Samsung MUXONENAND A-DIE KFM2G16Q2A - Manual (Page 91)

MuxOneNAND2G(KFM2G16Q2A-DEBx)
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FLASH MEMORY
MuxOneNAND4G(KFN4G16Q2A-DEBx)
All Block Unlock Flow Diagram
* Samsung strongly recommends to follow the above flow chart
* * If any blocks are changed to locked-tight state, the all block unlock command will fail.
In order to use all block unlock command again, a cold reset is needed.
NOTE :
1) ‘Write 0 to interrupt register’ step may be ignored when using INT auto mode. Refer to chapter 2.8.18.1
Unlock All Block
Write ‘All Block Unlock’
Add: F220h
DQ=0027h
Wait for INT register
low to high transition
Add: F241h DQ[15]=INT
Command
completed
Write 0 to interrupt register 1)
Add: F241h DQ=0000h
Write ‘SBA’ of Flash
Add: F24Ch DQ=SBA(000h)
* DFS, DBS is for DDP
Add: F240h DQ[10]=0(pass)
Read Controller
Status Register
Add: F24Eh DQ[2:0]=US,LS,LTS
Read Write Protection Register
Write ’DFS*’, ’FBA’ of Flash
Add: F100h DQ=DFS, FBA
(DFS must be same)
Write ‘DFS*’, of Flash
Add: F100h DQ=DFS*
Select DataRAM for DDP
Add: F101h DQ=DBS*
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