Sporadic bit errors when writing ATMEL 25256 SPI EEPROM
Posted by:
mark_melvin
()
Date: July 07, 2010 07:07PM
Hi There,
I have built my own SI Prog board and with the latest version of the software (on WinXP) using both the SI Prog API or SI Prog I/O drivers, I get errors when writing. It appears to be timing related. I have run the calibration but still have no luck. Reading seems to work fine, but I am not sure I am reading what is actually on the device either, I guess. If I do a diff of what I downloaded compared to what I read back, there are various bits off by one in the file.
I remember struggling with this years ago as well. Has anyone successfully built the serial -> SPI device? If so, are you using an external power supply? I am trying to run off the serial port power supply. Perhaps that has something to do with it?
Thanks in advance for any help,
Mark.