K9K1G08U0M-YCB0 Datasheet, PDF (33/37 Pages) Samsung semiconductor – 128M x 8 Bit NAND Flash Memory

K9K1G08U0M-YCB0, K9K1G08U0M-YIB0
FLASH MEMORY
READ STATUS
The device contains a Status Register which may be read to find out whether program or erase operation is completed, and whether
the program or erase operation is completed successfully. After writing 70h command to the command register, a read cycle outputs
the content of the Status Register to the I/O pins on the falling edge of CE or RE, whichever occurs last. This two line control allows
the system to poll the progress of each device in multiple memory connections even when R/B pins are common-wired. RE or CE
does not need to be toggled for updated status. Refer to table 4 for specific Status Register definitions. The command register
remains in Status Read mode until further commands are issued to it. Therefore, if the status register is read during a random read
cycle, a read command(00h or 50h) should be given before sequential page read cycle.
For Read Status of Multi Plane Program/Erase, the Read Multi-Plane Status command(71h) should be used to find out whether
multi-plane program or erase operation is completed, and whether the program or erase operation is completed successfully. The
pass/fail status data must be checked only in the Ready condition after the completion of Multi-Plane program or erase operation.
Table4. Read Staus Register Definition
I/O No.
I/O 0
I/O 1
I/O 2
I/O 3
I/O 4
I/O 5
I/O 6
I/O 7
Status
Total Pass/Fail
Plane 0 Pass/Fail
Plane 1 Pass/Fail
Plane 2 Pass/Fail
Plane 3 Pass/Fail
Reserved
Device Operation
Write Protect
Definition by 70h Command
Pass : "0"
Fail : "1"
Must be don’t -cared
Must be don’t -cared
Must be don’t -cared
Must be don’t -cared
Must be don’t -cared
Busy : "0"
Ready : "1"
Protected : "0"
Not Protected : "1"
Definition by 71h Command
Pass : "0"⁽¹⁾
Pass : "0"⁽²⁾
Pass : "0"⁽²⁾
Pass : "0"⁽²⁾
Fail : "1"
Fail : "1"
Fail : "1"
Fail : "1"
Pass : "0"⁽²⁾
Must be don’t-cared
Fail : "1"
Busy : "0"
Ready : "1"
Protected : "0"
Not Protected : "1"
NOTE : 1. I/O 0 describes combined Pass/Fail condition for all planes. If any of the selected multiple pages/blocks fails in Program/
Erase operation, it sets "Fail" flag.
2. The pass/fail status applies only to the corresponding plane.
Read ID
The device contains a product identification mode, initiated by writing 90h to the command register, followed by an address input of
00h. Four read cycles sequentially output the manufacture code(ECh), and the device code (79h), Reserved(A5h), Multi plane oper-
ation code(C0h) respectively. A5h must be don’t-cared. C0h means that device supports Multi Plane operation. The command regis-
ter remains in Read ID mode until further commands are issued to it. Figure 22 shows the operation sequence.
Figure 22. Read ID Operation 1
tCLR
CLE
CE
tCEA
WE
tAR1
ALE
RE
I/O0~7
tWHR
90h
00h
Address. 1cycle
tREA
ECh
Maker code
79h
Device code
A5h
C0h
Multi-Plane code
33