M29W800DB70M1F View Datasheet(PDF) - Numonyx -> Micron

Part Name

Description

Manufacturer

M29W800DB70M1F

8-Mbit (1 Mbit x 8 or 512 Kbits x 16, boot block) 3 V supply flash memory

Numonyx -> Micron 

Block protection

M29W800DT, M29W800DB

Figure 19. Programmer equipment chip unprotect flowchart

START

PROTECT ALL BLOCKS

n=0

CURRENT BLOCK = 0

A6, A12, A15 = VIH(1)

E, G, A9 = VID

Wait 4µs

W = VIL

Wait 10ms

W = VIH

E, G = VIH

ADDRESS = CURRENT BLOCK ADDRESS

A0 = VIL, A1, A6 = VIH

E = VIL

Wait 4µs

G = VIL

Wait 60ns

Read DATA

INCREMENT

CURRENT BLOCK

NO ++n

= 1000

YES

A9 = VIH

E, G = VIH

FAIL

NO DATA YES

=

00h

LAST NO

BLOCK

YES

A9 = VIH

E, G = VIH

PASS

AI03470

48/52

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