m29f800dt STMicroelectronics, m29f800dt Datasheet - Page 35

• Manufacturer Part Number: m29f800dt
• Description: 8 Mbit 1mb X8 Or 512kb X16, Boot Block 5v Supply Flash Memory
• Manufacturer: STMicroelectronics

Figure 18. 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
Wait 10ms
E, G = V IH
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
PASS
LAST
YES
CURRENT BLOCK
M29F800DT, M29F800DB
INCREMENT
NO
AI03470
35/39