LHF80V25
15
sharp
Table 7. Status Register Definition
WSMS
7
ESS
ES
5
WBWS
VPPS
WBWSS
2
DPS
1
R
0
6
4
3
NOTES:
SR.7 = WRITE STATE MACHINE STATUS (WSMS)
Check RY/BY# or SR.7 to determine block erase or
word/byte write completion. SR.6-0 are invalid while
SR.7="0".
1 = Ready
0 = Busy
SR.6 = ERASE SUSPEND STATUS (ESS)
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
SR.5 = ERASE STATUS (ES)
1 = Error in Block Erasure
0 = Successful Block Erase
If both SR.5 and SR.4 are "1"s after a block erase attempt,
an improper command sequence was entered.
SR.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 of V level.
PP
PP
1 = V Low Detect, Operation Abort
The WSM interrogates and indicates the V level only after
PP
PP
0 = V OK
Block Erase or Word/Byte Write command sequences. SR.3
is not guaranteed to reports accurate feedback only when
PP
SR.2 = WORD/BYTE WRITE SUSPEND STATUS
(WBWSS)
V
≠V
.
PP
PPH1/2
1 = Word/Byte Write Suspended
0 = Word/Byte Write in Progress/Completed
The WSM interrogates the WP# and RP# only after Block
Erase or Word/Byte Write command sequences. It informs
the system, depending on the attempted operation, if the
SR.1 = DEVICE PROTECT STATUS (DPS)
1 = WP# or RP# Lock Detected, Operation Abort
0 = Unlock
WP# is not V RP# is not V
.
IH,
HH
SR.0 = RESERVED FOR FUTURE ENHANCEMENTS (R)
SR.0 is reserved for future use and should be masked out
when polling the status register.
Rev. 1.1
ETC [ ETC ]
