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AM186 датащи(PDF) 65 Page - Advanced Micro Devices |
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AM186 датащи(HTML) 65 Page - Advanced Micro Devices |
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65 / 112 page ![]() Am186TMER and Am188TMER Microcontrollers Data Sheet 65 DRAF T Table 15 shows typical maximum ambient temperatures in degrees Centigrade for a PQFP package used with a 4-layer to 6-layer board. The typical ambient temperatures are based on a 100-degree Centigrade maximum case temperature. Figure 20 illustrates the typical temperatures in Table 15. Table 15. Typical Ambient Temperatures for PQFP with Four-Layer to Six-Layer Board Figure 20. Typical Ambient Temperatures for PQFP with Four-Layer to Six-Layer Board Microcontroller Speed Typical Power (Watts) Linear Feet per Minute Airflow 0 fpm 200 fpm 400 fpm 600 fpm 50 MHz 0.662 88.0 89.4 90.7 92.0 40 MHz 0.522 90.6 91.6 92.7 93.7 33 MHz 0.432 92.3 93.1 93.9 94.9 25 MHz 0.342 93.8 94.5 95.2 95.9 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: 87 89 91 93 95 97 q q q q I I I I x x x x s s s s 88 90 92 94 96 |
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