lrs1386 Sharp Microelectronics of the Americas, lrs1386 Datasheet - Page 15
lrs1386
Manufacturer Part Number
lrs1386
Description
Flash Memory
Manufacturer
Sharp Microelectronics of the Americas
Datasheet
1.LRS1386.pdf
(114 pages)
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6. Status Register Definition
SR.15 - SR.8 = RESERVED FOR FUTURE
SR.7 = WRITE STATE MACHINE STATUS (WSMS)
SR.6 = BLOCK ERASE SUSPEND STATUS (BESS)
SR.5 = BLOCK ERASE AND FULL CHIP ERASE
SR.4 = (PAGE BUFFER) PROGRAM AND
SR.3 = F-V
SR.2 = (PAGE BUFFER) PROGRAM SUSPEND
SR.1 = DEVICE PROTECT STATUS (DPS)
SR.0 = RESERVED FOR FUTURE ENHANCEMENTS (R)
WSMS
1 = Ready
0 = Busy
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
1 = Error in Block Erase or Full Chip Erase
0 = Successful Block Erase or Full Chip Erase
1 = Error in (Page Buffer) Program or OTP Program
0 = Successful (Page Buffer) Program or OTP Program
1 = F-V
0 = F-V
1 = (Page Buffer) Program Suspended
0 = (Page Buffer) Program in Progress/Completed
1 = Erase or Program Attempted on a
0 = Unlocked
15
R
7
Locked Block, Operation Abort
STATUS (BEFCES)
OTP PROGRAM STATUS (PBPOPS)
STATUS (PBPSS)
PP
PP
PP
STATUS (VPPS)
LOW Detect, Operation Abort
OK
ENHANCEMENTS (R)
BESS
14
R
6
BEFCES
13
R
5
Status Register Definition
PBPOPS
12
R
4
L R S1 3 8 6
Notes:
Status Register indicates the status of the partition, not WSM
(Write State Machine). Even if the SR.7 is "1", the WSM may
be occupied by the other partition when the device is set to 2, 3
or 4 partitions configuration.
Check SR.7 or F-RY/BY to determine block erase, full chip
erase, (page buffer) program or OTP program completion.
SR.6 - SR.0 are invalid while SR.7="0".
If both SR.5 and SR.4 are "1"s after a block erase, full chip
erase, page buffer program, set/clear block lock bit, set block
lock-down bit or set read/partition configuration register
attempt, an improper command sequence was entered.
SR.3 does not provide a continuous indication of F-V
The WSM interrogates and indicates the F-V
Block Erase, Full Chip Erase, (Page Buffer) Program or OTP
Program command sequences. SR.3 is not guaranteed to report
accurate feedback when F-V
SR.1 does not provide a continuous indication of block lock
bit. The WSM interrogates the block lock bit only after Block
Erase, Full Chip Erase, (Page Buffer) Program or OTP Pro-
gram command sequences. It informs the system, depending
on the attempted operation, if the block lock bit is set. Reading
the block lock configuration codes after writing the Read Iden-
tifier Codes/OTP command indicates block lock bit status.
SR.15 - SR.8 and SR.0 are reserved for future use and should
be masked out when polling the status register.
VPPS
11
R
3
PBPSS
10
R
2
PP
V
PPH1/2
DPS
R
9
1
or V
PP
PPLK
level only after
.
PP
R
R
8
0
level.
13
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