The circuit of download line for AT89S52

Published:2011/6/13 7:14:00 Author:Ariel Wang | Keyword: download line , AT89S52 | From:SeekIC

By analysing parallel port and programming time sequence,we made ISP download cable of MCU for AT89S5X. We make a brief introduction of parallel port and the connecting line of ACU. The pin of the parallel port of P2 is connected to P1.5'spin(MOSI) of MCU .The parallel port P10's pin is connected to P1.6's pin of MCU(MISO). The parallel port P1's pin is connected to P1.7's pin of MCU(SCK). The parallel port P17's pin is connected to RST's pin of MCU. See the chart above.



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