lh28f160s5h-l Sharp Microelectronics of the Americas, lh28f160s5h-l Datasheet - Page 24
lh28f160s5h-l
Manufacturer Part Number
lh28f160s5h-l
Description
M-bit Smart Flash Memories Fast Programming
Manufacturer
Sharp Microelectronics of the Americas
Datasheet
1.LH28F160S5H-L.pdf
(55 pages)
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FULL STATUS CHECK PROCEDURE
Read Status Register
Data (See Above)
Check if Desired
Status Register
Status Register
Block Address
Block Address
Block Erase
Block Erase
Write D0H,
Successful
Write 20H,
Full Status
Write 70H
Complete
SR.4, 5 =
SR.7 =
SR.7 =
SR.3 =
SR.1 =
SR.5 =
Read
Read
Start
1
1
0
0
0
0
0
0
1
1
1
1
Device Protect Error
Command Sequence
Block Erase Error
V
Block Erase
PP
No
Suspend
Range Error
Error
Fig. 3 Automated Block Erase Flowchart
Suspend Block
Erase Loop
Yes
- 24 -
OPERATION
OPERATION
Read
Standby
Standby
Standby
Standby
Write
Read
Standby
Write
Write
Standby
Repeat for subsequent block erasures.
Full status check can be done after each block erase or after
a sequence of block erasures.
Write FFH after the last block erase operation to place device
in read array mode.
SR.5, SR.4, SR.3 and SR.1 are only cleared by the Clear
Status Register command in cases where multiple blocks
are erased before full status is checked.
If error is detected, clear the status register before attempting
retry or other error recovery.
BUS
BUS
Read Status
Erase Setup
COMMAND
COMMAND
Register
Confirm
Erase
Data = 70H
Addr = X
Status Register Data
Check SR.7
1 = WSM Ready
0 = WSM Busy
Data = 20H
Addr = Within Block to be Erased
Data = D0H
Addr = Within Block to be Erased
Status Register Data
Check SR.7
1 = WSM Ready
0 = WSM Busy
Check SR.3
1 = V
Check SR.1
1 = Device Protect Detect
WP# = V
Only required for systems implement-
ing block lock-bit configuration
Check SR.4, 5
Both 1 = Command Sequence Error
Check SR.5
1 = Block Erase Error
PP
Error Detect
IL
, Block Lock-Bit is Set
LH28F160S5-L/S5H-L
COMMENTS
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