M29W640GT70NA6F NUMONYX, M29W640GT70NA6F Datasheet - Page 87

• Manufacturer Part Number: M29W640GT70NA6F
• Description: 64MB FLASH MEMORY
• Manufacturer: NUMONYX

M29W640GH, M29W640GL, M29W640GT, M29W640GB
Figure 28. In-system equipment chip unprotect flowchart
1. Block protection groups are shown in
ISSUE READ/RESET
NO
COMMAND
RP = V IH
= 1000
FAIL
++n
YES
ADDRESS = CURRENT GROUP ADDRESS
ADDRESS = CURRENT GROUP ADDRESS
Appendix
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
PROTECT ALL GROUPS
CURRENT GROUP = 0
ANY ADDRESS WITH
ANY ADDRESS WITH
NO
A, Tables
READ DATA
WRITE 60h
WRITE 60h
WRITE 40h
Wait 10ms
RP = V ID
Wait 4µs
START
DATA
n = 0
00h
=
28
YES
and 29.
ISSUE READ/RESET
COMMAND
RP = V IH
GROUP
PASS
LAST
YES
CURRENT GROUP
INCREMENT
NO
Block protection
AI11564
87/91