ST STM32F20 Series Manuals

1 pdf manual(s) ST STM32F20 Series for free download (Document Types: Application note)

ST STM32F20 Series Application note [PDF] (29 pages)

  • Identifier: id-2260432
  • Brand: ST
  • Device: STM32F20 Series Microcontrollers
  • Type: PDF
  • Key Aspects: Control Panel and Interface Navigation, Recommended Spare Parts List, Device Specifications Overview
  • UPD Date: 19.05.2026
  • Source File: 2027193.pdf
  • Pages: 29
  • Description: Quick start guide for the ST STM32F20 Series.
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  • Contents AN3320 2/29 Doc ID 18267 Rev 2 Contents 1 Power supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1.1 Independent A/D converter supply and reference voltage . . . . . . . . . . . . 7 1.1.2 Battery backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  • AN3320 Contents Doc ID 18267 Rev 2 3/29 5 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.1 Printed circuit board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.2 Component position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.3 Ground and power supply (VSS, VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
  • List of tables AN3320 4/29 Doc ID 18267 Rev 2 List of tables Table 1. Boot modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Table 2. Debug port pin assignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 3. SWJ I/O pin availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  • AN3320 List of figures Doc ID 18267 Rev 2 5/29 List of figures Figure 1. Power supply overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2. Power supply scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 3. Power-on reset/power-down reset waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  • Power supplies AN3320 6/29 Doc ID 18267 Rev 2 1 Power supplies 1.1 Introduction The device requires a 1.8 V to 3.6 V operating voltage supply (VDD), excepted the WLCSP package witch requires 1.65 V to 3.6 V. An embedded regulator is used to supply the internal 1.2 V digital power. The real-time clock (RTC) and backup registers can be powered from the VBAT voltage when the main VDD supply is powered off. Figure 1. Power supply overview 1. VDDA and VSSA mus
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August 2011 Doc ID 18267 Rev 2 1/29 AN3320 Application note Getting started with STM32F20xxx/21xxx MCU hardware development Introduction This application note is intended for system designers who require a hardware implementation overview of the development board features such as the power supply, the clock management, the reset control, the boot mode settings and the debug management. It shows how to use the high-density performance line STM32F20xxx/21xxx product families and describes the minimum hardware resources required to develop an STM32F20xxx/21xxx application. Detailed reference design schematics are also contained in this document with descriptions of the main components, interfaces and modes. www.st.com

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