RTC moduuli

RTC moduuli vaikkapa arduino käyttöön. Toteutettu piirillä DS3231. Paristo ei mukana (CR2032) Tuote 107479. Netissä paljon ohjeita vaikkapa arduino käyttöön. Käyttöjännite 3.3 ... 5 VDC. Jos käytät ei ladattavaa 2032 paristoa, juota pois diodi joka on tuossa IC -piirin vieressä.

Features of the time module

• DS3231 real-time clock module
• Allows you to read the time in the form of hour, minute and second and the date: month day, year.
• The communication interface is the I2C bus (SDA and SCL lines)
• The data refresh rate is 1 Hz (1 second).
• Available data: Time: hour (AM, PM), minute, second, Date: month, day, year Accurate calendar up to the year 2100
• The module has goldpin leads, allowing it to be connected to any runner kit or dedicated circuit board using available wires.
• Compatible with arduino UNO and MEGA 2560
• Application for contact boards, runtime modules, arduino, etc.

Technical data of the module

• DS3231 real-time RTC clock module
• It has an AT24C32 memory
• Chip DS3231
• Power supply 2.3-5.5V
• Battery cage: CR2032 (not included)
• Current consumption: less than 200 nA
• SPI bus communication (SDA, SCL)
• Bus address: 0x68
• Communication interface: I2C
• Refresh rate: 1 Hz (1 second)
• Specifies: seconds, hours, minutes, months, days of the week and years
• Accuracy:
  • at 0 °C to +40 °C: +/- 2 ppm
  • at -40 °C to +85 °C: +/- 3.5 ppm
• Dimensions: 38x22mm

Connecting

• The 5 V supply voltage is connected to the pin marked with the same symbol.
• The I2C bus should be connected to the leads of the
  • SCL - clock line
  • SDA - data line.
• The SQW pin is the output of a rectangular signal with the selected frequency
• GND is the ground of the circuit.