Fenrigrel You must first of all glance over the project here. Those ports can be used to output DATA and orders do other devices, or to read the state of a sensor, or a switch. Get Our Weekly Newsletter! A pulse of ns should be given. Thanku for ur explanation and code.
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Wichit Sirichote, kswichit kmitl. Introduction If you need more code spacefor your application, particularly for developing 89Cxx projects with Clanguage, the Easy-Downloader V2. Hardware Figure 1 shows the circuit diagramof Easy-Downloader V2. The 89C51 with ez P0 is for bi-directional data transferring.
P1 provides A0-A7,P2. Look at A14, our software uses P2. Programming mode selection is done by P3. See in ez The programming voltage shown a bit differentfrom version 1. I have tested, no problem so far. If you want to makea PCB, get the ez2. The components placement is shown in Figure2. Use a given programmer or availableEasy-Downloader write the hex file into the 89C The preprogrammed 89S with ez Note: EZ2 dos version can use only with old PC, or machine.
Example of using ez2 is shownin Figure 3. Nowfor the 89C51, 89C52 and 89C55, there is a signature byte, thus no longerneed to select memory size. The EZ will recognize how big the code memoryis. Just click Send Hexfile, everything will done automatically.
Download EZUploader V3. No problem with unsorted hex file. Automatically detect COM Port and programmer board. Using Easy-Downloader V1. Source code for sdcc Download the source code, ez52s. The new firmware enables Easy downloader V2. The signature checking was removed, user must know the size of code for a given chip, e. Since the new S series needs more bit for mode setting. So you have to move signal from pin 14 to pin 13 as shown above.
Download source code and intel hex file: EZ52ss. Contribution to Easy-Downloader V2. Connecting the Easy-Downloader V2. The adapter uses FTRL chip. The adapter provides 6-pins connector.
To interface it to the Easy-downloader, we needs only three pins, i. Connecting to the master chip serial port is simple. Have a look the new Easy-downloader with USB interface!
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