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IOT 5″

This datasheet gives detailed information about the Riverdi IoT displays. The displays come in different versions: with a capacitive or resistive touchscreen, or with a decorative cover glass.

These are first IoT displays on the market that solve the problem of wireless communication. Thanks to the ESP32 microcontroller onboard it’s easy to send and receive data over WiFi and Bluetooth. The displays are also Python-programmable, as they have a pre-loaded Premium Zerynth license onboard. They offer tremendous graphical possibilities through Bridgetek’s BT81x graphics controllers. Finally, they are easily expandable, with two MikroBUS connectors, and two Grove connectors.

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Rev.1.2
2019-06-07

ITEMCONTENTSUNIT
LCD TypeTFT/Transmissive/Normally white/
Size5.0Inch
Viewing Direction12:00 (without image inversion)O’ Clock
Gray Scale Inversion Direction6:00O’ Clock
Number of Dots800 x (RGB) × 480/
Chip on boardBT81x, ESP32 WROOM 32/
Interface ConnectionWiFi, Bluetooth, USB/
Module Graphic Memory1 MB (BT81x) + 64 Mb (nor flash)/
Zerynth Python LicenseIncluded/
MikroBus Output2/
Groove Connectors2/
BrightnessRTP module480cd/m2
CTP module510
Color Depth16.7M/
Pixel ArrangementRGB Vertical Stripe/
Surface TreatmentAnti-glare / Clear (for CTP)/
Input Voltage5.0V

Note 1: RoHS, REACH SVHC compliant

Note 2: LCM weight tolerance: ± 5%.

1. Module classification information

RVT50xQExWx0x
1.2.3.4.5.6.7.8.9.10.
1.BRANDRV – Riverdi
2.PRODUCT TYPET – TFT Standard

F – TFT Custom

3.DISPLAY SIZE50 – 5.0”
4.MODEL SERIAL NO.A (A-Z)

U – UxTouch

5.RESOLUTIONQ– 800×480 px
6.INTERFACEE – IOT display
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.VERSION00 (00-99)

2. Assembly guide – integration

Three options of rear side adhesive tape are available: double side adhesive tape 0.2 mm with 3M 467MP glue, foam double side adhesive tape 0.5 mm with DST 3M 9495LE glue or without any tape.

There are also two versions of glass color: black and white.

Rear side adhesive tape options:

Double side adhesive tape with DST 3M 9495LE glue (total thickness 0.2mm)Foam double side adhesive tape with 3M 9495LE glue (total thickness 0.5mm)Without tape

 

Cover glass color options:

BLACKWHITE

Product options:

NAME OF THE PRODUCTPART NUMBERDESCRIPTION
RiTFT-50-IOT-RESRVT50AQEFWR00BT816, frame, RTP
RiTFT-50-IOT-CAPRVT50AQEFWC00BT815, frame, CTP
RiTFT-50-IOT-UXBRVT50UQENWC01BT815, UxTouch Black
RiTFT-50-IOT-UXWRVT50UQENWC04BT815, UxTouch White

2.1. UxTouch assembly

UxTouch are LCD TFT displays with specially designed projected capacitive touch panels. UxTouch display can be mounted without any holed in the housing. Our standard UxTouch displays include double-sided adhesive tape (DST) to stick TFT easily to the housing. Basic series include 4.3”, 5.0” and 7.0” display sizes.

UxTouch models with double-side adhesive tape (PN with endings 00, 01, 03, 04) can be mounted by connecting the glass to the housing. Riverdi recommends to use support brackets assembled to display’s back. An additional support will stiffen the whole structure and minimize the influence of external factors such as vibration. Figure 1 and Figure 2 below show examples of using support elements.

Figure 1. Example of using support brackets

Figure 2. Example of using support pylons

2.2. 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. Module drawing

4. Absolute maximum ratings

PARAMETERSYMBOLMINMAXUNIT
Supply VoltageVBUS07.0V
USB data linesD- and D+-0.53.8V
ESP32_GPIOVGPIO-0.33.6V
Cumulative IO output currentIGPIO1.1A
Operating TemperatureTOP-2070°C
Storage TemperatureTST-3080°C
HumidityRH90% (Max 60°C)RH

