Rainbow Electronics AT45DB041E - Manual (Page 54)

54 AT45DB041E [ADVANCE DATASHEET]
8783B–DFLASH–11/2012
23. Write Operations
The following block diagram and waveforms illustrate the various write sequences available.
Figure 23-1. Block Diagram
Figure 23-2. Buffer Write
Figure 23-3. Buffer to Main Memory Page Program
Flash Memory Array
I/O Interface
SCK
CS
RESET
V
CC
GND
WP
SO SI
Page (256/264 bytes)
Buffer 1 (256/264 bytes) Buffer 2 (256/264 bytes)
CS
SI (Input) CMD X X BFA7-0 n n + 1 Last Byte
Completes Writing into Selected Buffer
Binary Page Size
16 Dummy Bits + BFA7-BFA0
n = 1st byte read
n+1 = 2nd byte read
Each transition represents eight bits
CS
SI (Input)
CMD A15-A8 XXXX XXXX XXXXX,A18-A16
Starts Self-timed Erase/Program Operation
Binary Page Size
A18-A8 + 8 Dummy Bits
Each transition represents eight bits