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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM8S103F2 датащи(PDF) 105 Page - STMicroelectronics |
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STM8S103F2 датащи(HTML) 105 Page - STMicroelectronics |
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105 / 117 page  Reference document 12.1 JESD51-2 integrated circuits thermal test method environment conditions - natural convection (still air). Available from www.jedec.org. Selecting the product temperature range 12.2 When ordering the microcontroller, the temperature range is specified in the order code. The following example shows how to calculate the temperature range needed for a given application. Assuming the following application conditions: • Maximum ambient temperature TAmax= 75 °C (measured according to JESD51-2) • IDDmax = 8 mA, VDD = 5 V • Maximum 20 I/Os used at the same time in output at low level with IOL = 8 mA, VOL= 0.4 V PINTmax = 8 mA x 5 V = 400 mW Amax • PDmax = 400 mW + 64 mW Thus: PDmax = 464 mW TJmax for LQFP32 can be calculated as follows, using the thermal resistance ΘJA: TJmax = 75 °C + (60 °C/W x 464 mW) = 75 °C + 27.8 °C = 102.8 °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. 105/117 DocID15441 Rev 9 Thermal characteristics STM8S103K3 STM8S103F3 STM8S103F2 |
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