K9F2808U0B-YCB0,YIB0
K9F2808Q0B-DCB0,DIB0
K9F2808U0B-VCB0,VIB0 K9F2808U0B-DCB0,DIB0
FLASH MEMORY
Pointer Operation of K9F2808X0B
Samsung NAND Flash has three address pointer commands as a substitute for the two most significant column addresses. ’ 00h’
command sets the pointer to ’ A’ area(0~255byte), ’ 01h’ command sets the pointer to ’ B’ area(256~511byte), and ’ 50h’ command sets
the pointer to ’ C’ area(512~527byte). With these commands, starting column address can be set to somewhere of a whole
page(0~527byte). ’ 00h’ or ’ 50h’ is sustained until another address pointer command is entered. But, ’ 01h’ command is effective only
for one time operation. After any operation of Read, Program, Erase, Reset, Power_Up following ’ 01h’ command, the address
pointer returns to ’ A’ area by itself. To program data starting from ’ A’ or ’ C’ area, ’ 00h’ or ’ 50h’ command must be entered before ’ 80h’
command is written. A complete read operation prior to ’ 80h’ command is not necessary. To program data starting from ’ B’ area,
’ 01h’ command must be entered right before ’ 80h’ command is written.
"A" area
"B" area
"C" area
(00h plane)
(01h plane)
(50h plane)
256 Byte
256 Byte
16 Byte
Table 2. Destination of the pointer
Command
Pointer position
Area
00h
01h
50h
0 ~ 255 byte
256 ~ 511 byte
512 ~ 527 byte
1st half array(A)
2nd half array(B)
spare array(C)
"A"
"B"
"C"
Internal
Page Register
Pointer select
commnad
(00h, 01h, 50h)
Pointer
Figure 4. Block Diagram of Pointer Operation
(1) Command input sequence for programming ’ A’ area
The address pointer is set to ’ A’ area(0~255), and sustained
Address / Data input
Address / Data input
00h
80h
10h
00h
80h
10h
’ A’ ,’ B’ ,’ C’ area can be programmed.
’ 00h’ command can be omitted.
It depends on how many data are inputted.
(2) Command input sequence for programming ’ B’ area
The address pointer is set to ’ B’ area(256~512), and will be reset to
’ A’ area after every program operation is executed.
Address / Data input
Address / Data input
80h 10h
01h
80h
10h
01h
’ B’ , ’ C’ area can be programmed.
It depends on how many data are inputted.
’ 01h’ command must be rewritten before
every program operation
(3) Command input sequence for programming ’ C’ area
The address pointer is set to ’ C’ area(512~527), and sustained
Address / Data input
Address / Data input
80h 10h
50h
80h
10h
50h
Only ’ C’ area can be programmed.
’ 50h’ command can be omitted.
16
SAMSUNG [ SAMSUNG ]
