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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

ITEMCONTENTSUNIT
LCD TypeTFT/Transmissive/Normally white/
Size3.5Inch
Viewing Direction12:00 (without image inversion)O’ Clock
Gray Scale Inversion Direction6:00O’ Clock
Number of Dots320 x (RGB) × 240/
Driver ICFT80x/
Interface TypeSPI/I2C/
Brightnessno touch module540cd/m2
CTP module480
RTP module450
Color Depth262k/
Pixel ArrangementRGB Vertical Stripe/
Surface TreatmentAnti-glare / Clear (for CTP)/
Input Voltage3.3V

Note 1: RoHS, REACH SVHC compliant

Note 2: LCM weight tolerance: ± 5%.

1. Module classification information

RVT35A320 240CXWx0x
1.2.3.4.5.6.7.8.9.10.
1.BRANDRV – Riverdi
2.PRODUCT TYPET – TFT Standard
3.DISPLAY SIZE35 – 3.5”
4.MODEL SERIAL NO.A (A-Z)
5.RESOLUTION320240– 320×240 px
6.INTERFACEC– TFT+controller FT8xx
7.FRAMEN – No Frame

F – Mounting Frame

8.BACKLIGHT TYPEW – LED White
9.TOUCH PANELN – No Touch Panel

R – Resistive Touch Panel

C – Capacitive Touch Panel

10.VERSION0x (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

PARAMETERSYMBOLMINMAXUNIT
Supply Voltage for Logic (VDD pin)VDD04.0V
Supply Voltage for Logic (BLVDD pins)BLVDD07.0V
Input Voltage For LogicVINGNDVDDV
Operating TemperatureTOP-2070°C
Storage TemperatureTST-3080°C
HumidityRH90% (Max 60°C)RH

5. Electrical characteristics

PARAMETERSYMBOLMINTYPMAXUNITNOTES
Supply Voltage For ModuleVDD3.03.33.6V
Input Voltage For LED inverterBLVDD2.83.35.5V
Input Current (Exclude LED Backlight)IDD5569mAVDD=3.3V
LED Backlight CurrentIDDbacklight150187mABLVDD=3.3V
LED Backlight CurrentIDDbacklight93117mABLVDD=5V
Total Input current (Include LED Backlight 100%)IDDtotal205257mABLVDD=3.3V
Input Voltage ‘H’ levelVih0.7VDDVDDV
Input Voltage ‘L’ levelVilGND0.2VDDV
LED Life Time4000050000HrsNote1

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

6. Electro-optical characteristics

ITEMSYMBOLCONDITIONMINTYPMAXUNITREMARKNOTE
Response TimeTr+Tf
θ=0°
∅=0°
Ta=25°C
2530msFigure 14
Contrast RatioCr350Figure 21
Luminance Uniformityδ WHITE7580%Figure 23
Surface Luminance
TFT
Lv
540
cd/m2
Figure 2
2
TFT+CTP480
TFT+RTP450
Viewing Angle Range
θ
∅ = 90°3040degFigure 3
6
∅ = 270°5060degFigure 3
∅ = 0°5060degFigure 3
∅ = 180°5060degFigure 3
CIE (x, y)
Chromaticity
Red
x
θ=0°
∅=0°
Ta=25°C
0.5740.6240.674
Figure 2
5
y0.3180.3680.418
Green
x0.30.350.4
y0.50.550.6
Blue
x0.0930.1430.193
y0.0690.1190.169
White
x0.260.310.36
y0.2830.3330.383
NTSC50%

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.SYMBOLDESCRIPTION
1VDDPower Supply
2GNDGround
3SPI_SCLK/ I2C_SCLSPI SCK Signal / I2C SCL Signal, Pulled Up Inside Display by 47k Resistor
4MISO/ I2C_SDASPI MISO Signal / I2C SDA Signal, Pulled Up Inside Display by 47k Resistor
5MOSI/ I2C_SA0SPI MOSI Signal / I2C Slave Address Bit 0, Pulled Up Inside Display by 47k Resistor
6CS/I2C_SA1SPI Chip Select Signal / I2C Slave Address Bit 1, Pulled Up Inside Display by 47k Resistor
7INTInterrupt Signal, Active Low, Pulled Up Inside Display by 47k Resistor
8PDPower Down Signal, Active Low, Pulled Up Inside Display by 47k Resistor
9MODEHost Interface SPI(Pull Low) or I2C(Pull Up) Mode Select

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

10AUDIO_OUTAudio Out Signal
11NCNot Connected
12NCNot Connected
13NCNot Connected
14NCNot Connected
15NCNot Connected
16NCNot Connected
17BLVDDBacklight Power Supply, Can Be Connected to VDD
18BLVDDBacklight Power Supply, Can Be Connected to VDD
19BLGNDBacklight Ground, Internally connected to GND
20BLGNDBacklight 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)

PARAMETERSYMBOLMINTYPMAXUNITCONDITION
CLK Clock TimeTclk1/Max(FCLK)1/Min(FCLK)ns
CLK Pulse DutyTchw405060%TCLK
HSYNC to CLKThc1CLK
HSYNC WidthThwh1CLK
VSYNC WidthTvwh1ns
HSYNC Period TimeTh6063.5667ns
VSYNC Set-up TimeTvst12ns
VSYNC Hold TimeTvhd12ns
HSYNC Setup TimeThst12ns
HSYNC Hold TimeThhd12ns
Data Set-up TimeTdsu12nsD00~D23 to CLK
Data Hold TimeTdhd12nsD00~D23 to CLK
DEN Set-up TimeTesu12nsDEN 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

