第8章 Armadillo-440 LCD Expansion Board

The following provides details on the Armadillo-440 LCD Expansion Board hardware.

8.1. Board Overview

The Armadillo-440 LCD Expansion Board connects to the LCD interface on Armadillo-440 and includes a touch-screen LCD module, audio codec and real-time clock. The main specifications of the LCD Expansion Board and the LCD module itself are as follows.

表8.1 Armadillo-400 LCD Expansion Board Specifications

LCD I/F

General purpose LCD I/F connector x1

Data Image, Inc LCD (FG040360DSSWBG03) connector

Back-light LED driver

Audio

Wolfson codec (WM8978GEFL/V)

Stereo headphone output jack x1

Mono mic input jack x1

Calendar ClockSeiko Instruments RTC (S-35390A) with backup functionality
LED / Switch

Tact Switch x 3

Power LED (green) x1

Board Size106.0 × 82.0 mm (not including protrusions)
Power Supply Voltage

Main power: DC3.3V

LCD back-light: DC2.8 - 5.5V

Power ConsumptionApprox. 0.8W (including LCD module)
Operating Temperature-10 - 60℃ (with no condensation)

表8.2 Compatible LCD Module Specifications

TypeFG040360DSSWBG03
MakerData Image, Inc
TypeTFT
Colors24bit
Screen Size4.3 inch
BacklightLED (VL=15 - 18V, IL=40mA)
Touch Panel4-Wire Resistive
Dimensions105.5(W) x 67.2(H) x 4.2(D) mm
Active Area95.04(W) x 53.856(H) mm
Dot Pattern480 x (R, G, B) x 272 dots
Dot Pitch0.066(W) x 0.198(H) mm
Operating Temperature-20 - 70℃

8.2. Interface Layout

LCD Expansion Board Interface Layout

図8.1 LCD Expansion Board Interface Layout


表8.3 LCD Expansion Board Interface Details

Part NumberInterfaceShapeNotes
CON1Armadillo-440 Connection Interface

FFC Connector 50 pin

(0.5mm pitch)

 
CON2Data Image, Inc LCD Interface

FFC Connector 40 pin

(0.5mm pitch)

 
CON3Mono mic input jackφ3.5mm mini jack 
CON4Stereo headphone output jackφ3.5mm mini jack 
CON5Reserve terminal2 pin (2mm pitch)Connector not mounted
CON6General Purpose LCD Interface[a]40 pin (2.54mm pitch) 
CON7Reserve terminal10 pin (2.54mm pitch)Connector not mounted
SW1, SW2, SW3User switchTact switch 
SW4, SW5, SW6Reserve switchTact switchSwitch not mounted
LED1Power LED (green)Surface mounted LCD 
LED2, LED3Reserve LEDφ3mm LEDLED not mounted

[a] For the circuit layout of the General Purpose LCD Interface (CON6), please refer to the "Armadillo-440 LCD Expansion Board Circuit Diagram" stored in the /document/hardware directory on the included DVD.


[警告]

As CON1 and CON6 are connected to the same signal lines they cannot be used at the same time. Please disconnect the Data Image LCD from CON1 when connecting another LCD module to CON6.

8.3. Board Outline Diagrams

LCD Expansion Board Dimensions and Fixing Hole Measurements

図8.2 LCD Expansion Board Dimensions and Fixing Hole Measurements


LCD Expansion Board Connector Locations

図8.3 LCD Expansion Board Connector Locations


8.4. About Defective LCD Pixels

Defective pixels occur at a certain rate due to the fundamental properties of LCD panels. The tolerance range of defective pixels in panels used on the Armadillo-440 LCD Expansion Board follow the standards set out below.

8.4.1. Pixel Defect Definitions

Bright Dots

Pixels which appear brighter than surrounding pixels of the same color on an all-black screen display.

Dark Dots

Pixels which appear darker than surrounding pixels of the same color on an all-white screen display.

Continuous Dot Defects

Where multiple bright or dark dot defects occur continuously in one physical area. This applies to both bright-bright and dark-dark dot defects.

8.4.2. Examination Standard

表8.4 Defect Tolerance Range

DefectTolerance Range
Bright Dot Defects4
Dark Dot Defects5
2 Dot Continuous Defects

2 groups (bright dots)

3 groups (dark dots)

3 Or More Dot Continuous Defects0 (bright or dark dots)
Total Defects5