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Embedded Systems - Classification Based On Complexity & Performance

The document classifies embedded systems into four categories: by generation, complexity/performance, deterministic behavior, and triggering. It discusses embedded systems from small to large scale based on components, as well as categorizing systems as soft or hard real-time based on consequences of missed deadlines.

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venkata satish
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166 views1 page

Embedded Systems - Classification Based On Complexity & Performance

The document classifies embedded systems into four categories: by generation, complexity/performance, deterministic behavior, and triggering. It discusses embedded systems from small to large scale based on components, as well as categorizing systems as soft or hard real-time based on consequences of missed deadlines.

Uploaded by

venkata satish
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Fourth Generation: Embedded Systems built around System on Chips (SoC’s), Re-

configurable processors and multicore processors. It brings high performance, tight


integration and miniaturization into the embedded device market
EX Smart phone devices, MIDs etc.

2. Embedded Systems - Classification based on Complexity & Performance



Small Scale: The embedded systems built around low performance and low cost 8 or 16
bit microprocessors/ microcontrollers. It is suitable for simple applications and where
performance is not time critical. It may or may not contain OS.


Medium Scale: Embedded Systems built around medium performance, low cost 16 or 32
bit microprocessors / microcontrollers or DSPs. These are slightly complex in hardware
and firmware. It may contain GPOS/RTOS.


Large Scale/Complex: Embedded Systems built around high performance 32 or 64 bit
RISC processors/controllers, RSoC or multi-core processors and PLD. It requires
complex hardware and software. These system may contain multiple
processors/controllers and co-units/hardware accelerators for offloading the processing
requirements from the main processor. It contains RTOS for scheduling, prioritization
and management.

3. Embedded Systems - Classification Based on deterministic behavior: It is applicable for


Real Time systems. The application/task execution behavior for an embedded system can be
either deterministic or non-deterministic

These are classified in to two types

1. Soft Real time Systems: Missing a deadline may not be critical and can be
tolerated to a certain degree

2. Hard Real time systems: Missing a program/task execution time deadline can have
catastrophic consequences (financial, human loss of life, etc.)

4. Embedded Systems - Classification Based on Triggering:

These are classified into two types

1. Event Triggered : Activities within the system (e.g., task run-times) are dynamic and
depend upon occurrence of different events .

2. Time triggered: Activities within the system follow a statically computed schedule (i.e.,
they are allocated time slots during which they can take place) and thus by nature are
predictable.

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