LH28F800 Sharp Electrionic Components, LH28F800 Datasheet - Page 19

• Manufacturer Part Number: LH28F800
• Description: 8 M-bit (512 kB x 16) SmartVoltage Flash Memories
• Manufacturer: Sharp Electrionic Components

FULL STATUS CHECK PROCEDURE
Read Status Register
Data and Address
Data (See Above)
Check if Desired
Status Register
Write Word
Word Write
Word Write
Successful
Write 40H,
Full Status
Complete
Address
SR.7 =
SR.3 =
SR.1 =
SR.4 =
Read
Start
1
0
0
0
0
1
1
1
Word Write
No
Device Protect Error
Suspend
Word Write Error
V
PP
Fig. 4 Automated Word Write Flowchart
Range Error
Suspend Word
Write Loop
Yes
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OPERATION
OPERATION COMMAND
Write
Write
Read
Standby
Standby
Standby
Standby
Repeat for subsequent word writes.
SR full status check can be done after each word write or after
a sequence of word writes.
Write FFH after the last word write operation to place device
in read array mode.
SR.4, SR.3 and SR.1 are only cleared by the Clear Status
Register command in cases where multiple locations are
written before full status is checked.
If error is detected, clear the status register before attempting
retry or other error recovery.
BUS
BUS
LH28F800SG-L/SGH-L (FOR TSOP, CSP)
COMMAND
Word Write
Word Write
Setup
Data = 40H
Addr = Location to be Written
Data = Data to be Written
Addr = Location to be Written
Status Register Data
Check SR.7
1 = WSM Ready
0 = WSM Busy
Check SR.3
1 = V
Check SR.1
1 = Device Protect Detect
RP# = V
Only required for systems
implementing lock-bit configuration
Check SR.4
1 = Data Write Error
PP
Error Detect
IH
, Block Lock-Bit is Set
COMMENTS
COMMENTS