Schematic for STM32F03 template board: This is example board for...

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please explain what 3V3 does.

bdr

@copilot please explain what 3V3 does.

copilot

In electronics, "3V3" typically refers to a 3.3-volt power rail or net in a circuit. Here's a breakdown of its role and significance:

Power Supply: The 3.3V rail provides power to components that operate at 3.3 volts. This is a common operating voltage for many modern digital components and integrated circuits, including microcontrollers and logic chips.
Voltage Regulation: In a circuit, a voltage regulator (e.g., a linear regulator or a buck converter) might produce the 3.3V supply from a higher input voltage, such as 5V or 12V.
Compatibility: Many ICs and modules are designed to operate at 3.3V due to low power consumption and compatibility with popular microcontroller architectures like ARM Cortex-M.
Decoupling: A decoupling capacitor is often connected to the 3.3V line and ground to stabilize the voltage and reduce noise or ripple on the power supply line.

If you want to connect the 3.3V line in your schematic, make sure it provides power to all components on the board that require a 3.3V supply, such as microcontrollers, sensors, and other ICs designed for this voltage. If you have a specific connection question, feel free to ask!

bdr

so if I want to add another 3v3 should I add a Terminal? and then how do I make it 3v3?

copilot

Yes, if you want to add another point on your schematic where the 3.3V power can be accessed, you can add a terminal or a power symbol for the 3.3V rail. Here's how you can do it within Flux:

Add a Terminal or Power Port:
- Place a power port or terminal on your schematic.
- Power ports are often represented by standardized symbols, such as a circle or a small rectangular box.
Label the Terminal:
- Label the terminal with "3V3" or "VDD_3V3" to indicate it's a 3.3V power connection.
- This helps in maintaining clarity within the schematic.
Connect to Existing 3.3V Net:
- Connect the new terminal to the existing 3.3V net in your schematic to ensure it's electrically tied to the same power rail.
- If a 3.3V regulator is utilized, ensure the terminal is on the output side of the regulator.

To connect it properly in your project, follow these steps:

Connections:
- Connect the new terminal (let's call it $3V3\_TERMINAL$ ) to the existing 3V3 net by tying it to a point where the 3.3V voltage source or net exists.
In your specific project, it seems the components involved with power might be:
- $U2$ for the microcontroller, which needs power connections.
- Check any power management ICs and ensure proper connection to $3V3$ .

If you're unsure about a specific part or connection, feel free to ask for more details or guidance!

I want to make thiis a 3v3. how do I do that?

bdr

@copilot I want to make thiis a 3v3. how do I do that?

copilot

To convert your STM32-based project to operate at 3.3V, you'll need to ensure a few things are set up correctly:

Power Supply:
- Make sure that any components drawing power from the main voltage rail are compatible with 3.3V.
- Connect a 3.3V voltage regulator to your supply voltage if needed.
Microcontroller Connections:
- Ensure the U2:VDD and U2:VBAT pins are connected to a 3.3V supply.
- Any other components, such as sensors or communication modules, should also be powered from this 3.3V supply if they support it.
External Components:
- Verify all your external components such as R1, C1, and X1 are suitable for 3.3V operation.
Boot0 and Reset:
- Ensure the BOOT0 pin is either pulled to GND or VDD depending on your boot configuration.
- Connect your Reset circuitry to the proper voltage levels.
IO Level Shifting:
- If you have any peripherals that only operate at 5V, you may need level shifters to safely interface with the 3.3V STM32.

To connect the STM32 for 3.3V operation, follow these specific connections:

Connect 3V3:1 to U2:VDD.
Connect 3V3:1 to U2:VBAT.

Please make sure to adjust component values if needed, and let me know if you have any specific configurations or questions!

3v3

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Design Rule Checks

Overlapping Copper

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Component Overrides

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Airwires • 11

	Designators	Net
	GND:GND, Trace dd37:Trace dd37	GND
	Trace f9d9:Trace f9d9, U2:VSS	GND
	U2:VSSA, U2:VSS	GND
	U2:VSS, U2:VSS	GND
	U2:VSS, U2:VSS	GND
	3v3:3v3, U2:VBAT	Net 1
	U2:VDD, U2:VBAT	Net 1
	U2:VDD, U2:VDD	Net 1
	U2:VDD, U2:VDD	Net 1
	3V3:3V3, Trace 7cf0:Trace 7cf0	Net - (976b - a8b7)
	RESET:RESET, Trace 113b:Trace 113b	Net - (a126 - undefined)

Deprecated Rules

Reports nodes that are using rules that are not supported anymore.

Layers with Multiple Fills

Reports layers that have multiple copper fills of different nets. Make sure the Connected Layers rule value of nets with fills is valid.

Floating Copper • 2

	Name
	Trace 4686
	Trace 6b51

Protected Intrusions

Reports intrusions from objects of other nets into polygons or fills that have the Protected layout rule applied.

