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The PSM is a Propeller based TFT LCD display module.
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Features:
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QVGA 2.4" TFT LCD with 320x240xRGB resolution
and backlight |
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Propeller Microcontroller running at 80 MHz
with 8 independent cores (cogs) |
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USB and logic level serial interfaces
for control and/or programming |
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3-axis accelerometer to detect device
orientation |
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Stereo headphone output |
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Full size SD card memory expansion
slot |
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One uncommitted pushbutton |
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Eight uncommitted I/O pins |
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I2C expansion port |
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One uncommitted 8-bit ADC input
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One uncommitted 8-bit DAC output
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Electrical:
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Powered by USB, 3-pin header, or
standard 5.1 mm barrel connector |
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Header ports provided for ADC, DAC, I/O pins, power, and RS232
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Physical:
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Circuit board is 3.8"x2.5" |
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The 4 mounting holes provided are spaced 3"x2" apart.
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Modes of Operation:
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The PSM is preprogrammed as a simple RS232 controlled display module
with advanced options such as file access to FAT16 formatted SD cards.
But, it can be custom programmed using Parallax's free development
tools. The display will offer several modes of operation:
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Serial command mode accepts commands and data to show text
or graphics in any color at any location on the screen. This
is the normal mode of operation when being controlled via the RS232
interface. Two sizes of fonts are be available.
High-color photos can be displayed in this mode either over the
serial interface or from the SD card. |
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In Propeller TV/VGA compatibility mode the screen is represented
by a 20x15 array of tiles in the same way the Parallax's standard
TV/VGA drivers operate. This allows the developer to use
the existing code base with only minor changes. This also
allows double-buffering for fast, full-screen updates. Also,
the standard "Graphics" driver can be utilized in this mode. Concurrent LCD and TV/VGA display
are possible in this mode. |
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These two modes can be combined in many ways depending on the
particular usage required. The programming tools are provided
by Parallax (only a USB cable is required). Source code for
the modes of operation listed above is provided at no extra cost.
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Expansion:
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The PSM can be expanded using the 8 uncommitted I/O pins, the
RS232 interface, and the I2C bus. |
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The PSM BCKVM Accessory board (sold separately) attaches to the
PSM to form a complete, stand-alone, system. |
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Custom accessory boards for the PSM are easily created using the
ExpressPCB.com header layout provided. This allows fast
prototyping at low cost. |
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Questions?
>>>>
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