A25LQ080 Series
Read Data Bytes at Higher Speed by Dual Input and Dual Output (FAST_READ_DUAL_INPUT_OUTPUT)
The FAST_READ_DUAL_INPUT_OUTPUT (BBh) instruction
is similar to the FAST_READ (0Bh) instruction except the
data is input and output on two pins, IO0 and IO1, instead of
just DO. This allows data to be transferred from the
A25LQ080 at twice the rate of standard SPI devices.
Similar
to
the
FAST_READ
instruction,
instruction
the
can
FAST_READ_DUAL_INPUT_OUTPUT
operate at the highest possible frequency of fC (See AC
Characteristics).
Figure 10. FAST_READ_DUAL_INPUT_OUTPUT Instruction Sequence and Data-Out Sequence
S
6
0
1
2
3
4
5
7
8
9 10
16 17 18 19
C
IO0
IO1
Instruction (BBh)
24-Bit Address
22
18
4
2
3
0
1
20
6
MSB
High Impedance
23
19
7
5
21
S
C
21 22 23 24 25 26 27 28
20
29 30 31 32 33 34 35
Dummy
Byte
DIO switches from input to output
IO0
IO1
6
7
4
2
0
1
6
7
4
2
0
6
4
2
0
6
4
2
0
1
6
7
4
5
2
3
0
1
6
7
4
5
2
3
0
1
3
1
3
5
3
5
3
1
5
7
5
7
7
MSB
MSB
MSB
MSB
Data Out 2
Data Out 3
Data Out 4
Data Out 5
Data Out 1
Note: Address bits A23 to A20 are Don’t Care, for A25LQ080.
(April, 2016, Version 1.0)
20
AMIC Technology Corp.
AMICC [ AMIC TECHNOLOGY ]
