Figure 12-3. Command Sequence for Read/Write Operations (except Status Register Read)
SI
CMD 8 bits 8 bits 8 bits
ADDRESS BYTES
MSB
XXXX XXXX XXXX XXXX XXXX XXXX
LSB
A23-A16
A15-A8
A7-A0
13. Write Operations
The following waveforms illustrate the various write sequences available.
Figure 13-1. Byte Program
CS
SI
· Starts self-timed program operation
CMD
A23-A16
A15-A8
A7-A0
n
Figure 13-2. Page Program
CS
SI
CMD
A23-A16
A15-A8
A7-A0
n
Each transition represents
8 bits and 8 clock cycles
· Completes writing into selected buffer
· Starts self-timed erase/program operation
n+1
Last Byte
n = 1st byte read
n+1 = 2nd byte read
14. Read Operations
The following waveform illustrates the read sequence available.
Figure 14-1. Continuous Array Read
Don't Care byte not needed for Low Frequency read (03H opcode)
CS
SI
CMD
A23-A16
A15-A8
A7-A0
X
SO
n
n+1
Each transition represents
8 bits and 8 clock cycles
n = 1st byte read
n+1 = 2nd byte read
14 AT26DF041
3495B–DFLSH–8/05