M29F800DT datasheet(35/39 Pages) STMICROELECTRONICS

Part #	M29F800DT

Description	8 Mbit (1Mb x8 or 512Kb x16, Boot Block) 5V Supply Flash Memory

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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M29F800DT, M29F800DB

Figure 18. Programmer Equipment Chip Unprotect Flowchart

PROTECT ALL BLOCKS

AI03470

A6, A12, A15 = VIH(1)

E, G, A9 = VID

DATA

W = VIH

E, G = VIH

ADDRESS = CURRENT BLOCK ADDRESS

A0 = VIL, A1, A6 = VIH

Wait 10ms

=

00h

INCREMENT

CURRENT BLOCK

n = 0

CURRENT BLOCK = 0

Wait 4µs

W = VIL

++n

= 1000

START

YES

NO

LAST

BLOCK

YES

NO

E = VIL

Wait 4µs

G = VIL

Wait 60ns

Read DATA

FAIL

PASS

A9 = VIH

E, G = VIH

A9 = VIH

E, G = VIH

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M29F800DT Datasheet(PDF) 35 Page - STMicroelectronics

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