User manual

Hardware Description
8
5. Hardware Description
5.1. Mechanics
The StampA5D3x series was designed as a flexible CPU-Module, which can be connected
to base boards via 2x 100-pin fine pitch low profile Hirose ® FX8 connectors.
The size of the StampA5D3x's PCB is only 53.6x42x6.0 mm fitting it in even the smallest
design. While having implemented the sensible CPU, DDRAM and Flash design it still
exports almost all possible CPU-Pins on it's connectors to allow a flexible design on base
boards.
The StampA5D3x series has an on-board Micro SD-Card slot, thus supporting even large
memories needs in its compact design.
5.2. AT91SAMA5D3x Processor Core
The AT91SAMA5D3x runs at 528 MHz with a memory bus frequency of 128 MHz.
Here are some of the most important features of the SAMA5D3x ARM Cortex-A5 core:
• 32 Kbyte Data Cache, 32 Kbyte Instruction Cache
• 2x 32 Bit Memory Bus
• Memory Management Unit (MMU)
• ARM v7-A Thumb2® Instruction Set, ARM Thumb 16-bit and 32-bit Instruction Set
supported
• VFPv4 Floating Point Unit
• ARM Jazelle® Technology for Java® Acceleration
• ICE/JTAG Debug Environment
Some of these features - like Jazelle - are currently not supported by the operating system
of the product.
5.3. Memory
The AT91SAMA5D3x Microcontroller series is equipped with two 32-Bit external bus
interfaces, a DDR2, LPDDR2 and LPDDR interface and a static memory controller (EBI0)
and which includes a NAND flash controller (NFC). DDR2/LPDDR2/LPDDR interface
voltage is 1.8 V and runs at 132 MHz. Chip select zero (NCS0) of EBI0 ist connected to
the optional NOR flash, the NAND flash is connected on chip select three (NCS3). The
EBI0 operates at 3.3V.
The external bus interface is not available on the interface connectors of the StampA5D3x.