Security Bit; Figure 3.7 Flowchart Of Security (1) - Toshiba TXZ Reference Manual

3.3.4. Security bit

2018-06-05
Start
[FCSR0]
<RDYBSY>=1？
Set [FCBMR]<SMB>
Select AERA0 by [FCAREASEL]<AREA0>
[FCAREASEL]
<SSFn>
Yes
Automatic security bit programming command sequence,
Automatic security bit erasing command sequence
(Refer to figure 3.8)
[FCSR0]
<RDYBSY>=0？
Yes
[FCSR0]
<RDYBSY>=1？
Yes
Release AREA0 by [FCAREASEL]<AREA0>
[FCAREASEL]
<SSFn>=0
Security end

Figure 3.7 Flowchart of security (1)

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No
No
1
=
？
No
No
No
？
TXZ Family
Flash Memory
Rev. 2.0