PDQScreen Controller^TM

Bring Speed and Color to Your Instrument

PDQScreen instrument controller with superfast HCS12 processor, HMI

The PDQScreen^TM Controller combines a C-programmable single-board computer with a touch-sensitive graphical user interface. Designed as a fully-functional compact industrial PC powered by a Motorola HCS12 microprocessor, the PDQScreen brings color to your front panel, dramatically increases processing speed, and cuts the cost of data acquisition and instrument control.

It's ideal for OEM applications such as embedded systems, scientific instruments, robotics, and portable data acquisition. The PDQScreen can be commanded remotely from a PC or used stand-alone, providing real-time control of dozens of analog and digital I/O lines.

Configurable Graphical User Interface

The PDQScreen Controller sports a graphical user interface (GUI) on a 5.7" diagonal high-contrast 320x240 pixel display with a touchscreen overlay. It comes complete with object-oriented menuing software that makes it easy to control your application using buttons, menus, graphs, and bitmapped pictures.

Display your own custom graphics on a monochrome LCD or a bright color STN or TFT display. You can create hundreds of sophisticated screens including your company logo, system diagrams, and icon-based control panels using most Windows paint programs, such as PC Paintbrush. Your application program and startup screens execute automatically on power-up.

Put Your Instrument Online

Use Mosaic's EtherSmart Wildcard, a 2x2.5" modular board to web-enable your PDQScreen. The Ethersmart Wildcard enables communications between your instrument and other computers or peripherals via a Local Area Network (LAN) using the standard packet-based Ethernet signaling protocol. Simply plug a standard Ethernet cable into the RJ-45 jack on the Wildcard, and your instrument can communicate with other computers on a Local Area Network (LAN). Your application program can send emails to alert other computers on the network when significant events occur. You can even "browse into" your instrument using a browser running on an online PC to monitor the status of your instrument.

Easily Programmed in C or Forth

The PDQScreen is easily programmed in C, Forth or Assembly using any PC. Built-in programming tools include a multitasking executive and comprehensive device-driver libraries. All functions can be called interactively from the terminal to speed the debugging process. Moreover, the processor implements a Background Debug Mode (BDM) in hardware that facilitates real-time debugging. A low-cost attachment to your desktop PC connects to the BDM header on the board, enabling you to set breakpoints, single step, and trace to diagnose your program at runtime.

A Powerful Controller with Plenty of Memory

The PDQScreen hosts a fast Motorola 68HCS12 microprocessor. This controller has a 16-bit data bus and uses a Phase Locked Loop to synthesize a 40MHz internal clock and 20MHz bus clock, resulting in execution speeds 8 times faster than the 8-bit 68HC11 processor. The processor's 1 MByte address space is populated by 512K internal Flash, 14K internal RAM, and 1K available internal EEPROM, plus 496 Kbytes of fast off-chip RAM. The RAM is "shadowed" by external Flash that acts like an onboard disk drive, restoring your program code to Flash memory each time the board is powered up. This flexible memory architecture allows for both RAM- and Flash-intensive applications. Developing programs is a snap!

Dozens of Analog, Digital and Timer I/O Lines

The PDQScreen packs dozens of analog and digital I/O lines plus versatile serial communications links onto a compact board. It delivers 8 digital I/O lines with counter/timer capabilities, 12 pulse-width modulated (PWM) digital output signals, and 8 general purpose digital I/O lines. Additional I/O includes sixteen analog inputs with 10-bit resolution, dual RS232/485 ports with speeds to 256 KBaud, and synchronous SPI and IIC (I²C) serial interfaces. Any of the digital I/O ports can be configured for general purpose I/O, and the analog input lines can be configured as digital inputs. An optional battery-backed real-time clock reports the time and date.

Need even more I/O?

The PDQScreen Controller hosts Mosaic's Wildcards^TM, small stackable I/O modules for sophisticated and dedicated I/O. Stack up to seven Wildcards for: 16- or 24-bit resolution programmable gain A/D; 12-bit D/A; compact flash mass memory; opto-isolated AC or DC solid state relays; configurable digital I/O; additional RS232, RS422 or RS485; or high-voltage, high-current DC inputs and outputs. To communicate with the PDQScreen via USB, add a USB to RS232 adapter (Part No. ADAP-USBRS).

Need Protection from Aggressive Environment?

Consider our Environmental Gasket to provide a tight, chemically resistant seal between your touchscreen and bezel and to prevent infiltration of dust or liquids.

