AT32UC3C2512C-A2UT【PDF 30/110 页】IC MCU AVR32 512K FLASH 64TQFP

32117DS–AVR-01/12

AT32UC3C

single cycle. Load and store instructions have several different formats in order to reduce code

size and speed up execution.

The register file is organized as sixteen 32-bit registers and includes the Program Counter, the

Link Register, and the Stack Pointer. In addition, register R12 is designed to hold return values

from function calls and is used implicitly by some instructions.

4.3

The AVR32UC CPU

The AVR32UC CPU targets low- and medium-performance applications, and provides an

advanced On-Chip Debug (OCD) system, no caches, and a Memory Protection Unit (MPU). A

hardware Floating Point Unit (FPU) is also provided through the coprocessor instruction space.

Java acceleration hardware is not implemented.

AVR32UC provides three memory interfaces, one High Speed Bus master for instruction fetch,

one High Speed Bus master for data access, and one High Speed Bus slave interface allowing

other bus masters to access data RAMs internal to the CPU. Keeping data RAMs internal to the

CPU allows fast access to the RAMs, reduces latency, and guarantees deterministic timing.

Also, power consumption is reduced by not needing a full High Speed Bus access for memory

accesses. A dedicated data RAM interface is provided for communicating with the internal data

RAMs.

A local bus interface is provided for connecting the CPU to device-specific high-speed systems,

such as floating-point units and I/O controller ports. This local bus has to be enabled by writing a

one to the LOCEN bit in the CPUCR system register. The local bus is able to transfer data

between the CPU and the local bus slave in a single clock cycle. The local bus has a dedicated

memory range allocated to it, and data transfers are performed using regular load and store

instructions. Details on which devices that are mapped into the local bus space is given in the

CPU Local Bus section in the Memories chapter.

Figure 4-1 on page 27 displays the contents of AVR32UC.

发布紧急采购，3分钟左右您将得到回复。

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购