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EVE1 3.5″

This datasheet gives detailed information about the Riverdi 3.5″ EVE1 displays. The displays come in different versions: with capacitive, resistive, or no touchscreen, and with our without a metal mounting frame.

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Rev.1.0
2019-06-07

ITEM CONTENTS UNIT
LCD Type TFT/Transmissive/Normally white /
Size 3.5 Inch
Viewing Direction 12:00 (without image inversion) O’ Clock
Gray Scale Inversion Direction 6:00 O’ Clock
Number of Dots 320 x (RGB) × 240 /
Driver IC FT80x /
Interface Type SPI/I2C /
Brightness no touch module 540 cd/m2
CTP module 480
RTP module 450
Color Depth 262k /
Pixel Arrangement RGB Vertical Stripe /
Surface Treatment Anti-glare / Clear (for CTP) /
Input Voltage 3.3 V

Note 1: RoHS, REACH SVHC compliant

Note 2: LCM weight tolerance: ± 5%.

1. Module classification information

RV T 35 A 320 240 C X W x 0x
1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
1. BRAND RV – Riverdi
2. PRODUCT TYPE T – TFT Standard
3. DISPLAY SIZE 35 – 3.5”
4. MODEL SERIAL NO. A (A-Z)
5. RESOLUTION 320240– 320×240 px
6. INTERFACE C– TFT+controller FT8xx
7. FRAME N – No Frame

F – Mounting Frame

8. BACKLIGHT TYPE W – LED White
9. TOUCH PANEL N – No Touch Panel

R – Resistive Touch Panel

C – Capacitive Touch Panel

10. VERSION 0x (00-99)

2. Assembly guide – integration

2.1. Mounting frame

For dimensions 3.5”, 4.3”, 5.0” and 7.0” the product with mounting frame version is available. Thanks to the four catches attached to the side, frame provides strong assembly to the surface by mounting element (like the screw, see Figure 3). The frames are specially designed to fit Riverdi products perfectly. The diameter of the mounting hole is 3.5mm.

Figure 1. Mounting frame

3. Drawings

4. Absolute maximum ratings

PARAMETER SYMBOL MIN MAX UNIT
Supply Voltage for Logic (VDD pin) VDD 0 4.0 V
Supply Voltage for Logic (BLVDD pins) BLVDD 0 7.0 V
Input Voltage For Logic VIN GND VDD V
Operating Temperature TOP -20 70 °C
Storage Temperature TST -30 80 °C
Humidity RH 90% (Max 60°C) RH

5. Electrical characteristics

PARAMETER SYMBOL MIN TYP MAX UNIT NOTES
Supply Voltage For Module VDD 3.0 3.3 3.6 V
Input Voltage For LED inverter BLVDD 2.8 3.3 5.5 V
Input Current (Exclude LED Backlight) IDD 55 69 mA VDD=3.3V
LED Backlight Current IDDbacklight 150 187 mA BLVDD=3.3V
LED Backlight Current IDDbacklight 93 117 mA BLVDD=5V
Total Input current (Include LED Backlight 100%) IDDtotal 205 257 mA BLVDD=3.3V
Input Voltage ‘H’ level Vih 0.7VDD VDD V
Input Voltage ‘L’ level Vil GND 0.2VDD V
LED Life Time 40000 50000 Hrs Note1

Note: The LED life time is defined as the module brightness decrease to 50% original brightness at Ta=25°C.

6. Electro-optical characteristics

ITEM SYMBOL CONDITION MIN TYP MAX UNIT REMARK NOTE
Response Time Tr+Tf
θ=0°
∅=0°
Ta=25°C
25 30 ms Figure 1 4
Contrast Ratio Cr 350 Figure 2 1
Luminance Uniformity δ WHITE 75 80 % Figure 2 3
Surface Luminance
TFT
Lv
540
cd/m2
Figure 2
2
TFT+CTP 480
TFT+RTP 450
Viewing Angle Range
θ
∅ = 90° 30 40 deg Figure 3
6
∅ = 270° 50 60 deg Figure 3
∅ = 0° 50 60 deg Figure 3
∅ = 180° 50 60 deg Figure 3
CIE (x, y)
Chromaticity
Red
x
θ=0°
∅=0°
Ta=25°C
0.574 0.624 0.674
Figure 2
5
y 0.318 0.368 0.418
Green
x 0.3 0.35 0.4
y 0.5 0.55 0.6
Blue
x 0.093 0.143 0.193
y 0.069 0.119 0.169
White
x 0.26 0.31 0.36
y 0.283 0.333 0.383
NTSC 50 %

Note 1. Contrast Ratio(CR) is defined mathematically as below, for more information see  Figure 3 .

