SPRADD8 November   2024 F29H850TU , F29H859TU-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction to Real-Time Control
  5. 2C29 CPU and Key Features
    1. 2.1 Parallel Architecture and Compiler Entitlement
  6. 3C29 Performance Benchmarks
    1. 3.1 Signal Chain Benchmark with ACI Motor Control
    2. 3.2 Real-time Control and DSP Performance
      1. 3.2.1 Examples and Factors Contributing to Results
        1. 3.2.1.1 Saturation (or Limiting) Example
        2. 3.2.1.2 Dead Zone Example
        3. 3.2.1.3 Space Vector Generation (SVGEN) Example
        4. 3.2.1.4 Software Pipelining
      2. 3.2.2 Customer Control and Math Benchmarks
    3. 3.3 General Purpose Processing (GPP) Performance
      1. 3.3.1 Examples and Factors Contributing to Results
        1. 3.3.1.1 Discontinuity Management
        2. 3.3.1.2 Switch() Example
    4. 3.4 Model-Based Design Benchmarks
    5. 3.5 Application Benchmarks
      1. 3.5.1 Single Phase 7kW OBC Description
      2. 3.5.2 Vienna Rectifier-Based Three Phase Power Factor Correction
      3. 3.5.3 Single-Phase Inverter
      4. 3.5.4 Machine Learning
    6. 3.6 Flash Memory Efficiency
    7. 3.7 Code-size Efficiency
  7. 4Summary
  8. 5References

3.6 Flash Memory Efficiency

Flash execution efficiency is important because not all code can run from zero wait-state memory. On F29H85x at 200MHz, three wait-states are needed for flash access. Further, pre-fetch and block cache mechanisms are available to mitigate the effect of the wait states, and they are enabled. Flash Efficiency Benchmarks shows flash efficiency results in percentages (%) for some benchmarks comparing F29H85x and F2837x (also three wait-states at 200MHz). For many benchmarks, running from flash is akin to running from zero wait-state memory.

Table 3-6 Flash Efficiency Benchmarks
BenchmarkF2837x (%)F29H85x (%)
CFFT8193
FIR9186
IIR (loop)8299
Signal-chain (ACI)9597
Binary LUT search8297
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