Kit Modifications

ATmega4809 Xplained Pro has several components that can be used to disconnect I/O pins of the ATmega4809 from connectors and on-board ICs, and to disconnect power signals.

The table and figure below show components to modify connections to the EDBG and power supplies.

Table 1. Resistors
Designator Value From To Comment
J106 Cut-strap J100 pin 4 VCC_TARGET Power header VCC target disconnect
J204 Cut-strap Power supply mikroBUS™ 5V0 Cut to remove power from the mikroBUS™ header
J207 Cut-strap Power supply mikroBUS™ 3V3 Cut to remove power from the mikroBUS™ header
F100 PTC fuse 5V input (USB and External) VCC_P5V0 All external 5V power, EDBG USB and external 5V on J100 pin 1
R108 U100 OUT VCC_EDBG_P3V3 EDBG power supply
R504 EDBG DGI I2C SDA PC2 TWI0 SDA EDBG DGI I2C interface
R505 EDBG DGI I2C SCL PC3 TWI0 SCL
R509 EDBG TARGET RESET PF6 ATmega4809 RESET
R510 EDBG UPDI UPDI UPDI Programming/Debugging signal
R514 330Ω EDBG DGI GPIO0 PB2 EDBG DGI GPIO interface
R515 330Ω EDBG DGI GPIO1 PB3
R516 330Ω EDBG DGI GPIO2 PB4
R517 330Ω EDBG DGI GPIO3 PB5
R520 EDBG DGI SPI SS PF3 GPIO EDBG DGI SPI interface
R521 EDBG DGI SPI SCK PA6 SPI0 SCK
R522 EDBG DGI SPI MOSI PA4 SPI0 MOSI
R523 330Ω EDBG DGI SPI MISO PA5 SPI0 MISO
R526 330Ω EDBG CDC UART TX PC1 USART1 RxD EDBG CDC interface
R527 EDBG CDC UART RX PC0 USART1 TxD
Figure 1. Assembly Drawing Bottom