km29u128t Samsung Semiconductor, Inc., km29u128t Datasheet - Page 12

• Manufacturer Part Number: km29u128t
• Description: 16m X 8 Bit Nand Flash Memory
• Manufacturer: Samsung Semiconductor, Inc.

Pointer Operation of KM29U128
Table 1. Destination of the pointer
Table 2. Pointer Status after each operation
* 01H command is valid just one time when it is used as a pointer for program/erase.
KM29U128T, KM29U128IT
The KM29U128 has three read modes to set the destination of the pointer. The pointer is set to "A" area by the "00h" command, to
"B" area by the "01" command, and to "C" area by the "50h" command. Table 1 shows the destination of the pointer, and figure 2
shows the block diagram of its operations.
(1) "A" area program
(2) "B" area program
(3) "C" area program
Example of Pointer Operation programming
Program/Erase
Reset
Power up
Command
00H
01H
50H
Operation
50h
00h
00h
Pointer position
256 ~ 511 byte
512 ~ 527 byte
0 ~ 255 byte
"C" area
"A" area
"A" area
00h
01h
50h
"A" area
"B" area
"C" area
2nd half array(B)
1st half array(A)
spare array(C)
Area
80h
80h
80h
With previous 01H, Device is set to 00H Plane*
With previous 00H, Device is set to 00H Plane
With previous 50H, Device is set to 50H Plane
Address / Data input
Address / Data input
Address / Data input
Pointer status after operation
12
"00h" Plane("A" area)
"00h" Plane("A" area)
Pointer select
commnad
(00h, 01h, 50h)
Figure 2. Block diagram of pointer Operation
10h
10h
10h
"A" area program
"B" area program
"C" area program
(00h plane)
256 Byte
"A" area
"A"
80h
80h
80h
Pointer
FLASH MEMORY
Address / Data input
Address / Data input
Address / Data input
(01h plane)
256 Byte
"B" area
"B"
10h
10h
10h
(50h plane)
16 Byte
"C" area
"A" area program
"A" area program
"C" area program
"C"
Internal
Page Buffer