m29dw640f Numonyx, m29dw640f Datasheet - Page 70

• 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 21. Programmer Equipment Chip Unprotect flowchart
1. Block Protection Groups are shown in
70/74
NO
E, G = V IH
A9 = V IH
= 1000
FAIL
++n
YES
Appendix D
NO
ADDRESS = CURRENT
A6, A12, A15 = V IH (1)
CURRENT GROUP = 0
,
GROUP ADDRESS
Table 24
A0, A2, A3 = V IL
E, G, A9 = V ID
PROTECT ALL
A1, A6 = V IH
DATA = 00h
Read DATA
Wait 60ns
Wait 4µs
Wait 10ms
GROUPS
E, G = V IH
START
Wait 4µs
W = V IH
E = V IL
W = V IL
n = 0
G = V IL
.
YES
E, G = V IH
A9 = V IH
GROUP
PASS
LAST
CURRENT GROUP
YES
INCREMENT
NO
M29DW640F
AI07757