Si (input) so (output), Sck cs si so – Rainbow Electronics AT45DB021D User Manual
Page 37
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3638K–DFLASH–11/2012
AT45DB021D
Figure 18-2. Main Memory Page to Buffer Transfer (Data from Flash Page Read into Buffer)
Figure 18-3. Buffer Read
19.
Detailed Bit-level Read Waveform – RapidS Serial Interface Mode 0/Mode 3
Figure 19-1. Continuous Array Read (Legacy Opcode E8H)
Starts reading page data into buffer
SI (INPUT)
CMD
X···X, PA9-7
PA6-0, X
CS
SO (OUTPUT)
XXXX XXXX
BINARY PAGE SIZE
6 DON’T CARE BITS + A17-A8 + 8 DON'T CARE BITS
CMD
CS
n
n+1
X
X
1 Dummy Byte
X..X, BFA8
BFA7- 0
BINARY PAGE SIZE
16 DON'T CARE + BFA7-BFA0
Each transition
represents 8 bits
SI (INPUT)
SO (OUTPUT)
SCK
CS
SI
SO
MSB
MSB
2
3
1
0
1
1
1
0
1
0
0
0
6
7
5
4
10 11
9
8
12
63
66 67
65
64
62
33 34
31 32
29 30
68
71 72
70
69
OPCODE
A
A
A
A
A
A
A
A
A
MSB
X
X
X
X
X
X
MSB
MSB
D
D
D
D
D
D
D
D
D
D
ADDRESS BITS
32 DON'T CARE BITS
DATA BYTE 1
HIGH-IMPEDANCE
BIT 2047/2111
OF PAGE n
BIT 0 OF
PAGE n+1