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STM32WB55 Datasheet(PDF) 82 Page - STMicroelectronics |
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STM32WB55 Datasheet(HTML) 82 Page - STMicroelectronics |
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82 / 193 page  Electrical characteristics STM32WB55xx STM32WB35xx 82/193 DS11929 Rev 11 6.1.6 Power supply scheme Figure 16. Power supply scheme (all packages except UFBGA129 and WLCSP100) 1. The value of L1 depends upon the frequency, as indicated in Table 6. 2. VREF+ connection is not available on UFQFPN48 package. MS53167V5 VDD Backup circuitry (LSE, RTC and backup registers) Kernel logic (CPU, digital and memories IO logic IN OUT Regulator GPIOs 1.55 V to 3.6 V n x 100 nF + 1 x 4.7 μF n x VDD VBAT VCORE Power switch VDDIO1 ADC COMPs VREF+ (2) VREF- VDDA 10 nF + 1 μF VDDA SMPS Regulator VDDSMPS VLXSMPS VFBSMPS VSSSMPS 4.7 μF VDD L1 (1) Exposed pad 4.7 μF To all modules SMPS USB transceiver Radio 100 nF VDDUSB 100 nF + 100 pF VDDRF VSSRF VDD VDD VSS 100 nF + 1 μF VSS VSS VREF |
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