AT45DB021D-SSH-B-RET Atmel, AT45DB021D-SSH-B-RET Datasheet - Page 36

• Manufacturer Part Number: AT45DB021D-SSH-B-RET
• Manufacturer: Atmel

18.
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Figure 17-11. Buffer to Main Memory Page Program (Data from Buffer Programmed into Flash Page)
Read Operations
The following block diagram and waveforms illustrate the various read sequences available.
Figure 18-1. Main Memory Page Read
SI (INPUT)
Atmel AT45DB021D
SO (OUTPUT)
SI (INPUT)
CS
MAIN MEMORY
PAGE (256-/264-BYTES)
BUFFER (256-/264-BYTES)
CS
PAGE TO
represents 8 bits
BUFFER
BUFFER
Each transition
READ
CMD
CMD
FLASH MEMORY ARRAY
ADDRESS FOR BINARY PAGE SIZE
A16
PA8-7
I/O INTERFACE
SO
PA6-0, BA8
A15-A8
MAIN MEMORY
PAGE READ
PA9-7
Starts self-timed erase/program operation
A17-A8 + 8 DON'T CARE BITS
A7-A0
BINARY PAGE SIZE
BA7-0
PA6-0, X
X
4 Dummy Bytes
XXXX XX
n = 1st byte read
n+1 = 2nd byte read
X
n
n+1
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