AVR High Voltage Programmer Known as HVProg

The HVProg project is a high voltage parallel programmer with the utilization of AVR microcontrollers for the purpose of disabling the RESET pin.

The original STK500 from Atmel has been redesigned to produce the HVProg without all components of a development board. Since it was based on the original Atmel schematics, its main goal was to keep all necessary functionality to program all available controllers in every programming mode that the STK500 supports.

The project was made into two versions and the first was the Basic Version which has separate connectors for the different programming modes. A stabilized 5V and 12V is required for the input voltage. The second is the Advanced Version which requires unstable input voltage of at least 15V AC or DC. Both versions use a 6-pin ISP interface. The Basic uses 10-Pin connector for ISP while the Advanced uses 20-pin to also connect with serial and parallel high voltage programming.

A real development board cannot be replaced by HVProg and there is no ESD protection on the design. The project has been tested only in 5V environments although the input voltage for Basic Version has been stabilized.

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