Document Number: 001-98285 Rev. *R
Page 45 of 108
S29GL01GS/S29GL512S
S29GL256S/S29GL128S
5.7.1
Command State Transitions
Notes:
1. State will automatically move to READ state at the completion of the operation.
2. Also known as Erase Suspend/Program Suspend Legacy Method.
Table 5.6
Read Command State Transition
Current State
Command
and
Condition
Read
Software
Reset / ASO
Exit
Status
Register
Read Enter
Status
Register
Clear
Unlock 1
Blank Check
CFI Entry
Address
RA
xh
x555h
x555h
x555h
(SA)555h
(SA)55h
Data
RD
xF0h
x70h
x71h
xAAh
x33h
x98h
READ
–
READ
READ
READSR
(READ)
READ
READUL1
–
CFI
Read Protect
= False
BLCK
READSR
–
(return)
–
–
–
–
–
–
Table 5.7
Read Unlock Command State Transition
Current
State
Command
and
Condition
Read
Status
Register
Read
Enter
Unlock
2
Word
Program
Entry
Write to
Buffer
Enter
Erase
Enter
ID
(Auto-
select)
Entry
SSR
Entry
Lock
Register
Entry
Password
ASO Entry
PPB
Entry
PPB
Lock
Entry
DYB
ASO
Entry
Address
RA
x555h
x2AAh
x555h
(SA)xh
x555h
(SA)555
h
(SA)555
h
x555h
x555h
x555h
x555h
x555h
Data
RD
x70h
x55h
xA0h
x25h
x80h
x90h
x88h
x40h
x60h
xC0h
x50h
xE0h
READUL1
–
READU
L1
READSR
(READ)
READU
L2
–
–
–
–
–
–
–
–
–
–
READUL2
Read Protect
= True
READU
L2
READSR
(READ)
–
–
–
–
CFI
–
–
PP
–
–
–
Read Protect
= False
PG1
WB
ER
SSR
LR
PPBL
B
DYB
Read Protect
= False and
LR(8) = 0
PPB
Table 5.8
Erase State Command Transition
Current
State
Command
and
Condition
Read
Software
Reset /
ASO Exit
Status
Register
Read
Enter
Status
Register
Clear
Unlock 1
Unlock 2
Chip
Erase
Start
Sector
Erase
Start
Erase
Suspend
Enhanced
Method
Address
RA
xh
x555h
x555h
x555h
x2AAh
x555h
(SA)xh
xh
Data
RD
xF0h
x70h
x71h
xAAh
x55h
x10h
x30h
xB0h
ER
–
ER
–
READSR
(READ)
-
–
ERUL1
–
–
–
–
ERUL1
–
ERUL1
–
READSR
(READ)
–
–
ERUL2
–
–
–
ERUL2
–
ERUL2
–
READSR
(READ)
–
–
–
CER
SER
–
–
CER
–
ERSR
(CER)
–
–
–
–
–
–
SR(7) = 0
SER
–
ERSR
(SER)
–
–
–
–
–
ESR (ES)
SR(7) = 1
READ
READ
SR(7) = 0
BLCK
–
ERSR
(BLCK)
–
–
–
–
–
–
SR(7) = 1
READ
READ
ERSR
–
(return)
–
–
–
–
–
–
–
–