Samsung KFN4G16Q2A, KFM2G16Q2A warranty Copy-Back Program Operation with Random Data Input, 115

MuxOneNAND2G(KFM2G16Q2A-DEBx)	FLASH MEMORY
MuxOneNAND4G(KFN4G16Q2A-DEBx)

3.12.1 Copy-Back Program Operation with Random Data Input

The Copy-Back Program Operation with Random Data Input in MuxOneNAND consists of 2 phase, Load data into DataRAM, Modify data and program into designated page. Data from the source page is saved in one of the on-chip DataRAM buffers and modified by the host, then pro- grammed into the destination page.

As shown in the flow chart, data modification is possible upon completion of load operation. ECC is also available at the end of load operation. Therefore, using hardware ECC of MuxOneNAND, accumulation of 1 bit error can be avoided.

Copy-Back Program Operation with Random Data Input will be effectively utilized at modifying certain bit, byte, word, or sector of source page to destination page while it is being copied.

Copy-Back Program Operation with Random Data Input Flow Chart

Start

Select DataRAM for DDP

Add: F101h DQ=DBS

Write ‘DFS*, FBA’ of Flash Add: F100h DQ=DFS, FBA

Write ‘FPA, FSA’ of Flash Add: F107h DQ=FPA, FSA

Write ‘BSA, BSC’ of DataRAM Add: F200h DQ=BSA, BSC

Write 0 to interrupt register1)

Add: F241h DQ=0000h

Write ‘Load’ Command

Add: F220h

DQ=0000h or 0013h

Wait for INT register low to high transition

Add: F241h DQ[15]=INT

Read Controller

Status Register

Add: F240h DQ[10]=Error

*DBS, DFS is for DDP (DFS must be same)

NO

DQ[10]=0? Map Out

YES

Random Data Input
Add: Random Address in
Selected DataRAM
DQ=Data
	DQ[10]=0?
Write ‘DFS, FBA’ of Flash	YES	NO
Add: F100h DQ=DFS, FBA
	Copy back completed	Copy back Error
Write ‘FPA, FSA’ of Flash
Add: F107h DQ=FPA, FSA
Write 0 to interrupt register
Add: F241h DQ=0000h
Write ‘Program’ Command
Add: F220h
DQ=0080h or 001Ah
Wait for INT register
low to high transition
Add: F241h DQ[15]=INT
Read Interrupt register
Add: F241h DQ[6]=WI
NO	Read Controller Status Register
DQ[6]=1?	‘Lock’ bit high
YES	Add: F240h DQ[14]=Lock
Read Controller
Status Register
Add: F240h DQ[10]=Error	Copy back Program Lock Error

NOTE :

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

- 115 -