Description
Smart Home LCD 4-inch Square TFT LCD 4″
Discover the cutting-edge SHENZHEN TECHSTAR ELECTRONICS INCORPORATED CO., LTD Â SF-TO400DX-8979A-CT TFT LCD display module, a marvel of modern technology. This transmissive type color active matrix TFT (Thin Film Transistor) liquid crystal display (LCD) harnesses the power of amorphous silicon TFT as a switching device. Boasting a resolution of 320 (RGB) X 320 dots on a 4-inch screen, it mesmerizes with a palette of up to 262k colors.
But that’s not all. The SF-TO400DX-8979A-CT TFT LCD model is a versatile performer, supporting both MCU and SPI interfaces. Its driving LCD panel operates flawlessly within a supply voltage (VCC) range of 2.7V to 3.6V, with the typical value resting comfortably at 3.3V.
Temperature extremes are no match for this powerhouse. Operating seamlessly from -20℃ to +70℃, and with storage capabilities ranging from -30℃ to +80℃, it ensures reliability in any environment.
Equipped with a PCAP capacitive touch screen, this LCD module transcends ordinary displays. Its applications are as diverse as they are essential, from automation and GPS to medical and industrial equipment. It finds its place in security systems, smart home setups, and IoT ecosystems, enhancing every aspect of daily life.
Whether it’s adorning a car dashboard, powering a water ionizer, or adding flair to a car door display system, the SF-TO400DX-8979A-CT proves its worth with every vibrant image it produces. Experience the future of display technology today.
Product Features:
| Product: | TFT 4″ Inch |
|---|---|
| Resolution: | 320X320 Pixels |
| Interface: | MCU SPI |
| Touch Screen: | With PCAP Capacitive Touch Screen |
| Outline Dimension: | 84.0(W) x 84.0 (H) x 3.37 (T) mm (with touch) |
| Viewing Direction: | All Viewing Angles (85/85/85/85) |
| Pin Number: | 40 Pins |
| Connection: | Plugging |
| Surface Luminance: | 300 Cd/m2 |
| Supply Power: | 3.3 V |
| Current Consumption: | 20 mA |
| Operating Temp.: | -20℃ To +70℃ |
| Life Time: | 40000 Hrs |
| Compliance: | REACH & RoHS Compliant |
Smart Home LCD 4 inch, Square TFT LCD 4″ Drawing
Interface Pin Definition
| Pin No. | Symbol | Description | When not in use | |||
| 1 | LEDA | B/L positive pin | — | |||
| 2 | LEDK | B/L negative pin | — | |||
| 3 | LEDK | B/L negative pin | — | |||
| 4 | GND | Ground | — | |||
| 5 | VCI | Power supply (2.8-3.3V) | — | |||
| 6 | IOVCC | I/O power supply (1.8-3.3V) | — | |||
| 7 | TE | Tearing effect output | Open | |||
| 8 | CS | Chip selection pin. Low-active. | — | |||
| 9 | RS | Display data/command selectionDCX=’ 1’ : display data or parameter.
DCX=’0’ : register index / command. |
— | |||
| 10 | WR/SCK | Write enable in MCU interface.In SPI mode, this pin is sck | — | |||
| 11 | RD | Read enable | GND | |||
| 12 | SDI | SPI interface input/output pin. | — | |||
| 13 | SDO | SPI interface output pin. | — | |||
| 14 | GND | Ground | — | |||
| 15-30 | D0-D15 | Horizontal sync input | GND | |||
| 31 | RESET | This signal will reset the device and it must be applied to properly initialize the chip | — | |||
| 32 | IM2 | IM0=0 | IM2=0 | MCU 16 BIT | D[ 15:0] is used | — |
| IM0= 1 | IM2=0 | MCU 8 BIT | D[7:0] is used | |||
| 33 | IM0 | IM0= 1 | IM2= 1 | 4Line SPI | CS,RS,SCK.SDI | — |
| IM0=0 | IM2= 1 | Reserve | – | |||
| 34 | GND | Ground | — | |||
| 35 | TP_INT | TP Interrupt to the host | Open | |||
| 36 | TP_SDA | TP I2C data input and output | Open | |||
| 37 | TP_SCL | TP I2C clock input | Open | |||
| 38 | TP_RES | TP external reset, Low is active | Open | |||
| 39 | TP_VCI | TP power supply (2.8-3.3V) | Open | |||
| 40 | GND | Ground | — | |||
Backlight Electrical Characteristics
| Item | Symbol | Min | Typical | Max. | Unit |
| LED module forward
Voltage |
VBÂ LEDB | 12-13.2 | V | ||
| LEDÂ module current | IB Â LEDB | 30 | 40 | 50 | mA |
| LCM Surface brightness
Luminanceâ–¼1 |
LB SB | —– | 300 | —- | Cd/mP 2P |
| LCM Surface brightness
uniformâ–¼2 |
LB  DBBB | —- | 80 | —- | % |
LCD Electrical characteristics
| parameter | Symbol | Condition | Min | Typ | Max | Unit | ||
|
Viewing Angle |
Φ=3 O’clock |
θ |
Cr＞10 |
75 | 85 |
deg |
||
| Φ= 6 O’clock | 75 | 85 | ||||||
| Φ=9 O’clock | 75 | 85 | ||||||
| Φ=12 O’clock | 75 | 85 | ||||||
| Contrast ratio | Cr | θ=0
Φ=0 |
800 | 1000 | ||||
| Respone time | Tr+Tf | — | 25 | — | ms | |||
| NTSC | % | 55 | 60 | |||||
| CIE(x,y)    chromaticty | WHITE | X | θ=0
Φ=0 |
Typ
-0.03 |
0.294 | Typ  +0.03 | ||
| Y | 0.329 | |||||||
| Â | ||||||||
Smart Home LCD 4 inch, Square TFT LCD 4″ Real Product ImageÂ
Reviews
There are no reviews yet.