Pin Function Grouping

0:59

Organizing project tasks.

Analyzing the schematic.

Organizing terminal information.

Drafting a terminal plan.

Yes — for this part, I’d group the pins into functional sections like this. The section names follow the standard IC pin-classification scheme of Power, Ground, GPIO, Communication, Clock, Control, and Debug

Suggested sections for the ESP32-S3FN8

Section	Pins
Power	VDD3P3, VDD3P3, CHIP_PU (often treated separately as Control, see note below), VDD3P3_RTC, VDD_SPI, VDD3P3_CPU, VDDA1, VDDA2
Ground	GND
GPIO	GPIO0, GPIO1, GPIO2, GPIO3, GPIO4, GPIO5, GPIO6, GPIO7, GPIO8, GPIO9, GPIO10, GPIO11, GPIO12, GPIO13, GPIO14, GPIO17, GPIO18, GPIO19, GPIO20, GPIO21, GPIO33, GPIO34, GPIO35, GPIO36, GPIO37, GPIO38, GPIO45, GPIO46
Communication	U0TXD, U0RXD, SPIHD, SPIWP, SPICS0, SPICS1, SPICLK, SPICLK_P, SPICLK_N, SPID, SPIQ
Clock	XTAL_P, XTAL_N, XTAL_32K_P, XTAL_32K_N
Control	CHIP_PU
Debug	MTDI, MTDO, MTCK, MTMS
RF / Analog-special	LNA_IN

Notes

I would put CHIP_PU in Control, not Power, because it’s an enable/reset-style control signal even though it relates to power-up behavior. The classification guidance explicitly reserves Control for reset/enable/boot pins
I’d keep LNA_IN separate as RF or fold it into Analog if you want to stay within the standard section set.
If you want fewer sub-symbols, you can merge Communication + Debug into one block, and RF + Clock into another. For large ICs, dedicated sub-symbols like Power, Communication, Clock, Control, and Debug are recommended for readability

My recommendation for Flux properties

If you want clean symbol organization, I’d use:

Section = Power for all VDD/VDDA/VDD_SPI pins
Section = Ground for GND
Section = GPIO for all GPIOx
Section = Communication for UART/SPI pins
Section = Clock for XTAL pins
Section = Control for CHIP_PU
Section = Debug for MTDI/MTDO/MTCK/MTMS

If you want, I can next turn this into an exact pin-by-pin Section + Pin Group + Sub-symbol mapping.

Group pins by function

Add USB separately

Use datasheet names

16 days

Reviews

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Project Name

ESP32-S3FN8

Description

SMD IC , Dual-Core MCU, Wi-Fi 2.4G & BLE 5.0 combo, 8 MB Octal SPI PSRAM, QFN 56-pin, 7*7 mm The ESP32-S3FN8 is a highly integrated microcontroller from Espressif, designed for WiFi + Bluetooth applications, with strong support for AI, IoT, and embedded systems. It belongs to the ESP32-S3 series and includes embedded flash memory (8 MB) inside the chip package. Dual-core processor Xtensa® 32-bit LX7 CPUs Up to 240 MHz Includes vector instructions for AI / signal processing Integrated Wireless Connectivity 2.4 GHz WiFi (802.11 b/g/n) Bluetooth 5 (LE) support Embedded Flash 8 MB internal flash (FN8 variant) Reduces need for external memory SRAM + ROM for program execution Supports external PSRAM (depending on design) Optimized for: Edge AI (face detection, voice recognition) DSP applications GPIO (multi-function) SPI, I2C, I2S UART PWM ADC / DAC USB OTG (Full Speed) ← key feature Camera interface (DVP) LCD interface #commonpartslibrary #integratedcircuit #mcu #esp32

Properties

Part Type

Integrated Circuit

Manufac…er Name

Espressif Systems

Manufac… Number

ESP32-S3FN8

Datasheet URL

documentation.espressif.com/esp32-s3_datasheet_en.pdf

Designator Prefix

License

creativecommons.org/licenses/by/4.0/

Symbol Style

parametric-v1

Pricing & Availability

Distributor	Qty 1

Controls

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