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Old 05-10-2018, 06:55 PM   #126
thiagottjv
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Join Date: May 2018
City & State: Recife
My Country: Brasil
I'm a: Knowledge Seeker
Posts: 4
Default 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;
- Detect (reads the info but with all Unknown);
- Selecting some chip with some specs like my chip;
- Read;
- Backup;
- Erase;
- Read (witch already gave me the "Chip Main Memory with the contents are in disagreement" error after Verify).

I even tried to Program after this steps, but without success.

What I end up using (witch worked) was the version 1.18
And I did these steps:
- DONT Run the software in compatibility mode (Win XP SP3) and as admin;
- Detect (reads the info but with all Unknown);
- Selecting some chip with some specs like my chip (The only one MXIC 16Mb was the MX25L12805D);
- Blank (instead of Erase - after this the Verify stoped showing the error and all run smoothly);
- Verify;
- Program;
- Verify (all worked out ).

After this my motherboard was live again (an Asrock after a "successful" bios upgrade ).

The version (and drivers) I used:
Attached Files
File Type: zip CH341A v1.18 and Drivers.zip (9.05 MB, 451 views)

Last edited by thiagottjv; 05-10-2018 at 07:02 PM.. Reason: Attaching file
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