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1/ 16/2015 Programmer f or 89C51/52/ 55 89S51/52 ht tp: //www.kmi tl.ac.th/~kswi chi t/easy2/easy2.htm 1/ 6 Easy-Downloader V2.0 for ATMEL 89C51/52/55 89S51/52 Wichit Sirichote, [email protected] Build your own a programmer for writing intel-HEX file to the 89C51, 89C52 and 89C55, PCB file included, Window version UPLOADER EZ3, EZ3.1, modified source code with sdcc. updated firmware for 89S51 and 89S52! Introduction If you need more code spacefor your application, particularly for developing 89Cxx projects with Clanguage, the Easy-Downloader V2.0 is the answer. It's suitable and cheapwhich anyone can build easily. This version is capable of writing intel-HEXfile to a 89C51(4kB), 89C52(8kB) and 89C55(20kB). After compiling the sourcefile in Assembly or C then download the hex file to the chip directly byusing A:\>ez2 myfirst(.hex), say. Hardware Figure 1 shows the circuit diagramof Easy-Downloader V2.0. The 89C51 with ez52.hex receives a 9600 baud serialdata from PC and generates the appropriated signal applying to the ZIFsocket. P0 is for bi-directional data transferring. P1 provides A0-A7,P2.0-P2.6 for A8-A14. Look at A14, our software uses P2.6, while ATMELuses P3.0 instead. Programming mode selection is done by P3.4 to P3.7.See in ez52.c for details. The programming voltage shown a bit differentfrom version 1.1, Vpp pin needs only +5V and +12V and simply activatedby P3.3. The clock input pin X1 of the ZIF socket is derived from X2 withoutbuffering. I have tested, no problem so far. Figure1: Circuit Diagram of Easy-Downloader V2.0 Constructing the Board The prototype board may be builtusing universal PCB with point-to-point soldering. If you want to makea PCB, get the

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Page 1: Programmer for 89C51_52_55 89S51_52

8/10/2019 Programmer for 89C51_52_55 89S51_52

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mailto:[email protected]
http://chaokhun.kmitl.ac.th/~kswichit/easy2/ez2.pcb
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http://chaokhun.kmitl.ac.th/~kswichit/easy2/ez52.c
http://chaokhun.kmitl.ac.th/~kswichit/easy2/ez52.hex
http://chaokhun.kmitl.ac.th/~kswichit/easy2/ez2pcb.pdf
http://chaokhun.kmitl.ac.th/~kswichit/easy2/ez2.pcb
http://www.dunfield.com/
http://chaokhun.kmitl.ac.th/~kswichit/easy2/ez2.zip
http://www.fmi.cz/jak/prog.html#new
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http://chaokhun.kmitl.ac.th/~kswichit/easy2/easyprog/francisco.htm
http://chaokhun.kmitl.ac.th/~kswichit/kurnia/kurnia.html
http://chaokhun.kmitl.ac.th/~kswichit/EZ31.zip
http://chaokhun.kmitl.ac.th/~kswichit/EZ3.zip
http://chaokhun.kmitl.ac.th/~kswichit/easy1/easy.htm
http://chaokhun.kmitl.ac.th/~kswichit/ez4/ez4.html
http://chaokhun.kmitl.ac.th/~kswichit/ap275/ap275.htm
http://www.kmitl.ac.th/~kswichit/easy2/ez52ics.hex
http://www.kmitl.ac.th/~kswichit/easy2/ez52s.hex
http://www.kmitl.ac.th/~kswichit/easy2/EZ52ics.c
http://www.kmitl.ac.th/~kswichit/ez4/EZDL4.zip
http://www.kmitl.ac.th/~kswichit/easy2/EZ52s.c
http://www.icsi.com.tw/english/
http://www.kmitl.ac.th/~kswichit/sdcc/SDCC.zip
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http://www.kmitl.ac.th/~kswichit/USBEasy/USBEasy.html
http://www.kmitl.ac.th/~kswichit

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