ChronoDot - Ultra-precise Real Time Clock
The ChronoDot V3 is the latest version of macetech’s popular ChronoDot line of products. Designed during the Great Chip Shortage, it uses the newly-released MAX31328 temperature-compensated real-time clock chip.
Pinout
- VCC
Main supply input for the ChronoDot when connected to a microcontroller; official macetech docs say VCC powers the module during controller use.
Type · powerVoltage · 2.3V to 5.5V DC per official macetech ChronoDot V3 documentation. - GND
Ground reference for the ChronoDot supply and I2C interface.
Type · groundVoltage · 0V - BAT
Battery node connected directly to the CR1632 cell; official docs say it can be used for an external battery or battery-health monitoring and must not be shorted.
Type · powerVoltage · 3V lithium CR1632 battery node per official macetech documentation. - SDA
I2C serial data line used to communicate with the ChronoDot RTC and onboard EEPROM.
Type · i2c - SCL
I2C serial clock line used to communicate with the ChronoDot RTC and onboard EEPROM.
Start wiring
I2C · SPI · 2.3V to 5.5V DC per official macetech ChronoDot V3 documentation. · 0V
Confirm the data interface matches your host board.
Module pins: VCC, BAT, GND, SDA, SCL. Schematik maps them to your board in the app.
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