m58lw064c STMicroelectronics, m58lw064c Datasheet - Page 52

• Manufacturer Part Number: m58lw064c
• Description: 64 Mbit 4mb X16, Uniform Block, Burst 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

M58LW064C
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 opera-
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tions.
Block Address
SR4, SR5 = 0
Read Status
Write D0h to
Write 20h
Register
SR7 = 1
SR3 = 0
SR5 = 0
SR1 = 0
Start
End
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Suspend
Erase to Protected
Sequence Error
V PEN 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 SR7 = 1
If SR3 = 1, V PEN invalid error:
– error handler
If SR4, SR5 = 1, Command Sequence error:
– error handler
If SR5 = 1, Erase error:
– error handler
If SR1 = 1, Erase to Protected Block Error:
– error handler
(A12-A17)
given execute suspend erase loop
AI00613C