Samsung FLEX-MUXONENAND KFN8GH6Q4M - Manual (Page 13)

Flex-MuxOneNAND4G(KFM4GH6Q4M-DEBx)
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FLASH MEMORY
Flex-MuxOneNAND8G(KFN8GH6Q4M-DEBx)
Flex-MuxOneNAND16G(KFKAGH6Q4M-DEBx)
2.6.2 External (BufferRAM) Memory Organization
The on-chip external memory is comprised of 3 buffers used for Boot Code storage and data buffering.
The BootRAM is a buffer that receives Boot Code from the internal memory and makes it available to the host at start up.
There are 4KB bi-directional data buffers(2KB x2), DataRAM0 and DataRAM1. During Boot Up, the BootRam is used by the host to initialize
the main memory, and deliver boot code from NAND Flash core to host.
The external memory is divided into a main area and a spare area. Each buffer is the equivalent size of a Sector.
The main area data is 512B. The spare area data is 16B.
External Memory Array Information
External Memory Array Organization
Area BootRAM DataRAM0 DataRAM1
Total Size 1KB+32B 2KB+64B 2KB+64B
Number of Sectors 2 4 4
Sector
Main 512B 512B 512B
Spare 16B 16B 16B
Host
OTP Block
Nand Array
Boot code
BootRAM (1KB)
DataRAM0 (2KB)
DataRAM1 (2KB)
External (BufferRAM)
Memory
Internal (Nand Array)
Memory
BootRAM 0
BootRAM 1
BootRAM
DataRAM 1_0
DataRAM 1_1
DataRAM 1_2
DataRAM 1_3
DataRAM1
{
Main area data Spare area data
DataRAM 0_0
DataRAM 0_1
DataRAM 0_2
DataRAM 0_3
DataRAM0
Sector: (512 + 16) Byte
{
(512B) (16B)
4KByte