FWH chip flashing with arduino

[luisao010]

I am trying to flash an old PC bios chip (Winbond W39V080FAPZ), and while it is compatible with Flashrom (in FWH mode), I cannot figure out how to program it using Arduino.

frser Arduino cannot detect it, and it shouldn't, due to the documentation saying it is pointed that the spi interface, uses 5 pins, and the chip I am programming needs 9 pins.

The datasheet for the chip is here

I already did the 5v to 3.3v voltage dividers, but I am quite lost right now.
I don't think I'm ready to write my flashing engine for FWH, but programming it with the mega using the standard multiplexer mode is a possibility (also challenging). Does anyone have a tip? It would be really really appreciated

I have a Mega and a UNO

[Railroader]

@luisao010

I already did the 5v to 3.3v voltage dividers

Can You post schemtics showing how things are wired and powered?

[luisao010]

Yes, I should've done it right from the start.

The 556 is just to illustrate. The chip is a plcc32 on a plcc-to-dip adapter. Vdd and Vss are connected to 3.3v and ground respectively.

This is the pin description for the chip:

I have all the FWH pins connected to the Arduino:

[luisao010]

Bumping the thread (Didn't found a solution yet)