Samsung KFN4G16Q2A External Memory BufferRAM Address Map, Division Address Size Usage Description

MuxOneNAND2G(KFM2G16Q2A-DEBx)	FLASH MEMORY
MuxOneNAND4G(KFN4G16Q2A-DEBx)

2.7.3 External Memory (BufferRAM) Address Map

The following table shows the External Memory address map in Word and Byte Order.

Note that the data output is unknown while host reads a register bit of reserved area.

Division	Address	Address			Size		Usage	Description
	(word order)	(byte order)		(total 128KB)
	0000h~00FFh	00000h~001FEh	512B		1KB	R	BootM 0	BootRAM Main sector0
	0100h~01FFh	00200h~003FEh	512B				BootM 1	BootRAM Main sector1
	0200h~02FFh	00400h~005FEh	512B				DataM 0_0	DataRAM Main page0/sector0
	0300h~03FFh	00600h~007FEh	512B				DataM 0_1	DataRAM Main page0/sector1
Main area	0400h~04FFh	00800h~009FEh	512B				DataM 0_2	DataRAM Main page0/sector2
	0500h~05FFh	00A00h~00BFEh	512B				DataM 0_3	DataRAM Main page0/sector3
(64KB)					4KB	R/W
	0600h~06FFh	00C00h~00DFEh	512B				DataM 1_0	DataRAM Main page1/sector0
	0700h~07FFh	00E00h~00FFEh	512B				DataM 1_1	DataRAM Main page1/sector1
	0800h~08FFh	01000h~011FEh	512B				DataM 1_2	DataRAM Main page1/sector2
	0900h~09FFh	01200h~013FEh	512B				DataM 1_3	DataRAM Main page1/sector3
	0A00h~7FFFh	01400h~0FFFEh	59K		59K	-	Reserved	Reserved
	8000h~8007h	10000h~1000Eh	16B		32B	R	BootS 0	BootRAM Spare sector0
	8008h~800Fh	10010h~1001Eh	16B				BootS 1	BootRAM Spare sector1
	8010h~8017h	10020h~1002Eh	16B				DataS 0_0	DataRAM Spare page0/sector0
	8018h~801Fh	10030h~1003Eh	16B				DataS 0_1	DataRAM Spare page0/sector1
Spare area	8020h~8027h	10040h~1004Eh	16B				DataS 0_2	DataRAM Spare page0/sector2
	8028h~802Fh	10050h~1005Eh	16B				DataS 0_3	DataRAM Spare page0/sector3
(8KB)					128B	R/W
	8030h~8037h	10060h~1006Eh	16B				DataS 1_0	DataRAM Spare page1/sector0
	8038h~803Fh	10070h~1007Eh	16B				DataS 1_1	DataRAM Spare page1/sector1
	8040h~8047h	10080h~1008Eh	16B				DataS 1_2	DataRAM Spare page1/sector2
	8048h~804Fh	10090h~1009Eh	16B				DataS 1_3	DataRAM Spare page1/sector3
	8050h~8FFFh	100A0h~11FFEh	8032B		8032B	-	Reserved	Reserved
Reserved	9000h~BFFFh	12000h~17FFEh	24KB		24KB	-	Reserved	Reserved
(24KB)
Reserved	C000h~CFFFh	18000h~19FFEh	8KB		8KB	-	Reserved	Reserved
(8KB)
Reserved	D000h~EFFFh	1A000h~1DFFEh	16KB		16KB	-	Reserved	Reserved
(16KB)
Registers	F000h~FFFFh	1E000h~1FFFEh	8KB		8KB	R or R/W	Registers	Registers
(8KB)

- 49 -