Rainbow Electronics AT45DB021D - Manual (Page 37)

37
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