at25df321a ATMEL Corporation, at25df321a Datasheet - Page 11

• Manufacturer Part Number: at25df321a
• Description: 32-megabit 2.7-volt Minimum Spi Serial Flash Memory
• Manufacturer: ATMEL Corporation

Figure 7-4.
3686C–DFLASH–12/08
SCK
SIO
SO
CS
Dual-Output Read Array
HIGH-IMPEDANCE
MSB
0
0
0
1
1
2
OPCODE
1
the device will continue reading back at the beginning of the array (000000h). No delays will be
incurred when wrapping around from the end of the array to the beginning of the array.
Deasserting the CS pin will terminate the read operation and put the SO and SIO pins into a
high-impedance state. The CS pin can be deasserted at any time and does not require that a full
byte of data be read.
3
1
4
0
5
1
6
1
7
MSB
A
8
A
9
A
ADDRESS BITS A23-A0
10 11
A
A
12
A
A
29 30
A
A
31 32
MSB
X
X
33
X
DON'T CARE
34
AT25DF321A [Preliminary]
X
35
X
36
X
37 38
X
X
39
MSB
D 6
D 7
40
DATA BYTE 1
OUTPUT
D 4
D 5
41
D 2
D 3
42 43
D 0
D 1
MSB
D 6
D 7
44
DATA BYTE 2
OUTPUT
D 4
D 5
45
D 2
D 3
46
D 0
D 1
47 48
MSB
D 6
D 7
D 4
D 5
11