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ECROS Technology JTAG Adapter and ATmega162

2004-10-21 by Graham Davies

It has been reported that the ECROS Technology STK500 JTAG Adapter 
does not work with the STK500/ATmega162 combination.  This is because 
the STK500 adapter was designed for the ATmega16 and ATmega32.  The 
ATmega162 pins out the JTAG interface on different port bits.

This does not affect the AVR ICE-Cube itself. It will work with the 
ATmega162 (although I don't have one to prove this). The problem is 
with the free adapter that lets you connect a JTAG ICE interface to 
the STK500, which does not come with a JTAG port. If you have an 
ATmega162 in your own system and have correctly pinned out the JTAG 
interface, the ICE-Cube will work.

The STK500 adapter can be modifed to work with the STK500/ATmega162 
combination by cutting four traces and adding four wires. I will see 
if the person reporting the problem wants to try this and report 
back. In the meantime, although the ICE-Cube will work with any JTAG-
enabled Atmel MCU, the STK500 adapter supplied with it is for the 
ATmega16 and ATmega32 only.

Graham.
http://www.ecrostech.com

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