PM0056 datasheet(11/156 Pages) STMICROELECTRONICS

11 / 156 page

DocID15491 Rev 5

11/156

PM0056

About this document

For system trace the processor integrates an Instrumentation Trace Macrocell (ITM)

alongside data watchpoints and a profiling unit. To enable simple and cost-effective profiling

of the system events these generate, a Serial Wire Viewer (SWV) can export a stream of

software-generated messages, data trace, and profiling information through a single pin.

The optional Embedded Trace Macrocell™ (ETM) delivers unrivalled instruction trace

capture in an area far smaller than traditional trace units, enabling many low cost MCUs to

implement full instruction trace for the first time.

1.3.3

Cortex-M3 processor features and benefits summary

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Tight integration of system peripherals reduces area and development costs

•

Thumb instruction set combines high code density with 32-bit performance

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Code-patch ability for ROM system updates

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Power control optimization of system components

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Integrated sleep modes for low power consumption

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Fast code execution permits slower processor clock or increases sleep mode time

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Hardware division and fast multiplier

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Deterministic, high-performance interrupt handling for time-critical applications

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Extensive debug and trace capabilities:

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Serial Wire Debug and Serial Wire Trace reduce the number of pins required for

debugging and tracing.

PM0056 Datasheet(PDF) 11 Page - STMicroelectronics