最終更新:2024-12-09 (月) 13:00:40 (40d)
ESP32-S3/ピン配置
IO MUX and GPIO Matrix (GPIO, IO MUX)
- The ESP32-S3 chip features 45 physical GPIO pins. Each pin can be used as a general-purpose I/O, or be connected to an internal peripheral signal.
- Through GPIO matrix, IO MUX, and RTC IO MUX, peripheral input signals can be from any GPIO pin, and peripheral output signals can be routed to any GPIO pin. Together these modules provide highly configurable I/O.
- Note that the 45 GPIO pins are numbered from 0 ~ 21 and 26 ~ 48. All these pins can be configured either as input or output.
高速
- Supports some high-speed digital signals (SPI, JTAG, UART) bypassing GPIO matrix for better high-frequency digital performance.
- In this case, IO MUX is used to connect these pins directly to peripherals.
ESP32-S3/I2C
- For I2C, the pins used can be chosen from any GPIOs via the GPIO Matrix.
- Standard mode (100 kbit/s)
- Fast mode (400 kbit/s)
- Up to 800 kbit/s (constrained by SCL and SDA pull-up strength)
