SCH

Hardware

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Programming

  • Programming Methods UPDI UPDI-dat, wiring = power supply + UPDI pin

Serial port sketch uploading via USB

  • arduino board file megaCoreX-dat
    • clock - internal 16MHz
    • BOD - BOD 2.6V
    • EEPROM retained
    • pinout - 32pin standard
    • reset pin - reset
    • bootloader - Optiboot UART2 alternative pins
    • programmer JTAG2UPDI

ref