at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 738

• Manufacturer Part Number: at91sam9260-cj
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

41.7.1
738
AT91SAM9260
SDRAMC Signals
These timings are given for a 10 pF load on SDCK and 50 pF on the data bus.
Table 41-21. SDRAMC Clock Signal
Table 41-22. SDRAMC Signals
Symbol
1/(t
Symbol
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
SDRAMC
CPSDCK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
)
Parameter
SDRAM Controller Clock Frequency
Parameter
SDCKE High before SDCK Rising Edge
SDCKE Low after SDCK Rising Edge
SDCKE Low before SDCK Rising Edge
SDCKE High after SDCK Rising Edge
SDCS Low before SDCK Rising Edge
SDCS High after SDCK Rising Edge
RAS Low before SDCK Rising Edge
RAS High after SDCK Rising Edge
SDA10 Change before SDCK Rising Edge
SDA10 Change after SDCK Rising Edge
Address Change before SDCK Rising Edge
Address Change after SDCK Rising Edge
Bank Change before SDCK Rising Edge
Bank Change after SDCK Rising Edge
CAS Low before SDCK Rising Edge
CAS High after SDCK Rising Edge
DQM Change before SDCK Rising Edge
DQM Change after SDCK Rising Edge
D0-D15 in Setup before SDCK Rising Edge
D0-D15 in Hold after SDCK Rising Edge
D16-D31 in Setup before SDCK Rising Edge
D16-D31 in Hold after SDCK Rising Edge
SDWE Low before SDCK Rising Edge
SDWE High after SDCK Rising Edge
D0-D15 Out Valid before SDCK Rising Edge
1.8V Supply
See
Supply
MCK Maximum Clock
1.8V
5.7
4.9
6.2
5.4
5.4
5.8
5.5
5.7
4.9
4.9
5.3
5.4
5.9
5.4
5.6
4.7
0.9
0.6
0.8
0.7
6.1
5.6
5.2
Clock Waveform
Parameters,” on
6
5
Table 41-6, “Master
page 728
Frequency
Min
Max
Supply
6221G–ATARM–31-Jan-08
Supply
3.3V
.
4.7
5.9
5.2
6.4
6.4
4.8
6.5
4.8
5.9
4.3
6.4
4.9
6.4
4.7
5.8
0.2
1.1
1.2
5.1
6.6
4.2
3.3V
5
4
6
0
Units
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns