MAX32 stability issues with PICKIT3

[danmcb 3]

This is to let people know of an issue I discovered with MAX32 with PICKIT3 programmer,  that causes unreliable operation. 

 

http://www.mcbeeaudio.com/MAX32-PICKIT3-oscillation.html

Edited September 1, 2015 by JColvin
fixed link

[logansam 15]

This is to let people know of an issue I discovered with MAX32 with PICKIT3 programmer,  that causes unreliable operation. 

 

http://www.mcbeeaudio.com/MAX32-PICKIT3-oscillation.html

Edited September 1, 2015 by JColvin
fixed link

[LariSan 37]

Thank you so much for sending that over!I added your tutorial to the Max32 reference wiki and have asked someone to take a look at it.https://reference.digilentinc.com/chipkit_max32:refmanual#is_there_any_issue_with_using_the_pickit3_with_the_max32

[Cristian.Fatu 40]

I post here the answer we gave when you announced us about this:

 

There are some complex and historical design issues about the RTS / DTR and the cap. This is all part of the auto reset circuit. Originally RTS was part of that circuit and originally we loaded that 100 ohm resistor. Later we determined that hooking up RTS created problems it was just more reliable to remove the 100 ohm resistor. You will see on newer boards we do not connect RTS. DTR is critical to the auto reset functionality and is required for the proper operation of the board.