current community

your communities

more stack exchange communities

Stack Exchange
tour help
Take the 2-minute tour ×
Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It's 100% free, no registration required.
up vote 0 down vote favorite

Can I use this programmer to program an onboard Atmega168 TQFP chip?

enter image description here

Does the board have to be powered up or the programmer supplies it's own +5v?

Here's what the programmer's schematic looks like.

enter image description here

share|improve this question
    
Don't know about the rest, but it seems that the board must be powered up; the programmer doesn't supply it's own 5V. –  m.Alin May 19 '12 at 8:40
add comment

2 Answers

up vote 4 down vote accepted

You'll have to power the board. The +5V connection shown on the connector comes from your board and is used as a pull-up for the reset signal: the 10k\$\Omega\$ resistor keeps reset high until it is pulled to a low level by the transistor.

The latest PCs are often no longer supplied with an EIA-232 interface. In that case this programmer may be an alternative.

share|improve this answer
    
The USBtinyISP is a great programmer. Found it more reliable than Atmel ones. –  Cybergibbons May 20 '12 at 10:56
add comment
up vote 0 down vote

USBASP is the best programmer and is very fast as compared to Serial ISP Programmer. I recommend you to use this one. Specially for big size Flash Microcontrollers.

Here is the link of USBasp

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.