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STM32F469AE Datasheet(PDF) 90 Page - STMicroelectronics |
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STM32F469AE Datasheet(HTML) 90 Page - STMicroelectronics |
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90 / 220 page  Electrical characteristics STM32F469xx 90/220 DS11189 Rev 7 5.1.6 Power supply scheme Figure 24. Power supply scheme 1. To connect BYPASS_REG and PDR_ON pins, refer to Section 2.19 and Section 2.20. 2. The two 2.2 µF ceramic capacitors on VCAP_1 and VCAP_2 should be replaced by two 100 nF decoupling capacitors when the voltage regulator is OFF. 3. The 4.7 µF ceramic capacitor must be connected to one of the VDD pin. 4. VDDA and VSSA must be connected to VDD and VSS, respectively. Caution: Each power supply pair (VDD/VSS, VDDA/VSSA ...) must be decoupled with filtering ceramic capacitors as shown above. These capacitors must be placed as close as possible to, or below, the appropriate pins on the underside of the PCB to ensure good operation of the device. It is not recommended to remove filtering capacitors to reduce PCB size or cost. This might cause incorrect operation of the device. MS38256V1 Backup circuitry (OSC32K,RTC, Wakeup logic Backup registers, backup RAM) Kernel logic (CPU, digital & RAM) Analog: RCs, PLL,.. Power switch VBAT GPIOs OUT IN 20 × 100 nF + 1 × 4.7 μF VBAT = 1.65 to 3.6 V Voltage regulator VDDA ADC IO Logic VDD 100 nF + 1 μF Flash memory VCAP_1 VCAP_2 2 × 2.2 μF BYPASS_REG PDR_ON Reset controller VDD 1/2/...19/20 VSS 1/2/...19/20 VDD VREF+ VREF- VSSA VREF 100 nF + 1 μF OTG-FS PHY VDDUSB 100 nF VDDUSB DSI PHY DSI Voltage regulator VDDDSI VCAPDSI VDD12DSI VSSDSI 2.2 μF |
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