kfm2g16q2a-deb8 Samsung Semiconductor, Inc., kfm2g16q2a-deb8 Datasheet - Page 115

• Manufacturer Part Number: kfm2g16q2a-deb8
• Description: 2gb Muxonenand A-die
• Manufacturer: Samsung Semiconductor, Inc.

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
MuxOneNAND2G(KFM2G16Q2A-DEBx)
MuxOneNAND4G(KFN4G16Q2A-DEBx)
Write ‘BSA, BSC’ of DataRAM
Write 0 to interrupt register
Add: F200h DQ=BSA, BSC
Write ‘DFS*, FBA’ of Flash
Add: F100h DQ=DFS, FBA
Add: F107h DQ=FPA, FSA
Write ‘FPA, FSA’ of Flash
Add: F240h DQ[10]=Error
Select DataRAM for DDP
Add: F241h DQ[15]=INT
Write ‘Load’ Command
Add: F241h DQ=0000h
low to high transition
Add: F101h DQ=DBS
Wait for INT register
DQ=0000h or 0013h
Status Register
Read Controller
Add: F220h
Start
1)
Write 0 to interrupt register
Add: F107h DQ=FPA, FSA
Write ‘Program’ Command
Write ‘FPA, FSA’ of Flash
Add: Random Address in
Add: F240h DQ[10]=Error
Add: F241h DQ[15]=INT
Add: F241h DQ=0000h
Read Interrupt register
low to high transition
Add: F241h DQ[6]=WI
Write ‘FBA’ of Flash
Add: F100h DQ=FBA
Wait for INT register
DQ=0080h or 001Ah
Random Data Input
Selected DataRAM
Read Controller
Status Register
Add: F220h
DQ[10]=0?
DQ[6]=1?
DQ=Data
YES
YES
- 115 -
NO
NO
NOTE :
1) ‘Write 0 to interrupt register’ step
Copy back Program Lock Error
Read Controller Status Register
may be ignored when using INT auto mode.
Copy back completed
(Refer to chapter 2.8.18.1)
Map Out
Add: F240h DQ[14]=Lock
DQ[10]=0?
‘Lock’ bit high
YES
FLASH MEMORY
Copy back Error
NO