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A quick reference handbook for pinouts across MCUs, connectors, and interface standards.

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Explore all pin definitions by device type.

Microcontrollers1Pin definitions for common microcontrollers and modules like ESP32, STM32, and Arduino.Connectors1Pin definitions for connectors such as USB, HDMI, and audio interfaces.Boards2Pin definitions for common microcontroller development boards.IC Packages1Top, bottom, and mechanical references for QFN, BGA, LGA, and other packages.

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Newly added or refreshed pin definitions.

ESP32-C3 SuperMini16 pins

Ultra-compact development board based on ESP32-C3, supporting Wi-Fi and Bluetooth 5 (LE).

ESP32-S3 SuperMini40 pins

An ultra-compact ESP32-S3 development board with Wi-Fi and Bluetooth

ESP32-WROOM-3238 pins

Dual-core Wi-Fi and Bluetooth MCU module widely used in IoT applications.

USB Type-A Female4 pins

Four-contact USB Type-A receptacle pinout used by USB 1.x and USB 2.0.