Posted by John on October 4, 2003, 14:27:23 Thanks in advance,
217.99.12.42
Hello,
I have built my own board based on 3068F MCU and I have tried to uplod a very simple test program to the MCU. Unfortunately, the program doesn't work as expected. SCI1 TxD and RxD are connected through MAX202 to a DB9 female plug. FWE is normally are tied to the GND through 10k resistror and MD2 to VCC through resistor of the same value. In order switch the MCU to the boot mode I connect FWE to VCC and MD2 to GND through 2x2 pin header and jumpers. I'm using FDT 2.2. It seems that FDT can connect and upload software to the MCU but I don't know what should I do next. I simply disconnect power supply and jumpers. Unfortunately, the software doesn't work, but it is almost impossible that there is a bug in software. It is too simple.
I would be greateful if somebody could send me circuit diagram of tested programming interface. Especially I am interested in handling of FWE and MD2 pins.
John
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