Manufacturing

Manufacturer Part Number • 6

	Designator	MPN
	C1	None
	C2	None
	C3	None
	C4	None
	R1	None
	X1	None

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Passive Components

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Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
Power Net Portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
jharwinbarrozo
11.4M
Generic Resistor
A generic fixed resistor for rapid developing circuit topology. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0Ω 10Ω 100Ω 1.0kΩ 10kΩ 100kΩ 1.0MΩ 1.1Ω 11Ω 110Ω 1.1kΩ 11kΩ 110kΩ 1.1MΩ 1.2Ω 12Ω 120Ω 1.2kΩ 12kΩ 120kΩ 1.2MΩ 1.3Ω 13Ω 130Ω 1.3kΩ 13kΩ 130kΩ 1.3MΩ 1.5Ω 15Ω 150Ω 1.5kΩ 15kΩ 150kΩ 1.5MΩ 1.6Ω 16Ω 160Ω 1.6kΩ 16kΩ 160kΩ 1.6MΩ 1.8Ω 18Ω 180Ω 1.8KΩ 18kΩ 180kΩ 1.8MΩ 2.0Ω 20Ω 200Ω 2.0kΩ 20kΩ 200kΩ 2.0MΩ 2.2Ω 22Ω 220Ω 2.2kΩ 22kΩ 220kΩ 2.2MΩ 2.4Ω 24Ω 240Ω 2.4kΩ 24kΩ 240kΩ 2.4MΩ 2.7Ω 27Ω 270Ω 2.7kΩ 27kΩ 270kΩ 2.7MΩ 3.0Ω 30Ω 300Ω 3.0KΩ 30KΩ 300KΩ 3.0MΩ 3.3Ω 33Ω 330Ω 3.3kΩ 33kΩ 330kΩ 3.3MΩ 3.6Ω 36Ω 360Ω 3.6kΩ 36kΩ 360kΩ 3.6MΩ 3.9Ω 39Ω 390Ω 3.9kΩ 39kΩ 390kΩ 3.9MΩ 4.3Ω 43Ω 430Ω 4.3kΩ 43KΩ 430KΩ 4.3MΩ 4.7Ω 47Ω 470Ω 4.7kΩ 47kΩ 470kΩ 4.7MΩ 5.1Ω 51Ω 510Ω 5.1kΩ 51kΩ 510kΩ 5.1MΩ 5.6Ω 56Ω 560Ω 5.6kΩ 56kΩ 560kΩ 5.6MΩ 6.2Ω 62Ω 620Ω 6.2kΩ 62KΩ 620KΩ 6.2MΩ 6.8Ω 68Ω 680Ω 6.8kΩ 68kΩ 680kΩ 6.8MΩ 7.5Ω 75Ω 750Ω 7.5kΩ 75kΩ 750kΩ 7.5MΩ 8.2Ω 82Ω 820Ω 8.2kΩ 82kΩ 820kΩ 8.2MΩ 9.1Ω 91Ω 910Ω 9.1kΩ 91kΩ 910kΩ 9.1MΩ #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF 10pF 100pF 1000pF 0.01uF 0.1uF 1.0uF 10uF 100uF 1000uF 10,000uF 1.1pF 11pF 110pF 1100pF 1.2pF 12pF 120pF 1200pF 1.3pF 13pF 130pF 1300pF 1.5pF 15pF 150pF 1500pF 0.015uF 0.15uF 1.5uF 15uF 150uF 1500uF 1.6pF 16pF 160pF 1600pF 1.8pF 18pF 180pF 1800pF 2.0pF 20pF 200pF 2000pF 2.2pF 22pF 20pF 2200pF 0.022uF 0.22uF 2.2uF 22uF 220uF 2200uF 2.4pF 24pF 240pF 2400pF 2.7pF 27pF 270pF 2700pF 3.0pF 30pF 300pF 3000pF 3.3pF 33pF 330pF 3300pF 0.033uF 0.33uF 3.3uF 33uF 330uF 3300uF 3.6pF 36pF 360pF 3600pF 3.9pF 39pF 390pF 3900pF 4.3pF 43pF 430pF 4300pF 4.7pF 47pF 470pF 4700pF 0.047uF 0.47uF 4.7uF 47uF 470uF 4700uF 5.1pF 51pF 510pF 5100pF 5.6pF 56pF 560pF 5600pF 6.2pF 62pF 620pF 6200pF 6.8pF 68pF 680pF 6800pF 0.068uF 0.68uF 6.8uF 68uF 680uF 6800uF 7.5pF 75pF 750pF 7500pF 8.2pF 82pF 820pF 8200pF 9.1pF 91pF 910pF 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Inductor
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
jharwinbarrozo
15.1k
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius
RMCF0805JT47K0
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
jharwinbarrozo
1.2M
875105359001
10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
jharwinbarrozo
1.1M

Inspect

STM32F03 template board

Controls

Properties

Designator Prefix

License

https://creativecommons.org/licenses/by/4.0/

Availability & Pricing

Distributor		Qty 1
	Arrow	$3.05–$5.31
	Digi-Key	$6.11
	LCSC	$0.92
	Mouser	$5.43
	Verical	$1.24–$5.31

Assets

Thumbnail

STM32F03 template board.png

id=STM32F03 template board

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