USB to Serial FTDI cannot detect the EEPROM

[dann11]

I am trying to make an USB to Serial Converter, for my control card. My problem is that when I tried to load program from the USB to Serial it cannot detect the EEPROM. I have already checked the hardware connection and pinning, they are perfectly connected to each other. I am not sure what might gone wrong, if its the components itself, but then I also tried to replace the EEPROM and still have the same problem. I have also double check if it is the FTDI but I believe it is not, because its pins responded as expected, except for the Clock pin between the FTDI and the EEPROM, there is clock pulse present.

Have you encountered the same problem? How did you deal with it?

 

[KlausST]

Hi,

As so often:
* show us your schematic (don't tell it's like the datasheet example)
* show us your PCB layout
* an additional photo could be informative, too.

Klaus

 

[dann11]

Hi,

As so often:
* show us your schematic (don't tell it's like the datasheet example)
* show us your PCB layout
* an additional photo could be informative, too.


Klaus

I have attached the schematic and PCB layout for the FTDI and the EEPROM, and so as a screenshot of the FT_prog for the FTDI.. I am thinking right now the possibility of a damaged FTDI, i have tried to replace the EEPROM twice but get the same response;(at the EEPROM) there is No clock pulse at its CLK pin, both the Dout and Din are at High Pulse..

Just additional question, Does the FTDI automatically connects with its EEPROM or do I need to do it through a software application?
**broken link removed****broken link removed**

 

[FvM]

Sure you don't have rotated pinout 93LC46BX?

 

[dann11]

Sure you don't have rotated pinout 93LC46BX?

I have double checked all the pins and connections and everything are properly connected..