CH341A USB Programmer

PLD (programmable logic integrated circuits) - an electronic component used to create digital integrated circuits. Unlike conventional digital circuits, FPGA logic is not defined in the manufacture of, and is set by programming (design). Used for programming and programmers debug environment, allowing to set the desired structure in the form of a digital device schematic diagrams or program in a special language.

The most common architectures FPGAs are currently FPGA (Field-Programmable Gate Array) CPLD (Somplex Programmable Logic Device).

To FPGA programmer is characterized by programming via the JTAG interface with unlimited download firmware, as well as built-in diagnostics and debugging. FPGA programmer can program the FPGA matrix as is the main unit and Internally (programmers, manufactured by FlashPro-technology). These are the programmers last time received the greatest distribution.  

programmer ISP FPGA the standard port connects the PC directly to the board of the developed device.

Earlier manufacturers programmers did not adhere to a common standard, and focuses on a specific device. But gradually it became clear that  create a universal device that works with a software and allows you to program different types of chips from different manufacturers.

It was a programmer so BLS3 . BLS3 blaster is connected to the LPT-port of the computer has a small size, as compiled in the case of the standard 25-pin connector DB-25M. For he had developed a special software for operating systems DOS and Windows.

However, the issue of manufacturers of a new series of chips with 1.8 V supply, has demanded revision of output stages programmers. Revised circuitry released a new model - BLS5 . This programmer was able to work with the chips, which supply voltage range from 1.8 to 5 V.

But progress does not stand still. The widespread introduction of USB to computer technology has had an impact on programmers. Experience in the use BLS3 and BLS5 showed that "printer" port losing its way USB-interface and gradually disappears with PCs and laptops. This state of affairs required the development of new programming that would be connected to the USB-interface. It was developed and is called UltraBlaster (USBB) . This blaster is well established, but he did not have low-voltage output stages, allowing to work with the chips, the supply voltage is below 2.5 V. Revised scheme was released UltraBlaster II (USBB2) .

The use of FPGA programmer is not limited to programming for various types of microprocessors, ROM and the FPGA. Programmers have multiple interface lines, which can be configured to generate interface signals SPI, I2C, 1-wire and so forth. Therefore, it is possible to connect them, e.g. ADC chips having one of said interfaces, and thus, based on them simple devices, chips testers.