I tested it with 24C02 I2C EEPROM (256 bytes). Use the toolbar buttons to read, write, erase and verify chip (hover the mouse cursor over them to see what the do). Click this and it will (probably) detect the chip type, without you needing to choose it from menu.ĪsProgrammer is now ready. If using SPI memory, there’s a question mark button on the main toolbar ( Read ID). Then go to IC menu and select the one that you fitted on programmer. In AsProgrammer main window, go to Hardware menu and select CH341a. It runs even on Windows XP.Ĭonnect the programmer to an USB port. The archive includes drivers and firmware for all supported programmers. The software is portable, no install needed. Therefore, it cannot be ported to Linux without code changes.ĭownload the release archive from GitHub and extract it. Looking at the source code, it is written in Pascal and, for the CH341A, it uses the native API, not libusb. NeoProgrammer is updated with more chips and new features and can be downloaded from 4pda forum only by registered users. Important! AsProgrammer is now released under a new name. I tested the utility with I2C EEPROM and SPI FLASH chips with success. The utility is released under MIT license and can be downloaded from GitHub – binary releases here. It comes with support for UsbAsp, AVRISP-MKII and CH341A programmers. It has been created by Alexander and it seems to exist since late 2011. Linux users have some command line tools, but Windows users had no open source software.ĪsProgrammer is a graphical interface tool that can read, erase and write serial memory chips. In spite of this, software tools for CH341A are not very easy to find. They even offer API for programmers who want to build software to talk to CH341A. The manufacturer of CH341A chip offers drivers for all operating systems. It can be interfaced with parallel ports, serial ports, I2C and SPI devices. One of the most used device is the MiniProgrammer. Program I2C and SPI memory chips with AsProgrammer utility on Windows.ĬH341A serial programmers are cheap and quite popular.

Ch341 programming software