AT90CAN128 AST-CAN485 Bootloader Issues

Hello,

I have been having issues trying to flash my AST-CAN485 board with a byte mismatch. I believe it’s an issue with my bootloader. I am using the ATMEL ICE Programmer, and have verified my connections as per the AST-CAN485 documentation.


ASTCAN-485 ATMEL ICE

VCC 4

GND 2

RST 6

CLK 1

FTDI UART0 TX 3

FTDI UART0 RX 9

VCC External Power Supply

GND External Power Supply


My current issue is that I am getting a mismatch sync message, as a result of my system clock not being a strong enough signal.

As a result my Atmel Studio 7 can only register a 5v reading, but cannot get the board ID.

Has anyone come across this issue previously?

Thanks,

V