LRS1302 View Datasheet(PDF) - Sharp Electronics
Part Name
Description
MFG CO.
'LRS1302' PDF : 61 Pages View PDF
SHARI=
LRS13023
16
Table 4. Commanc 1 D- e-f_in_it_io._n~.s_(9_)
RIW f-vr1c.c
Fist Bus Cycle
Second Bus Cycle
Command
Read Array/Reset
Req’d .
1
Notes
Ope#
Write
) Addrc2)
X
1 D-a-t-a-Q)
FFH
Oper(l)
1I Addrt2)
1 Datac3)
I
Read Identifier Codes
22
4
Write
X
90H
Read.
IA
ID
Read Status Register
2
Clear Status Register
1
Write
Write
X_X.
57--U0-HH-
Read
X
SRD
Block Erase
2
5
Write
BA
20H
Write
BA
DOH
Byte Write
2
56
Write
WA
40H
Write
WA
WD
I
I
I
I or I
I
I
I
10H
Block Erase and Byte Write
1
5
Write
X
BOH
Suspend
Block Erase and Byte Write
1
5
Write
X
DOH
Resume
Set Block Lock-Bit
2
7
Write
BA
60H
Write
BA
OlH
Set Master Lock-Bit
2
7
Write
X
60H
Write
X
FlH
Clear Block Lock-Bits
2
8
Write
X
60H
Write
X
DOH
NOTES:
1. BUS operations are defined in Table 3. ”
2. X=Any valid address within the device.
IA=Identifier Code Address: see Figure 3.
BA=Address within the block being erased or locked.
WA=Address of memory location to be written.
3. SRD=Data read from status register. See Table 7 for a description of the status register bits.
WD=Data to be written at location WA. Data is latched on the rising edge of WE or CE (whichever goes high first).
ID=Data read from identifier codes.
4. Following the Read Identifier Codes command, read operations access manufacturer, device, block lock, and
master lock codes. See Section 4.2 for read identifier code data.
5. If the block is locked, i?i? must be at V,, to enable block erase or byte write operations. Attempts to issue a block
erase or byte write to a locked block while m is VII+
6. Either 40H or 10H are recognized by the WSM as the byte write setup.
7. If the master lock-bit is set, m must be at V,, to set a block lock-bit. RP must be at V,, to set the master lock-bit.
If the master lock-bit is not set, a biock lock-bit can be set while i?is is V,,.
8. If the master lock-bit is set, RP must be at V,, to clear block lock-bits. The clear block lock-bits operation
dsiomnueltanwehoiluesly-R. R
clears
1s Vl,.
all
block
lock-bits.
If the master lock-bit
is not set, the Clear Block Lock-Bits
command
can be
9. Commands other than those shown above are reserved by SHARP for future device implementa lions and should
not be used.
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