486
8331B–AVR–03/12
Atmel AVR XMEGA AU
Figure 36-43.
Burst access crossing page boundary
** NOP is only inserted for CAS3
**** The number of NOPs is equal to WRDLY[1:0] + 1 (WRDLY = 0 is shown)
***** The number of NOPs is equal to RPDLY[1:0] (RPDLY = 1 is shown)
* The number of NOPs is equal to ROWCOLDLY[2:0] (ROWCOLDLY = 1 is shown)
*** Clock suspended for 1 cycle when EBI is running at 1x and 1 or 2 cycles when EBI
is running at 2x, to enable sampling of data on the positive edge of the 1x clock.
Burst access crossing page boundary
Bank Adr
Row Adr
Col Adr
0x0
Col Adr
0x400
Col Adr
D[7:0]
D[7:0]
D[7:0]
P
rec
har
ge
Al
l B
ank
s
Ac
tive
Re
ad
NO
P*
NO
P*
**
*
Da
ta
sam
ple
d
NO
P*
*
Cl
o
ck
su
sp
en
d*
**
Re
ad
Da
ta
sam
ple
d
NO
P*
*
Cl
o
ck
su
sp
en
d*
**
Re
ad
Da
ta
sam
ple
d
NO
P*
*
Cl
o
ck
su
sp
en
d*
**
0x400
0x0
Bank Adr
P
rec
har
ge
Al
l B
ank
s
NO
P*
**
**
Ac
tive
NO
P*
CLK
CKE
CAS
RAS
DQM
BA[1:0]
A[11:0]
D
Clk
PER2
WE
CS
