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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F334X4 датащи(PDF) 112 Page - STMicroelectronics |
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STM32F334X4 датащи(HTML) 112 Page - STMicroelectronics |
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112 / 115 page  Package information STM32F334x4 STM32F334x6 STM32F334x8 112/115 DocID025409 Rev 5 Example: high-performance application Assuming the following application conditions: Maximum ambient temperature TAmax = 82 °C (measured according to JESD51-2), IDDmax = 50 mA, VDD = 3.5 V, maximum 20 I/Os used at the same time in output at low level with IOL = 8 mA, VOL= 0.4 V and maximum 8 I/Os used at the same time in output mode at low level with IOL = 20 mA, VOL= 1.3 V PINTmax = 50 mA × 3.5 V = 175 mW PIOmax = 20 × 8 mA × 0.4 V + 8 × 20 mA × 1.3 V = 272 mW This gives: PINTmax = 175 mW and PIOmax = 272 mW PDmax = 175 + 272 = 447 mW Thus: PDmax = 447 mW Using the values obtained in Table 78 TJmax is calculated as follows: – For LQFP64, 45 °C/W TJmax = 82 °C + (45 °C/W × 447 mW) = 82 °C + 20.1 °C = 102.1 °C This is within the range of the suffix 6 version parts (–40 < TJ < 105 °C). In this case, parts must be ordered at least with the temperature range suffix 6 (see Table 79: Ordering information scheme). |
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