M29W040-100N6TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M29W040-100N6TR

4 Mbit (512Kb x8, Uniform Block) Low Voltage Single Supply Flash Memory

STMicroelectronics 

M29W040

Figure 13. Block Protection Flowchart

START

BLOCK ADDRESS

on A16, A17, A18

n=0

G, A9 = VID,

E = VIL

Wait 4µs

W = VIL

Wait 100µs

W = VIH

G = VIH

Wait 4µs

READ DQ0 at PROTECTION

ADDRESS: A0, A6 = VIL, A1 = VIH and

A16, A17, A18 DEFINING BLOCK

DQ0 NO

=1

YES

A9 = VIH

PASS

++n NO

= 25

YES

A9 = VIH

FAIL

AI01368D

24/31

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