3.5 inch Arduino LCD Module 320×240 SSD1963

I. Product Overview

The HTM-H035A1-MCU-C13 is a 3.5-inch Arduino LCD Module, a high-performance display device designed for high-reliability industrial and commercial applications. This module features an advanced normally-black LCD panel technology, delivering a crisp resolution of 320(RGB) × 240 pixels with excellent color reproduction and a color gamut reaching NTSC 60%. It is equipped with a powerful onboard SSD1963 driver IC and supports the standard Parallel 8080-series 8-bit MCU interface, greatly simplifying system integration and control for developers. In terms of display performance, it offers a typical brightness of 400 cd/m² and full viewing angles of U80/D80/R80/L80, ensuring outstanding visibility from multiple perspectives.

Additionally, the Arduino LCD Module boasts strong environmental adaptability, with both operating and storage temperature ranges reaching the wide-temperature level of -30°C to +80°C, enabling stable operation in harsh industrial environments. The module operates at a standard VCI voltage of 3.3V±0.3V and features a compact design with a 20-pin dual-contact connection interface, meeting the stringent requirements of modern electronic devices for high integration, low power consumption, and robust durability.

II. Key Features & Highlights

• Built-in SSD1963 Graphics-Grade Controller: The Arduino LCD Module integrates the SSD1963 driver IC, which supports hardware-level screen rotation and mirror flipping at 0°, 90°, 180°, and 270°, along with programmable adjustment of brightness, contrast, and saturation.
• Full Viewing Angles: With a typical brightness of 400 cd/m² and full viewing angles of U80/D80/R80/L80, the Arduino LCD Module delivers clear, color-accurate visuals even in bright outdoor environments or when viewed from multiple angles.
• Wide-Temperature Industrial Reliability: The Arduino LCD Module operates and can be stored within a wide temperature range of -30°C to +80°C. Whether used in freezing outdoor monitoring stations or high-temperature industrial workshops, it runs stably without color distortion.
• High-Performance 8-bit MCU Parallel Interface: Compatible with the standard Parallel 8080-series 8-bit MCU interface, it offers fast data transfer rates. Compared to ordinary SPI serial screens, this interface provides smoother screen refresh performance, eliminating ghosting or lag during large-area updates.

III. Pin Description

The following is the detailed pin definition for the standard 20-Pin interface of this Arduino LCD Module.

IV. Typical Product Applications

Combining the ease of use of the Arduino ecosystem with industrial-grade robustness, the HTM-H035A1-MCU-C13 is widely adopted across multiple industries:

• Industrial Human-Machine Interfaces: Its ultra-wide operating temperature range of -30°C to +80°C makes it an ideal choice for CNC machines, automated production lines, power monitoring instruments, and various interactive terminals in harsh factory environments.
• Medical Electronic Instruments: Benefiting from its 400 cd/m² brightness and IPS panel, it can accurately and clearly display critical medical monitoring parameters and physiological waveforms such as blood oxygen levels, heart rate, and ECG readings.
• Smart Home and IoT Gateways: As a central control panel, it allows for the design of aesthetically pleasing graphical UI menus using open-source libraries, enabling control over lighting, temperature, and security systems within a home.
• Research and Maker Education: As a premium Arduino LCD Module, developers can utilize platforms like the Arduino Mega 2560 or Due, along with readily available libraries such as UTFT or TFT_eSPI, to rapidly prototype advanced instruments, in-vehicle monitoring dashboards, and multimedia terminals.

V. Technical FAQ 

Q1: Can the HTM-H035A1-MCU-C13 module be directly connected to an Arduino Uno?

A1: Direct connection is not recommended. While this module is an excellent Arduino LCD Module solution, its 8-bit parallel MCU interface requires 8 data lines and at least 5 control lines. The Arduino Uno has very limited available pins and insufficient RAM space. We recommend using it with pin-rich boards like the Arduino Mega 2560 or Arduino Due. Furthermore, the module operates at 3.3V. If connecting to a 5V Arduino board, you will need to add a level-shifting circuit (such as a logic level converter or resistor divider network) on the signal lines, or alternatively, use a dedicated SSD1963 Arduino Shield.

Q2: What is the typical operating voltage for this module, and how can the backlight brightness be adjusted?

A2: The module’s typical operating voltage is 3.3V±0.3V. The backlight driving conditions are internally optimized. The module’s LEDON pin can be used to turn the backlight on or off. For brightness adjustment, you can connect an Arduino digital pin with PWM (Pulse Width Modulation) capability to the LEDON pin. By varying the PWM duty cycle, you can easily achieve linear control over the screen’s brightness.

From minor concept tweaks to full custom redesign & development, our engineering team offers end-to-end technical support. Feel free to contact us for custom display demands or technical issues during product selection.