Go Down

Topic: HV (High Voltage) Programming (Read 5258 times) previous topic - next topic



I have had a bit of a search, but so far I cant find a High Voltage Programmer for AVR's, that is ideally USB interfaced.
Does anyone know of a good one?

From time to time I stuff up fuse bits or do something stupid, which is where a HV Programmer would be brilliant so I can recover the processor.

I have seen one that is specifically for DIP28's etc, however I want one with a standard ISP plug, so I can program 2560's etc.

Do these exist?


Actually just came across 2 not bad links, but still not ideally what I am after but they fix fuse bits, and could be easy to build/customize.





How bout in shield form?

Requires a functional Arduino of course.

I've never used it.  It looks nice though.

Coding Badly

"The HV Rescue Shield 2 is a high voltage parallel mode fuse programmer for Atmel AVR microcontrollers."


Yep that is the one I was referring to in the first post.
Still, very nice though.


The STK500 does HV programming, RS232 though and as I just found out doesn't directly support the Tiny84.

I've used it with 861s and 85s before though.

Rob Gray aka the GRAYnomad www.robgray.com


I want one with a standard ISP plug

You realize that for most of the AVR devices, "High voltage programming" is a parallel-mode thing for which the "standard ISP plug" is quite useless?  Only a small number of devices support a high-voltage serial programming mode (mostly the low-pin-count chips where it is common/necessary to disable the normal "reset" pin.)


Yeah the more I am reading the more I am finding out what I am wanting isnt actually possible.

Oh well, now its documented in the forum :)


In my "industrial Mega" design I allowed for the appropriate pins to be accessible and also to isolate the RST line so the 12v wouldn't kill anything.

I'd have to bodge up an adaptor with a few wires but at least HV programming would be doable with the chip in circuit.

Rob Gray aka the GRAYnomad www.robgray.com

Coding Badly

I was going to suggest a debugWIRE programmer but they are somewhat expensive (~$130 $60 - the AVR Dragon supports debugWIRE) and I don't think debugWIRE can be used to reset fuses (but, apparently, the Dragon can also do high-voltage programming).

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131