1.54‑inch IPS TFT LCD Display Module – 240×240, IPS Full View, 1:1 Square, SPI Interface

Product Overview

This 1.54‑inch TFT LCD module delivers crisp, high‑definition visuals at a resolution of 240 × RGB × 240 pixels with a unique 1:1 square aspect ratio. Powered by the ST7789V driver IC (or equivalent), it features a 4‑wire SPI interface, enabling simple, low‑pin‑count connection to most microcontrollers – ideal for compact and cost‑sensitive embedded designs.

The panel utilizes a Normally Black, Transmissive LCD with IPS wide‑viewing technology (80°/80°/80°/80°), delivering consistent colour and contrast from any angle. With an ultra‑compact module size of 31.52 × 33.72 × 1.94 mm, a perfectly square active area of 27.72 × 27.72 mm, and anti‑glare surface treatment, this module is the ideal choice for portable, battery‑powered, and space‑constrained products requiring a square display format.

Key Features

Square 1:1 aspect ratio – 240×240 format, perfect for circular and square UI designs
IPS full viewing angle – 80° in all directions for consistent colour from any perspective
SPI interface – 4‑wire serial interface, compatible with virtually all MCUs
Normally Black technology – Deep blacks and excellent contrast ratio
Anti‑glare surface – Reduces reflections for improved outdoor readability
Ultra‑low power consumption – Sleep mode current down to 15 µA, perfect for battery‑powered applications
Ultra‑compact design – 31.52 × 33.72 × 1.94 mm for space‑constrained devices
Long‑life LED backlight – 30,000 hours typical, normally white
Wide temperature range – Operating: ‑10℃ to +60℃; Storage: ‑20℃ to +70℃
No touch panel – Focused on pure display performance

Technical Specifications

General Specifications

Display Size	1.54 inch (diagonal)
Resolution	240 × RGB × 240 dots
LCD Type	TFT, Normally Black, Transmissive
Viewing Angle	80°/80°/80°/80° (IPS)
Aspect Ratio	1:1 (Square)
Driver IC	ST7789V or equivalent
Interface	4‑wire SPI
Backlight	LED, Normally White
Touch Panel	Without Touch Panel
Surface Treatment	Anti‑Glare

Mechanical Dimensions

Module Dimension	31.52 (W) × 33.72 (H) × 1.94 (D) mm
Active Area	27.72 × 27.72 mm
Pixel Pitch	0.1155 × 0.1155 mm

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Operating Temperature	TOP	-10	+60	℃
Storage Temperature	TST	-20	+70	℃

Electrical Characteristics (Operating Conditions)

Parameter	Symbol	Min	Typ	Max	Unit
Analog Supply Voltage	VDD	2.4	2.8	3.3	V
I/O Supply Voltage	IOVCC	1.65	1.8	3.3	V
Input High Voltage	VIH	0.7×IOVCC	–	IOVCC	V
Input Low Voltage	VIL	0	–	0.3×IOVCC	V
Output High Voltage	VoH	0.8×IOVCC	–	IOVCC	V
Output Low Voltage	VoL	0	–	0.2×IOVCC	V
Power Consumption (Black Mode)	–	–	6.0	–	mA
Power Consumption (Sleep Mode)	–	–	0.015	–	mA

LED Backlight Characteristics

Parameter	Symbol	Condition	Min	Typ	Max	Unit
Forward Voltage	Vf	If = 60mA	2.8	3.0	3.2	V
Backlight Power Consumption	WBL	If = 60mA	–	192	–	mW
LED Lifetime	–	–	–	30,000	–	Hr

Interface Pin Definition

The module uses a 4‑wire SPI interface with the following pinout:

Pin No.	Symbol	Function
1	GND	Ground
2	IOVCC	I/O system power supply
3	CS	Chip selection pin
4	RESET	Reset signal (active low)
5	RS	Data/command selection (4‑wire SPI)
6	GND	Ground
7	SCL	Serial interface clock
8	SDA	Serial interface data input/output
9	GND	Ground
10	VDD	Analog power supply
11	FMARK	Tearing effect signal (sync MCU to frame memory)
12	VLED-	LED backlight cathode
13	VLED-	LED backlight cathode
14	VLED+	LED backlight anode
15	VLED+	LED backlight anode

Typical Applications

This versatile square‑format display module is ideal for:

Wearable devices – Smartwatches, fitness trackers, and health monitors
Smart home & IoT – Smart thermostats, lighting controls, doorbells, and home hubs
Portable consumer devices – Handheld gaming, remote controls, and audio players
Industrial HMIs – Compact control panels and equipment status displays
Medical devices – Miniature diagnostic tools and portable monitors
Automotive – Dashboard indicators and climate control panels

Note: The 1:1 square aspect ratio is fixed. For other aspect ratios, please consult our technical support team for alternative options.

Why Choose This Module?

Unique square format – 240×240 1:1 aspect ratio enables creative UI designs for circular and square enclosures.
IPS full‑view technology – Wide viewing angles ensure excellent readability from any direction.
Ultra‑low power consumption – 15 µA sleep mode makes it ideal for battery‑operated wearables.
Simple SPI interface – 4‑wire SPI connects to virtually all MCUs with minimal pin usage.
Anti‑glare surface – Reduces reflections for better visibility in bright environments.
Proven ST7789V controller – Reliable, well‑documented solution with extensive community support.
Quality assured – Manufactured in ISO9001/ISO14001 certified facilities.