frukolosko/arduino-pro-mini-328-3p3v8-mhz-9eza: Arduino that runs an 8 MHz bootloader on a super...

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list all ICs and the decoupling capacitors attached to each. Ensure to include a...

frukolosko

@copilot list all ICs and the decoupling capacitors attached to each. Ensure to include all ICs present in the design, including digital ICs, power converters, LDOs, etc. For every IC, clearly state:

What power net the decoupling capacitors are attached to. What is the stated voltage of that net.
The voltage rating and value of the attached decoupling capacitors.
Signal with the expression “[WARNING]” if any of the following conditions are met: no decoupling capacitors are attached; the voltage of the power net is higher than the voltage rating of the capacitor; No voltage range was stated for the capacitor. Give a separate “[WARNING]” for each condition. Signal with the expression “[OK]” if none of those conditions are met
Express the result in a markdown-formatted table

copilot

Here are the ICs present in the project and the details of their decoupling capacitors:

1. IC Designator: U1

MPN: ATMEGA328-AU
Manufacturer: Microchip

Decoupling Capacitors Attached: C1, C3

C1: 0.1 µF (The voltage rating is not given in the project description)
C3: 0.1 µF (The voltage rating is not given in the project description)

The power net for IC U1 is labeled as "VCC (Net ID: 7ea11a17c120df750eca5803fe690489)". The voltage of this power net is not provided in the project description.

[WARNING] No voltage range was stated for capacitor C1. [WARNING] No voltage range was stated for capacitor C3. [WARNING] The voltage of the power net is not provided.

2. IC Designator: U2

MPN: MIC5205YM5-TR
Manufacturer: Microchip

Decoupling Capacitor Attached: C4

C4: 10 µF (The voltage rating is not given in the project description)

The power net for IC U2 is labeled as "RAW (Net ID: ce73bcf4cad67fe2a1f73439920a57d0)". The voltage of this power net is not provided in the project description.

[WARNING] No voltage range was stated for capacitor C4.

[WARNING] The voltage of the power net is not provided.

3. IC Designator: U3

MPN: MCP2515T-I/SO
Manufacturer: Microchip

This IC does not have any decoupling capacitors attached directly.

[WARNING] No decoupling capacitors are attached to this IC.

Table

IC Designator	MPN	Manufacturer	Capacitor Voltage Value and Rating	Power Net	Status
U1	ATMEGA328-AU	Microchip	C1: 0.1 µF (Voltage rating not given)C3: 0.1 µF (Voltage rating not given)	VCC (Voltage not given)	[WARNING]
U2	MIC5205YM5-TR	Microchip	C4: 10 µF (Voltage rating not given)	RAW (Voltage not given)	[WARNING]
U3	MCP2515T-I/SO	Microchip	No decoupling capacitors attached	N/A	[WARNING]

Check that all reset/enable have an external pull-up or pull-down resistors. Rep...

frukolosko

@copilot Check that all reset/enable have an external pull-up or pull-down resistors. Report action items in an ordered list.

copilot

To check the presence of pull-up or pull-down resistors on all reset/enable lines, I would review the specific nets that the reset/enable pins belong to. The components in question that require such inspection are U1 with the ~RESET~/PC6 pin as per datasheet excerpt 9d047b51c69ef44f8af333b7547b069802056dcf9c3b10c0389dca2e96faf7a8 and U2 with the EN (Enable) pin as per datasheet excerpt 9663c5c839f611085dba4863b7c007a750dbdda7a3c811512023825dcbfe72e2.

Looking into the provided project schematic:

For component U1, the ~RESET~/PC6 pin is linked to the net 21fb00a7faf72c012f98a381faf865ae, which includes R2:(P2). So a pull-up resistor R2 is connected.
For component U2, the EN pin is directly tied to the IN pin and connected to the net ce73bcf4cad67fe2a1f73439920a57d0. There's no pull-up or pull-down resistor for the EN pin. According to the datasheet referenced in 9663c5c839f611085dba4863b7c007a750dbdda7a3c811512023825dcbfe72e2, if the enable/shutdown feature is not required, it is okay to connect EN to IN. If you need this feature or if you are uncertain, connecting a pull-up resistor to EN to keep it high or a pull-down resistor to keep it low when not in use should be considered.

Based on these findings, here are the action items I suggest, in an ordered list:

No action is required for the ~RESET~/PC6 pin (U1) because there already is a pull-up resistor R2.
Consider adding a pull-up or pull-down resistor to the EN pin (U2) if the enable/shutdown feature is intended to be used. The specific use-case will determine whether a pull-up or pull-down resistor is appropriate.

