hex16/ftflash

A tool for reading and writing data in SPI flash memory chips using a FT232H

FTFlash

FTFlash is a Windows application for reading and writing FLASH memory in SPI chips using a FT232H. A voltage regulator is required to step 5V down to 3.3V, but otherwise no external components are required. FTFlash allows for manual inspection of device information and reading/writing individual memory addresses as well as dumping/programming the entire memory to/from binary files on disk.

Wiring

The photo of my breadboard shows a 0.1 µF decoupling capacitor to ground placed the the 3.3V line next to the regulator. It's probably not mandatory, but is a good idea to include on the output rail of linear voltage regulators to smooth out high frequency noise on the the supply line.

AD0 - CLK
AD1 - MOSI -> DI
AD2 - MISO -> DO
AD3 - CS

Device and Memory Inspection

Full Chip Read/Write

Download FTFlash

• FTFlash.zip can be downloaded from the Releases page

Resources

• FtdiSharp

• W25Q32 Datasheet

• FT232H Breakout Board (Adafruit) has 3.3V built in and USBC

• FT232H Breakout Board (Amazon) is cheaper with Prime shipping but has a less convenient PCB layout and silkscreen