M29F400FB55M3F2 Micron Technology Inc, M29F400FB55M3F2 Datasheet - Page 62

• Manufacturer Part Number: M29F400FB55M3F2
• Manufacturer: Micron Technology Inc

Specifications of M29F400FB55M3F2

• Cell Type: NOR
• Density: 4Mb
• Access Time (max): 55ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 19/18Bit
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: -40C to 125C
• Package Type: SO W
• Program/erase Volt (typ): 4.5 to 5.5V
• Sync/async: Asynchronous
• Operating Temperature Classification: Automotive
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Word Size: 8/16Bit
• Number Of Words: 512K/256K
• Supply Current: 20mA
• Mounting: Surface Mount
• Pin Count: 44
• Lead Free Status / Rohs Status: Compliant

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Figure 27. Programmer Equipment Block Protect Flowchart
Address Inputs A19-A12 give the address of the block that is to be protected. It is imperative that they remain
During the Protect and Verify phases of the algorithm, Chip Enable E must be kept Low, V
stable during the operation.
ADDRESS = BLOCK ADDRESS
A0, A6 = V IL ,
G, A9 = V ID ,
Wait 100µs
Read DATA
E, G = V IH ,
Wait 60ns
E, G = V IH
Wait 4µs
A1 = V IH
Wait 4µs
A9 = V IH
W = V IH
W = V IH
W = V IL
G = V IL
E = V IL
E = V IL
START
DATA
n = 0
PASS
01h
=
YES
NO
E, G = V IH
A9 = V IH
= 25
FAIL
++n
YES
NO
IL
.
AI03469b