
OneNAND256
FLASH MEMORY
33
7.22 Controller Status Register (R): F240h, default=0000h
OnGo
: this bit shows the overall internal status of OneNAND
  0=ready, 1=busy
Lock
: this bit shows whether host loads data from NAND Flash array into locked BootRAM or programs/erases locked block of NAND Flash array.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
OnGo
Lock
Load
Prog
Erase
Error
Sus
PRp
RSTB
OTP
L
Reserved(000000)
TO
(0)
Lock
Locked/Unlocked Check Result
0
Unlocked
1
Locked
Error
Current Sector/Page Load/Program/CopyBack. Program/Erase Result 
and Invalid Command Input
0
Pass
1
Fail
Error
 (Current Sector/Page Write Result): this bit shows current sector/page Load/Program/Copy Back Program/Erase result of flash memory or whether 
host puts invalid command into the device.
7.19 System Configuration 2 Register : F222h
                                              : N/A
Sus
Erase Suspend Status
0
Erase Resume(Default)
1
Erase Suspend
Sus (Erase Suspend/Resume):this bit shows the Erase Suspend Status.
OTP
L
OTP Locked/Unlocked Status
0
OTP Block Unlock Status(Default)
1
OTP Block Lock Status(Disable OTP Program/Erase)
OTP
L
 (OTP Lock Status):this bit shows OTP block is locked or unlocked. OTP
L
 bit is automatically updated at power-on. 
TO
 (Time Out): time out for read/program/copy back program/erase
  0=no time out(fixed)
Load
 : this bit shows the Load operation status
  0=ready(default), 1=busy or error case, refer to the table 3
Prog 
(Program Busy) : this bit shows the Program operation status
  0=ready(default), 1=busy or error case, refer to the table 3
Erase 
(Erase Busy) : this bit shows the Erase operation status
  0=ready(default), 1=busy or error case, refer to the table 3
RSTB
 (Reset Busy) : this bit shows the Reset operation status
  0=ready(default), 1=busy or error case, refer to the table 3