M29F100 データシートの表示（PDF） - STMicroelectronics

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M29F100

1 Mbit (128Kb x8 or 64Kb x16, Boot Block) Single Supply Flash Memory

STMicroelectronics 

M29F100T, M29F100B

Figure 14. Block Protection Flowchart

Set-up

Protect

Verify

START

BLOCK ADDRESS

on A12-A15

W = VIH

n=0

G, A9 = VID,

E = VIL

Wait 4µs

W = VIL

Wait 100µs

W = VIH

E, G = VIH

VERIFY BLOCK PROTECTION

A0, A6 = VIL; A1 = VIH; A9 = VID

A12-A15 IDENTIFY BLOCK

E = VIL

Wait 4µs

G = VIL

Wait 60ns

VERIFY BLOCK

PROTECT STATUS

DATA NO

=

01h

YES

A9 = VIH

PASS

++n NO

= 25

YES

A9 = VIH

FAIL

AI01984C

24/30

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