SHARP
LRS1329
6
6. Status Register Definition
WSMS
ESS
ES
WBWS VPPS WBWSS
DPS R
7 6 5 4 3
2
1 0
NOTES :
S R. 7= WRITE STATE MACHINE STATUS ( W SMS) Check RYm or SR.7 to determine block erase OI
1 = Ready
word/byte write completion. SR.6-0 are invalid
0 = Busy
whi 1 e SR. 7=“0”.
SR. 6= ERASE SUSPEND STATUS( ESS)
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
SR.5=ERASESTATUS( ES )
If both SR. 5 and SR.4 are “1”s after a block
1 = Error in Block Erasure
erase attempt, an improper command sequence
0 = Successful Block Erase was entered.
S R. 4= WORD/BYTE WRITE STATUS ( WBWS )
1 = Error in Word/Byte Write
0 = Successful Word/Byte Write
SR. 3= V,, STATUS ( VPPS )
SR.3 does not provide a continuous indication
1 = F-V,, Low Detect, Operation Abort
of F-V,, level. The WSM interrogates and
0 = F-V,, OK
indicates the F-V,, level only after Block
Erase or Word/ByteWrite command sequences. SR.:
S R. 2 = WORD/BYTE WRITE SUSPENDED STATUS
is not guaranteed to reports accurate feedback
(WBWSS)
on 1 y when F-V, +Vepm,2.
1 =Word/ByteWrite Suspended
0 =Word/ByteWrite in Progress/Completed
S R . l= DEVICE PROTECT STATUS ( D P S )
1 = F-‘WP or F-@’ Lock Detected,
Operation Abort
0 = Unlock
The WSM interrogates the F-s and F-E only
after Block Erase orWord/ByteWrite command
sequences.
It informs the system, depending
on the attempted operation, if the F-w is
not VIM,
F-E is not Vm+
S R. 0 = RESERVED FOR FUTURE ENBANCEMENTS
SR.0 is reserved for future use and should be
4,R > masked out when polling the status register.