kfm2g16q2a-deb8 Samsung Semiconductor, Inc., kfm2g16q2a-deb8 Datasheet - Page 111
kfm2g16q2a-deb8
Manufacturer Part Number
kfm2g16q2a-deb8
Description
2gb Muxonenand A-die
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.KFM2G16Q2A-DEB8.pdf
(173 pages)
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3.11.3 2X Interleave Cache Program Operation
The 2X Interleave Cache Program is available only on DDP. Host can write data on a chip while programming another chip with this operation.
2X Interleave Cache Program is executed as following:
1. 4KB Data are written from host to DataRAMs in Chip1.
2. 2X Cache Program command issues. This will turn INT bit to busy state
3. 4KB data will be trasfered to each page buffer in two-plane NAND Flash Array at the same time.
4. While these data are transferring, Host can write another 4KB Data to DataRAM in Chip2.
5. When the transfer operation is completed, programming into NAND Flash Array will automatically start, and at the same time, INT bit will
6. Second 4KB is writable on Chip1 when INT1 goes to ‘1’.
7. When second 4KB is written to two DataRAMs of Chip1, another 2X Cache Program command is issued and INT1 bit will go to ‘0’
NOTE :
1) This is for INT auto mode, for INT manual mode case, user should write 0 to INT bit before issuing any command.
When INT bit goes to ‘1’ after second data transfer from DataRAMs to Page Buffers are completed, user may check the Status Register to
check the 2X program status. During 2X Cache Program, Plane1/2 previous bit shows the status of previous program operation.
For the final 4KB program of 2X Interleave Cache Program scheme, host should issue 2X Program Command(007Dh) on each chip. If the
host issues 007Dh on only a chip, another chip will be on operation as it isn’t finished. Ongo status bit will show the ongoing status of each
chip. Its operation is same as 2X Cache Program operation on each chip. Error bit will show the pass/fail status of each chip of 2X Interleave
Cache program, and Plane1 previous[4] ~ Plane2 current[1] bit will show where the error occured accordingly .
Note that OTP block and 1st block OTP cannot be 2X Interleave Cache Programmed.
MuxOneNAND2G(KFM2G16Q2A-DEBx)
MuxOneNAND4G(KFN4G16Q2A-DEBx)
turn to ‘1’ to indicate that DataRAMs are now ready to be written with next 4KB data.
(Note that before issuing ‘2X Cache Program Command’, host should make sure that the target blocks are unlocked.)
See Timing Diagram 6.15
Page A
Page B
Page A
Page B
Plane1
Plane2
Plane1
Plane2
2) Program
2) Program
4) Program
4) Program
Chip1
Chip2
DataRAM0
DataRAM1
DataRAM0
DataRAM1
- 111 -
1)
, OnGo bit sets to ‘1’.
3) Data Write
1) Data Write
1) Data Write
5) Data Write
3) Data Write
5) Data Write
(during step 4) when INT1 bit goes to ‘1’)
(during step 2) when INT2 bit is on ‘1’)
(during step 4) when INT1 bit goes to ‘1’)
(during step 2) when INT2 bit is on ‘1’)
FLASH MEMORY
1)
again.
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