Connected IoT devices and wireless sensor nodes
On-board radio: Wi-Fi 2.4 GHz; Bluetooth LE (no Classic).
Engineering inference
Adafruit Industries
Adafruit ESP32-S3 Feather (8 MB flash, no PSRAM)
Adafruit Feather-format ESP32-S3 (ESP32-S3-MINI-1, 8 MB flash, no PSRAM): dual-core LX7 240 MHz, Wi-Fi + BLE, native USB-C, LiPoly charger + MAX17048 fuel gauge, STEMMA QT I2C with switchable power, NeoPixel with power control, ~100 µA deep sleep; 21 GPIO with 6 analog inputs.
5323Development boardPrice$17.50Adafruit · in stock
Buy at Adafruit Board essentials
Facts about the complete product. Unknown values remain open design questions.
- Exposed GPIO
- 21
- Board I/O voltage
- 3.3 V
- Board flash capacity
- 8 MiB
- Board SRAM capacity
- 512 KiB
- Board PSRAM capacity
- 0 KiB
- Board operating range
- -40 to 85 °C
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
Battery-powered and portable builds
On-board LiPo charger (Microchip MCP73831) — run from a cell and charge over USB.
Engineering inferenceCustom USB devices (HID, MIDI, serial)
USB is on the main chip (ESP32-S3FN8), so the board can enumerate as a keyboard, MIDI device or CDC serial port.
Engineering inferenceLearning and fast prototyping
Programs from ESP-IDF, Arduino, CircuitPython.
Engineering inferenceInside this board
The board is the parent product. Each chip has its own memory, pins, capabilities and thermal limits.
wireless module
ESP32-S3
Espressif Systems
a873c4e9-4dba-5b7c-883f-4ab6183d00fa--u1- Architecture
- Xtensa 32-bit LX7 dual-core
- Documented clock
- 240 MHz
- On-chip SRAM
- 512 KiB
main processor
ESP32-S3FN8
Espressif Systems
a873c4e9-4dba-5b7c-883f-4ab6183d00fa--mcubattery charger
MCP73831
Microchip
a873c4e9-4dba-5b7c-883f-4ab6183d00fa--u3fuel gauge
MAX17048
Analog Devices
a873c4e9-4dba-5b7c-883f-4ab6183d00fa--ic1ldo regulator
AP2112K-3.3 / RT9080-3.3
Diodes / Richtek
a873c4e9-4dba-5b7c-883f-4ab6183d00fa--u2FAQ
Adafruit ESP32-S3 Feather questions
What microcontroller does the Adafruit ESP32-S3 Feather use?
The Adafruit ESP32-S3 Feather is built around the ESP32-S3FN8, alongside ESP32-S3, MCP73831, MAX17048, AP2112K-3.3 / RT9080-3.3.
How many GPIO pins does the Adafruit ESP32-S3 Feather have?
21 GPIO pins are exposed. Xirkit documents 28 board pins, 22 of them with pin-level electrical limits.
Are the Adafruit ESP32-S3 Feather I/O pins 5 V tolerant?
No. The I/O pins are not 5 V tolerant — they run at 3.3 V logic; use a level shifter for 5 V signals. Input-high threshold: 2.475–3.6 V.
How much current can a Adafruit ESP32-S3 Feather GPIO pin source?
Documented output-high current per pin: 40 mA typ. Values are traced to the chip datasheet; see the pinout table for per-pin limits and conditions.
What voltage powers the Adafruit ESP32-S3 Feather?
Supply range 3.7–5 V. Power inputs: BAT (3.7–4.2 V), USB.
How much does the Adafruit ESP32-S3 Feather cost?
From $17.5 at Adafruit. Prices are observed unit prices before tax and shipping.
What are the Adafruit ESP32-S3 Feather dimensions?
50.8 × 22.86 mm. A STEP model is available for enclosure fit checks.
Which interfaces does the Adafruit ESP32-S3 Feather support?
control, adc, gpio, pwm, uart, clock, gpio_matrix, rtc_gpio, touch, spi, jtag, led, i2c, usb.
How do I program the Adafruit ESP32-S3 Feather?
Supported frameworks: ESP-IDF, Arduino, CircuitPython.
Where does this Adafruit ESP32-S3 Feather data come from?
Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.
Data & sources
Where these values come from
- Adafruit ESP32-S3 Feather (8 MB flash, no PSRAM) datasheet — Adafruit Industries
- Adafruit listing