5. Electrical characteristics

PARAMETER

SYMBOL

MIN

TYP

MAX

UNIT

Input Voltage

VBUS

TBD

5.0

5.5

V

USB Input Switching Threshold

VIn

1.0

1.2

1.5

V

USB Input Switching Hysteresis

VHys

20

25

30

mV

Input Voltage ‘ H ‘ level for GPIO

VIH

2.5

3.3

V

Input Voltage ‘ L ‘ level for GPIO

VIL

0

0.6

V

Average Operating Current

IAO

150

mA

Minimum current delivered by power supply

IMINP

550

mA

6. Electro-optical characteristics

ITEMSYMBOLCONDITIONMINTYPMAXUNITREMARKNOTE
Response TimeTr+Tfθ=0°

=0°

Ta=25

20msFigure 44
Contrast RatioCr500Figure 51
Luminance Uniformityδ WHITE7580%Figure 53
Surface LuminanceTFT+CTPLv500540

cd/m2Figure 52
TFT+RTP450500
 

Viewing Angle Range

θ = 90°4050degFigure 

 

6

= 270°6070degFigure 6
= 0°6070degFigure
= 180°6070degFigure 6
 

 

CIE (x, y)

Chromaticity

Redxθ=0°

=0°

Ta=25

0.5400.5900.640Figure 5 

 

 

5

y0.3000.3500.400
Greenx0.2980.3480.398
y0.5200.5700.620
Bluex0.0950.1450.195
y0.0600.1100.160
Whitex0.2700.3200.370
y0.3100.3600.410
LED Lifetime3000050000Hrs9

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

CN5 Micro USB
PIN NO.SYMBOLDESCRIPTION
1VBUSPower Supply
2D-Data –
3D+Data +
4IDNC
5GNDGround
6SHIELDShorted to Ground
POWER CN Manufacturer PN: JS-1143R-02
PIN NO.SYMBOLDESCRIPTION
1VBUSPower Supply
2GNDGround
AUDIO CN2
PIN NO.SYMBOLDESCRIPTION
1GNDGround
2F_AFiltered Audio Output before Power Amplifier
3SP-Negative BTL output of Power Amplifier
4SP+Positive BTL output of Power Amplifier
MIKROBUS 1
PIN NO.SYMBOLDESCRIPTION
1ANSENSOR_VN signal from ESP32-WROOM-32
2RSTGPIO0 signal from ESP32-WROOM-32
3CSCS_M1 on SPI bus (ESP32_GPIO21)
4SCKClock signal for SPI bus (ESP32_GPIO14), Internally 47k Pull UP
5MISOMaster Input, Slave Output for SPI bus (ESP32_GPIO2), Internally 47k Pull UP
6MOSISlave Input, Master Output for SPI bus (ESP32_GPIO15), Internally 47k Pull UP
7VDDPower
8GNDGround
9PWMGPIO23 signal from ESP32-WROOM-32
10INTGPIO25 signal from ESP32-WROOM-32
11RXReceive line for UART2 (ESP32_GPIO3)
12TXTransmit line for UART2 (ESP32_GPIO1)
13SCLClock signal for I2C bus (ESP32_GPIO10), Internally 2k2 Pull UP
14SDAClock signal for I2C bus (ESP32_GPIO13), Internally 2k2 Pull UP
15VBUSPower
16GNDGround
MIKROBUS 2
PIN NO.SYMBOLDESCRIPTION
1ANSENSOR_VN signal from ESP32-WROOM-32
2RSTGPIO0 signal from ESP32-WROOM-32
3CSCS_M1 on SPI bus (ESP32_GPIO21)
4SCKClock signal for SPI bus (ESP32_GPIO14), Internally 47k Pull UP
5MISOMaster Input, Slave Output for SPI bus (ESP32_GPIO2), Internally 47k Pull UP
6MOSISlave Input, Master Output for SPI bus (ESP32_GPIO15), Internally 47k Pull UP
7VDDPower
8GNDGround
9PWMGPIO23 signal from ESP32-WROOM-32
10INTGPIO25 signal from ESP32-WROOM-32
11RXReceive line for UART2 (ESP32_GPIO3)
12TXTransmit line for UART2 (ESP32_GPIO1)
13SCLClock signal for I2C bus (ESP32_GPIO10), Internally 2k2 Pull UP
14SDAClock signal for I2C bus (ESP32_GPIO13), Internally 2k2 Pull UP
15VBUSPower
16GNDGround
GROVE CN6
PIN NO.SYMBOLDESCRIPTION
1RXUART RX Data Line
2TXUART TX Data Line
3VDDPower supply
4GNDGround
GROVE CN7
PIN NO.SYMBOLDESCRIPTION
1GPIO10General Purpose Input/Output
2GPIO13General Purpose Input/Output
3VDDPower supply
4GNDGround

Figure 7. Module block diagram

8. ESP32 specification

The ESP32 integrates the Bluetooth, Bluetooth Low Energy and Wifi. That ensures that the module has a physical direct connection to the Internet via WiFi router and the Bluetooth allows you to connect the smartphone or broadcast low energy beacons for detection. These embedded chip is designed to be scalable and adaptable to a and variety of tasks (need examples). Thus it has possibility to integrate rich set of peripherials – the module is programmable via USB UART bridge.

