M29DW323DB90N6F データシートの表示（PDF） - STMicroelectronics

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M29DW323DB90N6F

32 Mbit (4Mb x8 or 2Mb x16, Dual Bank 8:24, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

M29DW323DT, M29DW323DB

Figure 22. In-System Equipment Group Protect Flowchart

START

n=0

RP = VID

WRITE 60h

ADDRESS = GROUP ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

WRITE 60h

ADDRESS = GROUP ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

Wait 100µs

WRITE 40h

ADDRESS = GROUP ADDRESS

A0 = VIL, A1 = VIH, A6 = VIL

Wait 4µs

READ DATA

ADDRESS = GROUP 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

Note: Block Protection Groups are shown in Appendix D, Tables 21 and 22.

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AI05576

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