HIGHLY ACCURATE REAL TIME CLOCK MODULE RX8025T.
The real time clock is one of the basic components of most modern electronic devices, not to mention classic electronic clocks. In the world of hobby/maker electronics, the DS3231 reigned supreme for years, but unfortunately, lately it is hard to find and prices are unacceptable. Very often, cheap DS3231 available turn out to be a product significantly different from the declared parameters, the question is whether they are original products. An interesting alternative is the RX8025T whose accuracy is comparable to the old DS3231.
- Accuracy
- RX8025T UA – 5 seconds / month
- RX8025T UB – 10 seconds / month
- Built-in 32.768kHz DTCXO – digital temperature compensated crystal oscillator
- Backup battery power supply 3V CR1220
- Voltage range 1.8 – 5.5V
- I²C Bus
- Alarm, timer interrupt (INT output)
- Time update interrupt function (INT output)
- Every second
- Every minute
- FOUT – 32.768kHz, 1024Hz, 1Hz output
- FOE input “high” then FOUT “on”
- FOE “low” then FOUT “off”
CODING.
The sample program code has been prepared to show that the control is very simple and basic knowledge of the Arduino is enough.
- How to set and display the RTC date and time
- How to set and display the RTC date and time with the names of days of the week and months
- How to generate an interrupt by the RTC (INT output) every second or every minute and handle the interrupt
- How to generate square wave by the RTC (FOUT output) with preset frequencies: 32.768 kHz, 1024 Hz, 1Hz.
DATASHEET.
- RTC RX8025T Module – Schematic
- How to Use RTC RX8025T Module with Arduino
- Dedicated Arduino Library
- Datasheet summary
- Datasheet full
- Pinout
- Dimensions
HOW TO USE.
Example how to connect RTC RX8025T Module with Arduino.
- Module voltage power supply 1.8 – 5.5V
- I2C Bus connection required
- INT connection recommended
- FOE required only if FOUT is used
The available functions are described in sample program codes.