For more information about integration of the module with Zerynth application, please see:

https://docs.zerynth.com/latest/official/board.zerynth.riverdi_tft50_iotxxx/docs/index.html

9. BT8x Controller specifications

BT8x or EVE3 (Embedded Video Engine 3) 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.

For Zerynth-ready EVE library please see: https://docs.zerynth.com/latest/o_bridgetek.html

9.1. Block diagram

Figure 8. BT8x Block diagram

9.2. Host interface SPI mode 0

Figure 9. SPI timing diagramm

For more information about BT8x controller please go to official BT8x website.

https://www.ftdichip.com/Products/ICs/BT81X.html

10. LCD timing characteristics

10.1. Clock and data input time diagram

Figure 10. Clock and data input time diagram

Figure 11.. Vertical input timing diagram

10.2. Parallel RGB timing table

PARAMETERSYMBOLMINTYPMAXUNIT
Horizontal Display AreaThd800DCLK
DCLK FrequencyFclk3050MHz
One Horizontal LineTh8899281143DCLK
HS pulse widthThpw148255DCLK
HS BlankingThb88DCLK
HS Front PorchThfp140255DCLK
Vertical Display AreaTvd480TH
VS period timeTv513525767TH
VS pulse widthTvpw33255TH
VS BlankingTvb32TH
VS Front PorchTvfp113255TH

10.2.1   Proposed Bridgetek register values for RGB interface

BT81xVALUE
REG_HCYCLE1056
REG_HSIZE800
REG_HOFFEST46
REG_HSYNC00
REG_HSYNC110
REG_VCYCLE525
REG_VSIZE480
REG_VOFFSET23
REG_VSYNC00
REG_VSYNC110
REG_PCLK2

11. Touch screen panel specification

11.1. Electrical characteristics

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

11.1.1. For capacitive touch panel

DESCRIPTIONSPECIFICATION
Operating VoltageDC 2.8~3.6V
Power Consumption (IDD)Active ModeTBD μA
Sleep ModeTBD μA
InterfaceI2C
Linearity<1.5%
ControllerFT5446
I2C address0x38 (7 bit address)
Resolution800*480

11.1.2. For resistive touch panel

ITEMVALUEUNITREMARK
Min.Typ.Max.
Linearity-1.51.5%Analog X and Y directions
Terminal Resistance3501000ΩX
100450ΩY
Insulation ResistanceDC 25V
Voltage10VDC
Chattering10ms100kΩ pull-up
Transparency80%JIS K7105

11.2. Mechanical characteristics

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.

11.2.1 for capacitive touch panel

DESCRIPTIONINL SPECIFICATIONREMARK
Touch Panel Size5.0  inch
Outline Dimension (OD)120.3 mm x 75.4 mmCover Lens Outline
Outline Dimension (OD) – UxTouch136.00 x 92.80mmCover Lens Outline
Product Thickness1.9 mm
Glass Thickness0.7 mm
Ink View Area109.00mm x 65.80mm
Sensor Active Area110.0mm x 66.80mm
Input Method5 Finger
Activation ForceTouch
Surface Hardness≥7H

11.2.2. For resistive touch panel

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.

ITEMVALUEUNITREMARK
Min.Typ.Max.
Activation Force80gfNote 1
Durability-Surface ScratchingWrite 100,000charactersNote 2
Durability-Surface Pitting1,000,000touchesNote 3
Surface Hardness3HJIS K5400

12. inspection

Standard acceptance/rejection criteria for TFT module.

12.1. 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°

12.2 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

13. Reliability test

NO.TEST ITEMTEST CONDITIONREMARKS
1High Temperature Storage80±2°C/240hoursNote 2
2Low Temperature Storage-30±2°C/240hoursNote 1,2
3High Temperature Operating70±2°C/240hours
4Low Temperature Operating-20±2°C/240hoursNote 1
5Temperature Cycle-30±2°C~25±2°C ~80±2°C × 20 cycles

(30min.)  (5min.)   (30min.)

Note 1,2
6Damp Proof Test60°C ±5°C × 90%RH/240hours
7Vibration TestFrequency 10Hz~55Hz

Amplitude of vibration : 1.5mm

Sweep time: 12 min

X, Y, Z 2 hours for each direction.

8Package Drop TestHeight:60 cm

1 corner, 3 edges, 6 surfaces

9ESD TestAir: ±4KV 150pF/330Ω 5 times

Contact: ±2KV 150pF/330Ω 5 times

10ESD Test for RTPAir: ±8KV 150pF/330Ω 5 times

Contact: ±4KV 150pF/330Ω 5 times

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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