16F690 and 24LC16B memory - can't WRITE 8 different bytes in a row

[flotulopex]

This is what I get with your suggestion:

EeCtrl=$a0 + 2 ;using block 1 ie 1<<1=2
    i2cwrite SDA,SCL,EeCtrl,0,[1,2,3,4,5,6,7,8]
EeWP = 1

Something is also even more confusing to me. As you wrote, the address has to be WORD sized - this is also stated in the DS.

In my code, I have it ("EeCtrl") as a BYTE. If I change it to a WORD, it doesn't make any difference.

Your last suggestion with a WORD sized EeCtrl var gives this result:




Maybe I'm messing things up in the I2CWRITE command because I understand it this way and both vars (EeCtrl and EeAddress) are looking to be BYTE long:



To be honnest, I don't get that thing with the WORD sized address...

[richard]

the closest eprom i have is a xc24c16 which is pretty similar


this works for me

    DEFINE OSC 8                 
 sda var portc.1 
  sck var portc.2
          TMP VAR byte[3]
        


       osccon=$70    '8 mhz
         ansel=0       'dig i/o
         CMCON0=7        ' compare off 
         trisa=%001110
         trisc=%111111


         serout2 porta.0,84, ["ready ",13,10]  
                               
     i2cwrite  sda,sck,$aa,$38,[1,30,52]     
      
 
   
    main: 
    






    i2cread sda,sck,$aa,$38,[str tmp \3 ] 


     serout2 porta.0,84, ["d " , #tmp[0] ,"," , #tmp[1] ,"," , #tmp[2] ,",",13,10]
     
   pause 4000 
   goto main

[flotulopex]

the closest eprom i have is a xc24c16...

Thank you very much Richard.

Unfortunately, even with your code example, it looks hopeless

I should be able to grab another identical chip (or maybe a 24LC64...) by tomorrow or the day after.