Datasheet

344
8331B–AVR–03/12
Atmel AVR XMEGA AU
Table 27-4. Pin-out SRAM.
PORT PIN SRAM
3PORT
ALE1
SRAM
3PORT
ALE12
SRAM
4PORT
ALE2
SRAM
4PORT
NOALE
PORT3 7:0
– –
A[15:8] A[15:8]
PORT2 7:0 A[7:0]/
A[15:8]
A[7:0]/
A[15:8]/
A[23:16]
A[7:0]/
A[23:16]
A[7:0]
PORT1 7:0 D[7:0] D[7:0] D[7:0] D[7:0]
PORT0
7:4 CS
[3:0]
(A[19:16])
CS[3:0] CS[3:0] CS[3:0]
(A[21:18])
3
–
ALE2 ALE2 A17
2 ALE1 ALE1
–
A16
1RE
RE RE RE
0WE WE WE WE
Table 27-5. Pin-out SRAM LPC.
PORT PIN SRAM LPC
2PORT
ALE1
SRAM LPC
3PORT/4PORT
ALE1
SRAM
2/3/4PORT
ALE12
PORT3 7:0
– – –
PORT2 7:0
–
A[15:8]
–
PORT1 7:0 D[7:0]/
A[7:0]
D[7:0]/
A[7:0]
D[7:0]/
A[7:0]/
A[15:8]
PORT0
7:4 CS
[3:0] CS[3:0]
(A[19:16])
CS[3:0]
(A[19:16])
3
– –
ALE2
2 ALE1 ALE1
–
1RE RE RE
0WE WE WE