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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32L021D4 датащи(PDF) 68 Page - STMicroelectronics |
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STM32L021D4 датащи(HTML) 68 Page - STMicroelectronics |
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68 / 114 page  Electrical characteristics STM32L021x4 68/114 DocID027982 Rev 5 Low-speed internal (LSI) RC oscillator Multi-speed internal (MSI) RC oscillator Table 38. LSI oscillator characteristics Symbol Parameter Min Typ Max Unit fLSI(1) 1. Guaranteed by test in production. LSI frequency 26 38 56 kHz DLSI(2) 2. This is a deviation for an individual part, once the initial frequency has been measured. LSI oscillator frequency drift 0°C ≤ TA ≤ 85°C -10 - 4 % tsu(LSI)(3) 3. Guaranteed by design, not tested in production. LSI oscillator startup time - - 200 µs IDD(LSI)(3) LSI oscillator power consumption - 400 510 nA Table 39. MSI oscillator characteristics Symbol Parameter Condition Typ Max Unit fMSI Frequency after factory calibration, done at VDD= 3.3 V and TA = 25 °C MSI range 0 65.5 - kHz MSI range 1 131 - MSI range 2 262 - MSI range 3 524 - MSI range 4 1.05 - MHz MSI range 5 2.1 - MSI range 6 4.2 - ACCMSI Frequency error after factory calibration - ± 0.5 - % DTEMP(MSI)(1) MSI oscillator frequency drift 0°C ≤ TA ≤ 85 °C - ± 3- % DVOLT(MSI)(1) MSI oscillator frequency drift 1.65 V ≤ VDD ≤ 3.6 V, TA = 25 °C -- 2.5 %/V IDD(MSI)(2) MSI oscillator power consumption MSI range 0 0.75 - µA MSI range 1 1 - MSI range 2 1.5 - MSI range 3 2.5 - MSI range 4 4.5 - MSI range 5 8 - MSI range 6 15 - |
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