Rainbow Electronics AT45DB021B - Manual (Page 25)

25
AT45DB021B
1937F–DFLSH–10/02
Detailed Bit-level Read Timing – SPI Mode 3 (Continued)
Buffer Read (Opcode: D4H or D6H)
Status Register Read (Opcode: D7H)
SI 1 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
t
SU
t
V
D4
44
SI 1 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
t
SU
t
V
6
D4 D0 D7
LSB MSB
D6