Samsung KFN8GH6Q4M, KFKAGH6Q4M, KFM4GH6Q4M warranty PI Block Access mode entry Flow Chart

Models: KFN8GH6Q4M KFM4GH6Q4M KFKAGH6Q4M

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Flex-MuxOneNAND4G(KFM4GH6Q4M-DEBx)

 

Flex-MuxOneNAND8G(KFN8GH6Q4M-DEBx)

 

Flex-MuxOneNAND16G(KFKAGH6Q4M-DEBx)

FLASH MEMORY

3.12.1.1 PI Block Access mode entry

The PI area is a separate part of the NAND Flash Array memory. It is accessed by issuing PI Access command(66h) instead of writing a Flash Block Address(FBA) in the StartAddress1 register.

After being accessed through the PI Access Command, the contents of PI memory area can be programmed, erased or loaded using the same operations as a normal program, erase or load operation to the NAND Flash Array memory.

PI Block Access mode entry Flow Chart

Start

Write ‘DFS*, FBA’ of Flash1)

Add: F100h DQ=DFS*, FBA

Select DataRAM for DDP

Add: F101h DQ=DBS*

Write 0 to interrupt register2)

Add: F241h DQ=0000h

Write ‘PI Access’ Command

Add: F220h DQ=0066h

Wait for INT register low to high transition

Add: F241h DQ[15]=INT

PI Block Access mode entry completed

* DBS, DFS is for DDP

NOTE :

1)FBA(NAND Flash Block Address) could be omitted or any address.

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

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Page 87
Image 87
Samsung KFN8GH6Q4M, KFKAGH6Q4M, KFM4GH6Q4M warranty PI Block Access mode entry Flow Chart