Adapter for microcontroller AT89C52-24JC. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Microcontrollers
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With the independent manufacture of an amateur radio frequency meter, described in the article by S. Zorin and N. Koroleva "Amateur radio frequency counter"(" Radio ", 2002, No. 6, pp. 28, 29), it is necessary to program the AT89C52-24JC microcontroller with the pinout according to the PLCC44 standard.
This can cause difficulties: in many "proprietary" programmers for the specified microcontroller, a panel for a microcircuit in the PDIP40 package is used. In such a case, an adapter is required, the correspondence between the contacts of which is shown in the figure.
It is not difficult to make such an adapter: you only need two corresponding sockets and about 2 m of M GTF wire. At the beginning, 40 pieces of wire 40 ... 50 mm long are prepared, one end of which is freed from insulation and tinned. Then, from foam or other porous insulating material, a plate 44 ... 8 mm thick is cut to the size of the PLCC10 socket, which is “pierced” onto its conclusions. The designated holes are expanded with a thick needle and, having passed the pieces of wire through them, the latter are soldered to the terminals, after which the plate is moved close to the back of the socket. In this case, additional insulation is not required, and the structure itself acquires a completely marketable appearance, while also providing sufficient mechanical rigidity.
The free ends of the wires are shortened in place, released from insulation, tinned, inserted into the holes of the PDIP40 socket and soldered in accordance with the pattern (from the middle to the edges). The adapter is ready. It remains to check the correctness of the connections, after which you can get to work.
Detailed information in English about the parameters of the microcontroller, its internal structure, signal diagrams in reading and programming modes can be found on the manufacturer's website on the Internet at .
Author: S. Kosenko, Voronezh
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