®
Numonyx™ StrataFlash Embedded Memory (J3-65nm)
Figure 20: Block Lock Operations Flowchart
Start
No
Check Lock
Status ?
Command Cycle
- Issue Block Lock Setup Command
- Address = block address
- Data = 0x60
Yes
Command Cycle
- Issue Read Device ID Command
- Address = block base address + 0x2
- Data = 0x90
Data Cycle
- Issue Lock/Unlock Command
- Address = block address
- Data = 0x01 (Lock Block) -or-
0xD0 (Unlock Block)
Data Cycle
- Read Block Lock Status
Block Status
Unlocked
Locked
D1
0
D0
0
1
Read Status Register
See Status Register
Flowchart
0
Done
Yes
No
Error Handler
Errors ?
User-Defined Routine
Datasheet
60
December 2008
319942-02
NUMONYX [ NUMONYX B.V ]
