M29W320DB View Datasheet(PDF) - Numonyx -> Micron

Part Name

Description

MFG CO.

M29W320DB

32 Mbit (4Mbx8 or 2Mbx16, Non-uniform Parameter Blocks, Boot Block), 3V Supply Flash memory

Numonyx -> Micron 

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Block Protection

Figure 16. Programmer Equipment Block Protect Flowchart

START

ADDRESS = BLOCK ADDRESS

W = VIH

n=0

G, A9 = VID,

E = VIL

Wait 4µs

W = VIL

Wait 100µs

W = VIH

E, G = VIH,

A0, A6 = VIL,

A1 = VIH

E = VIL

Wait 4µs

G = VIL

Wait 60ns

Read DATA

M29W320DT, M29W320DB

DATA NO

=

01h

YES

A9 = VIH

E, G = VIH

PASS

++n NO

= 25

YES

A9 = VIH

E, G = VIH

FAIL

AI03469

50/56

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