m58bw32f STMicroelectronics, m58bw32f Datasheet - Page 70

• Manufacturer Part Number: m58bw32f
• Description: 16 Or 32 Mbit X32, Boot Block, Burst 3.3v Supply Flash Memories
• Manufacturer: STMicroelectronics

Flowcharts
Figure 28. Block Erase flowchart and pseudocode
1. If an error is found, the Status Register must be cleared before further Program/Erase operations.
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Write Block Address
Read Status
b4 and b5
Write 20h
Register
& D0h
b7 = 1
b3 = 0
b5 = 0
b1 = 0
Start
End
= 1
YES
YES
NO
YES
YES
NO
NO
YES
NO
NO
Suspend
Erase to Protected
Sequence Error
PEN Invalid
Block Error
Command
NO
Error (1)
Error (1)
Erase
YES
Suspend
Loop
Erase command:
– write 20h, Address 55h
– write Block Address
(memory enters read status
state after the Erase command)
do:
– read status register
if Erase command given execute
suspend erase loop
while b7 = 1
If b3 = 1, PEN 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
(A11-A19) & D0h
(E or G must be toggled)
M58BW16F, M58BW32F
AI08623d