M29W640FT70N6E View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M29W640FT70N6E

64 Mbit (8Mb x8 or 4Mb x16, Page, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

M29W640FT, M29W640FB

Figure 18. In-System Equipment Group Protect Flowchart

START

n=0

RP = VID

WRITE 60h

ADDRESS = GROUP ADDRESS

A0, A2, A3, A6 = VIL, A1 = VIH

WRITE 60h

ADDRESS = GROUP ADDRESS

A0, A2, A3, A6 = VIL, A1 = VIH

Wait 100µs

WRITE 40h

ADDRESS = GROUP ADDRESS

A0, A2, A3, A6 = VIL, A1 = VIH

Wait 4µs

READ DATA

ADDRESS = GROUP ADDRESS

A0, A2, A3, A6 = VIL, A1 = VIH

9 Part Numbering

DATA NO

=

01h

YES

RP = VIH

ISSUE READ/RESET

COMMAND

PASS

++n NO

= 25

YES

RP = VIH

ISSUE READ/RESET

COMMAND

FAIL

2. Block Protection Groups are shown in Appendix A, Tables 20 and 21.

3. RP can be either at VIH or at VID when using the In-System Technique to protect the Extended Block.

AI11563

69/72

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