AT89LP2052 and AT89LP4052 Parallel Port Programmer
This 2052 / 4052 programmer design uses the parallel programming mode via Parallel Port. Only parallel programming can re-enable the ISP Fuse. This programmer is also usefull if you need to write the user fuses to disable the XTAL Osc Bypass fuse - e.g. to test the LP2052 in existing 2051 hardware designs.
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MCS-51 projects