Note 2. Surface luminance is the LCD surface from the surface with all pixels displaying white. For more information, see Figure 3 .

Note 3. The uniformity in surface luminance δ WHITE is determined by measuring luminance at each test position 1 through 5, and then dividing the maximum luminance of 5 points luminance by minimum luminance of 5 points luminance. For more information, see Figure 3 .

Note 4. Response time is the time required for the display to transition from white to black (Rise Time, Tr) and from black to white (Decay Time, Tf). For additional information see FIG 1. The test equipment is Autronic-Melchers’s ConoScope series.

Note 5. CIE (x, y) chromaticity, the x, y value is determined by measuring luminance at each test position 1 through 5, and then make average value.

Note 6. Viewing angle is the angle at which the contrast ratio is greater than 2. For TFT module the contrast ratio is greater than 10. The angles are determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which is normal to the LCD surface. For more information see Figure 4.

Note 7. For viewing angle and response time testing, the testing data is based on Autronic-Melchers’s ConoScope series. Instruments for Contrast Ratio, Surface Luminance, Luminance Uniformity, CIE the test data is based on TOPCON’s BM-5 photo detector.

Note 8. For TFT module, Gray scale reverse occurs in the direction of panel viewing angle.

Figure 2. The definition of response time

Figure 3. Measuring method for Contrast ratio, surface luminance, Luminance uniformity, CIE (x, y) chromaticity

Figure 4.The definition of viewing angle

7. Interface description

PIN NO. SYMBOL DESCRIPTION
1 VDD Power Supply
2 GND Ground
3 SPI_SCLK/ I2C_SCL SPI SCK Signal / I2C SCL Signal, Pulled Up Inside Display by 47k Resistor
4 MISO/ I2C_SDA SPI MISO Signal / I2C SDA Signal, Pulled Up Inside Display by 47k Resistor
5 MOSI/ I2C_SA0 SPI MOSI Signal / I2C Slave Address Bit 0, Pulled Up Inside Display by 47k Resistor
6 CS/I2C_SA1 SPI Chip Select Signal / I2C Slave Address Bit 1, Pulled Up Inside Display by 47k Resistor
7 INT Interrupt Signal, Active Low, Pulled Up Inside Display by 47k Resistor
8 PD Power Down Signal, Active Low, Pulled Up Inside Display by 47k Resistor
9 MODE Host Interface SPI(Pull Low) or I2C(Pull Up) Mode Select

Input, By Default Pulled Low Inside Display by 47k Resistor

10 AUDIO_OUT Audio Out Signal
11 NC Not Connected
12 NC Not Connected
13 NC Not Connected
14 NC Not Connected
15 NC Not Connected
16 NC Not Connected
17 BLVDD Backlight Power Supply, Can Be Connected to VDD
18 BLVDD Backlight Power Supply, Can Be Connected to VDD
19 BLGND Backlight Ground, Internally connected to GND
20 BLGND Backlight Ground, Internally connected to GND

8. FT80x Controller specifications

FT80x or EVE (Embedded Video Engine) simplifies the system architecture for advanced human machine interfaces (HMIs) by providing functionality for display, audio, and touch as well as an object oriented architecture approach that extends from display creation to the rendering of the graphics.

8.1. Serial host interface

Figure 5. SPI interface connection

Figure 6. I2C interface connection

SPI Interface – the SPI slave interface operates up to 30MHz.

Only SPI mode 0 is supported. The SPI interface is selected by default (MODE pin is internally pulled low by 47k resistor).

I²C Interface the I²C slave interface operates up to 3.4MHz, supporting standard-mode, fast-mode, fast-mode plus and high-speed mode.

The I²C device address is configurable between 20h to 23h depending on the I²C_SA[1:0] pin setting, i.e. the 7-bit I2C slave address is 0b’01000A1A0.

The I²C interface is selected when the MODE pin is tied to VDDIO.

8.2. Block diagram

Figure 7. FT800 Block diagram

8.3. Host Interface SPI mode 0

Figure 8. SPI timing diagram

For more information about FT800 controller please go to official FT800 Datasheet.

http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT800.pdf

8.4. Backlight driver block diagram

Backlight enable signal is internally connected to FT80x Backlight control pin. This pin is controlled by two FT80x’s registers.  One of them specifies the PWM output frequency, second one specifies the duty cycle. Refer to FT80x datasheet for more information.

