Pin Function Grouping

flux

0:48

Retrieving pin data.

Analyzing the schematic.

Clarifying component organization.

Yes — grouped so each pin appears only once, with no duplicates across groups. That matches the rule that each pin should belong to exactly one functional group/sub-symbol, and power/ground should be kept in their own dedicated grouping
Proposed pin grouping for this part

Power

GroupPins
Power3V3

Ground

Control

GroupPins
ControlEN

UART / Communication

GroupPins
UARTTXD, RXD

GPIO

GroupPins
GPIOIO0, IO1, IO2, IO3, IO4, IO5, IO6, IO7, IO8, IO9, IO10, IO18, IO19
Recommended Pin Group names
Using the grouping rules for IC-style parts, shared-function pins should share one group name, while singleton control pins can keep their own unique group name

Table

Pin(s)Recommended Pin Group
3V3Power
All GND_1 to GND_10Ground
ENEN or Control
TXD, RXDUART
All IOx pinsGPIO
Best sub-symbol split
For a part with this many pins, a clean split would be:
  • Power → 3V3 + all GND pins
  • Control → EN
  • Communication → TXD, RXD
  • GPIO → all IOx pins
That follows the recommended sub-symbol strategy: dedicate one block to power/ground, and keep communication/control separate from GPIOs
If you want, I can next turn this into a full per-pin property map for Flux, like:
  • Section
  • Pin Group
  • Pin Orientation
  • Sub-symbol Designator Suffix
for every terminal, ready to apply.
Group pins by function
Use datasheet naming
Create grouped pin list
a day
Sign up to send
GND_7
IO19
3V3
IO3
IO6
GND_2
GND_1
EN
GND_8
GND_3
TXD
IO18
IO1
GND_6
IO4
GND_10
GND_4
IO2
IO8
IO9
RXD
GND_9
IO0
IO7
IO10
IO5
GND_5
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    A common return path for electric current. Commonly known as ground.
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    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
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ESP32-C3-WROOM-02-N4

ESP32-C3-WROOM-02-N4 thumbnail
Bluetooth, WiFi 802.11b/g/n, Bluetooth v5.0 Transceiver Module 2.4GHz PCB Trace Surface Mount The ESP32-C3-WROOM-02-N4 is a compact, general-purpose Wi-Fi and Bluetooth Low Energy (BLE) module developed by Espressif Systems. It is built around the ESP32-C3 SoC and integrates RF components, crystal oscillator, flash memory, and PCB antenna in a single module. It is designed for a wide range of applications such as IoT devices, smart home systems, industrial automation, and consumer electronics, offering a balance of performance, low power consumption, and cost efficiency. Key Features MCU & Memory 32-bit RISC-V single-core processor up to 160 MHz 384 KB ROM 400 KB SRAM + 8 KB RTC SRAM Integrated 4 MB SPI flash (N4 variant) Connectivity 2.4 GHz Wi-Fi (802.11 b/g/n) Supports Station, SoftAP, and Station + SoftAP modes Bluetooth 5 (BLE) with mesh support Data rates up to 150 Mbps (Wi-Fi) Peripherals & Interfaces Up to 15 GPIOs Interfaces: SPI, UART, I2C, I2S LED PWM ADC (SAR) Timers & watchdog USB Serial/JTAG support TWAI® (CAN 2.0 compatible) #commonpartslibrary #transceiver #module #wireless #rf

Properties

Module

Espressif Systems

ESP32-C3-WROOM-02-N4

espressif.com/sites/default/files/documentation/esp32-c3-wroom-02_datasheet_en.pdf

U

creativecommons.org/licenses/by/4.0/

parametric-v1

Pricing & Availability

Distributor

Qty 1

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