LRS1341 Sharp, LRS1341 Datasheet - Page 5

• Manufacturer Part Number: LRS1341
• Description: Stacked Chip 16M Flash Memory and 2M SRAM
• Manufacturer: Sharp

Stacked Chip (16M Flash & 2M SRAM)
SR.7 = Write State Machine Status (WSMS)
SR.6 = Erase Suspend Status (ESS)
SR.5 = Erase Status (ES)
SR.4 = Word Write Status (WWS)
SR.3 = V
SR.2 = Word Write Suspend Status (WWSS)
SR.1 = Device Protect Status (DPS)
SR.0 = Reserved for future enhancements (R)
Data Sheet
1 = Ready
0 = Busy
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
1 = Error in Block Erasure
0 = Successful Block Erase
1 = Error in Word Write
0 = Successful Word Write
1 = F-V
0 = F-V
1 = Word Write Suspended
0 = Word Write in Progress/Completed
1 = F-WP and/or F-RP Lock Detected,
0 = Unlock
WSMS
7
Operation Abort
PP
PP
PP
Status (VPPS)
LOW Detect, Operation Abort
Okay
Manufacture Code
Device Code
ESS
6
CODES
Block Erase or
Word Write
OPERATION
ES
5
Table 5. Write Protection Alternatives
Table 6. Status Register Definition
> V
F-V
ADDRESS
V
(A
Table 4. Identifier Codes
PPLK
00000H
00001H
IL
PP
0
- A
WWS
4
18
)
F-RP
V
V
V
V
X
HH
IH
IH
IL
NOTES:
1. Check RY/BY or SR.7 to determine block erase or word write
2. If both SR.5 and SR.4 are ‘1’s after a block erase attempt, an
3. SR.3 does not provide a continuous indication of F-V
4. The WSM interrogates the F-WP and F-RP only after Block Erase
5. SR.0 is reserved for future use and should be masked out when
LRS1341 DATA
F-WP
VPPS
V
V
(DQ
completion. SR.6 - SR.0 are invalid while SR.7 = 0.
improper command sequence was entered.
WSM interrogates and indicates the F-V
Erase or Word Write command sequences. SR.3 is not guaranteed
to report accurate feedback only when F-V
or Word Write command sequences. It informs the system,
depending on the attempted operation, if the F-WP is not V
F-RP is not V
polling the status register.
X
X
X
IH
IL
3
B0H
0
48H
- DQ
All blocks locked
All blocks locked
All blocks unlocked
Two boot blocks locked
All blocks unlocked
7
HH
)
.
WWSS
EFFECT
2
LRS1342 DATA
(DQ
B0H
0
49H
- DQ
DPS
1
7
)
LRS1341/LRS1342
PP
PP
level only after Block
≠ V
PPH1
PP
, V
R
0
level. The
PPH2
IH
.
or
5