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UM FeatherS3 image

UM FeatherS3

Development Board

Code name: FEATHERS3
ESP32S3

UM FeatherS3 is a development board based on the ESP32S3 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 16MB flash memory.

About UM FeatherS3

A Feather-format ESP32-S3 board with 16MB Flash and 8MB PSRAM, offering USB-C connectivity and support for various peripherals.

📋 Technical Specifications

Complete technical specification details for UM FeatherS3

🛰️ Connectivity

WiFi 802.11 b/g/n (2.4 GHz)
Bluetooth 5.0
BLE 5.0

🧠 Microcontroller

Model esp32s3
Clock Speed 240 MHz
Flash Size 16MB
Architecture xtensa

✨ Features & Pins

Digital IO 21
Analog Input 13
PWM 22
Interrupts 46

Useful Links

Datasheets and resources for UM FeatherS3

ESP32S3 Datasheet

Microcontroller reference

Pin Mappings

Complete pinout and GPIO mapping for UM FeatherS3

21
Digital I/O Pins
46
Interrupt Pins
13
Analog Inputs
22
PWM Pins
PinAnalogTouchPWMOther
1A0T1PWM
2A1PWMVBAT_SENSE
3A2T3PWM
4A3PWM
5A4T5PWMSS
6A5T6PWM
7A6T7PWM
8A7T8PWMSDA
9A8T9PWMSCL
10A9T10PWM
11A10T11PWM
12A11T12PWM
13A12PWMLED_BUILTIN LED
14T14PWM
34PWMVBUS_SENSE
35PWMMOSI SDO
36PWMSCK
37PWMMISO SDI
39PWMRGB_PWR LDO2
40PWMRGB_DATA
43PWMTX
44PWMRX
Legend
A0 Analog input
T0 Touch sensor
PWM PWM capable
RX/TX Serial pins
LED Built-in LED
# Pin number

Default Tools & Configuration

Build and upload settings for UM FeatherS3

SettingValue
Bootloader toolesptool_py
Uploader toolesptool_py
Network uploader toolesp_ota
Bootloader address0x0
Flash modedio
Boot modeqio
PSRAM typeqspi
Maximum upload size
1280 KB (1310720 bytes)
Maximum data size
320 KB (327680 bytes)
Configuration Summary

The UM FeatherS3 uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x0.

Flash mode: dio | Boot mode: qio | PSRAM: qspi

Max sketch size: 1280 KB | Max data size: 320 KB