AT32UC3A
Table 5-1.
Signal Name
Signal Description List
Function
Type
External Bus Interface - HEBI
Active
Level
Comments
ADDR0 - ADDR23
CAS
DATA0 - DATA15
NCS0 - NCS3
NRD
NWAIT
NWE0
NWE1
NWE3
RAS
SDA10
SDCK
SDCKE
SDCS0
SDWE
Address Bus
Column Signal
Data Bus
Chip Select
Read Signal
External Wait Signal
Write Enable 0
Write Enable 1
Write Enable 3
Row Signal
SDRAM Address 10 Line
SDRAM Clock
SDRAM Clock Enable
SDRAM Chip Select
SDRAM Write Enable
Output
Output
I/O
Output
Output
Input
Output
Output
Output
Output
Output
Output
Output
Output
Output
Low
Low
Low
Low
Low
Low
Low
Low
Low
Low
General Purpose Input/Output 2 - GPIOA, GPIOB, GPIOC
P0 - P31
P0 - P31
P0 - P5
P0 - P31
Parallel I/O Controller GPIOA
Parallel I/O Controller GPIOB
Parallel I/O Controller GPIOC
Parallel I/O Controller GPIOX
I/O
I/O
I/O
I/O
Serial Peripheral Interface - SPI0, SPI1
MISO
MOSI
NPCS0 - NPCS3
SCK
Master In Slave Out
Master Out Slave In
SPI Peripheral Chip Select
Clock
I/O
I/O
I/O
Output
Synchronous Serial Controller - SSC
RX_CLOCK
SSC Receive Clock
I/O
Low
10
32058FS–AVR32–08/08
ATMEL [ ATMEL CORPORATION ]
