LilyGo T-Display-S3 AMOLED Touch

Development Board

Code name: N/A

LilyGo T-Display-S3 AMOLED Touch is a development board based on the ESP32S3 microcontroller using architecture.

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

About LilyGo T-Display-S3 AMOLED Touch

🚀 The LilyGo T-Display-S3 AMOLED Touch is a cutting-edge development board featuring an ESP32-S3 chip with integrated WiFi and Bluetooth 5 capabilities. It boasts a 1.91-inch AMOLED display with a resolution of 536x240 pixels, driven by an RM67162 controller, offering vibrant visuals for embedded applications. Now featuring capacitive touch support for intuitive user interactions. ⚡

Technical Specifications

Complete technical specification details for LilyGo T-Display-S3 AMOLED Touch

Display

Type AMOLED

Size 1.91"

Resolution 240x536

Driver RM67162

Touch Driver FT3267

Connectivity

WiFi 802.11 b/g/n (2.4 GHz)

Bluetooth 5.0

BLE 5.0

Microcontroller

Model esp32s3

Flash Size 16MB

PSRAM 8MB

Download Full Datasheet

Quick Setup

Copy-paste configs for LilyGo T-Display-S3 AMOLED Touch - auto‑generated from this board's exact hardware specs.

ESP32S3 MHz 16MB DIO Xtensa

In Arduino IDE 2 select from the esp32 by Espressif package. In PlatformIO use board = esp32-s3-devkitm-1. ESP32S3 · MHz · 16MB · DIO.

Tools menu settings

Board (select in Arduino IDE)

CPU Frequency MHz

Flash Size 16MB

Flash Mode DIO

Upload Speed 921600

Architecture Xtensa

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "" for the LilyGo T-Display-S3 AMOLED Touch.

platformio.ini


[env:lilygo_t_display_s3_amoled_touch]
platform  = espressif32
board     = esp32-s3-devkitm-1
framework = arduino

; Exact hardware config for LilyGo T-Display-S3 AMOLED Touch
board_build.mcu        = esp32s3
board_build.f_cpu      = L
board_build.flash_size = 16MB
board_build.flash_mode = dio
board_upload.flash_size = 16MB

The board value is a close generic match - check PlatformIO board registry for an exact fit.

esp32: block (YAML)


esp32:
  board: esp32-s3-devkitc-1
  framework:
    type: arduino   # or "esp-idf"

# LilyGo T-Display-S3 AMOLED Touch -  MHz ESP32S3
# Flash: 16MB | USB: N/A

Paste into your device's .yaml. See ESPHome ESP32 docs for full options.

esptool.py - flash command


esptool.py \
  --chip esp32s3 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 16MB \
    0x1000 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x1000

LilyGo T-Display-S3 AMOLED Touch Pinout Diagram

Complete pin reference for LilyGo T-Display-S3 AMOLED Touch

Safe Pins to Use

These pins are safe for general GPIO usage without boot or system conflicts

IO1

IO2

IO4

IO5

IO6

IO7

IO8

IO15

IO16

IO17

Why Are These Pins Safe?

✓ No boot sequence involvement

✓ No flash/PSRAM connections

✓ No USB or JTAG conflicts

✓ Freely assignable without issues

Pins to Avoid or Use with Caution

Reserved for critical functions. Misuse may cause boot failures, programming issues, or system conflicts.

Strapping Pins

Boot behavior & flash voltage

JTAG Debugging

Low-level debugging interface

USB Pins

USB Serial/JTAG communication

Flash/SPI Pins

Memory & PSRAM connections

UART Serial

Debugging & firmware uploads

PIN	Label	Why Avoid	Type
IO0	GPIO0	Must be pulled high (default) or low (to enter UART download mode) at reset. Using it for other functions can interfere with boot mode configuration.	🛠️ Strapping
IO3	GPIO3	Sampled at reset to select JTAG interface (USB Serial/JTAG controller vs. external pins). Improper use can disable external JTAG or alter debug interface.	🛠️ Strapping
IO9	FSPIHD	Connected to external flash (data/hold signal) on most modules. Not recommended for use as GPIO, since it must remain dedicated to flash communication.	⚡ Flash
IO10	FSPICS0	Used to select the external flash chip. It is required for flash access and cannot be repurposed without losing flash connectivity	⚡ Flash
IO11	FSPID	Used as a data line for flash (and in-package PSRAM). It should not be used as GPIO when the flash/PSRAM is in use.	⚡ Flash
IO12	FSPICLK	Drives the flash (and PSRAM) clock. This critical signal must be reserved for memory and not used as general GPIO.	⚡ Flash
IO13	FSPIQ	Used as a data line for flash/PSRAM transfers. Not available for other uses when flash/PSRAM is connected.	⚡ Flash
IO14	FSPIWP	Connected to external flash (data/write-protect signal). Not recommended as GPIO because it’s reserved for flash operations.	⚡ Flash
IO38	FSPIWP	On flash-equipped chips, this pin is tied to the flash’s WP# (or D3) line. It should be avoided for other use, as it’s needed for flash operations.	⚡ Flash

Useful Links

Datasheets and resources for LilyGo T-Display-S3 AMOLED Touch

Board Datasheet

Technical specifications

ESP32S3 Datasheet

Microcontroller reference

LilyGo T-Display-S3 AMOLED Touch Custom Pin Mapping

Pin configuration and GPIO mapping for LilyGo T-Display-S3 AMOLED Touch

Digital I/O Pins

Interrupt Pins

Analog Inputs

Pin	Function	ESP Pin	I/O Type	Description
1	3V3	3.3V	POWER OUTPUT	3.3V power output
2	GND	GND	POWER GROUND	Ground connection
3	5V	5V	POWER INPUT	5V power input for the board
4	IO0	A0	BIDIRECTIONAL	GPIO, ADC pin, Touch, PWM
5	IO1	A1	BIDIRECTIONAL	GPIO, ADC pin, Touch, PWM
6	IO2	A2	BIDIRECTIONAL	GPIO, ADC pin, Touch, PWM
7	IO3	A3	BIDIRECTIONAL	GPIO, ADC pin, Touch, PWM
8	IO4	BAT_VOLT	INPUT	GPIO, Battery Voltage Sense, PWM
9	IO5	LCD_RES	OUTPUT	GPIO, LCD Reset, PWM
10	IO6	LCD_CS	OUTPUT	GPIO, LCD Chip Select, PWM
11	IO7	LCD_DC	OUTPUT	GPIO, LCD Data/Command, PWM
12	IO8	LCD_WR	OUTPUT	GPIO, LCD Write, PWM
13	IO9	LCD_RD	OUTPUT	GPIO, LCD Read, PWM
14	IO10	SS	BIDIRECTIONAL	GPIO, SPI Slave Select, PWM
15	IO11	MOSI	BIDIRECTIONAL	GPIO, SPI Master Out Slave In, PWM
16	IO12	SCK	BIDIRECTIONAL	GPIO, SPI Clock, PWM
17	IO13	MISO	BIDIRECTIONAL	GPIO, SPI Master In Slave Out, PWM
18	IO14	TOUCH_INT	INPUT	GPIO, Touch Interrupt
19	IO15	LCD_POWER_ON	OUTPUT	GPIO, LCD Power Enable, PWM
20	IO16	TOUCH_SCL	BIDIRECTIONAL	GPIO, I2C Clock for Touch
21	IO17	TOUCH_SDA	BIDIRECTIONAL	GPIO, I2C Data for Touch
22	IO38	LCD_BL	OUTPUT	GPIO, LCD Backlight, PWM