M50LPW040K1 Micron Technology Inc, M50LPW040K1 Datasheet - Page 31

• Manufacturer Part Number: M50LPW040K1
• Manufacturer: Micron Technology Inc

Specifications of M50LPW040K1

• Cell Type: NOR
• Density: 4Mb
• Access Time (max): 11/50ns
• Interface Type: Parallel/Serial
• Boot Type: Top
• Address Bus: 4/11Bit
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Package Type: PLCC
• Sync/async: Async/Sync
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8b
• Number Of Words: 512K
• Supply Current: 20mA
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Compliant

Figure 18. Block Erase Flowchart and Pseudo Code
Note: 1. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
Interface
Only
LPC
Write Block Address
Read Status
b4, b5 = 0
Write 20h
Register
& D0h
b7 = 1
b3 = 0
b5 = 0
b1 = 0
Start
End
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Suspend
Sequence Error (1)
Erase to Protected
Erase Error (1)
Block Error (1)
V PP Invalid
Command
NO
Error (1)
YES
Suspend
Loop
Block Erase command:
– write 20h
– write Block Address & D0h
do:
– read Status Register
– if Program/Erase Suspend command
while b7 = 1
If b3 = 1, V PP invalid error:
– error handler
If b4, b5 = 1, Command sequence error:
– error handler
If b5 = 1, Erase error:
– error handler
If b1 = 1, Erase to protected block error:
– error handler
(memory enters read Status Register after
the Block Erase command)
given execute suspend erase loop
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