2.8 inch tft lcd display screen
►Resolution : 240×320 dots
►View Direction: 12 o’clock
►Interface: MCU
►Driver IC: ST7789V
►RTP/CTP: Optional
►Brightness(cd/m²): 380
►Outline Dimension: 50.00 * 69.20 * 2.45(mm)
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DESCRIPTION
K280I4005 is a 2.8 inch TFT module with optional resistive touch screen and capacitive touch screen control with a resolution of 240×320 pixels. This size TFT LCD monitor is portrait mode with wider viewing angle by POL adjustment, left: 45/right: 45/up: 50/down: 20 degrees (typical).Optional RTP or CTP.
This K280I4005 module has built-in ST7789V controller IC, supports MCU interface, the power supply voltage (VCC) range is 3.0V to 3.6V, the brightness is 380 nits (typ), and the contrast ratio is 800:1. This module is instrumentation, handheld Industrial ideal for equipment, etc. The module can operate from -20°C to +70°C; its storage temperature range is -30°C to +80°C
DRAWING
SPECIFICATIONS
General Specifications
| Item | Contents | Unit |
| Size | 2.8 | inch |
| LCM Dimension | 50.00（W）* 69.20（H） * 2.45(T) | mm |
| LCD Active Area | 43.20* 57.60 | mm |
| Number Of Dots | 240×320 | pixel |
| LCD Type | a-Si TFT | |
| Viewing Direction | 12 o’clock | |
| Driver IC | ST7789V | |
| Interface Type | MCU | |
| Operating Temperature | -20℃~ 70℃ | |
| Storage Temperature | -30℃~ 80℃ | |
| Backlight Type | 4 LEDs | |
| Brightness | 380 | Cd/m2 |
Interface
LCM PIN Definition
| NO. | Symbol | Description |
| 1 | NC | NC |
| 2 | IOVCC | I/O POWER SUPPLY |
| 3-12 | GND | Ground |
| 13-20 | DB7-DB0 | Data Bus |
| 21-25 | NC | NC |
| 26 | RD | Read signal, rising-edge-active. |
| 27 | WR | Write signal, rising-edge-trigger. |
| 28 | RS | Data/Command register address. |
| 29 | CS | Chip enable, Low-active. |
| 30 | RESET | Reset pin |
| 31-35 | NC | NC |
| 36 | GND | Ground |
| 37 | VCI | POWER SUPPLY |
| 38 | NC | NC |
| 39 | LEDA | BACKLIGHT ANODE |
| 40 | LEDK | BACKLIGHT CATHODE |
DC Characteristics
| Item | Symbol | Min | Typ | Max | Unit |
| TFT gate on voltage | VGH | — | 15 | — | V |
| TFT gate off voltage | VGL | — | -10 | — | V |
| TFT common electrode Voltage | Vcom | — | -1 | — | V |
Typical Operation Conditions
| Item | Symbol | Min. | Typ. | Max. | Unit |
| Analog Supply Voltage | VCI | 2.5 | 2.8 | 3.3 | V |
| Digital Supply Voltage | VDD | 2.5 | 2.8 | 3.3 | V |
| I/O Supply Voltage | IOVCC | 1.65 | 1.8/2.8 | 3.3 | V |
| Input High Voltage | VIH | 0.8*IOVCC | – | IOVCC | V |
| Input Low Voltage | VIL | 0 | – | 0.2*IOVCC | V |
| Output High Voltage | VOH | 0.8*IOVCC | – | – | V |
| Output Low Voltage | VOL | – | – | 0.2*IOVCC | V |
Backlight Circuit Characteristics
| Item | Symbol | Min. | Typ. | Max. | Unit |
| LED Current | IB | — | 60 | 80 | mA |
| LED Voltage | Vf | 2.8 | 3.0 | 3.2 | V |
| CIE | X | 0.25 | 0.30 | 0.35 | |
| Y | 0.26 | 0.31 | 0.36 | ||
| Brightness of LCM | L | — | 380 | — | cd/m2 |
Reliability Test Items
| Test Item | Test Condition | Test result determinant gist |
| High temperature storage | 80±3 ℃，48H； | |
| Low temperature storage | ~30±3 ℃，48H； | |
| High temperature storage | 70±3 ℃，48H； | Inspection after 2~4hours storage at roomtemperature, |
| Low temperature operation | ~20±3 ℃，48H； | the sample shall be free from defects: |
| High temperaturehumi/dity | 60℃±3 ℃,90%±3%RH ，48H； | 1.Air bubble in the LCD; |
| Thermal Shock | ~20℃/0.5h~+70℃/0.5h for a total 24 cycles； |
2.Non-display; |
|
Vibration Test |
Frequency 10Hz~55Hz~10Hz | 3.Glass crack; |
| Amplitude：1.5mm, X，Y，Z | ||
| direction for total 1H； | 4. The electrical | |
| (Packing condition) | ||
|
ESD test |
±4KV, Human Body Mode, | characteristics requirements shall be satisfied. |
| 150pF/330Ω； | ||
| ±8KV, Air Mode, 150pF/330Ω； |
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