Figure 9. Backlight driver block diagram

9. LCD timing characteristics

9.1. Timing Chart

Timing parameter (VDD=3.3V, GND=0V, Ta=25˚C)

PARAMETER SYMBOL MIN TYP MAX UNIT CONDITION
CLK Clock Time Tclk 1/Max(FCLK) 1/Min(FCLK) ns
CLK Pulse Duty Tchw 40 50 60 % TCLK
HSYNC to CLK Thc 1 CLK
HSYNC Width Thwh 1 CLK
VSYNC Width Tvwh 1 ns
HSYNC Period Time Th 60 63.56 67 ns
VSYNC Set-up Time Tvst 12 ns
VSYNC Hold Time Tvhd 12 ns
HSYNC Setup Time Thst 12 ns
HSYNC Hold Time Thhd 12 ns
Data Set-up Time Tdsu 12 ns D00~D23 to CLK
Data Hold Time Tdhd 12 ns D00~D23 to CLK
DEN Set-up Time Tesu 12 ns DEN to CLK

Figure 10. DE mode timing diagram

Figure 11. SYNC mode timing diagram

Figure 12. Timing diagram

9.2. 24Bit RGB Mode for 320 x RGB x 240

PARAMETER SYMBOL MIN TYP MAX UNIT CONDITION
CLK Frequency Fclk 7.0 8.0 9.0 MHz VDD=3.0V~3.6V
CLK Cycle Time Tclk 143 125 111 ns
CLK Pulse Duty Tcwh 40 50 60 %
Time that HSYNC to 1st Data Input (NTSC) Ths 40 70 255 CLK DDLY=70

Offset=0(fixed)

Figure 13. 24 bit RGB SYNC mode timing

10. Touch screen panel specifications

10.1. Electrical characteristics

10.1.1. For capacitive touch panel

DESCRIPTION SPECIFICATION
Operating Voltage DC 2.8~3.6V
Power Consumption (IDD) Active Mode 10~18mA
Sleep Mode 30~50μA
Interface I2C
Linearity <1.5%
Controller FT5206
I2C address 0x38 (7 bit address)
Resolution 896*640

10.1.2. For resistive touch panel

ITEM VALUE UNIT REMARK
Min. Typ. Max.
Linearity 1.5 % Analog X and Y directions
Terminal Resistance 200 900 X
100 600 Y
Insulation Resistance 20 MΩ DC 25V
Voltage 10 V DC
Chattering 10 ms 100kΩ pull-up
Transparency 78 %  

Note: Avoid operating with hard or sharp material such as a ball point pen or a mechanical pencil except a polyacetal pen (tip R0.8mm or less) or a finger

10.2. Mechanical characteristics

10.2.1 for capacitive touch panel

DESCRIPTION INL SPECIFICATION REMARK
Touch Panel Size 3.5  inch  
Outline Dimension (OD) 76.75 mm x 63.00mm Cover Lens Outline
Product Thickness 1.26mm  
Glass Thickness 0.7 mm  
Ink View Area 72.00mm x 54.50mm  
Sensor Active Area 73.25mm x 55.90mm  
Input Method 5 Finger  
Activation Force Touch  
Surface Hardness ≥7H  

10.2.2. For resistive touch panel

ITEM VALUE UNIT REMARK
Min. Typ. Max.
Activation Force 20 100 gf Note 1
Durability – Surface Scratching Write 100,000 characters Note 2
Durability-Surface Pitting 1,000,000 touches Note 3
Surface Hardness 3 H JIS K5400

Note 1: Force test condition, Input DC 5V on X direction, Drop off Polyacetal Stylus (R0.8), until output voltage stabilize, then get the R8.0mm Silicon rubber and do finger Activation force test. Next step, 9 points.

Note 2: Measurement surface area conditions, Scratch 100,000 times straight line on the film with a stylus change every 20,000 times with Force: 250gf, Speed: 60mm/sec by R0.8 polaceteal stylus.

Note 3: Pitting test, Pit 1, 000, 000 times on the film with R0.8 silicon rubber with Force: 250gf and Speed: 2 times/sec.

11. Inspection

Standard acceptance/rejection criteria for TFT module.

11.1. Inspection condition

Ambient conditions:

  •       Temperature: 25±°C
  •       Humidity: (60±10) %RH
  •       Illumination: Single fluorescent lamp non-directive (300 to 700 lux)

Viewing distance:

35±5cm between inspector bare eye and LCD.

