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Appendix D: QVGA Schematics

QED Board Schematic

QED Board (PN: QED-4-QVGA) Processor

embedded microprocessor Schematics

Figure D-1 QED Board (PN: QED-4-QVGA) Processor.

 

QED Board Memory

microprocessor memory schematics

Figure D-2 QED Board Memory.

 

QED Board PIA and High Current Drivers

microcontroller interface schematic

Figure D-3 QED Board PIA and High Current Drivers.

 

QED Board PAL Glue Logic

pal plc control

Figure D-4 QED Board PAL Glue Logic.

 

QED Board Serial Communications Drivers

microprocessor serial interface

Figure D-5 QED Board Serial Communications Drivers.

 

QED Board Reset Circuitry

processor reset circuit

Figure D-6 QED Board Reset Circuitry.

 

QED Board Power Conditioning

power board schematic

Figure D-7 QED Board Power Conditioning. (The regulator and input filter are not installed; the QED-4-QVGA Board receives filtered and regulated power from the QVGA Board).

 

QED Board 12-bit A/D and 8-bit DAC

analog and digital schematic

Figure D-8 QED Board 12-bit A/D and 8-bit DAC.

 

QED Board Connector Pin-Outs

pin out connector

Figure D-9 QED Board Connector Pin-Outs.

 

QVGA Board Schematic

QVGA Board Schematic Signal Directory

embedded signals

Figure D-10 QVGA Board Schematic Signal Directory.

 

QVGA Board CPLD and Bus Multiplexers

cpld bus

Figure D-11 QVGA Board CPLD and Bus Multiplexers.

 

QVGA Board Display Controller

touch screen controller

Figure D-12 QVGA Board Display Controller.

 

QVGA Board Memory

embedded touch screen memory

Figure D-13 QVGA Board Memory.

 

QVGA Board Touchscreen Controller and Backlight Supply

touch screen circuit cfl backlight

Figure D-14 QVGA Board Touchscreen Controller and Backlight Supply.

 

QVGA Board LCD Bias/Contrast

lcd screen bias voltage

Figure D-15 QVGA Board LCD Bias/Contrast.

 

QVGA Board Power

embedded power circuit

Figure D-16 QVGA Board Power.

 

QVGA Board Display/Touchscreen Headers and Touchscreen Intrinsic Safety Barrier

protect sensative circuits

Figure D-17 QVGA Board Display/Touchscreen Headers and Touchscreen Intrinsic Safety Barrier (ISB).

 

QVGA Board Wildcard Module Bus Ports and Serial Connectors

embedded logic bus

Figure D-18 QVGA Board Wildcard Module Bus Ports and Serial Connectors.

 
This page is about: Appendix D: QVGA Schematics – The QVGA Controller comprises two PC boards, designated QED Board and QVGA Board.The QED Board contains processor, RAM and Flash memory, digital I/O, A/D and D/A.The QVGA Board contains power conditioning, display and touchscreen interface circuits, …
 
 
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