m29w400f Numonyx, m29w400f Datasheet - Page 49

• Manufacturer Part Number: m29w400f
• Description: 8-mbit 1 Mbit?8 / 512 Kbit?16 ; 4-mbit 512 Kbit?8 / 256 Kbit?16 Boot Block 3 V Supply Flash Memory
• Manufacturer: Numonyx

Figure 20. Programmer equipment block protect flowchart
ADDRESS = BLOCK ADDRESS
A0, A6 = V IL ,
G, A9 = V ID ,
Read DATA
E, G = V IH ,
Wait 100µs
E, G = V IH
Wait 60ns
A1 = V IH
A9 = V IH
Wait 4µs
Wait 4µs
W = V IH
W = V IH
W = V IL
G = V IL
START
E = V IL
E = V IL
DATA
PASS
n = 0
01h
=
YES
NO
E, G = V IH
A9 = V IH
FAIL
= 25
++n
YES
NO
AI03469
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