![]() Like many other low cost Chinese products this programmer uses knock off versions of Prolific USB chips. One is USB driver and second is lack of documentation. We have tried it and it works very well as an STK500 in latest Microchip Studio but there are 2 issues that let it down. This link was okay in January 2022 – AVR HVP v6.4Ĭhina post usually takes about 10-12 days to Europe or US but can take up to 4-5 weeks in rare circumstances. The latest version seems to be V6.4, which is green, has SMD components and a 28-pin SSOP Prolific USB chip. They vary in price from $20 to $30, with free shipping, but there are different versions with different colours. The best we have found is an AVR High Voltage Programmer, available from multiple sellers on AliExpress (search for AVR High Voltage Serial Programmer on ). Here are a few sketches that are available – AVR High Voltage Programmer or Arduino HV Programmer. There are 2 possible solutions we have found, a low cost Chinese programmer described below or build your own using an Arduino with some external circuitry, using STK500 interface. Nor does AVRISP-MKII but we are still asked to recommend a solution. ![]() ![]() Microchip seem to have completely ignored this issue and AVR ICE and other current tools do not support HVP. These just need a 12V pulse, see end of post. High Voltage Serial Programming is a separate programming method and this does not apply to newer ATtiny devices with a Tiny Programming Interface (TPI) such as ATtiny10. ![]() ![]() So, what is now the best solution for AVR High Voltage Programming? This was available on AVR Dragon, STK500 and STK600 but since these have been discontinued, there is a lack of suitable programmers. The only way to re-enable Reset or SPIEN fuses on some older AVR chips like ATtiny13A, to allow them to be reprogrammed, is to use High Voltage programming (HVP) method. ![]()
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