m29f040 STMicroelectronics, m29f040 Datasheet - Page 25

• Manufacturer Part Number: m29f040
• Description: 4 Mbit 512kb X8, Uniform Block Single Supply Flash Memory
• Manufacturer: STMicroelectronics

Figure 13. Block Protection Flowchart
ADDRESS: A0, A6 = V IL , A1 = V IH and
A16, A17, A18 DEFINING BLOCK
READ DQ0 at PROTECTION
BLOCK ADDRESS
on A16, A17, A18
G, A9 = V ID ,
Wait 100µs
A9 = V IH
Wait 4µs
Wait 4µs
W = V IH
W = V IL
G = V IH
START
E = V IL
PASS
n = 0
DQ0
= 1
YES
NO
A9 = V IH
FAIL
= 25
++n
YES
AI01368D
NO
M29F040
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