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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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STR91XF 数据表(PDF) 51 Page - STMicroelectronics |
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STR91XF 数据表(HTML) 51 Page - STMicroelectronics |
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51 / 72 page  STR91xF Electrical characteristics 51/72 Table 8. AC electrical characteristics 6.6 RESET_INn and power-on-reset characteristics VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C unless otherwise specified. Table 9. RESET_INn and Power-On-Reset Characteristics Symbol Parameter Test Conditions Value Unit Min Typ Max fMSTR CCU Master Clk Output 32.768 96,000 kHz fCPUCLK CPU Core Frequency Executing from SRAM 96 MHz Executing from Flash 96 MHz fPCLK Peripheral Clock for APB 48 MHz fHCLK Peripheral Clock for AHB 96 MHz fOSC Clock Input 4 25 MHz fFMICLK FMI Flash Bus clock (internal clock) 96 MHz fBCLK External Memory Bus clock (internal clock) 66 MHz fRTC RTC Clock 32.768 kHz fEMAC EMAC PHY Clock 25 MHz fUSB USB Clock 48 MHz Symbol Parameter Test Conditions Value Unit Min Typ Max tRINMIN RESET_INn Valid Active Low 100 ns tPOR Power-On-Reset Condition duration VDDQ,VDD ramp time is less than 10ms 10 ms tRSO RESET_OUT Duration (Watchdog reset) one PCLK ns |
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