User Manual

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
10
XXX
CS
SO
SCK
12345 61 62 63 64 65 66 67
XX
HIGH IMPEDANCE
D
7
D
6
D
5
DATA OUT
COMMAND OPCODE
MSB
tSU
tV
D
4
68
SI
0
1
0
10
XXX
CS
SO
SCK
12345 37 38 39 40 41 42 43
XX
HIGH IMPEDANCE
D
7
D
6
D
5
DATA OUT
COMMAND OPCODE
MSB
tSU
tV
D
4
44
SI
0
1
0
10
111
CS
SO
SCK
12345 7891011 12 17 18
HIGH IMPEDANCE
D
7
D
6
D
5
STATUS REGISTER OUTPUT
COMMAND OPCODE
MSB
tSU
tV
6
D
4
D
0
D
7
LSB MSB
D
6