m29f200t STMicroelectronics, m29f200t Datasheet - Page 28

• Manufacturer Part Number: m29f200t
• Description: 2 Mbit 256kb X8 Or 128kb X16, Boot Block Single Supply Flash Memory
• Manufacturer: STMicroelectronics

M29F200T, M29F200B
Figure 15. All Blocks Unprotecting Flowchart
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NO
A9 = V IH
= 1000
FAIL
++n
YES
E, A0 = V IL ; A1, A6 = V IH ; A9 = V ID
A12-A16 IDENTIFY BLOCK
NO
PROTECT STATUS
VERIFY BLOCK
A12, A15 = V IH
E, G, A9 = V ID
ALL BLOCKS
PROTECT
Wait 10ms
E, G = V IH
Wait 60ns
Wait 4 s
Wait 4 s
W = V IH
W = V IH
W = V IL
G = V IL
START
DATA
n = 0
00h
=
YES
Unprotect
A9 = V IH
Set-up
Verify
LAST
PASS
BLK.
YES
NO
BLOCK
NEXT
AI01996C