M29W004B-100N1TR STMICROELECTRONICS [STMicroelectronics], M29W004B-100N1TR Datasheet - Page 27

• Manufacturer Part Number: M29W004B-100N1TR
• Description: 4 Mbit 512Kb x8, Boot Block Low Voltage Single Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Figure 15. All Blocks Unprotecting Flowchart
NO
A9 = V IH
= 1000
FAIL
++n
YES
E, A0 = V IL ; A1, A6 = V IH ; A9 = V ID
A13-A18 IDENTIFY BLOCK
NO
PROTECT STATUS
VERIFY BLOCK
A12, A15 = V IH
E, G, A9 = V ID
ALL BLOCKS
E, G = V IH
PROTECT
Wait 10ms
Wait 60ns
W = V IH
Wait 4µs
W = V IH
Wait 4µs
W = V IL
G = V IL
START
DATA
n = 0
00h
=
YES
Unprotect
A9 = V IH
Set-up
PASS
Verify
LAST
BLK.
M29W004T, M29W004B
YES
NO
BLOCK
NEXT
AI02100C
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