LH28F800SGXX-L10 データシートの表示（PDF） - Sharp Electronics
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LH28F800SGXX-L10 Datasheet PDF : 45 Pages
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LH28F800SG-L/SGH-L (FOR TSOP, CSP)
Table 3 Command Definitions (NOTE 9)
COMMAND
BUS CYCLES
FIRST BUS CYCLE
SECOND BUS CYCLE
REQ’D.
NOTE Oper (NOTE 1) Addr (NOTE 2) Data (NOTE 3) Oper (NOTE 1) Addr (NOTE 2) Data (NOTE 3)
Read Array/Reset
1
Write
X
FFH
Read Identifier Codes
≥2
4
Write
X
90H
Read
IA
ID
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
D0H
Word Write
2
5, 6 Write
WA 40H or 10H Write
WA
WD
Block Erase and
Word Write Suspend
1
5
Write
X
B0H
Block Erase and
Word Write Resume
1
5
Write
X
D0H
Set Block Lock-Bit
2
7
Write
BA
60H
Write
BA
01H
Set Permanent Lock-Bit
2
7
Write
X
60H
Write
X
F1H
Clear Block Lock-Bits
2
8
Write
X
60H
Write
X
D0H
NOTES :
1. Bus operations are defined in Table 2.
2. X = Any valid address within the device.
IA = Identifier code address : see Fig. 2.
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 6 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 manufacture, device, block lock, and
permanent lock codes. See Section 4.2 for read
identifier code data.
5. If the block is locked and the permanent lock-bit is not
set, WP# must be at VIH or RP# must be at VHH to
enable block erase or word write operations. Attempts to
issue a block erase or word write to a locked block while
WP# is VIH or RP# is VHH.
6. Either 40H or 10H is recognized by the WSM as the
word write setup.
7. If the permanent lock-bit is set, WP# must be at VIH or
RP# must be at VHH to set a block lock-bit. RP# must
be at VHH to set the permanent lock-bit. If the permanent
lock-bit is set, a block lock-bit cannot be set. Once the
permanent lock-bit is set, permanent lock-bit reset is
unable.
8. If the permanent lock-bit is set, clear block lock-bits
operation is unable. The clear block lock-bits operation
simultaneously clears all block lock-bits. If the permanent
lock-bit is not set, the Clear Block Lock-Bits command
can be done while WP# is VIH or RP# is VHH.
9. Commands other than those shown above are reserved
by SHARP for future device implementations and should
not be used.
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