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STM32F207 Datasheet(PDF) 117 Page - STMicroelectronics |
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STM32F207 Datasheet(HTML) 117 Page - STMicroelectronics |
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117 / 163 page ![]() STM32F205xx, STM32F207xx Electrical characteristics Doc ID 15818 Rev 7 117/163 5.3.24 Embedded reference voltage The parameters given in Table 66 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 10. 5.3.25 FSMC characteristics Asynchronous waveforms and timings Figure 54 through Figure 57 represent asynchronous waveforms and Table 67 through Table 70 provide the corresponding timings. The results shown in these tables are obtained with the following FSMC configuration: ● AddressSetupTime = 0 ● AddressHoldTime = 1 ● DataSetupTime = 1 Table 66. Embedded internal reference voltage Symbol Parameter Conditions Min Typ Max Unit VREFINT Internal reference voltage –40 °C < TA < +105 °C 1.18 1.21 1.24 V TS_vrefint (1) 1. Shortest sampling time can be determined in the application by multiple iterations. ADC sampling time when reading the internal reference voltage 10 - - µs VRERINT_s (2) 2. Guaranteed by design, not tested in production. Internal reference voltage spread over the temperature range VDD = 3 V - 3 5 mV TCoeff (2) Temperature coefficient - 30 50 ppm/°C tSTART (2) Startup time - 6 10 µs |
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