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About the Processor

The Cortex-M4 processor is a low-power processor that features low gate count,

low interrupt latency, and low-cost debug. The Cortex-M4 with FPU is a

processor with the same capability as the Cortex-M4 processor and includes

floating-point arithmetic functionality. Both processors are intended for deeply

embedded applications that require fast interrupt response features.

The Cortex-M4 processor includes:

A processor core

A Nested Vectored Interrupt Controller (NVIC) closely integrated with the processor

core to achieve low latency interrupt processing

Multiple high-performance bus interfaces

A low-cost debug solution with the optional ability to:

— Implement breakpoints and code patches

— Implement watchpoints, tracing, and system profiling

— Support printf style debugging

— Bridge to a Trace Port Analyzer (TPA)

An optional Memory Protection Unit (MPU)

A Floating Point Unit (FPU) in the Cortex-M4 with FPU processor

Block Diagram

Figure 2: Cortex-M4 processor components