M58BW016BB ST Microelectronics, M58BW016BB Datasheet - Page 51

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M58BW016BB

Manufacturer Part Number
M58BW016BB
Description
16 Mbit 512Kb x32 / Boot Block / Burst 3V Supply Flash Memories
Manufacturer
ST Microelectronics
Datasheet

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Figure 23. Block Erase Flowchart and Pseudo Code
Note: 1. If an error is found, the Status Register must be cleared before further P/E operations.
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
M58BW016BT, M58BW016BB, M58BW016DT, M58BW016DB
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 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, 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
(A11-A18) & D0h
(E or G must be toggled)
AI03851
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