參數(shù)資料
型號(hào): LH28F020SU-N
廠商: Sharp Corporation
英文描述: 2M (256K 】 8) Flash Memory
中文描述: 200萬(wàn)(256K】8)閃存
文件頁(yè)數(shù): 16/31頁(yè)
文件大?。?/td> 245K
代理商: LH28F020SU-N
LH28F020SU-L
2M (256K × 8) Flash Memory
16
Figure 12. Set Write Protect
START
CSR.7 =
0
1
WRITE 57H
WRITE CONFIRM
DATA/ADDRESS
READ COMPATIBLE
STATUS REGISTER
CSR.7 =
0
0
1
1
(NOTE)
CSR.4, 5 =
28F020SUL15-11
READ COMPATIBLE
STATUS REGISTER
OPERATION
COMPLETE
BUS
OPERATION
COMMAND
COMMENTS
Read
Write
Write
Set
Write Protect
Set Confirm
Check CSR.7
1 = WSM Ready
0 = WSM Busy
D = D0H
A = 0FFH
(A
- A
= 0, A
7
- A
0
= 1,
Others = X)
NOTE:
If CSR.4, 5 is set, as it is command sequence error,
should be cleared before further attempts are initiated.
Upon device power-up or reset is complete, Set Write
Protect command must be written to reflect the actual
lock-bit status.
Write FFH after the last operation to reset device to
Read Array Mode.
See Command Bus Cycle notes for description of codes.
D = 57H
A = X
Read
Check CSR.7
1 = WSM Ready
0 = WSM Busy
Read
Check CSR.4, 5
1 = Unsuccesful
0 = Successful
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