Post Created date
AVR SPI and ISP
I have already tested all the other SPI circuits and can affort the permanent 1.5K load.
Thursday, 9 January 2014 - 12:08
AVR SPI and ISP
ahhh.....now I got you. hahahaha. Only one of the two AT45xxx is soldered on each PCB. I just gave the option of using an 8MBit or a 64MBit flash. Quote:No, I can't see anything...
Thursday, 9 January 2014 - 11:37
design question
That's true Ross.
Thursday, 9 January 2014 - 10:28
AVR SPI and ISP
Dear David, Thanks for your reply. I can confirm that all CS are desabled during the ISP. Because AT45DB081D run at 3.3V and ATMega run at 5V, I placed two voltage dividers and a...
Thursday, 9 January 2014 - 08:32
AVR SPI and ISP
Dear meslomp, Thanks for your reply. D3 is used as an external clamping diode. Reading the datasheet/IO Ports unit, I see that all pins reset state is INPUT with Int. Pull ups...
Thursday, 9 January 2014 - 07:44
design question
Dear Kartman, Thanks for your reply. Just wanted a second opinion. Thanks a lot friend !!!
Thursday, 9 January 2014 - 07:39
components problem
Thank you guys. George, althought I have some samples of MMBT8050, I used a TH NPN (ZTX851). I don't know the PTC manufacturer. The component is really burned and I just can see...
Tuesday, 15 October 2013 - 07:07
components problem
I found the equ for the 8050 NPN. Now my only problem is what the "152H" marking code means for the PTC. Does anybody can help ?
Monday, 14 October 2013 - 15:58
Advice me a PCB CAD software
Altium Designer works just perfect !!!
Friday, 5 July 2013 - 12:45
ALTIUM mounting holes question
This cannot take place for my case for electrical reasons.
Thursday, 20 June 2013 - 05:22
ALTIUM mounting holes question
Hi guys, The problem is solved following meslomp's suggestion. Quote:you can also place a non plated hole if it does not have to be attached to the copper. place the hole and then...
Monday, 17 June 2013 - 07:28
ALTIUM mounting holes question
upppsssss..... I did this, but the Design Rule Check prompts me the same Violation. I am going to send the new GERBER to the manufacturer hoping for positive news this time.
Thursday, 13 June 2013 - 06:07

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