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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.

Rev.1.2
2019-06-07

ITEM CONTENTS UNIT
LCD Type TFT/Transmissive/Normally white /
Size 5.0 Inch
Viewing Direction 12:00 (without image inversion) O’ Clock
Gray Scale Inversion Direction 6:00 O’ Clock
Number of Dots 800 x (RGB) × 480 /
Chip on board BT81x, ESP32 WROOM 32 /
Interface Connection WiFi, Bluetooth, USB /
Module Graphic Memory 1 MB (BT81x) + 64 Mb (nor flash) /
Zerynth Python License Included /
MikroBus Output 2 /
Groove Connectors 2 /
Brightness RTP module 480 cd/m2
CTP module 510
Color Depth 16.7M /
Pixel Arrangement RGB Vertical Stripe /
Surface Treatment Anti-glare / Clear (for CTP) /
Input Voltage 5.0 V

Note 1: RoHS, REACH SVHC compliant

Note 2: LCM weight tolerance: ± 5%.

1. Module classification information

RV T 50 x Q E x W x 0x
1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
1. BRAND RV – Riverdi
2. PRODUCT TYPE T – TFT Standard

F – TFT Custom

3. DISPLAY SIZE 50 – 5.0”
4. MODEL SERIAL NO. A (A-Z)

U – UxTouch

5. RESOLUTION Q– 800×480 px
6. INTERFACE E – IOT display
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 00 (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:

BLACK WHITE

Product options:

NAME OF THE PRODUCT PART NUMBER DESCRIPTION
RiTFT-50-IOT-RES RVT50AQEFWR00 BT816, frame, RTP
RiTFT-50-IOT-CAP RVT50AQEFWC00 BT815, frame, CTP
RiTFT-50-IOT-UXB RVT50UQENWC01 BT815, UxTouch Black
RiTFT-50-IOT-UXW RVT50UQENWC04 BT815, 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

PARAMETER SYMBOL MIN MAX UNIT
Supply Voltage VBUS 0 7.0 V
USB data lines D- and D+ -0.5 3.8 V
ESP32_GPIO VGPIO -0.3 3.6 V
Cumulative IO output current IGPIO 1.1 A
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

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

ITEM SYMBOL CONDITION MIN TYP MAX UNIT REMARK NOTE
Response Time Tr+Tf θ=0°

=0°

Ta=25

20 ms Figure 4 4
Contrast Ratio Cr 500 Figure 5 1
Luminance Uniformity δ WHITE 75 80 % Figure 5 3
Surface Luminance TFT+CTP Lv 500 540

cd/m2 Figure 5 2
TFT+RTP 450 500
 

Viewing Angle Range

θ = 90° 40 50 deg Figure  

 

6

= 270° 60 70 deg Figure 6
= 0° 60 70 deg Figure
= 180° 60 70 deg Figure 6
 

 

CIE (x, y)

Chromaticity

Red x θ=0°

=0°

Ta=25

0.540 0.590 0.640 Figure 5  

 

 

5

y 0.300 0.350 0.400
Green x 0.298 0.348 0.398
y 0.520 0.570 0.620
Blue x 0.095 0.145 0.195
y 0.060 0.110 0.160
White x 0.270 0.320 0.370
y 0.310 0.360 0.410
LED Lifetime 30000 50000 Hrs 9

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. SYMBOL DESCRIPTION
1 VBUS Power Supply
2 D- Data –
3 D+ Data +
4 ID NC
5 GND Ground
6 SHIELD Shorted to Ground
POWER CN Manufacturer PN: JS-1143R-02
PIN NO. SYMBOL DESCRIPTION
1 VBUS Power Supply
2 GND Ground
AUDIO CN2
PIN NO. SYMBOL DESCRIPTION
1 GND Ground
2 F_A Filtered Audio Output before Power Amplifier
3 SP- Negative BTL output of Power Amplifier
4 SP+ Positive BTL output of Power Amplifier
MIKROBUS 1
PIN NO. SYMBOL DESCRIPTION
1 AN SENSOR_VN signal from ESP32-WROOM-32
2 RST GPIO0 signal from ESP32-WROOM-32
3 CS CS_M1 on SPI bus (ESP32_GPIO21)
4 SCK Clock signal for SPI bus (ESP32_GPIO14), Internally 47k Pull UP
5 MISO Master Input, Slave Output for SPI bus (ESP32_GPIO2), Internally 47k Pull UP
6 MOSI Slave Input, Master Output for SPI bus (ESP32_GPIO15), Internally 47k Pull UP
7 VDD Power
8 GND Ground
9 PWM GPIO23 signal from ESP32-WROOM-32
10 INT GPIO25 signal from ESP32-WROOM-32
11 RX Receive line for UART2 (ESP32_GPIO3)
12 TX Transmit line for UART2 (ESP32_GPIO1)
13 SCL Clock signal for I2C bus (ESP32_GPIO10), Internally 2k2 Pull UP
14 SDA Clock signal for I2C bus (ESP32_GPIO13), Internally 2k2 Pull UP
15 VBUS Power
16 GND Ground
MIKROBUS 2
PIN NO. SYMBOL DESCRIPTION
1 AN SENSOR_VN signal from ESP32-WROOM-32
2 RST GPIO0 signal from ESP32-WROOM-32
3 CS CS_M1 on SPI bus (ESP32_GPIO21)
4 SCK Clock signal for SPI bus (ESP32_GPIO14), Internally 47k Pull UP
5 MISO Master Input, Slave Output for SPI bus (ESP32_GPIO2), Internally 47k Pull UP
6 MOSI Slave Input, Master Output for SPI bus (ESP32_GPIO15), Internally 47k Pull UP
7 VDD Power
8 GND Ground
9 PWM GPIO23 signal from ESP32-WROOM-32
10 INT GPIO25 signal from ESP32-WROOM-32
11 RX Receive line for UART2 (ESP32_GPIO3)
12 TX Transmit line for UART2 (ESP32_GPIO1)
13 SCL Clock signal for I2C bus (ESP32_GPIO10), Internally 2k2 Pull UP
14 SDA Clock signal for I2C bus (ESP32_GPIO13), Internally 2k2 Pull UP
15 VBUS Power
16 GND Ground
GROVE CN6
PIN NO. SYMBOL DESCRIPTION
1 RX UART RX Data Line
2 TX UART TX Data Line
3 VDD Power supply
4 GND Ground
GROVE CN7
PIN NO. SYMBOL DESCRIPTION
1 GPIO10 General Purpose Input/Output
2 GPIO13 General Purpose Input/Output
3 VDD Power supply
4 GND Ground

