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0 pointsThe_SamminAter2y ago0 comments

I have tried to use a generic usb CH341A previously, and ended up seemingly frying the chip. By chance, would you happen to know the pin out on the ch341a, or something else that may be useful? I’ve stayed away from using it since, out of fear of frying a more expensive/important device.

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2 comments · 2 top-level

londons_explore2y ago

Different flash chips operate at different voltages. 1.8v, 3.3v are common.

Your programmer needs to operate at the same voltage as your target.

I assume if this programmer is designed as a dev tool, it probably has a jumper somewhere to set what voltage to operate at.

timschumi2y ago

The programmer that I bought was already wired up for 24 series and 25 series chips, so I assume the pinout matches whatever is in that respective datasheet.

The 25Q32BVSIG operates on 3.3V, so this particular programmer was compatible by default, but for 1.8V one would have to watch out indeed.

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