STMicroelectronics STM32F4DIS-LCD

Overview

STM32F4DIS-LCD from STMicroelectronics is a 3.5-inch LCD expansion board for the STM32F4 Discovery kit, featuring a SSD2119 display driver IC, 320 × 240 resolution, 262K-color TFT panel, 4-wire resistive touch screen, and PWM-controlled backlight. It connects via 16-bit 8080 parallel interface to the STM32F4DIS-EXT base board for embedded HMI development.

For engineers reviewing the STM32F4DIS-LCD datasheet, STM32F4DIS-LCD pinout, STM32F4DIS-LCD application, or STM32F4DIS-LCD equivalent, key selection factors include parallel 8080 interface timing compatibility with STM32F4 GPIOs, SSD2119 register mapping for touch and display control, backlight dimming resolution via PWM, and mechanical integration with STM32F4DIS-EXT base board headers.

Technical Context

The STM32F4DIS-LCD operates as a peripheral display module requiring host-driven initialization of the SSD2119 controller via 16-bit parallel bus (D0–D15), with dedicated control lines (RS, RD, WR, CS, RST). Touch functionality uses four analog inputs routed to the host MCU's ADC channels.

Backlight intensity is controlled by an external PWM signal applied to the LED_EN pin, supporting adjustable brightness without current-limiting resistor changes. The board lacks onboard memory or frame buffer - all pixel data and touch coordinates are managed by the host STM32F4 microcontroller.

Key Specifications

Availability

STM32F4DIS-LCD is available at Aetrix Electronics and suitable for STM32F4-based HMI prototyping, industrial control panel evaluation, and educational embedded systems labs requiring stable component supply and documented hardware integration paths.

Supply support for STM32F4DIS-LCD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, sensors, power management, and analog products for industrial, automotive, and consumer markets.

The STM32F4DIS-LCD belongs to ST's Discovery ecosystem expansion board family, engineered specifically to accelerate evaluation and proof-of-concept development for STM32F4-series MCUs with peripheral-rich, plug-and-play hardware interfaces.

FAQ

Is STM32F4DIS-LCD compatible with STM32F407VG-based Discovery kits?

Yes - the STM32F4DIS-LCD is designed exclusively for use with the STM32F4 Discovery kit (based on STM32F407VG), connecting through the STM32F4DIS-EXT base board's dedicated LCD header. Pin alignment and voltage levels (3.3 V logic) match the Discovery kit's expansion interface specifications.

Does STM32F4DIS-LCD include onboard flash or RAM for frame buffering?

No - the board contains only the TFT panel, SSD2119 driver IC, touch screen, and passive components. All display memory and graphics processing must be handled by the host STM32F4 MCU; no local framebuffer or storage is present on the LCD board itself.

What software drivers are provided for SSD2119 and touch functionality?

ST provides reference firmware libraries and example projects for the STM32F4DIS-LCD in the STM32F4xx Standard Peripheral Library and STM32CubeF4 package, including SSD2119 initialization sequences, 16-bit parallel write routines, and touch coordinate readout via ADC polling or DMA.

Can the backlight brightness be controlled without modifying hardware?

Yes - brightness is adjusted solely via PWM duty cycle applied to the LED_EN pin. No soldering or component replacement is needed; standard STM32F4 timer outputs (e.g., TIM3_CH2) can generate the required 1–10 kHz PWM signal with variable duty cycle for full-range dimming.