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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32WL55JC датащи(PDF) 64 Page - STMicroelectronics |
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STM32WL55JC датащи(HTML) 64 Page - STMicroelectronics |
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64 / 147 page  Electrical characteristics STM32WL55/54xx 64/147 DS13293 Rev 2 5.1.6 Power supply scheme Figure 13. Power supply scheme Caution: Each power supply pair (such as VDD/VSS or VDDA/VSS) must be decoupled with filtering ceramic capacitors as shown in the above figure. These capacitors must be placed as close as possible to (or below) the appropriate pins on the underside of the PCB to ensure the good functionality of the device. Note: For the UFQFPN48 and WLCSP59 package, VREF+ is internally connected to VDDA. MSv64325V5 VDD Backup circuitry (LSE, RTC and backup registers) Kernel logic (CPU, digital and memories I/O logic IN LPR GPIOs 1.55 to 3.6 V n x 100 nF + 1 x 4.7 μF n x VSS n x VDD VBAT VCORE Power switch ADC DAC COMPs VREFBUF VREF+ VREF- VDDA 10 nF + 1 μF VDDA VSS VREF 100 nF 1 μF SMPS MR VDDSMPS VLXSMPS VFBSMPS VSSSMPS 4.7 μF VDD Exposed pad 470 nF To all modules (VSS/VSSRF) LDO/SMPS RFLDO VDDRF1V5 REG PA VDDPA (= VDDRF1V5 or VDDSMPS) VDDRF 15 μH VBAT Sub-GHz radio OUT |
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