AN4206 datasheet(29/34 Pages) STMICROELECTRONICS

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DocID023944 Rev 4

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AN4206

Reference design

7.2

Component references

Table 5. Mandatory components

Component

Value

Reference

Quantity

Comments

Microcontroller

STM32F303VCT/

STM32F358VCT6

STM32F373VCT6/

STM32F378VCT6

100-pin package

Capacitor

100 nF

C3/C5/C7/C9

4 for STM32F303

3 for STM32F373

3 for STM32F378

Ceramic capacitors (decoupling

capacitors)

Capacitor

4.7 µF

Ceramic capacitor (decoupling capacitor)

Capacitor

1 µF

C2/C11

Used for VDDA and VREF+

Capacitor

10 nF

C4/C13

Ceramic capacitor (decoupling capacitor)

Capacitor

10 nF

C8/C12/C13

Ceramic capacitors for VDDSDx and

VREFSD+ (STM32F373 only)

Capacitor

1 µF

C6/C10/C19

Used for VDDSDx and VREFSD+

(STM32F373 only)

Table 6. Optional components

Component

Value

Reference

Quantity

Comments

Resistor

390



Used for HSE: the value depends on the crystal

characteristics.

This value is given only as a typical example.

Resistor



Used for LSE: the value depends on the crystal

characteristics.

This resistor value is given only as a typical

example.

Resistor

10 K



R5/R12/R13/R14

Pull up and pull down for JTAG and Boot mode.

Capacitor

100 nF

C16

Ceramic capacitors for RESET button.

Capacitor

10 pF

C17/C18

Used for LSE: the value depends on the crystal

characteristics.

Capacitor

20 pF

C14/C15

Used for HSE: the value depends on the crystal

characteristics.

Quartz

8 MHz

Used for HSE

Quartz

32 kHz

Used for LSE

Battery

3V3

BT1

If no external battery is used in the application, it

is recommended to connect VBAT externally to

VDD

Switch

SW1

Used to select the correct boot mode.

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