M29F800DB55N6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

M29F800DB55N6

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

STMicroelectronics 

Block protection

Figure 18. In-System Equipment Block Protect flowchart

START

n=0

RP = VID

WRITE 60h

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

WRITE 60h

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

Wait 100µs

WRITE 40h

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

Wait 4µs

READ DATA

ADDRESS = BLOCK ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

DATA NO

=

01h

YES

RP = VIH

ISSUE READ/RESET

COMMAND

PASS

++n NO

= 25

YES

RP = VIH

ISSUE READ/RESET

COMMAND

FAIL

M29F800DT

AI03471

50/53

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