Block Diagram

Specifications

CPU

16 Bit HCS12, 1 MB address space, 20 MHz bus speed

Onboard Memory

512K on-chip Flash, 14K on-chip RAM
1K on-chip EEPROM
496K RAM, shadowed by flash which acts as a backup disk to load program code at startup

Interrupts

38 interrupts support the HCS12 I/O
Watchdog timer and clock monitor for runtime security

Real-Time Clock

Optional battery-backed real-time clock

Touchscreen/Display User Interface

5.7" diagonal (4.6"x3.5") 320 x 240 pixel display, with three display options to meet your needs:

Cost-effective white-on-blue monochrome display;
Color STN display; or,
High-performance TFT color display

Bright CCFL (Cold Cathode Fluorescent) backlight
High resolution transparent analog touchscreen with software controlled beeper for audible feedback
Custom anti-glare and EMI touchscreens, and optional touchscreen intrinsic safety barrier are also available

Timer-Controlled and Digital I/O

8 bitwise programmable I/O configurable as input captures or output compares, with up to 4 lines useable as pulse accumulators
8 Pulse-Width Modulated (PWM) outputs
4 PWM lines with RC filters to create DAC outputs
8 general purpose I/O (GPIO)
Digital and timer-I/O lines can be configured as general purpose inputs or outputs

10-bit Analog to Digital Conversion

16 input channels, 0 - 5 V, up to 100 kHz sampling
May be used as digital inputs

Communications

Dual RS232 or RS485 hardware UARTs at up to 256 KBaud (default at startup is 115.2 KBaud)
RS485 R, RC, and bias termination
Fast synchronous serial peripheral interface (SPI) at up to 5 MBaud
IIC (I²C) serial link at up to 100 Kbaud

Power

14 to 26 VDC at 15W
5V @ 1A is available for Wildcard I/O modules
Onboard regulation, EMI filter and surge protection

I/O Expansion

Modular Wildcards provide additional I/O for:

Ethernet with dynamic webserver
16- or 24-bit resolution A/D
12-bit D/A
Isolated AC or DC solid state relays
128+ Mbyte Compact Flash
Logic level, high voltage, and high current digital I/O
Dual RS232, RS422 or RS485 up to 56Kbaud

Size & Weight

6.75" x 5"
Depth: 1.26” (Color STN display); 1.42"(Color TFT); 1.45" (Monochrome). Optional plug-on Back Panel PowerDock adds 1.63" to depth
500 gm

Connectors

All connectors have 0.1" spacing, single or dual row:

Two 24 pin Wildcard bus connectors
24-pin digital field bus connector
24-pin analog field bus connector
Two 24-pin field bus mirrors to Docking Panel
10-pin Docking Panel interface header
10-pin dual RS232/485 serial connector
10-pin header for external display contrast, beeper, and power input
10-pin PWM/PWM-controlled D/A converter header
6-pin single row power connector
6-pin BDM (background debug) header
4-pin single row CCFL backlight header
Production/test headers: 6-pin JTAG header for CPLD programming, and 6-pin coprocessor BDM header

Operating Conditions

Temp 0-60?C (-20? to 70?C storage)
Humidity: 0-95% non-condensing

Optional Bezel, Environmental Gasket, and/or EMI-Shield

5" x 7" black anodized aluminum, 270 gm
Watertight, airtight environmental gasket seals the touchscreen to the bezel
Conductive touchscreen overlay/gasket provide the ultimate EMI and ESD protection

Optional Docking Panel

Mounts easily to the PDQScreen using pre-installed stand-offs
Dual DB-9 RS232 serial connectors bring out PDQScreen Serial1 and Serial2 ports
Serial1 DB-9 can be customized to bring out RS485 or hardware handshaking
Dual DB-25 connectors bring ribbon-cabled PDQScreen analog and digital field bus connectors out to back panel
2.1mm female power jack
Panel-mounted rocker style main-power switch
Includes a precision-cut mounting plate for a professional looking back panel

Ordering Information
Part Number	Product
PDQS-MONO	PDQScreen Controller which includes a powerful real time controller, 320 x 240 pixel CCFL-backlit white-on-blue monochrome LCD, analog touchscreen, 512K Flash, 512K RAM backed by nonvolatile flash, dozens of analog and digital I/O lines, dual RS232/RS485 serial ports, SPI, IIC, and Wildcard ports.
PDQS-CSTN	all the features of the PDQScreen , with a color STN display
PDQS-TFT	all the features of the PDQScreen , with a color TFT display that offers the highest contrast and viewing angle
	Options: (add price to the standard product)
-BZ	Mounted on a 5"x7" black anodized aluminum bezel
-EG	Environmental Gasket added to the bezel or touchscreen of your PDQScreen Controller to provide a tight, chemically resistant seal between your touchscreen and bezel
-RB	Real time clock does not battery-back the RAM)
-IS*	An intrinsic safety barrier protects all touchscreen leads (available to quantity orders of 10 or more)
DP-PDQS	Docking Panel which mounts onto the PDQScreen and brings out dual DB-9 serial connectors, dual DB-25 field connectors, power jack and switch for a professional looking back panel.
PDQS-SK-MONO	PDQScreen Starter Kit The PDQScreen Starter Kit includes the PDQScreen Controller with 512K flash and 512K RAM, dozens of analog and digital I/O, a 5.7"diagonal blue-on-white monochrome display and real-time clock (p/n PDQS-MONO-RB), Docking Panel that brings out I/O to convenient connectors (p/n DP-PDQS), comprehensive documentation, power supply and cables. For a full-featured system, you can add the Ethernet Wildcard and the optional black anodized aluminum bezel. You can also order the starter kit with the color STN display, or the high performance color TFT display.

PDQScreen ControllerTM