PICASO

Overview

The PICASO series by 4D Systems Pty Ltd comprises intelligent display modules featuring an embedded graphics controller. These modules integrate TFT LCD displays with resistive touch panels, offering resolutions such as 240x320 pixels on 2.8-inch and 3.2-inch screens. The architecture supports standalone operation via the 4DGL programming language, eliminating the need for external host processors. Key electrical parameters include a 5V operating voltage, UART interface options (e.g., uLCD-28PTU-AR), and LED backlighting. The series is designed for rapid application development in industrial and consumer electronics.

Feature Summary

• Embedded Picaso-GFX graphics controller enabling standalone functionality
• Support for 4DGL high-level syntax for direct hardware control
• Integrated resistive touch screen interfaces
• UART communication capability in specific variants like uLCD-28PTU-AR

Applications

• Industrial Human-Machine Interfaces (HMI)
• Consumer electronic device displays
• Standalone graphical user interface projects
• Raspberry Pi compatible display solutions

Procurement Notes

Verify specific model suffixes (e.g., -PI, -AR) to confirm interface compatibility and regional certification standards. Check current stock levels as availability varies significantly between distributors; some SKUs may be discontinued or limited supply. Confirm RoHS compliance status directly from the manufacturer's datasheet before procurement.

Selection Notes

Select based on required display size (2.8-inch vs 3.2-inch) and resolution (240x320). Ensure the chosen variant matches the target system's interface requirements, such as UART for uLCD-28PTU-AR or GPIO/I2C/SPI for gen4-uLCD-32PT. Consider thermal operating ranges, which typically span -15°C to +65°C or -20°C to +70°C depending on the specific module revision.

Part Context

PICASO is a product family within 4D Systems' Gen4 Intelligent Display Module lineup. It serves as a core component for developers seeking to reduce system complexity by offloading graphics processing from the main microcontroller. The series includes various form factors and interface options to suit different enclosure and connectivity constraints.

Replacement Considerations

Direct replacements are limited due to the proprietary 4DGL environment. Compatible alternatives must support similar resolution and interface protocols. Verify mechanical dimensions and pinout compatibility if substituting within the same brand's newer Diablo or Pixie families.