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Monday, October 29, 2018

ch341a ch341

ch341 xyron zyron


https://www.win-raid.com/t796f16-Guide-Using-CH-A-based-programmer-to-flash-SPI-EEPROM-5.html

I'd like to introduce another programmer application (flashrom) and driver for Windows, which i personally prefer over the default software.
I created a simple CH341A WinUSB driver, signed it and bundled it with a driver installer.

Download flashrom_windows.zip

Instructions:
Extract the provided archive and execute Install.cmd, it will automatically install the CH341A WinUSB driver and open a command shell to access flashrom.
Enter flashrom in the command shell to probe for the device and connected flash chips:
flashrom

Calibrating delay loop... OK.
Found Winbond flash chip "W25Q64.W" (8192 kB, SPI) on ch341a_spi.
No operations were specified.


To read data from the flash chip:
flashrom -r backup.bin

Calibrating delay loop... OK.
Found Winbond flash chip "W25Q64.W" (8192 kB, SPI) on ch341a_spi.
Reading flash... done.


To write data to the flash chip:
flashrom -w bios.bin

Calibrating delay loop... OK.
Found Winbond flash chip "W25Q64.W" (8192 kB, SPI) on ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... VERIFIED.


Changelog:
- Added CH341A patches from flashrom patchwork.
- Added support for FTDI and PICkit 2.
- Added timer and progress bar.
- Built from current staging branch.




ch341a schematic


 at45db161 SOP 8 pin