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June 13, 2026
Question

Core supply for STM32H563MIY3Q

  • June 13, 2026
  • 0 replies
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  1. STM32H563MIY3Q is not available in LDO, is it available in Bypass mode ? Can an external LDO be used to power the core?
  2. Since there is no internal LDO inside the chip, is it unnecessary to keep the external Core voltage at 1.1 V before the VDD reach the POR threshold level? Do VDD and external core supply have timing sequence constraints?
  3. If an external LDO is used, can the VDDSMPS pin be connected to GND? Is there a reference schematic available?
  4. How should the software be configured when we use an external LDO for core power supply on this chip?