Adafruit 24LC32 I2C EEPROM Breakout - 32Kbit / 4 KB - Stemma QT
If you want to store calibration values, MAC addresses, non-secure access tokens, or other unique identifiers, EEPROM storage is a great option.
Pinout
- VIN
Power input. Adafruit Learn says the onboard regulator accepts 3-5VDC and safely converts it down; power it at the same logic level as the microcontroller.
Type · powerVoltage · 3-5VDC input per Adafruit Learn pinouts - 3Vo
3.3V output from the onboard regulator. Adafruit Learn says up to 100mA can be taken from this pin.
Type · powerVoltage · 3.3V output, up to 100mA per Adafruit Learn pinouts - GND
Common ground for power and logic.
Type · groundVoltage · 0V - SCL
I2C clock line. Adafruit Learn says this pin is level shifted for 3-5V logic and has a 10K pull-up.
Type · i2cVoltage · 3-5V logic per Adafruit Learn pinouts - SDA
I2C data line. Adafruit Learn says this pin is level shifted for 3-5V logic and has a 10K pull-up.
Start wiring
I2C · SPI · 3-5VDC input per Adafruit Learn pinouts · 3.3V output, up to 100mA per Adafruit Learn pinouts
Confirm the data interface matches your host board.
Module pins: VIN, 3Vo, GND, SCL, SDA. Schematik maps them to your board in the app.
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