M58BW016BB ST Microelectronics, M58BW016BB Datasheet - Page 55

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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 27. Unlock Device and Erase a Tuning Protected Block Flowchart
Issue
Read
command
Add: don't care
Data: 0xFFh
DEVICE LOCKED
NO
Data: Second 32 bit
Data: First 32 bit
Add: don't care
Add: 0x00000h
Add: don't care
Add: 0x00001h
by tuning code
Device locked
Read Status
Data: 0x78h
Data: 0x78h
Register
b7 = 1
b7 = 1
b0 = 1
Reset
YES
YES
YES
DEVICE UNLOCKED
M58BW016BT, M58BW016BB, M58BW016DT, M58BW016DB
1st: Write Cycle
2nd: Write Cycle
(First part
of the tuning code)
3rd: Write Cycle
4th: Write Cycle
(Second part
of the tuning code)
TUNING PROTECTION
UNLOCK SEQUENCE
Add: block to erase
Add: don't care
Add: don't care
Status Register
Data: 0xD0h
Data: 0xFFh
Data: 0x20h
Erased
b7 = 1
check
Block
YES
Issue Read command
5th: Write Cycle
6th: Write Cycle
7th: Write Cycle
AI04502
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