lh28f004su-nc Sharp Microelectronics of the Americas, lh28f004su-nc Datasheet - Page 17

• Manufacturer Part Number: lh28f004su-nc
• Description: 512k Flash Memory
• Manufacturer: Sharp Microelectronics of the Americas

4M (512K × 8) Flash Memory
READ COMPATIBLE
READ COMPATIBLE
STATUS REGISTER
STATUS REGISTER
WRITE CONFIRM
DATA/ADDRESS
OPERATION
COMPLETE
WRITE 47H
CSR.4, 5 =
CSR.7 =
CSR.7 =
START
0
1
1
0
1
0
(NOTE)
Figure 13. Reset Write Protect
OPERATION
NOTE:
If CSR.4, 5 is set, as it is command sequence error,
should be cleared before further attempts are initiated.
Reset Write Protect command enables Write/Erase
operation to all blocks.
Write FFH after the last operation to reset device to
Read Array Mode.
See Command Bus Cycle notes for description of codes.
Read
Write
Write
Read
Read
BUS
Write Protect
COMMAND
Confirm
Reset
Reset
Check CSR.7
1 = WSM Ready
0 = WSM Busy
D = 47H
A = X
D = D0H
A = 0FFH
(A
Others = X)
Check CSR.7
1 = WSM Ready
0 = WSM Busy
Check CSR.4, 5
1 = Unsuccesful
0 = Successful
9
- A
8
= 0, A
COMMENTS
7
- A
0
= 1,
LH28F004SU-NC
28F004SUT-NC80-12
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