M29DW323DB ST Microelectronics, M29DW323DB Datasheet - Page 47

• Manufacturer Part Number: M29DW323DB
• Description: 32 Mbit 4Mb x8 or 2Mb x16 / Dual Bank 8:24 / Boot Block 3V Supply Flash Memory
• Manufacturer: ST Microelectronics

Figure 23. In-System Equipment Chip Unprotect Flowchart
Note: Block Protection Groups are shown in Appendix D, Tables 21 and 22.
ISSUE READ/RESET
NO
COMMAND
RP = V IH
= 1000
FAIL
++n
YES
ADDRESS = CURRENT GROUP ADDRESS
ADDRESS = CURRENT GROUP ADDRESS
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
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
00h
=
YES
M29DW323DT, M29DW323DB
ISSUE READ/RESET
COMMAND
RP = V IH
GROUP
PASS
LAST
YES
CURRENT GROUP
INCREMENT
NO
AI05577
47/49