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

PARAMETER SYMBOL MIN TYP MAX UNIT
Horizontal Display Area Thd 800 DCLK
DCLK Frequency Fclk 30 50 MHz
One Horizontal Line Th 889 928 1143 DCLK
HS pulse width Thpw 1 48 255 DCLK
HS Blanking Thb 88 DCLK
HS Front Porch Thfp 1 40 255 DCLK
Vertical Display Area Tvd 480 TH
VS period time Tv 513 525 767 TH
VS pulse width Tvpw 3 3 255 TH
VS Blanking Tvb 32 TH
VS Front Porch Tvfp 1 13 255 TH

10.2.1   Proposed Bridgetek register values for RGB interface

BT81x VALUE
REG_HCYCLE 1056
REG_HSIZE 800
REG_HOFFEST 46
REG_HSYNC0 0
REG_HSYNC1 10
REG_VCYCLE 525
REG_VSIZE 480
REG_VOFFSET 23
REG_VSYNC0 0
REG_VSYNC1 10
REG_PCLK 2

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

DESCRIPTION SPECIFICATION
Operating Voltage DC 2.8~3.6V
Power Consumption (IDD) Active Mode TBD μA
Sleep Mode TBD μA
Interface I2C
Linearity <1.5%
Controller FT5446
I2C address 0x38 (7 bit address)
Resolution 800*480

11.1.2. For resistive touch panel

ITEM VALUE UNIT REMARK
Min. Typ. Max.
Linearity -1.5 1.5 % Analog X and Y directions
Terminal Resistance 350 1000 Ω X
100 450 Ω Y
Insulation Resistance DC 25V
Voltage 10 V DC
Chattering 10 ms 100kΩ pull-up
Transparency 80 % 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

DESCRIPTION INL SPECIFICATION REMARK
Touch Panel Size 5.0  inch
Outline Dimension (OD) 120.3 mm x 75.4 mm Cover Lens Outline
Outline Dimension (OD) – UxTouch 136.00 x 92.80mm Cover Lens Outline
Product Thickness 1.9 mm
Glass Thickness 0.7 mm
Ink View Area 109.00mm x 65.80mm
Sensor Active Area 110.0mm x 66.80mm
Input Method 5 Finger
Activation Force Touch
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.

ITEM VALUE UNIT REMARK
Min. Typ. Max.
Activation Force 80 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

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

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

13. Reliability test

NO. TEST ITEM TEST CONDITION REMARKS
1 High Temperature Storage 80±2°C/240hours Note 2
2 Low Temperature Storage -30±2°C/240hours Note 1,2
3 High Temperature Operating 70±2°C/240hours
4 Low Temperature Operating -20±2°C/240hours Note 1
5 Temperature Cycle -30±2°C~25±2°C ~80±2°C × 20 cycles

(30min.)  (5min.)   (30min.)

Note 1,2
6 Damp Proof Test 60°C ±5°C × 90%RH/240hours
7 Vibration Test Frequency 10Hz~55Hz

Amplitude of vibration : 1.5mm

Sweep time: 12 min

X, Y, Z 2 hours for each direction.

8 Package Drop Test Height:60 cm

1 corner, 3 edges, 6 surfaces

9 ESD Test Air: ±4KV 150pF/330Ω 5 times

Contact: ±2KV 150pF/330Ω 5 times

10 ESD Test for RTP Air: ±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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