Check that none of the unconnected pins require pull-up or pull-down resistors t...

frukolosko

@copilot Check that none of the unconnected pins require pull-up or pull-down resistors to ensure proper function.

copilot

Reviewing the project, I made the following observations:

There are no nets with the "No Connect" (NC) flag which means that all the pins presented in the netlist are connected to something, even if it's just a net with one member.
Pull-up or pull-down resistors are usually required when dealing with IO pins such as GPIOs of a microcontroller, or even communication interfaces like I2C.

The main chips here are:

ATMEGA328-AU which is a microcontroller.
MIC5205YM5-TR which is a voltage regulator.
MCP2515T-I/SO which is a CAN controller.

Looking at the microcontroller (U1: ATMEGA328-AU), all of its IO pins seem to be fully utilized or have a defined role in the circuit, none are floating or left in an undefined state.

For the voltage regulator (U2: MIC5205YM5-TR) and the CAN controller (U3: MCP2515T-I/SO), their respective pins are also well-defined and connected according to their function.

Because of this, it appears that no pull-up or pull-down resistors are required for any of the unconnected pins in the current configuration to ensure proper function.

However, keep in mind that whether or not a pull-up or pull-down resistor is needed also depends on the specific behavior and configuration of the microcontroller's firmware, which isn't provided here. If the firmware leaves any GPIO pins floating or configured as inputs without enabling the internal pull-ups or pull-downs, external pull-up or pull-down resistors might be necessary.

Therefore, despite the hardware looking complete, it's essential to also review the software to ensure the pins are configured correctly.

Capacitance

0.1u F

DTR

MOSI

LED2

SCK

D10

TXO

DTR

Resistance

330 Ω

VCC

LED1

VCC

RXI

RESET

Capacitance

10u F

RAW

VCC

D10

RESET

TXO

Resistance

10K Ω

MISO

RESET

Capacitance

10u F

Not Recommended for New Designs

MOSI

Resistance

10K Ω

RAW

MISO

Resistance

10K Ω

RXI

Capacitance

0.1u F

TXO

RXI

Resistance

10K Ω

VCC

Reviews

Electrical Rule Checks

Missing Footprints

Reports parts that have no footprint.

Design Rule Checks

Overlapping Copper • 5

Des	Net	Des	Net
RESET:1	Net (RESET - P1)	Via	None
Trace 1cff	Net (RESET - P1)	Via	None
Trace 18ee	Net (RESET - P1)	RESET:Pad	None
Trace 36c6	Net (RESET - P1)	Via	None
U1:VCC	None	Trace 936b	Net (JP - P2)

Invalid Layer

Reports nodes that are assigned to a layer that doesn't exist in the layout stackup.

Component Overrides • 28

	Designator	Ruleset
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀REF｀＊	Override rule for ＊｀REF｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	＊｀VALUE｀＊	Override rule for ＊｀VALUE｀＊
	Silk Shapes	Override rule for Silk Shapes

Airwires • 6

	Designators	Net
	J2:Pin_9, U3:VSS	GND
	Trace ef70:Trace ef70, U3:SO	Net (J3 - Pin_10)
	Trace bb8c:Trace bb8c, U3:SI	Net (U1 - PB3)
	U1:PB5, U3:SCK	Net (U1 - PB5)
	Fill:Fill, Fill:Fill	None
	Fill:Fill, U2:GND	None

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 5664
	Trace 7f4f

Protected Intrusions

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

Manufacturing

Manufacturer Part Number • 15

	Designator	MPN
	C1	None
	C2	None
	C3	None
	C4	None
	C5	None
	C6	None
	J4	None
	J5	None
	LED1	None
	LED2	None
	R1	None
	R2	None
	R3	None
	R5	None
	R6	None

Parts Available

Beta

Checks that all parts have a part number and are available from distributors.

System Checks

Auto-Layout

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Reports issues with Auto-Layout if Flux cannot route something or must ignore a configuration.

Passive Components

Resistor Power Rating

Beta

Checks that the power traveling across a given resistor is under its rating with 50% headroom.

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Pull Up/Pull Down Presence

Beta

Checks that IC pins that require pull up or pull down resistors have them.

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Capacitor Voltage Rating

Beta

Checks that capacitors have appropriate voltage ratings to prevent overheating and ensure reliable circuit operation.

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

Arduino Pro Mini 328 - 3.3V/8 MHz 9ezA

Controls

Properties

License

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

Availability & Pricing

Distributor		Qty 1
	Digi-Key	$0.54–$0.81
	LCSC	$0.85
	Mouser	$0.81

Assets

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frukolosko / Arduino Pro Mini 328 - 3.3V/8 MHz 9ezA

Schematic