Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet

Product codes

AT32UC3A3-XPLD

32072H–AVR32–10/2012

AT32UC3A3

Memories

5.1

Embedded Memories

•

Internal High-Speed Flash

– 256KBytes (AT32UC3A3256/S)

– 128Kbytes (AT32UC3A3128/S)

– 64Kbytes (AT32UC3A364/S)

• 0 wait state access at up to 42MHz in worst case conditions

• 1 wait state access at up to 84MHz in worst case conditions

• Pipelined Flash architecture, allowing burst reads from sequential Flash locations, hiding

penalty of 1 wait state access

• Pipelined Flash architecture typically reduces the cycle penalty of 1 wait state operation

to only 15% compared to 0 wait state operation

• 100 000 write cycles, 15-year data retention capability

• Sector lock capabilities, Bootloader protection, Security Bit

• 32 Fuses, Erased During Chip Erase

• User page for data to be preserved during Chip Erase

•

Internal High-Speed SRAM

– 64KBytes, Single-cycle access at full speed on CPU Local Bus and accessible through the

High Speed Bud (HSB) matrix

– 2x32KBytes, accessible independently through the High Speed Bud (HSB) matrix

5.2

Physical Memory Map

The System Bus is implemented as a bus matrix. All system bus addresses are fixed, and they
are never remapped in any way, not even in boot.

Note that AVR32 UC CPU uses unsegmented translation, as described in the AVR32UC Techni-
cal Architecture Manual.

The 32-bit physical address space is mapped as follows:

Table 5-1.

AT32UC3A3A4 Physical Memory Map

Device

Start
Address

Size

AT32UC3A3256S
AT32UC3A3256

AT32UC3A4256S

AT32UC3A4256

AT32UC3A3128S
AT32UC3A3128

AT32UC3A4128S

AT32UC3A4128

AT32UC3A364S
AT32UC3A364

AT32UC3A464S

AT32UC3A464

Embedded CPU SRAM

0x00000000

64KByte

Embedded Flash

0x80000000

256KByte

128KByte

64KByte

EBI SRAM CS0

0xC0000000

16MByte

EBI SRAM CS2

0xC8000000

16MByte

EBI SRAM CS3

0xCC000000

16MByte

EBI SRAM CS4

0xD8000000

16MByte

EBI SRAM CS5

0xDC000000

16MByte

EBI SRAM CS1
/SDRAM CS0

0xD0000000

128MByte

USB Data

0xE0000000

64KByte