m29dw641f STMicroelectronics, m29dw641f Datasheet - Page 78

• Manufacturer Part Number: m29dw641f
• Description: 64 Mbit 4mb X16, Multiple Bank, Boot Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

High voltage Block Protection
Figure 25. In-System equipment Chip Unprotect flowchart
1. Block Protection Groups are shown in
78/80
NO
ISSUE READ/RESET
COMMAND
RP = V IH
= 1000
FAIL
++n
YES
Appendix
A0, A2, A3 = V IL, A1 = V IH , A6 = V IL
A0, A2, A3 = V IL, A1 = V IH , A6 = V IL
D,
CURRENT GROUP ADDRESS
CURRENT GROUP ADDRESS
A0, A2, A3 = V IL, A1, A6 = V IH
A0, A2, A3, A6 = V IL, A1 = V IH
Table
NO
PROTECT ALL GROUPS
ANY ADDRESS WITH
ANY ADDRESS WITH
CURRENT GROUP = 0
READ DATA
ADDRESS =
DATA = 00h
WRITE 60h
ADDRESS =
28.
WRITE 60h
WRITE 40h
Wait 10ms
RP = V ID
Wait 4µs
START
n = 0
YES
ISSUE READ/RESET
COMMAND
RP = V IH
GROUP
PASS
LAST
YES
CURRENT GROUP
INCREMENT
NO
M29DW641F
AI07759c