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 

9 Part Numbering

M29W640FT, M29W640FB

Figure 19. In-System Equipment Chip Unprotect Flowchart

START

PROTECT ALL GROUPS

n=0

CURRENT GROUP = 0

RP = VID

WRITE 60h

ANY ADDRESS WITH

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

WRITE 60h

ANY ADDRESS WITH

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

Wait 10ms

WRITE 40h

ADDRESS = CURRENT GROUP ADDRESS

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

Wait 4µs

READ DATA

ADDRESS = CURRENT GROUP ADDRESS

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

INCREMENT

CURRENT GROUP

NO ++n

= 1000

YES

RP = VIH

ISSUE READ/RESET

COMMAND

FAIL

NO DATA YES

=

00h

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

LAST NO

GROUP

YES

RP = VIH

ISSUE READ/RESET

COMMAND

PASS

AI11564

70/72

Share Link: