lh28f004su-z9 Sharp Microelectronics of the Americas, lh28f004su-z9 Datasheet - Page 8
lh28f004su-z9
Manufacturer Part Number
lh28f004su-z9
Description
Flash Memory
Manufacturer
Sharp Microelectronics of the Americas
Datasheet
1.LH28F004SU-Z9.pdf
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LH28F004SU-Z9
8
CSR FULL STATUS CHECK PROCEDURE
READ COMPATIBLE
STATUS REGISTER
CHECK IF DESIRED
CSR FULL STATUS
WRITE 40H or 10H
DATA/ADDRESS
RETRY/ERROR
CLEAR CSRD
OPERATION
READ CSRD
RECOVERY
COMPLETE
(see above)
CSR.4, 5 =
CSR.7 =
CSR.3 =
START
WRITE
1
1
0
1
0
0
Figure 4. Word/Byte Writes with Compatible Status Register
SUCCESSFUL
DATA WRITE
V
DETECT
PP
LOW
CSR.3, 4, 5 should be cleared, if set, before further attempts
are initiated.
Repeat for subsequent Word/Byte Writes.
CSR Full Status Check can be done after each Word/Byte Write,
or after a sequence of Word/Byte Writes.
Write FFH after the last operation to reset device
to read array mode.
See Command Bus Cycle notes for description of codes.
OPERATION
OPERATION
Standby
Standby
Standby
Write
Write
Read
BUS
BUS
COMMAND
Word/Byte
COMMAND
Write
D = 40H or 10H
A = X
D = WD
A = WA
Q = CSRD
Toggle CE or OE
to update CSRD.
A = X
Check CSR.7
1 = WSM Ready
0 = WSM Busy
Check CSR.4, 5
1 = Data Write Unsuccessful
0 = Data Write Successful
Check CSR.3
1 = V
0 = V
4M (512K × 8) Flash Memory
PP
PP
Low Detect
OK
COMMENTS
COMMENTS
28F004SU-Z9-4
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