m29dw640f Numonyx, m29dw640f Datasheet - Page 72

• Manufacturer Part Number: m29dw640f
• Description: 64 Mbit 8mb X8 Or 4mb X16, Multiple Bank, Page, Boot Block 3v Supply Flash Memory
• Manufacturer: Numonyx

Block protection
Figure 23. In-System Equipment Chip Unprotect flowchart
1. Block Protection Groups are shown in
72/74
NO
ISSUE READ/RESET
COMMAND
RP = V IH
= 1000
FAIL
++n
YES
Appendix 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
A0, A2, A3 = V IL, A1, A6 = V IH
A0, A2, A3 = V IL, A1, A6 = V IH
,
Table 24
NO
PROTECT ALL GROUPS
ANY ADDRESS WITH
ANY ADDRESS WITH
CURRENT GROUP = 0
ADDRESS =
DATA = 00h
WRITE 60h
READ DATA
ADDRESS =
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
M29DW640F
AI07759