Stamp-S3A PIN1.27

SKU:S007-PIN127-V033

Description

Stamp-S3A PIN1.27 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.

Tutorial

Arduino IDE

This tutorial shows you how to program and control the Stamp-S3A PIN1.27 with the Arduino IDE.

UiFlow2

This tutorial shows you how to control the Stamp-S3A PIN1.27 using the UiFlow2 graphical programming platform.

Features

ESP32-S3FN8 (2.4 GHz Wi-Fi)
1.27 mm-pitch SMT interface
23 multifunctional GPIOs
8 MB Flash
Rich I/O breakout supporting multiple application forms (SMT, DIP, fly-wire)
Integrated programmable RGB LED and button
Development Platform
- UiFlow2
- Arduino IDE
- ESP-IDF
- PlatformIO

Includes

1 x Stamp-S3A PIN1.27
1 x Pin Sticker

Applications

Smart home
Intelligent IoT devices
Industrial control terminals
Wearable devices

Specifications

Specification	Parameter
SoC	ESP32-S3FN8@Xtensa LX7 dual-core, main frequency up to 240MHz
Flash	8MB
DC-DC	MUN3CAD01-SC
Wi-Fi	2.4 GHz Wi-Fi
Input Voltage	DC 5V
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
Package Size	74.0 × 48.0 × 13.0 mm
Gross Weight	7.6 g

Learn

Download Mode

To enter download mode, hold the G0 button on the Stamp-S3A PIN1.27 before powering on, then release it after power is applied.

Additional Notes

ESP32-S3 pins G0 and G46 are strapping pins that determine the boot mode. By default, G0 is pulled-up and G46 is internally pulled-down, enabling the chip to boot from SPI Flash normally. Do not pull G46 high before the chip boots; otherwise, the chip will fail to start. Refer to the Strapping-Pin section of the ESP32-S3 datasheet for details.
An SPI interface for a TFT display is reserved on the back of the module. Compatible FPC connector specifications are 8 PIN and 12 PIN.

Schematics

Stamp-S3A PIN1.27 Schematics PDF

1/1

PinMap

Model Size

Stamp-S3A PIN1.27 Model Size PDF

PCB

KiCad PCB Footprints

Datasheets

Softwares

Arduino

Stamp-S3A PIN1.27 Arduino Quick Start

UiFlow2

Stamp-S3A PIN1.27 UiFlow2 Quick Start

Video

Stamp-S3A PIN1.27 Product Introduction

Product Comparison

Product Comparison Item	Stamp-S3A PIN1.27	Stamp-S3 PIN1.27
RGB LED Control Logic	RGB LED power is multiplexed with the reserved screen FPC bus backlight	Powered as soon as power is applied
Antenna Design	Optimized antenna design with better signal reception	Conventional antenna design
Module Boot Button	Improved tactile feel; 4.0 × 3.0 × 2.0 mm button	2.6 × 1.6 × 0.55 mm button
Power Consumption	Optimized for lower power consumption	Standard design

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