M5StampS3A Module with 1.27 Header Pin

The M5StampS3A module is a compact ESP32-S3FN8-based development module with 1.27 mm pin headers, specifically designed for highly integrated IoT projects. Its 240 MHz Xtensa LX7 dual-core processor combined with 8 MB flash delivers powerful processing in a tiny package. The module features an optimized 3D antenna that offers better wireless range than the previous model. 23 multifunctional GPIO pins are accessible via the 1.27 mm SMT interface, allowing for versatile applications such as digital input/output, PWM, I²C, SPI, UART, or I²S. For user interface, a programmable RGB LED indicator (WS2812B-2020) and a physical button are integrated. Thanks to the newly designed, tactile boot button and improved power supply, operation is more comfortable and power consumption is lower. The pin header is pre-soldered, allowing the board to be easily integrated into dense circuit board layouts. The outstanding 3D antenna and the lightweight of only about 3.1 g enable reliable wireless communication in portable devices. Developers can program the module with common development environments such as UiFlow2, the Arduino IDE, ESP-IDF, or PlatformIO. This makes the M5StampS3A module ideal for rapid prototyping as well as series products in smart-home and industrial IoT applications.

Recommended Accessories:

• M5StampS3 BreakOut PIN1.27mm
• M5StampS3 GroveBreakOut

Features:

• ESP32-S3FN8 SoC with 240 MHz dual-core Xtensa LX7 processor and 8 MB flash
• 1.27 mm-pitch SMT interface with pre-soldered header for compact integration
• 23 multifunctional GPIO pins for digital I/O, PWM, I²C, SPI, UART, I²S, and other signals
• Optimized 2.4 GHz 3D antenna for strong Wi-Fi performance and improved range
• Integrated programmable RGB LED (WS2812B-2020) and user-friendly button
• Supports development platforms UiFlow2, Arduino IDE, ESP-IDF, and PlatformIO
• Rich I/O breakout supports multiple mounting forms (SMT, DIP, Fly-Wire)
• Optimized power supply with DC-DC regulator MUN3CAD01-SC for low energy consumption
• Compatible connectors for TFT LCD via 0.5 mm FPC (8P/12P), SPI touch sensors, and SD cards

Application Examples:

• Smart home devices and home automation
• Smart IoT devices and sensor networks
• Industrial control terminals or M2M gateways
• Wearable devices and portable sensor technology
• Prototyping platform for learning projects and rapid hardware design

Documentation: 

• Quick Start Guide
• Official M5Stack Forum

Technical Data:

• Manufacturer: M5Stack
• Manufacturer SKU: S007-PIN127-V033
• SoC: ESP32-S3FN8 Wi-Fi MCU
• DC-DC Regulator: MUN3CAD01-SC
• Flash Memory: 8 MB
• Input Voltage: 5 V DC
• User Interface: 1 physical button and programmable RGB LED
• Antenna: 2.4 GHz 3D antenna
• Module resource interfaces: Touch sensor, SD/SDIO/MMC host controller, SPI, SDIO/SPI-slave, EMAC, motor PWM, LED PWM, UART, I²C, I²S, GPIO and pulse counter
• IO Pins: 23 pins – G0 to G46 (according to list)
• Pin header pitch: 1.27 mm
• LCD FPC pitch: 0.5 mm @ 8 P or 12 P
• Operating Temperature: 0 to 40 °C
• Dimensions: 26.0 × 18.0 × 4.7 mm
• Weight: 7g

Package Contents:

• 1× M5StampS3A module with 1.27 header pin
• 1× Pin sticker