lh28f160bg-tl Sharp Microelectronics of the Americas, lh28f160bg-tl Datasheet - Page 15

• Manufacturer Part Number: lh28f160bg-tl
• Description: M-bit Smart Flash Memories
• Manufacturer: Sharp Microelectronics of the Americas

OPERATION
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)
Block Erase
Word Write
WSMS
1 = Ready
0 = Busy
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
1 = Error in Block Erase
0 = Successful Block Erase
1 = Error in Word Write
0 = Successful Word Write
1 = V
0 = V
1 = Word Write Suspended
0 = Word Write in Progress/Completed
1 = WP# or RP# Lock Detected, Operation Abort
0 = Unlock
or
7
Table 4 Write Protection Alternatives
PP
PP
PP
> V
STATUS (VPPS)
Low Detect, Operation Abort
OK
V
V
PPLK
PP
IL
ESS
6
RP# WP#
V
V
V
X
HH
IH
IL
V
V
X
X
X
IH
IL
All Blocks Locked.
All Blocks Locked.
All Blocks Unlocked.
2 Boot Blocks Locked.
All Blocks Unlocked.
ES
5
EFFECT
Table 5 Status Register Definition
WWS
4
- 15 -
NOTES :
Check RY/BY# or SR.7 to determine block erase or word
write completion. SR.6-0 are invalid while SR.7 =
If both SR.5 and SR.4 are
improper command sequence was entered.
SR.3 does not provide a continuous indication of V
The WSM interrogates and indicates the V
Block Erase or Word Write command sequences. SR.3 is not
guaranteed to reports accurate feedback only when V
V
The WSM interrogates the WP# and RP# only after Block
Erase or Word Write command sequences. It informs the
system, depending on the attempted operation, if the WP# is
not V
SR.0 is reserved for future use and should be masked out
when polling the status register.
PPH1/2
VPPS
IH
3
, RP# is not V
.
WWSS
HH
2
.
"
1
LH28F160BG-TL/BGH-TL
"
s after a block erase attempt, an
DPS
1
PP
level only after
"
0
"
.
PP
0
R
level.
PP