Buffer read (opcode: d4h or d6h), Status register read (opcode: d7h) – Rainbow Electronics AT45DB642 User Manual
Page 28
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28
AT45DB642
1638F–DFLSH–09/02
Detailed Bit-level Read Timing – SPI Mode 3 (Continued)
Main Memory Page Read (Opcode: D2H)
Buffer Read (Opcode: D4H or D6H)
Status Register Read (Opcode: D7H)
SI
0
1
0
1
0
X
X
X
CS
SO
SCK
1
2
3
4
5
61
62
63
64
65
66
67
X
X
HIGH IMPEDANCE
D7
D6
D5
DATA OUT
COMMAND OPCODE
MSB
tSU
tV
D4
68
SI
0
1
0
1
0
X
X
X
CS
SO
SCK
1
2
3
4
5
37
38
39
40
41
42
43
X
X
HIGH IMPEDANCE
D7
D6
D5
DATA OUT
COMMAND OPCODE
MSB
tSU
tV
D4
44
SI
0
1
0
1
0
1
1
1
CS
SO
SCK
1
2
3
4
5
7
8
9
10
11
12
17
18
HIGH IMPEDANCE
D7
D6
D5
STATUS REGISTER OUTPUT
COMMAND OPCODE
MSB
tSU
tV
6
D4
D0
D7
LSB
MSB
D6
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