STMicroelectronics B-LVDS7-WSVGA

Overview

B-LVDS7-WSVGA from STMicroelectronics is a 7.0-inch WSVGA (1024 × 600 RGB) IPS TFT LCD module with integrated five-finger capacitive touch panel, LVDS interface, 16.7M-color display, and 3.3 V logic supply - used as a human-machine interface display on STM32MP257F-EV1 and STM32MP257F-DK evaluation platforms.

For engineers reviewing the B-LVDS7-WSVGA datasheet, B-LVDS7-WSVGA pinout, B-LVDS7-WSVGA application, or B-LVDS7-WSVGA equivalent, key selection considerations include LVDS signal timing compliance, capacitive touch controller compatibility (STMPxx-based), backlight power sequencing (5 V), mechanical integration within 166.2 × 100.3 × 11 mm envelope, and alignment with STM32MP257's 40-pin LVDS connector footprint.

Technical Context

This module serves as a plug-in display accessory for ST's STM32MP257-based evaluation boards, requiring no external display controller - the host MPU drives pixel data directly via 40-pin LVDS interface. It integrates a dedicated capacitive touch controller communicating over I²C to the host.

The IPS panel delivers super-wide viewing angles and consistent color reproduction across ±85° horizontal/vertical; backlight uses edge-lit LED array powered separately at 5 V, while logic and touch circuitry operate at 3.3 V with defined power-up sequencing per DB5283.

Key Specifications

Availability

B-LVDS7-WSVGA is available at Aetrix Electronics and suitable for STM32MP257-based evaluation, industrial HMI prototyping, embedded GUI development, and touch-enabled display validation requiring stable component supply and documented mechanical/electrical integration.

Supply support for B-LVDS7-WSVGA 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 devices, and display interface solutions for industrial, automotive, and consumer applications.

B-LVDS7-WSVGA belongs to ST's STM32 ecosystem accessory board family, engineered specifically to accelerate GUI and touch interface development on STM32MP257 microprocessor platforms.

FAQ

Does B-LVDS7-WSVGA require an external display controller?

No. The module is designed for direct connection to STM32MP257F-EV1 and STM32MP257F-DK boards via their native 40-pin LVDS connector. Pixel data, timing signals, and touch I²C are handled natively by the MP257's DSI/LVDS bridge and GPIO/I²C peripherals - no external TCON or touch controller IC is needed.

What mechanical mounting options are supported?

The module includes pre-drilled mounting holes matching the STM32MP257F-EV1 board layout and ships with a display stand for benchtop evaluation. Its overall dimensions (166.2 × 100.3 × 11 mm) and active area (154.2144 × 85.92 mm) are fixed; custom brackets must accommodate these exact measurements and avoid pressure on the bezel or flex cables.

Is the capacitive touch controller compatible with non-STMP hosts?

Yes - the touch controller communicates via standard I²C (7-bit address 0x5D) and reports absolute X/Y coordinates and finger count. Host firmware must implement I²C read routines and coordinate scaling; ST provides drivers for STM32CubeMPU but no proprietary protocol prevents use with other MCUs supporting I²C and interrupt-driven touch polling.

Can the backlight brightness be adjusted?

Yes - brightness is controlled via PWM applied to the 5 V backlight supply line. The module accepts 0–100% duty-cycle PWM at frequencies between 100 Hz and 20 kHz; ST recommends 1 kHz for minimal audible noise and stable LED current regulation per DB5283 section 4.2.