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Friday, January 27, 2012

JTAG ICE MkII Pinout


So, you lucky soul, you have a JTAG ICE Mk II on the bench. And you're sick of trying to remember which squid cable wire color corresponds to MISO, MOSI, SCK, RESET, Vcc and GND for AVRISP / ISP (In System Programming)? Me too. Here's a table that should help both of us.

Squid
ISP
ATmega
Function
Squid
Pin #
Color
Function

ISP6
Pin #

328P
Pin
TCK 1BlackSCK319
GND 2WhiteGND68,22
TDO 3GreyMISO118
VTref 4PurpleVcc27
TMS 5Bluencncnc
nSRST 6GreenRESET51
Vsupply 7Yellowncncnc
nTRST 8Orangencncnc
TDI 9RedMOSI417
GND 10Brownncncnc


While we're at it, here's the 6-pin and 10-pin AVRISP (AVR ISP) pinouts for us to reference.



If you're using a 28-DIP ATmega328P, this may help. This should work for an ATmega8, ATmega168, and more (check the datasheet).


Sources:
http://redmine.ruinwesen.com/projects/golem-public/wiki/JTAG_ICE_MKII_pinouts
http://www.atmel.com/dyn/resources/prod_documents/doc2562.pdf

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