Viewing Angle:

U/D: 45°/45°, L/R 45°/45°

11.2 Inspection standard

Item Criterion
Black spots, white spots, light leakage, Foreign Particle (round Type)

*Spots density: 10 mm

Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.3 mm 3
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0
Size >= 5”
Average Diameter Qualified Qty
D<0.2 mm Ignored
0.2 mm < D < 0.3 mm 4
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0
LCD black spots, white spots, light leakage (line Type)

*Spots density: 10 mm

Size < 5”
Length Width Qualified Qty
W< 0.02 Ignored
L < 3.0 0.02 < W <0.05 2
L < 2.5 0.05 < W <0.08
0.08 < W 0
Size >= 5”
Length Width Qualified Qty
W< 0.02 Ignored
L < 3.0 0.02 < W <0.05 4
L < 2.5 0.05 < W <0.08
0.08 < W 0
Item Criterion
Clear spots
Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.3 mm 3
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0
Size >= 5”
Average Diameter Qualified Qty
D<0.2 mm Ignored
0.2 mm < D < 0.3 mm 4
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0

*Spots density: 10 mm

Polarizer bubbles
Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.5 mm 3
0.5 mm < D < 1 mm 2
1 mm < D 0
Total Q’ty 3
Size >= 5”
Average Diameter Qualified Qty
D<0.25 mm Ignored
0.25 mm < D < 0.5 mm 3
0.5 mm < D 0
Electrical Dot Defect
Size < 5”
item Qualified Qty
Black do defect 4
Bright dot defect 2
Total Dot 5
Size >= 5”
item Qualified Qty
Black do defect 5
Bright dot defect 2
Total Dot 5
Item Criterion
Touch panel spot
Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.4 mm 5
0.4 mm < D < 0.5 mm 2
0.5 mm < D 0
Size >= 5”
Average Diameter Qualified Qty
D<0.25 mm Ignored
0.25 mm < D < 0.5 mm 4
0.5 mm < D 0
Touch panel White Line Scratch
Size < 5”
Length Width Qualified Qty
W< 0.02 Ignored
L < 3.0 0.02 < W <0.05 2
L < 2.5 0.05 < W <0.08
0.08 < W 0
Size >= 5”
Length Width Qualified Qty
W< 0.03 Ignored
L < 5.0 0.03 < W <0.05 2
0.05 < W 0

12. Reliability test

NO. TEST ITEM TEST CONDITION INSPECTION AFTER TEST
1 High Temperature Storage 80±2°C/240 hours Inspection after 2~4 hours storage at room temperature, the sample shall be free from defects:

1.  Air bubble in the LCD

2.  Seal leak

3.  Non-display

4.  Missing segments

5.  Glass crack

6.  Current Idd is twice higher than initial value

7.  The surface shall be free from damage

8.  Linearity must be no more than 1.5% by the linearity tester

9.  The Electric characteristics requirements shall be satisfied

2 Low Temperature Storage -30±2°C/240 hours
3 High Temperature Operating 70±2°C/240 hours
4 Low Temperature Operating -20±2°C/240 hours
5 Temperature Cycle -30±2°C~25~70±2°C × 30 cycles
6 Damp Proof Test 60°C ±5°C × 90%RH/160 hours
7 Vibration Test Frequency 10Hz~55Hz

Stroke: 1.5mm

Sweep: 10Hz~55Hz~10Hz 2 hours

For each direction of X, Y, Z

(6 hours for total)

8 Mechanical Shock 60G 6ms, ± X, ± Y, ± Z 3 times for each direction
9 Packing Drop Test Height: 80 cm

1 corner, 3 edges, 6 surfaces

10 Package Vibration Test Random vibration:

0.015G2/Hz from 5-200Hz

-6dB/Octave from 200-500Hz

2 hours for each direction of X, Y, Z

(6 hours for total)

11 Electrostatic Discharge Air: ±8KV 150pF/330Ω 5 times

Contact: ±4KV 150pF/330Ω 5 times

12 Hitting Test 1,000,000 times in the same point

Hitting pad: tip R3.75mm, Silicone rubber, Hardness: 40deg.

Load: 2.45N

Hitting speed: Twice/sec

Electric load: none

Test area should be at 1.8mm inside of insulation.

13 Pen Sliding Durability Test 100,000 times minimum

Hitting pad: tip R0.8mm plastic pen

Load: 1.47N

Sliding speed: 60 mm/sec

Electric load: none

Test area should be at 1.8mm inside of insulation.

Remark:

1. The test samples should be applied to only one test item.

2. Sample size for each test item is 5~10pcs.

3. For Damp Proof Test, Pure water (Resistance

10MΩ) should be used.

4. In case of malfunction defect caused by ESD damage, if it would be recovered to normal state after resetting, it would be judge as a good part.

5. EL evaluation should be excepted from reliability test with humidity and temperature: Some defects such as

black spot/blemish can happen by natural chemical reaction with humidity and Fluorescence EL has.

6. Failure Judgment Criterion: Basic Specification, Electrical Characteristic, Mechanical Characteristic, Optical

Characteristic.

Note 1: Without water condensation.

Note 2: The function test shall be conducted after 2 hours storage at the room temperature and humidity after removed from the test chamber.

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