Rainbow Electronics AT45DQ321 - Manual (Page 64)

64 AT45DQ321 [ADVANCE DATASHEET]
DS-45DQ321-031–DFLASH–12/2012
24. Read Operations
The following block diagram and waveforms illustrate the various read sequences available.
Figure 24-1. Block Diagram
Figure 24-2. Main Memory Page Read
Flash Memory Array
Page (512/528 bytes)
Buffer 2 (512/528 bytes) Buffer 1 (512/528 bytes)
I/O Interface
Main Memory
Page To
Buffer 1
Main Memory
Page To
Buffer 2
Main Memory
Page Read Buffer 1
Read
Buffer 2
Read
SO
CS
SI (Input)
SO (Output)
n
CMD PA12-6 PA5-0, BA9-8 BA7-0 X X
Address for Binary Page Size
A21-A16 A15-A8 A7-A0
n n + 1
4 Dummy Bytes