Datasheet

367
AT32UC3A
27.3 Block Diagram
Figure 27-1. Block Diagram
27.4 I/O Lines Description
Table 27-1. I/O Line Description
Name Description Type Active Level
NCS[3:0] Static Memory Controller Chip Select Lines Output Low
NRD Read Signal Output Low
NWR0/NWE Write 0/Write Enable Signal Output Low
A0/NBS0 Address Bit 0/Byte 0 Select Signal Output Low
NWR1/NBS1 Write 1/Byte 1 Select Signal Output Low
A1/NWR2/NBS2 Address Bit 1/Write 2/Byte 2 Select Signal Output Low
NWR3/NBS3 Write 3/Byte 3 Select Signal Output Low
A[25:2] Address Bus Output
D[31:0] Data Bus I/O
NWAIT External Wait Signal Input Low
SMC
Chip Select
Bus
Matrix
PM
CLK_SMC
SMC
GPIO
Controller
NCS[5:0]
NRD
NWR0/NWE
A0/NBS0
NWR1/NBS1
A1/NWR2/NBS2
NWR3/NBS3
A[25:2]
D[31:0]
NWAIT
User Interface
Peripheral Bus
NCS[5:0]
NRD
NWR0/NWE
A0/NBS0
NWR1/NBS1
A1/NWR2/NBS2
NWR3/NBS3
A[25:2]
D[31:0]
NWAIT
32058K
AVR32-01/12