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Peripherals

List of on-board peripherals and chips for the various boards with a K210.

Sipeed M1(w) module

Also called "Dan" or "LicheeDan".

(source: https://www.twblogs.net/a/5bde1d0f2b717720b51b61a1)

  • K210 - CPU
  • GD25LQ128D - 128Mbit w25qxx Flash chip (seems hardwired on SPI3)
  • RY1303 - 3 Channel 5.5V 2A 1.5MHz DC/DC Step down PMU
  • PT8211 - DAC audio (I2S)

M1w only:

  • Espressif ESP8285 - WiFi module (serial, connected to FPIOA pin 6/7/8), this is a ESP8266 with built-in 1M flash

Maix Go

(source: schematic)

On-board

  • MSA300 - Accelerometer (I2C, address 0x26*)
  • STM32F103C8 - JTAG & UART, debug M1 without extra Jlink, this bypasses the CH340C on the module (USB to host, serial to K210)
  • OV2640 - Color CMOS UXGA (2.0 MegaPixel) CAMERA C HI (DVP, SCCB address 0x60)
  • MSM261S4030H0 - Microphone (I2S)

External

(source: schematic)

  • ST7789V - 240x320 262K Color Single-Chip TFT Controller/Driver with Frame Memory (SPI). Somewhat curiously the display is wired into 8-bit parallel mode (IM3=IM2=IM1=IM0=0, described in the datasheet as "8080-I Series MCU Parallel Interface"), and a special mode of the SPI peripheral called "OCTAL SPI" is used to interface with it. I don't think calling this SPI is entirely accurate.
  • NS2009 - 4-Wire Touch Screen Controller (I2C, address 0x48*)
  • TF card slot (SPI)

* Note regarding I2C addresses: the I2C peripheral automatically adds a LSB for read/write to the address, so 0x26 is and 0x4c and 0x4d, and 0x48 is 0x90 and 0x91.