AND-Tech AVR Prog USB v2 Instrukcja obsługi - Strona 17

Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Kontroler AND-Tech AVR Prog USB v2. AND-Tech AVR Prog USB v2 17 stron. Programming device

11. Jumpers and LEDs description

Programmer's jumpers functions:

JP1 – programmer's programmed circuit power source (approx. 4.8V)

JP2 – Lowering work frequency of ISP, useful when a programmed microcontroller is clocked with 1MHz.

JP3 – HID mode

LED colours:

Green

–

programmer connected to power source

Red

–

programming

If a software error occurs after a zero signature is read by avrdude (Device signature =

0x000000), the reason might be the under-clocking or the programmed microcontroller

large delay Install a jumper no.2 on the programmer to lower SPI speed when

programming.

The problem may concern unused microcontrollers (fusebits SUT set for Atmega8

provides major starting delay. The source of under-clocking is a 1MHz generator).