LH28F004SU-LC Sharp Electrionic Components, LH28F004SU-LC Datasheet - Page 14

• Manufacturer Part Number: LH28F004SU-LC
• Description: 4M (512K bb 8) Flash Memory
• Manufacturer: Sharp Electrionic Components

LH28F004SU-LC
14
OPERATION COMPLETE
READ COMPATIBLE
READ COMPATIBLE
STATUS REGISTER
STATUS REGISTER
WRITE DATA/A
DATA/ADDRESS
Figure 9. Two-Byte SerialWrites with Compatible Status Registers (LH28F004SU)
WRITE FBH
CSR.4, 5 =
ANOTHER
CSR.7 =
CSR.7 =
START
2-BYTE
WRITE
WRITE
1
1
0
NO
10
0
1
0
YES
(NOTE)
OPERATION
NOTE:
If CSR.4, 5 is set, as it is command sequence error,
should be cleared before further attempts are initiated.
CSR Full Status Check can be done after each 2-Byte Write,
or after a sequence of 2-Byte Writes.
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
Write
Read
BUS
COMMAND
2-Byte
Write
Q = CSRD
Toggle CE or OE
to update CSRD.
1 = WSM Ready
0 = WSM Busy
D = FBH
A = X
D = WD
A
of Data Register.
A
of Data Register.
Other Addresses = X
D = WD
A = WA
Internally, A
complemented to load the
alternate byte location of the
Data Register.
Q = CSRD
Toggle CE or OE
to update CSRD.
1 = WSM Ready
0 = WSM Busy
10
10
= 0 loads low byte
= 1 loads high byte
4M (512K × 8) Flash Memory
COMMENTS
10
is automatically
28F004SUT-LC12-9