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AM186 датащи(PDF) 63 Page - Advanced Micro Devices |
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AM186 датащи(HTML) 63 Page - Advanced Micro Devices |
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63 / 112 page ![]() Am186TMER and Am188TMER Microcontrollers Data Sheet 63 DRAF T Table 13 shows typical maximum ambient temperatures in degrees Centigrade for a PQFP package used with a 2-layer board. The typical ambient temperatures are based on a 100-degree Centigrade maximum case temperature. Figure 18 illustrates the typical temperatures in Table 13. Table 13. Typical Ambient Temperatures for PQFP with Two-Layer Board Figure 18. Typical Ambient Temperatures for PQFP with Two-Layer Board Microcontroller Speed Typical Power (Watts) Linear Feet per Minute Airflow 0 fpm 200 fpm 400 fpm 600 fpm 50 MHz 0.662 74.81 78.8 81.43 82.8 40 MHz 0.522 80.2 83.3 85.4 86.5 33 MHz 0.432 83.56 86.2 87.9 88.7 25 MHz 0.342 87.0 89.1 90.4 91.1 Airflow (Linear Feet Per Minute) 0 fpm 200 fpm 400 fpm 600 fpm s 50 MHz x 25 Mhz H 33 MHz q 40 MHz Legend: 74 78 82 86 90 94 q q q q I I I I x x x x s s s s 76 80 84 88 92 |
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