Forum - MCS Electronics

 

FAQFAQ SearchSearch RegisterRegister Log inLog in

Fastest USB-ISP programmer

 
Post new topic   Reply to topic    www.mcselec.com Forum Index -> Various
View previous topic :: View next topic  
Author Message
Frankeman

Bascom Member



Joined: 11 Aug 2004
Posts: 945
Location: the Netherlands

netherlands.gif
PostPosted: Tue Jun 21, 2011 9:11 pm    Post subject: Fastest USB-ISP programmer Reply with quote

Hi,

I would like to know which type the fastest USB-ISP programmer is.
At the moment i use an USB-ISP prog1 from EMBUD.
Programming a M2560 with nearly all the flash (261776 of a total of 262144 bytes) takes 170 seconds.
This is approximately 1540 bits per seconds.

I would like to ask if you are willing to post the time your programmer needs to program a AVR.

Frank.
Back to top
View user's profile
hgrueneis

Bascom Member



Joined: 04 Apr 2009
Posts: 859
Location: A-4786 Brunnenthal

austria.gif
PostPosted: Sun Jul 10, 2011 6:41 am    Post subject: Reply with quote

Probably too late but the speed for programing in isp mode depends on the SPI clock maximum speed.
It can not (or should not) be more than max. cpu clock\4. You probably can not get much more speed from one with USB than an STK500 with RS232.
This automatically limits the speed of it since the AVRs are not really clocked fast (20 MHz max. on some).
Plus most of the spent time is the wait for the FLASH. USB will not significantly increase the speed.
Hubert
Back to top
View user's profile
Display posts from previous:   
Post new topic   Reply to topic    www.mcselec.com Forum Index -> Various All times are GMT + 1 Hour
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum