M58LW032 STMICROELECTRONICS [STMicroelectronics], M58LW032 Datasheet - Page 52

• Manufacturer Part Number: M58LW032
• Description: 32 Mbit 2Mb x16, Uniform Block, Burst 3V Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M58LW032A
Figure 25. Erase Flowchart and Pseudo Code
Note: 1. If an error is found, the Status Register must be cleared (Clear Status Register Command) before further Program or Erase oper-
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ations.
Block Address
Read Status
Write D0h to
b4, b5 = 0
Write 20h
Register
b7 = 1
b3 = 0
b5 = 0
b1 = 0
Start
End
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Suspend
Erase to Protected
Sequence Error
V PP Invalid
Block Error
Command
NO
Error (1)
Error (1)
Erase
YES
Suspend
Loop
Erase command:
– write 20h
– write D0h to Block Address
(memory enters read Status
Register after the Erase command)
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
(A12-A17)
given execute suspend erase loop
AI00613B