HTM-H035A33-MCU-A14 | 3.5" 320x240 TFT LCD Display Module With SSD1963 Controller Embedded HMI Screen
The 320x240 TFT LCD Display Module represents a benchmark in embedded display technology, offering a compelling balance of visual clarity, compact form factor, and versatile integration. This QVGA-resolution panel delivers 320x240 pixels, providing crisp, vibrant color reproduction for a wide array of human-machine interface (HMI) applications.
At the heart of this 320x240 TFT LCD Display Module lies a high-performance driver IC, typically the SSD1963 or equivalent, which streamlines the display driving process and ensures reliable operation. The module’s active area maintains a superior 4:3 aspect ratio familiar to users, while offering excellent visibility in various indoor lighting conditions with robust brightness levels. Its wide operating temperature range guarantees stability in demanding industrial and commercial environments.
This particular 320x240 TFT LCD Display Module is distinguished by its integrated LCD controller board. This built-in board handles all critical display signal conversion and timing control, effectively transforming the complex raw LCD panel into a user-friendly, drop-in component. This integration significantly reduces the design burden on the engineer, making the 320x240 TFT LCD Display Module an optimal solution for accelerating product development cycles in industrial control, medical devices, and portable instrumentation.
3.5" 320x240 TFT LCD Display Module Specification

Advantages of the 8080 MCU Interface with Driver Board for the 3.5" 320x240 TFT LCD Display Module
The combination of a built-in driver board and an 8080 MCU parallel interface transforms the 320x240 TFT LCD Display Module into an exceptionally developer-friendly component, offering distinct advantages in terms of design simplification, ease of use, and system efficiency.
Simplified Hardware Design
The most significant advantage is the near-complete elimination of complex, time-consuming display driver circuitry. By integrating the LCD controller board directly into the module, the 8080 interface provides a straightforward, parallel connection bus. Engineers can bypass the intricacies of generating precise RGB timing signals and managing panel power sequencing. This consolidated design simplifies the PCB layout, reduces overall component count, and minimizes the risk of signal integrity issues, allowing the team to focus on core application logic rather than display driving intricacies.
Seamless Microcontroller Integration
The 8080 interface is an industry-standard parallel communication protocol, ensuring broad compatibility with the majority of microcontrollers (MCUs) on the market. This is a direct benefit of the driver board's architecture, which abstracts the display's native interface into a widely recognized standard. It typically uses an 8-bit or 16-bit data bus, along with simple control lines like Chip Select (CS), Write (WR), and Read (RD), for fast and reliable data transfer. Most MCUs have dedicated parallel I/O ports that can be easily configured to match the 8080 interface's timing requirements, leading to a seamless and straightforward hardware integration process.
Efficient and Intuitive Software Control
The 8080 interface, backed by the controller board, operates on a clear command-and-data protocol. Software control becomes highly intuitive: the developer simply writes commands to configure the display (e.g., setting the pixel window) and then writes pixel data to the display's built-in frame buffer via the parallel bus. This is a stark contrast to other interfaces like SPI, which, while requiring fewer pins, are often significantly slower when updating a full 320x240 resolution screen. The parallel 8080 interface ensures a high data throughput, enabling smooth screen updates and responsive graphical user interfaces. Because all the complex display management is handled by the onboard controller, the main MCU is freed from this overhead, allowing it to process other tasks more efficiently. This synergistic combination of a driver board and 8080 MCU interface makes this 320x240 TFT LCD Display Module an exceptionally accessible and powerful solution for any embedded project.
Display Pin Definitions of the 3.5" 320x240 TFT LCD Display Module
Pin NO. | Symbol | Description |
1 | GND | Power supply ground |
2 | VCI | Power input |
3 | BLEN | Enable and LED Brightness Control Input. Pull high to turn on IC. Drive EN with a 20kHz to 1MHz unfiltered PWM dimming signal for DC LED current that is proportional to the signal’s duty cycle |
4 | RS | Display data (or parameter)/command (or register index) selection pins |
5 | WR | Write enable in MCU parallel interface |
6 | RD | Read enable in 8080 MCU parallel interface, Low-active |
7~22 | DB[0~15] | Data bus. When using an 8-bit bus, DB[0~7] are used, and unused pins should be kept in a floating state |
23 | TE/WAIT | -Tearing effect signal is used to synchronize MCU to frame memory writing. |
24 | CTP-INT | Interrupt signals for capacitive touch |
25 | CS | Chip selection pin. Low enable |
26 | RESX | Reset signal. Signal is active low. Built-in RC circuit (10K + 0.1uF) |
27~28 | NC | Not connected |
29 | CTP-SCL / RTP-XL | IIC clock signal for capacitive touch; resistive touch "XL" Position Input |
30 | CTP-SDA / RTP-YU | IIC data signal for capacitive touch; resistive touch "YU" Position Input |
31 | CTP-RTN / RTP-XR | Reset signal for capacitive touch; resistive touch "XR" Position Input |
32 | RTP-YD | Resistive touch "YD" Position Input |
33~34 | GND | Power supply ground |
35~36 | VLED | Backlight drive power input |
TFT LCD backlight module driving conditions of the 3.5" 320x240 TFT LCD Display Module
Item | Symbol | Condition | Min | Type | Max | Unit |
Forward voltage | VF | built-in circuit | 3.0 | - | 5.0 | V |
Forward current | IF | built-in circuit | 160 | - | 100 | mA |
Luminance (With LCD) | Lv | No TP | - | 800 | - | cd/m² |
Have CTP | Type - 100 | 700 | Type + 100 | cd/m² | ||
Have RTP | - | 650 | - | cd/m² | ||
LED life time | Hr | Ta=25±3 ℃ | 20,000 | 30,000 | - | Hour |
3.5" 320x240 TFT LCD Display Module With SSD1963 Controller Embedded HMI Screen Now Available!
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