KFG2816Q1M Datasheet, PDF (31/87 Pages) Samsung semiconductor – OneNAND SPECIFICATION

OneNAND128
FLASH MEMORY
8. Device Operation
The device supports both a limited command based and a register based interface for performing operations on the device, reading
device ID, writing data to buffer etc. The command based interface is active in the boot partition, i.e. commands can only be written
with a boot area address. Boot area data is only returned if no command has been issued prior to the read.
8.1 Command based operation
The entire address range, except for the boot area, can be used for the data buffer. All commands are written to the boot partition. Writes outside the
boot partition are treated as normal writes to the buffers or registers. The command consists of one or more cycles depending on the command. After
completion of the command the device starts its execution. Writing incorrect information which include address and data or writing an improper command
will terminate the previous command sequence and make the device go to the ready status. The defined valid command sequences are stated in Table4.
Table 4. Command Sequences
Command Definition
Cycles
1st cycle
Read Data from Buffer
Add
Data
DP¹⁾
1
Data
Write Data to Buffer
Add
Data
DP
1
Data
Reset OneNAND
Add
Data
BP²⁾
1
00F0h
Load Data into Buffer³⁾
Add
Data
BP
2
00E0h
Read Identification Data ⁶⁾
Add
Data
BP
2
0090h
NOTE:
1) DP(Data Partition) : DataRAM Area
2) BP(Boot Partition) : BootRAM Area [0000h ~ 01FFh, 8000h ~ 800Fh].
3) Load Data into Buffer operation is available within a block(64KB)
4) Load 1KB unit into DataRAM0. Current Start address(FPA) is automatically incremented by 1KB unit after the load.
5) 0000h -> Data is Manufacturer ID
0001h -> Data is Device ID
0002h -> Current Block Write Protection Status
6) WE toggling can terminate ’Read Identification Data’ operation.
2nd cycle
BP
0000h⁴⁾
XXXXh⁵⁾
Data
8.1.1 Read Data from Buffer
Buffer can be read by addressing a read to a wanted buffer area
8.1.2 Write Data to Buffer
Buffer can be written by addressing a write to a wanted buffer area
8.1.3 Reset OneNAND
Reset command is given by writing 00F0h to the boot partition address. Reset will return all default values into the device.
8.1.4 Load Data into Buffer
Load Data into Buffer command is a two-cycle command. Two sequential designated command activates this operation. Sequentially writing 00E0h
and 0000h to the boot partition [0000h~01FFh, 8000h~800Fh] will load one page to DataRAM0. This operation refers to FBA and FPA. FSA, BSA, and
BSC are not considered.
At the end of this operation, FPA will be automatically increased by 1. So continuous issue of this command will sequentially load data in next page to
DataRAM0. This page address increment is restricted within a block.
The default value of FBA and FPA is 0. Therefore, initial issue of this command after power on will load the first page of memory, which is usually boot
code.
8.1.5 Read Identification Data
Read Identification Data command consists of two cycles. It gives out the devices identification data according to the given address. The first cycle is
0090h to the boot partition address and second cycle is read from the addresses specified in Table5.
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