LH28F008SCL-12 View Datasheet(PDF) - Sharp Electronics
Part Name
Description
Manufacturer
LH28F008SCL-12 Datasheet PDF : 49 Pages
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LHF08CH3
Table 4. Command Definit ions(g)
Bus Cycles
First B us Cycle
Second Bus Cycle
Command
Rea’d. Notes Ooer(l) ,1 AJddr(2) 1 Data(“) Oper(‘) 1 Addr12) 1 Datat3)
Read Array/Reset
11Read Identifier Codes
1
1 22
1 Write 1 X 1 FFH
I 4 I Write I X I 90H I Read I IA I ID /I
Read Status Register
2
Write
X
70H
Read
X
SRD
Clear Status Register
1
Write
X
50H
Block Erase
2
5
Write
BA
20H
Write
BA
DOH
IIByte Write
40H
2
5,6 Write
WA
Write
WA
WD
l&
id Byte Write
1
Resume
id Byte Write
1
Set Block Lock-Bit
2
5
Write
X
BOH
I
5
Write
7
Write
X
DOH
1
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=ldentifier Code Address: see Figure 4.
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, RP# 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 RP# is V,,.
6. Either 40H or 10H are recognized by the WSM as the byte write setup.
7. If the master lock-bit is set, RP# 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 block lock-bit can be set while RP# 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
simultaneously clears all block lock-bits. If the master lock-bit is not set, the Clear Block Lock-Bits command can
be done while RP# is VI,.
9. Commands other than those shown above are reserved by SHARP for future device implementations and
should not be used.
Rev. 1.0
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