- Extended PGIO port from P0 TO P16
- There are pins for VCC and GND beneath each I/O port with different colors
- Booster module added for VCC signal selection (P19 to P16, between 3.3V and 5V)
- UART port, I2C port and SPI port
- Among these ports, I2C port can connect 3 road I2C devices while SPI can connect 2 road SPI devices
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