I always tried with the D in the begin and could not get anything usefull.
So some 24C04 should get me sorted, right?
EDIT:
Might not be that straight forward :/
I found another NEC document that specifies the D6254 as a 4Kbit(512 x
with a serial interface with four two control signals:
CE, CS, SCL, SDA
(2-wire BUS)
All the 24C04 that I can find don't have any CS pin, only WP and address pins.
This might be an unobtanium part actually.
And thanks for your help guys