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The M5StampS3A with 1.27mm Header Pins is an ESP32-S3FN8 module with a dual-core 240MHz processor, 8MB Flash, integrated RGB LED, user button, and optimised 3D antenna. It provides 23 GPIOs via a pre-soldered 1.27mm SMT header for compact PCB integration.
M5Stack M5StampS3A with 1.27mm Header Pins is a highly integrated embedded module based on the Espressif ESP32-S3FN8. It features a 240 MHz Xtensa® 32-bit LX7 dual-core processor, integrates 8 MB Flash, a programmable RGB LED, and a user button.
The deeply optimized 3D antenna design delivers stronger wireless performance. Twenty-three GPIOs are broken out and a 1.27 mm-pitch SMT pin header is pre-soldered, providing an even smaller footprint for high-density PCB integration and enabling developers to build compact applications quickly.
| Specification | Parameter |
| SoC | ESP32-S3FN8 |
| DC-DC | MUN3CAD01-SC |
| Flash | 8 MB |
| Input Voltage | DC 5 V |
| HMI | Programmable physical button × 1, programmable RGB LED (WS2812B-2020) × 1 |
| Antenna Type | 2.4 GHz 3D antenna |
| Module Resource I/F | Touch Sensor, SD/SDIO/MMC Host Ctrl, SPI, SDIO/SPI Slave Ctrl, EMAC, Motor PWM, LED PWM, UART, I²C, I²S, GPIO, Pulse Counter |
| IO Interfaces × 23 | G0/G1/G2/G3/G4/G5/G6/G7/G8/G9/G10/G11/G12/G13/ G14/G15/G39/G40/G41/G42/G43/G44/G46 |
| IO Pitch | 1.27 mm |
| LCD FPC Pitch | 0.5 mm @ 12 P or 8 P |
| Operating Temp. | 0 ~ 40 °C |
| Product Size | 26.0 × 18.0 × 4.7 mm |
| Product Weight | 3.1 g |
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