M29W320ET STMICROELECTRONICS [STMicroelectronics], M29W320ET Datasheet - Page 44

• Manufacturer Part Number: M29W320ET
• Description: 32 Mbit (4Mb x8 or 2Mb x16, Boot Block) 3V Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M29W320ET, M29W320EB
Figure 23. In-System Equipment Chip Unprotect Flowchart
Note: Block Protection Groups are shown in
44/46
ISSUE READ/RESET
NO
COMMAND
RP = V IH
= 1000
FAIL
++n
YES
APPENDIX
ADDRESS = CURRENT GROUP ADDRESS
ADDRESS = CURRENT GROUP ADDRESS
A.,
A0 = V IL , A1 = V IH , A6 = V IH
A0 = V IL , A1 = V IH , A6 = V IH
A0 = V IL , A1 = V IH , A6 = V IH
A0 = V IL , A1 = V IH , A6 = V IH
PROTECT ALL GROUPS
Table 20.
CURRENT GROUP = 0
ANY ADDRESS WITH
ANY ADDRESS WITH
NO
READ DATA
WRITE 60h
WRITE 60h
WRITE 40h
Wait 10ms
RP = V ID
Wait 4µs
START
DATA
n = 0
and
00h
=
Table 21.
YES
ISSUE READ/RESET
COMMAND
RP = V IH
GROUP
PASS
LAST
YES
CURRENT GROUP
INCREMENT
NO
AI05577