SMT-0540-S-R datasheet(21/38 Pages) ATMEL

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AT88CK109STK User Guide

4-1

8699A—CRYPTO—10/09

Section 4

Troubleshooting Guide

Table 4.

Troubleshooting Guide

Problem

Reason

Solution

The blue Power LED is not on.

USB Port of AT88Microbase is not

connected to PC.

Connect AT88Microbase USB port

to PC's USB port.

The JTAG header is not connected

to JTAG programmer.

Connect the JTAG header to the

JTAG programmer.

The memory lock bits are

programmed.

Erase the memory before

programmed.

Reset disable fuse is set.

Check reset disable fuse.

Programming too fast with ISP SPI

Check oscillator settings and make

sure it is not set higher than SPI

clock

USB Port of AT88Microbase is not

connected to PC (programmed

through USB).

Connect AT88Microbase USB port

to PC's USB port.

AT88Microbase is not in DFU mode.

― Press and hold the “HWB” push

button.

― Press the “RESET” push button.

― Release the “RESET” push

button.

― Release the “HWB” push button.

The AVR device cannot be

programmed.

The communication medium in FLIP

hasn't been selected

From the FLIP menu, select

“Settings > Communication > USB”.

AVR Studio does not detect

JTAG or ISP programmer.

JTAG or ISP programmer is not

connected or power is off.

Connect JTAG programmer to

JTAG header or ISP programmer to

ISP header and check power

connections.

FLIP program not working.

AT88Microbase is not in DFU mode.

JTAG to load the bootloader and set

(check) the HWBE fuse.

Correct fuse settings:

Reading fuses address 0 to 2..

0xDE, 0x99, 0xF3

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