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数据搜索系统，热门电子元器件搜索 |
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AN910 数据表(PDF) 1 Page - STMicroelectronics |
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AN910 数据表(HTML) 1 Page - STMicroelectronics |
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1 / 51 page  AN910/1104 1/51 Rev. 2.0 AN910 APPLICATION NOTE ST7 AND ST9 PERFORMANCE BENCHMARKING INTRODUCTION STMicroelectronics has developed a set of test routines related to 8-bit and low-end 16-bit microcontroller applications to evaluate computing performance and interrupt processing performance of microcontroller cores. These routines have been implemented on ST7 and ST9 Microcontroller Units (MCUs) as well as several MCUs available on the market. The routines have been written in assembler language to optimize their implementation and focus on core performance, without being dependent upon compiler code transformation. For each test, the two parameters of interest are execution time and code size. Timings have been either measured whenever possible, or theoretically calculated when there was no other alternative. In most cases, programs have really run and execution times have actually been measured, so that assembly sources should not contain implementation errors and results can be considered as correct and reliable. The results of this study point out the capability of the ST9+ to compete with 16-bit MCUs on 8-bit and low-end 16-bit applications and confirms its position of high-end 8/16-bit MCU. It also confirms the ST7 as an outstanding 8-bit MCU. The first four sections provide synthetical information: 1. Overview of the Test Routines on page 2 2. Overview of the MCU cores on page 3 3. Benchmark results on page 4 4. Result analysis on page 11 More detailed information is provided in the appendixes: 5. Description of MCU work environments on page 17 6. Complete numerical results on page 21 7. MCU Core architecture analysis on page 25 8. Description of the test routines on page 43 9. Measurement proceeding and calculation on page 46 1 |
类似零件编号 - AN910 |
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类似说明 - AN910 |
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