PARAMETERSYMBOLMINTYPMAXUNITCONDITION
CLK FrequencyFclk7.08.09.0MHzVDD=3.0V~3.6V
CLK Cycle TimeTclk143125111ns
CLK Pulse DutyTcwh405060%
Time that HSYNC to 1st Data Input (NTSC)Ths4070255CLKDDLY=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

DESCRIPTIONSPECIFICATION
Operating VoltageDC 2.8~3.6V
Power Consumption (IDD)Active Mode10~18mA
Sleep Mode30~50μA
InterfaceI2C
Linearity<1.5%
ControllerFT5206
I2C address0x38 (7 bit address)
Resolution896*640

10.1.2. For resistive touch panel

ITEMVALUEUNITREMARK
Min.Typ.Max.
Linearity1.5%Analog X and Y directions
Terminal Resistance200900X
100600Y
Insulation Resistance20MΩDC 25V
Voltage10VDC
Chattering10ms100kΩ pull-up
Transparency78% 

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

DESCRIPTIONINL SPECIFICATIONREMARK
Touch Panel Size3.5  inch 
Outline Dimension (OD)76.75 mm x 63.00mmCover Lens Outline
Product Thickness1.26mm 
Glass Thickness0.7 mm 
Ink View Area72.00mm x 54.50mm 
Sensor Active Area73.25mm x 55.90mm 
Input Method5 Finger 
Activation ForceTouch 
Surface Hardness≥7H 

10.2.2. For resistive touch panel

ITEMVALUEUNITREMARK
Min.Typ.Max.
Activation Force20100gfNote 1
Durability – Surface ScratchingWrite 100,000charactersNote 2
Durability-Surface Pitting1,000,000touchesNote 3
Surface Hardness3HJIS 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

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

*Spots density: 10 mm

Size < 5”
Average DiameterQualified Qty
D < 0.2 mmIgnored
0.2 mm < D < 0.3 mm3
0.3 mm < D < 0.5 mm2
0.5 mm < D0
Size >= 5”
Average DiameterQualified Qty
D<0.2 mmIgnored
0.2 mm < D < 0.3 mm4
0.3 mm < D < 0.5 mm2
0.5 mm < D0
LCD black spots, white spots, light leakage (line Type)

*Spots density: 10 mm

Size < 5”
LengthWidthQualified Qty
W< 0.02Ignored
L < 3.00.02 < W <0.052
L < 2.50.05 < W <0.08
0.08 < W0
Size >= 5”
LengthWidthQualified Qty
W< 0.02Ignored
L < 3.00.02 < W <0.054
L < 2.50.05 < W <0.08
0.08 < W0
ItemCriterion
Clear spots
Size < 5”
Average DiameterQualified Qty
D < 0.2 mmIgnored
0.2 mm < D < 0.3 mm3
0.3 mm < D < 0.5 mm2
0.5 mm < D0
Size >= 5”
Average DiameterQualified Qty
D<0.2 mmIgnored
0.2 mm < D < 0.3 mm4
0.3 mm < D < 0.5 mm2
0.5 mm < D0

*Spots density: 10 mm

Polarizer bubbles
Size < 5”
Average DiameterQualified Qty
D < 0.2 mmIgnored
0.2 mm < D < 0.5 mm3
0.5 mm < D < 1 mm2
1 mm < D0
Total Q’ty3
Size >= 5”
Average DiameterQualified Qty
D<0.25 mmIgnored
0.25 mm < D < 0.5 mm3
0.5 mm < D0
Electrical Dot Defect
Size < 5”
itemQualified Qty
Black do defect4
Bright dot defect2
Total Dot5
Size >= 5”
itemQualified Qty
Black do defect5
Bright dot defect2
Total Dot5
ItemCriterion
Touch panel spot
Size < 5”
Average DiameterQualified Qty
D < 0.2 mmIgnored
0.2 mm < D < 0.4 mm5
0.4 mm < D < 0.5 mm2
0.5 mm < D0
Size >= 5”
Average DiameterQualified Qty
D<0.25 mmIgnored
0.25 mm < D < 0.5 mm4
0.5 mm < D0
Touch panel White Line Scratch
Size < 5”
LengthWidthQualified Qty
W< 0.02Ignored
L < 3.00.02 < W <0.052
L < 2.50.05 < W <0.08
0.08 < W0
Size >= 5”
LengthWidthQualified Qty
W< 0.03Ignored
L < 5.00.03 < W <0.052
0.05 < W0

12. Reliability test

NO.TEST ITEMTEST CONDITIONINSPECTION AFTER TEST
1High Temperature Storage80±2°C/240 hoursInspection 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

2Low Temperature Storage-30±2°C/240 hours
3High Temperature Operating70±2°C/240 hours
4Low Temperature Operating-20±2°C/240 hours
5Temperature Cycle-30±2°C~25~70±2°C × 30 cycles
6Damp Proof Test60°C ±5°C × 90%RH/160 hours
7Vibration TestFrequency 10Hz~55Hz

Stroke: 1.5mm

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

For each direction of X, Y, Z

(6 hours for total)

8Mechanical Shock60G 6ms, ± X, ± Y, ± Z 3 times for each direction
9Packing Drop TestHeight: 80 cm

1 corner, 3 edges, 6 surfaces

10Package Vibration TestRandom 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)

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

Contact: ±4KV 150pF/330Ω 5 times

12 Hitting Test1,000,000 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.

13Pen Sliding Durability Test100,000 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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