HPR1V2 is an optional accessory for the PRESTO programmer. With it, you can use the PRESTO to program devices with supply voltage and logic levels between 1.2 and 3.3V (e.g., Xilinx CoolRunner-II).
The HPR1V2 pins are unidirectional; therefore this level shifter can be used, for example, with JTAG devices, but it's not intended for devices that need bidirectional pins like PIC processors.
Note: The HPR1V2 must be supplied with external supply voltage from the application; it cannot be supplied from the programmer. Never turn on the internal supply voltage from the programmer when the HPR1V2 is connected!
Download User's Guide (PDF file; 226KB)