Datasheet

4D SYSTEMS µLCD-28PTU
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microLCD PICASO
DISPLAY
5. PmmC/Firmware Programming
The PICASO processor used in the μLCD-28PTU
module is a custom graphics processor. All
functionality including the high level commands
are built into the chip. This chip level configuration
is available as a Firmware/PmmC (Personality-
module-micro-Code) file.
A PmmC file contains all of the low level micro-
code information (analogy of that of a soft silicon)
which define the characteristics and functionality
of the device. The ability of programming the
device with a PmmC file provides an extremely
flexible method of customising as well as
upgrading it with future enhancements.
A PmmC file can only be programmed into the
device via its COM0 serial port. Figure below
provides a typical implementation for the PmmC
programming interface.
The PmmC file is programmed into the device with
the aid of Workshop 4, the 4D Systems IDE
software (See Section 11). To provide a link
between the PC and the ICSP interface, a specific
4D Programming Cable is required and is available
from 4D Systems.
Using a non-4D programming interface could
damage your display, and void your Warranty.
Please refer to section 8.1 for more information on
4D programming interfaces.
6. Module Features
The μLCD-28PTU module is designed to
accommodate most applications. Some of the
main features of the module are listed below.
Display – 2.8” TFT Touch Screen
The μLCD-28PTU module is equipped with a 2.8”
TFT display. Details of the display are listed below:
• Screen Size: 2.8” diagonal
• Resolution: 240 x 320
• Integrated 4-Wire Resistive Touch Screen
• Screen Dimensions: 50.00 x 69.20 x 3.60mm
• Viewing Area: 43.20 x 57.60mm
• Pixel Pitch: 0.180 x 0.180mm
• Brightness: 150cd/m2
• Contrast Ratio: 250:1
• Viewing Angle Above Centre: 20 degrees
• Viewing Angle Below Centre: 30 degrees
• Viewing Angle Left of Centre: 40 degrees
• Viewing Angle Right of Centre: 40 degrees
• Viewing Direction: 6 O'clock
• 4 Parallel LEDs for Backlighting
Note: The Displays used are the highest rated
‘Grade A’ Displays, which allow for 0-4 defective
pixels. A defective pixel could be solid Black
(Dead), White, Red, Green or Blue.
PICASO Processor
The module is designed around the PICASO
Graphics Controller from 4D-Labs.
The PICASO is a smart Controller and the interface
to the TFT- LCD displays is almost plug-n-play.
All of the data and control signals are provided by
the chip to interface directly to the display.
Powerful graphics, text, image, animation and
countless more features are built right inside the
chip.
4D Programming
Cable