arduino MCU port tiny45 tiny2313 GND GND 4 10 5V VCC 8 20 10 RESET 1 1 11 MOSI/SDA 5 17 12 MISO/DO 6 18 13 SCK/USCK/SCL 7 19 avrdude -cstk500v1 -P/dev/ttyUSB0 -b19200 -p attiny2313