128Mb, 256Mb, 512Mb, 1Gb StrataFlash Memory
Flowcharts
Figure 47: Protection Register Programming Procedure
Start
Write 0xC0,
PR address
(Program setup)
(Confirm data)
Write PR
address and data
Read status
register
0
SR7 =
1
Full status check
(if desired)
Program
complete
Bus
Operation
Command Comments
WRITE
PROGRAM PR Data = 0xC0
SETUP
Address = First location to program
WRITE
PROTECTION Data = Data to program
PROGRAM Address = Location to program
READ
Idle
None
None
Status register data
Check SR7
1 = Write state machine ready
0 = Write state machine busy
1. PROGRAM PROTECTION REGISTER operation addresses must be within the protection
register address space. Addresses outside this space will return an error.
Notes:
2. Repeat for subsequent PROGRAM operations.
3. Full status register check can be done after each PROGRAM operation or after a se-
quence of PROGRAM operations.
4. Write 0xFF after the last operation to set to the read array state.
PDF: 09005aef8448483a
128_256_512_65nm_g18.pdf - Rev. F 8/11 EN
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