I don't know if this will help you, but you might have a look. I have
implemented some code for accessing the I2C version of Ramtron's
FM24C256 EEProm. You can download the code at the ZBasic Files forum at http://www.zbasic.net/forum/ Look for the topic "My FRAM module
routines" Just download the routines and see if they are helpful. ZBasic
is compatable with BasicX at this code level.
Reply by Robotics_Job_Search●June 21, 20062006-06-21
Hello;
I had to replace my EEPROM about a year ago. Don't make the mistake I
made and try to put a 64K part in it's place; the control signals are
different for the 64K part and it won't work. I made a connector and ran
some wires to the circuitboard that the BX-24 was plugged in to and put a
DIP sized EEPROM there. Still works perfectly over a year later.
At 07:10 PM 6/21/2006, you wrote: >Hello,
>
>I am trying to access an ATMEL 24C512 EEPROM and am having quite a bit
>of difficulty. I think have everything wired correctly and the BX24
>seems to be sending out the correct pulses but I'm getting nothing
>back from the EEPROM. When I wait for it's acknowledgement, nothing
>happens. I am pulling up both SCL and SDA and the BX24 can pull them
>down but the memory never changes it.
>
>I have two of the chips and they both do the same thing so I don't
>know if I ruined both of them or if I'm just screwing something up.
>
>Anyone used one of these and have any words of wisdom or good write-
>ups? I can find a lot of info on SPI EEPROM but not two wire serial.
>
>Thanks in advance for any suggestions.
>
Reply by cfrysinger2000●June 21, 20062006-06-21
Hello,
I am trying to access an ATMEL 24C512 EEPROM and am having quite a bit
of difficulty. I think have everything wired correctly and the BX24
seems to be sending out the correct pulses but I'm getting nothing
back from the EEPROM. When I wait for it's acknowledgement, nothing
happens. I am pulling up both SCL and SDA and the BX24 can pull them
down but the memory never changes it.
I have two of the chips and they both do the same thing so I don't
know if I ruined both of them or if I'm just screwing something up.
Anyone used one of these and have any words of wisdom or good write-
ups? I can find a lot of info on SPI EEPROM but not two wire serial.