This is bad news chaps. Unfortunately, Zetr0 was sold the wrong package of ZIP chip. He acquired MB814100A-70PZ parts & are NOT 1Mx4. They are infact 4Mx1.

Zetr0 was sent the wrong PDF Datasheet by some guy @ Fujitstu. - Meh!
Extended & huge apologies for wasting anyone's time.
Best Wishes,
Kin