Re: CH341a SPI / I²C programmer



I didn`t know about that. Thanks!



STJ, I know that, and even if the resistors put the voltage exactly on 1.8v the data input can be unreliable.
In a forum from my country lots (LOTS) of people are using this method for years.
Since this was a one time only and I needed to do it fast (I wasnt working since the BIOS got corrupted) I had to do try it.
And here in Brazil these adapters aren`t as cheap. The price of the adaptor is almost the price of the programmer. ...

Re: CH341a SPI / I²C programmer

Hi guys, I finally did it.

STJ, what I used was this:



You just need to put a 68OHm resistor in every pin expept on GND (pin 4).
This lower the voltage from 3.3 to 1.8.

About the programmer...
I was using the version 1.29 and 1.30 (witch support 1.8v chips), but I was probably doing the step-by-step wrong (watched lots of videos on how to use the software on youtube).
What I was doing was:
- Run the software in compatibility mode (Win XP SP3) and as admin;...

Re: New Members - please post your introductions here

Hi from Brazil!
Yeah... just bricked my motherboard... lets repair it!

Re: CH341a SPI / I²C programmer

Hi, does anyone have the programmer version 1.31 or up?
I`m trying to use it with a mx25u12873f (its a 1.8v chip) without success.
It reads, but when I verify it says:
"Chip Main Memory with the contents are in disagreement"
Or when I try to detect it says:
"Access violation at address 0097EA42. Read of address 0097EA42."

Does anyone could give me any light?