Here we go.... (48G fixing and MEMORY UPGRADE)

[lemontea]

The pinouts are a bit different. Will it be OK?

The original RAM chip has only 28 pins, so I am guessing the extra 4 pins on the 32 pin chip will be ignored?

I got the new part info from

http://www.finetune.co.jp/~lyuka/interes...hp48g.html

(Note that he has a typing mistake on the Web page for the Part # of the RAM chip. I checked the photograph of the chip itself for the Part #).

But the datasheet for the Cypress says it is NOT suitable for CMOS level, and only TTL level.

The existing RAM chip (on the 48G that I opened) is a Winbond CMOS chip.

UPDATE: The Datasheet on the Winbond says it is TTL compatible even though it is a CMOS chip. So, should be good.