Flex-MuxOneNAND4G(KFM4GH6Q4M-DEBx)

 

Flex-MuxOneNAND8G(KFN8GH6Q4M-DEBx)

 

Flex-MuxOneNAND16G(KFKAGH6Q4M-DEBx)

FLASH MEMORY

All Block Unlock Flow Diagram

Start

Write ‘DFS*, of Flash

Add: F100h DQ=DFS*

Select DataRAM for DDP

Add: F101h DQ=DBS*

Write ‘SBA’ of Flash

Add: F24Ch DQ=SBA(000h)

Write 0 to interrupt register1)

Add: F241h DQ=0000h

Write ‘All Block Unlock’

Command

Add: F220h

DQ=0027h

Wait for INT register low to high transition

Add: F241h DQ[15]=INT

Read Controller Status

Register

Add: F240h

DQ[10]=Error

DQ[10]=0?

YES

All Block Unlock

completed

* DBS, DFS is for DDP

NO

All Block Unlock Failed2)

*Samsung strongly recommends to follow the above flow chart

NOTE :

1)‘Write 0 to interrupt register’ step may be ignored when using INT auto mode. Refer to chapter 2.8.18.1

2)All Block Unlock command fails if there are lock-tight blocks in flash.

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Samsung KFKAGH6Q4M, KFN8GH6Q4M, KFM4GH6Q4M warranty All Block Unlock Completed