C
-40°C
85°C
2909694

RoHS

Each
1+
CNY141.430
(CNY159.8159)
10+
CNY110.020
(CNY124.3226)
25+
CNY102.050
(CNY115.3165)
100+
CNY93.990
(CNY106.2087)
250+
CNY90.920
(CNY102.7396)
More Pricing...
Min: 1 / Mult: 1
Day; Date; Month; Year; Century
HH:MM:SS
Alarm RTC
3V
3.6V
WSOIC
28Pins
Parallel
-40°C
85°C
3596303RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
CNY24.160
(CNY27.3008)
250+
CNY22.990
(CNY25.9787)
500+
CNY22.260
(CNY25.1538)
1000+
CNY21.670
(CNY24.4871)
Min: 100 / Mult: 1
Day; Date; Month; Year
HH:MM:SS
RTC
3V
5.5V
µSOP
8Pins
I2C
-40°C
85°C
3129609RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY148.820
(CNY168.1666)
25+
CNY142.160
(CNY160.6408)
50+
CNY134.620
(CNY152.1206)
100+
CNY127.080
(CNY143.6004)
Min: 10 / Mult: 1
Day; Date; Month; Year; Century
HH:MM:SS
RTC
3V
3.6V
SOIC
44Pins
Parallel
0°C
70°C
3404544RL

RoHS

ANALOG DEVICES
Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
CNY50.120
(CNY56.6356)
25+
CNY43.640
(CNY49.3132)
100+
CNY38.090
(CNY43.0417)
250+
CNY37.420
(CNY42.2846)
500+
CNY36.740
(CNY41.5162)
More Pricing...
Min: 10 / Mult: 1
YY-MM-DD
HH:MM:SS
RTC
3V
5.5V
SOIC
16Pins
I2C
-40°C
85°C
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