Finding your suitable rtc clock arduino is not easy. You may need consider between hundred or thousand products from many store. In this article, we make a short list of the best rtc clock arduino including detail information and customer reviews. Let’s find out which is your favorite one.
Reviews
1. Diymore DS3231 AT24C32 IIC High Precision RTC Module Clock Timer Memory Board Beats DS1307 for Arduino
Feature
DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus.
Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options.
A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply. In addition, RST pin is monitored as generating ?P reset manually.
Description
Specification: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, disconnect the main power supply and maintains accurate timekeeping.
Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year.
This temperature sensor accuracy is 3 C. On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply.
If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.
Module parameters:
1. Size: 38mm (L) * 22mm (W) * 14mm (H)
2. Operating voltage :3.3 - 5 .5 V.
3. clock chip: high-precision clock chip DS3231..
4. Clock Accuracy :0-40 range, the accuracy 2ppm, the error was about 1 minute.
5. calendar alarm clock with two.
6. chip temperature sensor comes with an accuracy of 3.
7. memory chips: AT24C32 (storage capacity 32K).
8. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V).
Note: Don't inclue battery, it only need 0.01 dollars, it's not safty to ship by air mail. So hope you can understand it.
Package Included:
1 X DS3231 AT24C32 IIC High Precision RTC Module Clock Timer Memory Module
2. Holdding DS3231 AT24C32 IIC Module Precision Real Time Clock Memory Module Arduino/Precise Time Clock Module with a Temperature-compensated Crystal Oscillator
Feature
Operating voltage: 3.3 - 5.5VClock chip: high-precision clock chip DS3231
Memory chips: AT24C32 (storage capacity 32K)
Clock Accuracy: within 0-40 C range, the accuracy 2ppm, the error was about 1 minute per year.
Description
Specification:Size: 38 x 22 x 14mm
Weight: 8g
Temperature accuracy: 3 C
Maximum transmission speed: 400KHz (working voltage of 5V)
Feature:
Low-cost, accurate I2C real-time clock (RTC) module with a temperature-compensated crystal oscillator (TCXO) improving long-term accuracy
Precise temperature sensor, through the I2C interface for access
Rechargeable battery LIR2032, maintaining accurate timekeeping without main power
Automatically adjusted including corrections for leap year
Calendar alarm clock with two programmable square-wave output
Generating seconds, minutes, hours, day, month and year timing till 2100
Cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
Rechargeable battery LIR2032, preventing the system from power failure
Wiring instructions (with Arduino uno r3 for example):
SCLA5
SDAA4
VCC5V
GNDGND
Package included:
1x DS3231 AT24C32 IIC module
3. DAOKI 5 PCS DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi
Feature
NOTE: THIS ITEM COMES WITHOUT BATTERY.Module itself can adapt 3.3V and 5V systems without level conversion.
Within -40 C to +85 C temperature range, timing accuracy is maintained at 5ppm ( 0.432 sec / day).
Device package and function compatible with the DS3231.
Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100.
Description
Feature:1. Within -40 C to +85 C temperature range, timing accuracy is maintained at 5ppm ( 0.432 sec / day).
2. Provide battery backup for continuous timing.
3. Low-power.
4. Device package and function compatible with the DS3231.
5. Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100.
6. Two calendar alarm.
7. 1Hz and 32.768kHz output.
8. Reset button and button input.
9. High-speed (400kHz) I2C serial bus.
10. +2.3 V to +5.5 V supply voltage.
11. 3C accuracy digital temperature sensor.
12. -40C to +85C operating temperature range.
13. 16-pin SO (300mil) package
Package included:
5 x DS3231 Clock Module
NOTE: THIS ITEM COMES WITHOUT BATTERY.
4. Gikfun DS1307 AT24C32 Real Clock Module For Arduino EK1159_
Feature
DS1307 Real Time Clock56 Bytes of Non-volatile memory available to user
Description
Arduino I2C RTC DS1307 AT24C32 Real Time Clock Module For AVR ARM PIC SMD5. Diymore 2Pcs High Precision DS3231 AT24C32 IIC RTC Clock Timer Memory Module Replace DS1307 for Arduino
Feature
DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options.
Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus.
A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply. In addition, RST pin is monitored as generating ?P reset manually.
Description
diymore 2PCS DS3231 AT24C32 IIC High Precision RTC Module Clock Timer Memory Module, without BatterySpecification:
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, disconnect the main power supply and maintains accurate timekeeping.
Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year.
This temperature sensor accuracy is 3 C. On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply.
If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.
Module parameters:
1. Size: 38mm (L) * 22mm (W) * 14mm (H)
2. Operating voltage :3.3 - 5 .5 V
3. clock chip: high-precision clock chip DS3231
4. Clock Accuracy :0-40 range, the accuracy 2ppm, the error was about 1 minute
5. calendar alarm clock with two
6. chip temperature sensor comes with an accuracy of 3
7. memory chips: AT24C32 (storage capacity 32K)
8. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
Note: Don't inclue battery, it only need 0.01 dollars, it's not safty to ship by air mail. So hope you can understand it.
Package Included:
2PCS* DS3231 AT24C32 IIC High Precision RTC Modules
6. diymore 5Pcs DS3231 AT24C32 IIC High Precision RTC Module Clock Timer Memory Board Beats DS1307 for Arduino
Feature
Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options.
DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.
Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus.
A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply. In addition, RST pin is monitored as generating ?P reset manually.
