AT45DB021B
14.3
Buffer Read (Opcode: D4H or D6H)
CS
SCK
1
2
3
4
5
36
37
38
39
40
41
42
43
t SU
COMMAND OPCODE
SI
1
1
0
1
0
X
X
X
X
X
SO
HIGH-IMPEDANCE
t V
D7
DATA OUT
D6 D5
D4
MSB
14.4
Status Register Read (Opcode: D7H)
CS
SCK
1
2
3
4
5
6
7
8
9
10
11
12
16
17
t SU
COMMAND OPCODE
SI
1
1
0
1
0
1
1
1
SO
HIGH-IMPEDANCE
t V
D7
D6
STATUS REGISTER OUTPUT
D5 D4 D1 D0
D7
MSB
15. Detailed Bit-level Read Timing – SPI Mode 3
15.1
Continuous Array Read (Opcode: E8H)
CS
LSB
MSB
SCK
1
2
63
64
65
66
67
t SU
SI
1
1
X
X
X
SO
HIGH-IMPEDANCE
t V
DATA OUT
D7 D6 D5
D2
D1
LSB
D0
MSB
D7
D6
D5
BIT 2111
OF
PAGE n
BIT 0
OF
PAGE n+1
23
1937J–DFLSH–9/05
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