Electronics > Repair
CH341A Serial Memory Programmer Power Supply Fix
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grantb5:
I just gave up for this very reason (software hard to find, sketchy sources, etc). There are at least 3 packages that I could find and it took a long time to find those. Keep in mind I didn't test any of them since I didn't have a CH341A dongle. I've since closed all those tabs, but AsProgrammer was one and CH341PAR.EXE was another.

I ordered a FlashCat and will report on my findings after I try it.
NiHaoMike:

--- Quote from: free_electron on June 09, 2022, 01:55:25 pm ---what software do people use on this ? i see lots of boards but no seller mentions the software. is there such a thing as a generic spi / i2c software as well ( not just targeting eeproms, but more general where you can rea/write anything or even sniff a bus ?

--- End quote ---
The free Flashrom program is very good.
https://www.flashrom.org/Flashrom
voltsandjolts:

--- Quote from: free_electron on June 09, 2022, 01:55:25 pm ---what software do people use on this ? i see lots of boards but no seller mentions the software. is there such a thing as a generic spi / i2c software as well ( not just targeting eeproms, but more general where you can rea/write anything or even sniff a bus ?

--- End quote ---

Apparently NeoProgrammer works great with it, although I've never used it myself.
The creator is posting the software on 4PDA which requires registration for downloading, but the russian captchas are a pain...so here is a link:
NeoProgrammer V2.2.0.10.zip
camber:
I bought a black CH341A and made the recommended modification. I measured pin28 and data lines, all have 3.3V.
I use Neoprogrammer V.2.2.0.10. I can read a chip, erase it, and verify it is blank but I can not write to it  |O
I checked with 3 different chips (BY25Q64, BY25D16, P25Q16H) and 2 computers (one Win10, the other Win11).
Every time I try to write, Neoprogrammer hangs (not responding) and CH341A disconnects (hear a sound, red light ON but yellow goes OFF).
Is CH341A faulty?

friskydingo:

--- Quote from: camber on July 21, 2022, 12:26:29 pm ---I bought a black CH341A and made the recommended modification. I measured pin28 and data lines, all have 3.3V.
I use Neoprogrammer V.2.2.0.10. I can read a chip, erase it, and verify it is blank but I can not write to it  |O
I checked with 3 different chips (BY25Q64, BY25D16, P25Q16H) and 2 computers (one Win10, the other Win11).
Every time I try to write, Neoprogrammer hangs (not responding) and CH341A disconnects (hear a sound, red light ON but yellow goes OFF).
Is CH341A faulty?

--- End quote ---

Check the datasheet for the chip you may need to lift a pin to disable write protect, happened to me with a tcon board for a tv.
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