Description
diymore 5PCS DS3231 AT24C32 IIC High Precision RTC Module Clock Timer Memory Module, without BatterySpecification:
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, disconnect the main power supply and maintains accurate timekeeping.
Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year.
This temperature sensor accuracy is 3 C. On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply.
If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.
Module parameters:
1. Size: 38mm (L) * 22mm (W) * 14mm (H)
2. Operating voltage :3.3 - 5 .5 V
3. clock chip: high-precision clock chip DS3231
4. Clock Accuracy :0-40 range, the accuracy 2ppm, the error was about 1 minute
5. calendar alarm clock with two
6. chip temperature sensor comes with an accuracy of 3
7. memory chips: AT24C32 (storage capacity 32K)
8. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
Note: Don't inclue battery, it only need 0.01 dollars, it's not safty to ship by air mail. So hope you can understand it.
Package Included:
5PCS* DS3231 AT24C32 IIC High Precision RTC Modules
7. SunFounder PCF8563 IIC I2C Real Time Clock RTC and DS18B20 Temperature Sensor Module for Arduino Raspberry Pi
Feature
Integrates RTC PCF8563 and DS18B20 temperature sensor.Provides battery backup for continuous timekeeping; Low power consumption.
Complete clock calendar functions include second, minute, hour, day, date, month and year timekeeping, which provides valid time until the year 2100 with leap year compensation.
Supports PCF8563 I2C output and DS18B20 digital output, so you just plug the ports into Raspberry Pi to use.
Working voltage: 3.3V; Dimensions: approx. 14*13*15mm/0.55*0.51*0.59''.
Description
IntroductionThis mini-size Nano module integrates the PCF8563 RTC and DS18B20 temperature sensor. It works well with Raspberry Pi and Arduino, and you can just plug the 5-pin female header into the Raspberry Pi to use the module. Besides, it has low power consumption, and provides battery backup for continuous timekeeping.
For more information, refer to: http://wiki.sunfounder.cc/index.php?title=RTC-Nano
Package Included
1 x RTC Nano Module
8. 2pcs I2C RTC DS1307 AT24C32 Real Time Clock Module for Arduino AVR PIC 51 ARM
Feature
Two wire I2C interfaceHour : Minutes : Seconds AM/PM
Size: 28x27x8.4mm
Leap year compensation
Accurate calendar up to year 2100
Description
Description:100% Brand New
Two wire I2C interface
Hour : Minutes : Seconds AM/PM
Day Month, Date - Year
Size: 28x27x8.4mm
Leap year compensation
Accurate calendar up to year 2100
1Hz output pin
56 Bytes of Non-volatile memory available to user
DS1307 based RTC without LIR2032 battery
(Battery not included)
Package included:
2 pcs 24C32 Memory Arduino Tiny RTC I2C Module DS1307 Real Time Clock Module
9. WINGONEER 5Pcs Tiny RTC I2C DS1307 AT24C32 Real Time Clock Module For Arduino AVR PIC 51 ARM
Feature
DS1307 I2C real-time clock chip (RTC) 24C32 32K I2C EEPROM memory.The module comes fully assembled. CR2032 Battery include
Designed for Arduino tiny RTC.
Arduino-compatible; Note: This is not original Arduino product.it is only a substitute accessories from WINGONEER
Description
WINGONEER trademark Reg.NO:4747611WINGONEER 5Pcs Tiny RTC I2C DS1307 AT24C32 Real Time Clock Module For Arduino AVR PIC 51 ARM
Feature:
DS1307 I2C real-time clock chip (RTC) 24C32 32K I2C EEPROM memory.
The module comes fully assembled. CR2032 Battery include
DS1307 clock pin to the outside.
Designed for Arduino tiny RTC.
The DS1307 is accessed via the I2C protocol.
Two wire I2C interface.
Hour : minutes : seconds AM/PM.
Day month, date - year.
Accurate calendar up to year 2100.
1Hz output pin.
56 Bytes of non-volatile memory available to user.
Size: 2.8cm x 2.7cm.
Package Included:
5x WINGONEER DS1307 Module
10. WINGONEER 3Pcs Tiny DS3231 AT24C32 I2C Module Precision Real Time Clock Module For Arduino
Feature
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, disconnect the main power supply and maintains accurate timekeeping.
Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.
The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package. RTC maintains seconds, minutes, hours, day, date, month, and year information.
Note: This is not original Arduino product. it only a substitute accessories from WINGONEER
Description
WINGONEER trademark Reg.NO:4747611WINGONEER 3Pcs Tiny DS3231 AT24C32 I2C Module Precision Real Time Clock Module For Arduino
Feature:
Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options. The device integrates a very precise digital temperature sensor, through the I2C * interface to access it (as the same time). This temperature sensor accuracy is 3C. On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply. If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.
Module parameters:
1. Size: 38mm (length) * 22mm (W) * 14mm (height)
2. Weight: 8g
3. Operating voltage :3.3 - 5 .5 V
4. Clock chip: high-precision clock chip DS3231
5. Clock Accuracy :0-40 range, the accuracy 2ppm, the error was about 1 minute
6. Calendar alarm clock with two
7. Programmable square-wave output
8. Real time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation
9. Chip temperature sensor comes with an accuracy of 3C
10. Memory chips: AT24C32 (storage capacity 32K)
11. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
12. Can be cascaded with other IIC device, 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57
Package include:
3x WINGONEER Time Clock Module
