Atmel AVR XMEGA AU series

485
8331B–AVR–03/12
Atmel AVR XMEGA AU
Figure 36-42. Burst access within a single page
** 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.
Bank Adr
Row Adr Col Adr
Burst access within a single page
0x0
Col Adr 0x400
Col Adr
D[7:0] D[7:0]D[7:0]
Precharge All Banks Active Read NOP* NOP****
Data sampled
NOP** Clock suspend*** Read
Data sampled
NOP** Clock suspend*** Read
Data sampled
NOP** Clock suspend***
CLK
CKE
CAS
RAS
DQM
BA[1:0]
A[11:0]
D
Clk
PER2
WE
CS