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docs/en/t_beam_supreme/t_beam_supreme_hw.md
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@ -136,6 +136,20 @@
| RTC (**PCF8563**) | 0x51 | ❌ (I2C Bus 1) | | RTC (**PCF8563**) | 0x51 | ❌ (I2C Bus 1) |
| Power Manager (**AXP2101**) | 0x34 | ❌ (I2C Bus 1) | | Power Manager (**AXP2101**) | 0x34 | ❌ (I2C Bus 1) |
> \[!IMPORTANT]
> If the I2C device is connected to pins 17 (SDA) or 18 (SCL)
> the sensor power supply must be connected to DC1. If connected to other LDOs
> the power must be turned on before accessing the sensor I2C bus
> otherwise, the I2C access will fail or freeze.
>
### BME280 Address
* If you need to change the BME280 device address, you can remove the resistor and then connect it to the fixed pad via a wire. This will change the device address to 0x76.
<a href="./images/BME.png" style="text-decoration: none; display: block;">
<img src="./images/BME.png" alt="T-A7670X-ESP32" width="200" style="border: 0;"/>
### ⚡ Electrical parameters ### ⚡ Electrical parameters
| Features | Details | | Features | Details |