M29W800DT NUMONYX [Numonyx B.V], M29W800DT Datasheet - Page 48

• Manufacturer Part Number: M29W800DT
• Description: 8-Mbit (1 Mbit x 8 or 512 Kbits x 16, boot block) 3 V supply flash memory
• Manufacturer: NUMONYX [Numonyx B.V]

Block protection
48/52
Figure 19. Programmer equipment chip unprotect flowchart
NO
E, G = V IH
A9 = V IH
= 1000
FAIL
++n
YES
ADDRESS = CURRENT BLOCK ADDRESS
PROTECT ALL BLOCKS
CURRENT BLOCK = 0
A0 = V IL , A1, A6 = V IH
A6, A12, A15 = V IH (1)
NO
E, G, A9 = V ID
Read DATA
E, G = V IH
Wait 10ms
Wait 60ns
Wait 4µs
Wait 4µs
W = V IH
W = V IL
G = V IL
START
E = V IL
DATA
n = 0
00h
=
YES
E, G = V IH
A9 = V IH
BLOCK
M29W800DT, M29W800DB
PASS
LAST
YES
CURRENT BLOCK
INCREMENT
NO
AI03470