M29W320DB70N6(2008) 查看數據表（PDF） - Numonyx -> Micron

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M29W320DB70N6
(Rev.:2008)

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

Numonyx -> Micron 

M29W320DT, M29W320DB

Figure 19. In-System Equipment Chip Unprotect Flowchart

START

PROTECT ALL BLOCKS

n=0

CURRENT BLOCK = 0

RP = VID

WRITE 60h

ANY ADDRESS WITH

A0 = VIL, A1 = VIH, A6 = VIH

WRITE 60h

ANY ADDRESS WITH

A0 = VIL, A1 = VIH, A6 = VIH

Wait 10ms

WRITE 40h

ADDRESS = CURRENT BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIH

Wait 4µs

READ DATA

ADDRESS = CURRENT BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIH

Block Protection

INCREMENT

CURRENT BLOCK

NO ++n

= 1000

YES

RP = VIH

ISSUE READ/RESET

COMMAND

FAIL

NO DATA

=

00h

YES

LAST NO

BLOCK

YES

RP = VIH

ISSUE READ/RESET

COMMAND

PASS

AI03472

53/56

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