AVR-ISP500-ISO Olimex Ltd., AVR-ISP500-ISO Datasheet - Page 12

• Manufacturer Part Number: AVR-ISP500-ISO
• Description: Programmers & Debuggers AVR PROGRAMMER 2MB FLASH 1000V
• Manufacturer: Olimex Ltd.

Specifications of AVR-ISP500-ISO

• Positions/sockets: 1
• Description/function: USB AVR Programmer
• Tool Type: Programmer
• Core Architecture: AVR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: AVR Studio
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

TROUBLESHOOTING GUIDE:
Button can now be released. The device will stay in boot loader mode until
it is power cycled.
All boot loaders implement the standard protocol XMODEM with CRC16 for
firmware update. User is free to use his favorite terminal client
(HyperTerminal, minicom, etc) to upload the firmware images taken from
our website. The serial port settings for the AVR-ISP500-ISO boot loader
are: 9600 baud/sec, 8 data bits, no parity, 1 stop bit. The AVR-ISP500-
TINY/MASS/NANO boot loaders implement a USB virtual serial port that is
baudrate agnostic.
As an alternative we provide a simple Windows GUI application for users
who don’t want to or cannot use terminal software.
After the firmware image is uploaded the target will blink the GREEN LED if
update was successful, otherwise it will blink RED LED if firmware image
was invalid or update was unsuccessful. Device stays in this state until it is
power cycled.
Problem: AVR Studio cannot find my programmer.
Probable causes and solutions:
Problem: Programming fails. Target AVR chip cannot enter programming
mode.
Probable causes and solutions:
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Look whether the programmer is listed in Device Manager under the
“Ports (COM & LPT)” section. If it's not there then check your USB
cables and hubs. Reinstall the driver.
Check that the green LED is constantly on.
programmer might be in firmware upgrade mode. Go to the firmware
upgrade section for more details.
Your serial port number might be too high. Check the manual
section “Installing drivers” for more information on assigning serial
port numbers. Also go to AVR Studio menu “Tools->Options” and set
the “Number of COM ports to try” field to at least 20.
Remove all applications that might be using or scanning your
computer's serial ports, including any serial port monitors. They
might mess up the STK500v2 communication between AVR Studio
and the programmer.
ISP frequency might be too high. Set the ISP frequency to well below
¼ of target MCU clock. Please note that the AVR MCU clock depends
on its fuses configuration.
Target power might not be stable enough or supply voltage might be
too low. Check your target board circuit Ensure that the used AVR
chip specifications match your supply voltage.
Target power supply VCC might not be connected to pin 2 of
ICSP6/10. Check your target board circuit.
The target AVR MCU might have fuses programmed for disabling SPI
ISP or selecting another programming method. In such case you'll
need a High Voltage Parallel programmer to unlock the chip.
The reset line cannot be pulled low by the programmer. Check your
schematic and ensure that only a weak pull-up (and possibly a
small capacitor) are connected to RESET. Otherwise, if the pull-up
a. RED on, GREEN off.
b. RED off, GREEN on.
c. RED off, GREEN off.
If not then the