Owner's manual

23
AT45DB021B
1937F–DFLSH–10/02
Detailed Bit-level Read Timing – SPI Mode 0 (Continued)
Buffer Read (Opcode: D4H or D6H)
Status Register Read (Opcode: D7H)
SI
1
1
0
10
XXX
CS
SO
SCK
12345 36 37 38 39 40 41 42 43
XX
HIGH-IMPEDANCE
COMMAND OPCODE
t
SU
D
7
D
6
D
5
DATA OUT
MSB
t
V
D
4
SI
1
1
0
10
111
CS
SO
SCK
12345 7891011 12 16 17
HIGH-IMPEDANCE
STATUS REGISTER OUTPUT
COMMAND OPCODE
MSB
t
SU
6
D
1
D
0
D
7
LSB MSB
D
7
D
6
D
5
t
V
D
4