LilyGo TTGO T-Display 1.14 Inch LCD ESP32

Development Board

Code name: LILYGO_TTGO_T_DISPLAY_1_14

LilyGo TTGO T-Display 1.14 Inch LCD ESP32 is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 4MB flash memory.

About LilyGo TTGO T-Display 1.14 Inch LCD ESP32

🚀 The LilyGo TTGO T-Display 1.14 Inch LCD ESP32 is a compact development board featuring an ESP32 microcontroller with integrated WiFi and Bluetooth capabilities. It includes a 1.14-inch LCD driven by an ST7789 controller, offering a vibrant display for graphical applications. ⚡

📡 With support for WiFi 802.11 b/g/n and Bluetooth 4.2, this board is ideal for IoT and embedded display projects. It also includes 4MB Flash and 520KB SRAM for versatile applications.

Technical Specifications

Complete technical specification details for LilyGo TTGO T-Display 1.14 Inch LCD ESP32

Display

Type LCD

Size 1.14"

Resolution 135x240

Driver ST7789

USB

Type USB-C

Serial Chip CH9102

Connectivity

WiFi 802.11 b/g/n (2.4 GHz)

Bluetooth 4.2

BLE 4.2

Microcontroller

Model esp32

Clock Speed 240 MHz

Flash Size 4MB

PSRAM 4MB

Architecture xtensa

✨ Features & Pins

Digital IO 21

Analog Input 6

PWM 14

Interrupts 22

Download Full Datasheet

Quick Setup

Copy-paste configs for LilyGo TTGO T-Display 1.14 Inch LCD ESP32 - auto‑generated from this board's exact hardware specs.

ESP32 240 MHz 4MB QIO Xtensa

In Arduino IDE 2 select Lilygo Ttgo T Display 1 14 from the esp32 by Espressif package. In PlatformIO use board = esp32dev. ESP32 · 240 MHz · 4MB · QIO.

Tools menu settings

Board (select in Arduino IDE) Lilygo Ttgo T Display 1 14

CPU Frequency 240 MHz

Flash Size 4MB

Flash Mode QIO

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 "Lilygo Ttgo T Display 1 14" for the LilyGo TTGO T-Display 1.14 Inch LCD ESP32.

platformio.ini


[env:lilygo_ttgo_t_display_1_14]
platform  = espressif32
board     = esp32dev
framework = arduino

; Exact hardware config for LilyGo TTGO T-Display 1.14 Inch LCD ESP32
board_build.mcu        = esp32
board_build.f_cpu      = 240000000L
board_build.flash_size = 4MB
board_build.flash_mode = qio
board_upload.flash_size = 4MB

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

esp32: block (YAML)


esp32:
  board: esp32dev
  framework:
    type: arduino   # or "esp-idf"

# LilyGo TTGO T-Display 1.14 Inch LCD ESP32 - 240 MHz ESP32
# Flash: 4MB | USB: USB-C

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

esptool.py - flash command


esptool.py \
  --chip esp32 \
  --baud 921600 \
  write_flash \
    --flash_mode qio \
    --flash_size 4MB \
    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 TTGO T-Display 1.14 Inch LCD ESP32 Pinout Diagram

Complete pin reference for LilyGo TTGO T-Display 1.14 Inch LCD ESP32

Safe Pins to Use

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

IO18

IO19

IO21

IO22

IO23

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
IO1	U0TXD (GPIO1)	Connected to on-board USB-UART for uploading and logs; drives serial output at boot, so using as GPIO can disrupt programming or console.	🔌 USB
IO2	GPIO2	If driven HIGH on reset (while IO0 is LOW), selects an unsupported SDIO boot mode, causing boot failure.	🛠️ Strapping
IO3	U0RXD (GPIO3)	Used for receiving data from USB-UART (programming); also pulled HIGH at boot for console communication, so using as GPIO can disrupt uploads.	🔌 USB
IO16	GPIO16	Connected to internal PSRAM on PSRAM-enabled modules; not usable as GPIO on those modules.	⚡ Flash
IO17	GPIO17	Connected to internal PSRAM on PSRAM-enabled modules; not usable as GPIO on those modules.	⚡ Flash

Useful Links

Datasheets and resources for LilyGo TTGO T-Display 1.14 Inch LCD ESP32

Board Datasheet

Technical specifications

ESP32 Datasheet

Microcontroller reference

LilyGo TTGO T-Display 1.14 Inch LCD ESP32 Custom Pin Mapping

Pin configuration and GPIO mapping for LilyGo TTGO T-Display 1.14 Inch LCD ESP32

Digital I/O Pins

Interrupt Pins

Analog Inputs

PWM Pins

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
4	IO1	GPIO1	BIDIRECTIONAL	GPIO, ADC, I2C
5	IO2	GPIO2	BIDIRECTIONAL	GPIO, ADC
6	IO3	GPIO3	BIDIRECTIONAL	GPIO, ADC
7	IO16	SPI_CS	BIDIRECTIONAL	GPIO, SPI Chip Select
8	IO17	SPI_D	BIDIRECTIONAL	GPIO, SPI Data
9	IO18	SPI_CLK	BIDIRECTIONAL	GPIO, SPI Clock
10	IO19	SPI_Q	BIDIRECTIONAL	GPIO, SPI Q
11	IO21	LCD_DC	OUTPUT	GPIO, LCD Data/Command
12	IO22	LCD_RST	OUTPUT	GPIO, LCD Reset
13	IO23	LCD_BL	OUTPUT	GPIO, LCD Backlight

Legend

Function Pin role

GPIO ESP32 pin

I/O Direction

# Pin number

Default Tools & Configuration

Build and upload settings for LilyGo TTGO T-Display 1.14 Inch LCD ESP32

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x1000`
Flash mode	qio
Boot mode	qio
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	320 KB (327680 bytes)

Configuration Summary

The LilyGo TTGO T-Display 1.14 Inch LCD ESP32 uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x1000.

Flash mode: qio | Boot mode: qio

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