If you're an R&D engineer, buyer, or product designer working on industrial equipment, embedded terminals, or compact smart control devices, this 2.8″ small‑form‑factor COF display may be exactly what you need 👇
✅ Core Specifications
|
Item |
Specification |
|---|---|
|
Screen Size |
2.8″ TFT LCD, 240 × 320 resolution, 65,536 colors |
|
Brightness |
250 cd/m², LED backlight (non‑dimmable, lifespan 20,000 hrs) |
|
Power Supply |
Single 3.3V input, maximum power consumption 1W |
|
Form Factor |
COF structure, thickness 3.45mm (with TP), dimensions 50 × 69.2mm, FPC 0.5mm 50‑pin connector |
|
Storage |
On‑chip 2MB SPI Flash + off‑chip 8MB SPI Flash, auto data save within 3 seconds of power loss |
Fast Development, Minimal Effort
🔧 Ready‑to‑Use Development Tools
Comes with HMILite Configuration Software - no need to write UI code from scratch:
- Rich widget library: switches, numeric displays, trend charts, alarm pop‑ups, QR codes, gauges, and more - simply drag, drop, and combine
- Powerful extensions: C‑language macro commands for complex logic; supports Mitsubishi, Siemens, Omron, Delta, Modbus, and custom protocols
- Faster debugging: offline simulation for UI validation, online simulation for live device testing, plus customizable boot logos, multi‑language support, and user permission management
⚡ Sufficient Communication Interfaces
Standard onboard interfaces:
- 1 × TTL UART (UART2, primary communication port)
- 1 × CAN bus (CAN1)
Additional reserved interfaces: UART1 (debug port), UART3/4, CAN2, RTC, buzzer, SD card, I²C, ADC, and multiple GPIOs - ready for flexible expansion.
Industrial‑Grade Reliability for Harsh Environments
All models undergo formal reliability testing to ensure stable performance on‑site:
|
Test Item |
Performance |
|---|---|
|
ESD Immunity |
Contact ±8kV / Air ±8kV, no reboot or display distortion |
|
Electrical Fast Transient (EFT) |
±4kV, no abnormalities |
|
Operating Temperature |
–20℃ ~ +70℃, stable under alternating high/low temps |
|
Environmental Resistance |
10%–90% non‑condensing humidity, 10–25Hz vibration resistance |
Common Problem
What is the biggest difference between this display and a standard TFT module?
It uses a COF (Chip‑on‑Flex) structure, only 3.45mm thick, with no need for an extra driver board. You can connect it directly to your main controller via the FPC cable, making it ideal for space‑constrained embedded devices and greatly simplifying overall system assembly.
Can I add an external touch panel to the non‑touch model (N version)?
Yes. All models reserve capacitive touch interfaces (I²C protocol + interrupt/reset pins). The ASTG028W023‑L240X320N‑COF supports third‑party capacitive touch modules, and the software can be configured accordingly.
Do I have to use your proprietary software to develop the UI? Is it difficult to learn?
We recommend using the official HMILite Configuration Software (free of charge). No low‑level driver coding is required-its drag‑and‑drop widgets allow you to build interfaces quickly. It also supports offline simulation, so beginners can usually complete a basic UI in just 1–2 days. Complex logic can be implemented via C‑language macro commands.
Do I need an additional converter board to communicate with MCUs or PLCs?
No. The display comes with one TTL UART (UART2) and one CAN bus (CAN1) onboard, with voltage levels directly compatible with mainstream MCUs and PLCs. Simply wire according to the pin definition, select the corresponding protocol (such as Modbus RTU or a custom protocol) in the software, and you're ready to go.
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