yours is MT46V32M16
so 32Mx16 -> 8Mbx16x4bank
-> adressing : A0-A9 for column adresse & A0-A12 for row adresse & BA0-BA1 for bank adresse
5B => PC3200 (3-3-3)
-> adressing : A0-A9 for column adresse (so 10pins)
-> adressing : A0-A12 for row adresse (so 13pins)
-> adressing : BA0-BA1 for bank adresse
You could start with these PDFs.
Thank you in advance!
you dont use it
(as for me - I do not see any difference between the two Micron's pinouts at all... The only difference to HY5DU281622ET is the A12 line - the pin 42...)
Your are right for A12 (pin42),
but , in your chip, pin 19 and 50 must be float, so if there are wired to ground or Vdd, it s bad for stability but can work.
so 8Mx16 -> 2Mbx16x4bank
-> adressing : A0-A8 for column adresse (so 9pins) => maybe changed by software to adresse A9 **
-> adressing : A0-A11 for row adresse (so 12pins) => We must have A12 wired to CPU :/
-> adressing : BA0-BA1 for bank adresse => OK
** That explain why you can have 32M.
In fact in the original chip, you can adresse 2^(9x12)=2Mb
with your chip, you can adresse 2^(10x12)=4Mb
A12 is missing to have 2^(10x13)=8Mb
To conclude : tomorrow, if possible, I 'll remove Chip Ram to see a wire under Pin42. If there is not.... you are going to be F...d :(
If there is, maybe a soft modification will be possible to adresse 8Mb :D
(Last edited by $@m on 23 May 2007, 13:21)