Nextion Enhanced 3.5-Inch Resistive HMI Touchscreen Display (NX4832K035)
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Description
The Nextion Enhanced NX4832K035 is a 3.5-inch resistive Human Machine Interface (HMI) touchscreen module designed for intuitive visual control in embedded systems. It enables makers, students, and electronics enthusiasts to build custom graphical user interfaces for IoT devices and automation projects using the Nextion Editor software. With built-in real-time clock support, expanded memory, and extended GPIOs, it offers a powerful alternative to traditional character displays.
Enhanced hardware and memory
This Enhanced series unit is equipped with 32 MB of flash storage for fonts and images, 8192 bytes of RAM, and 1024 bytes of user EEPROM. It also features a built-in real-time clock powered by a CR1220 coin battery to retain accurate time data independently.
Clear touch interface
The 480x320 resolution screen displays up to 64K colours with adjustable backlight brightness up to 180 nit. Its resistive touch surface is rated for over one million touches, providing dependable tactile input for workshop and laboratory projects.
Serial connection and extended I/O
Communication is handled via a standard 4-pin 2.54 mm TTL serial connection supporting baud rates from 2400 up to 115200 bps. The board includes eight extended digital GPIO pins for inputs, outputs, and component binding events, with PWM supported on pins IO4 to IO7.
Specifications
| Color | 64K 65536 colors 16 bit 565, 5R-6G-5B |
| Layout size | 100.5(L)×54.94(W)×5.45(H) |
| Visual Area (V.A.) | 85.50mm(L)×54.94mm(W) |
| Active Area (A.A.) | 73.44mm(L)×48.96mm(W) |
| Resolution | 480×320 pixel Also can be set as 320×480 |
| Touch type | Resistive |
| Touches | > 1 million |
| Backlight | LED |
| Backlight lifetime (Average) | >30,000 Hours |
| Brightness | 180 nit 0% to 100%, the interval of adjustment is 1% |
| Weight | 48.2g |
| Operating Voltage | 4.75 5 7 V |
| Operating Current | VCC=+5V, Brightness is 100% – 145 – mA |
| SLEEP Mode | 15 – mA |
| Power supply recommend： 5V, 500mA, DC Working Environment & Reliability Parameter | Test Conditions Min Typical Max Unit |
| Working Temperature | 5V, Humidity 60% -20 25 70 °C |
| Storage Temperature | 30 25 85 °C |
| Working Humidity | 25°C 10% 60% 90% RH |
| Serial Port Baudrate | Standard 2400 9600 115200 bps |
| Output High Voltage | IOH=-1mA 3.0 3.2 V |
| Output Low Voltage | IOL=1mA 0.1 0.2 V |
| Input High Voltage | 2.0 3.3 5.0 V |
| Input Low Voltage | 0.7 0.0 1.3 V |
| Serial Port Mode | TTL |
| Serial Port | 4Pin_2.54mm |
| USB interface | NO |
| SD card socket | Yes (FAT32 format), support maximum 32G Micro SD Card * microSD card socket is exclusively used to upgrade Nextion firmware HMI design |
| Extended IO | 8 Digital extended GPIO |
| IO0-IO7 support input, output and component binding event * IO pin ports are not exclusive, limit current draw to 1mA recommended IO4-IO7 support PWM RTC | built-in RTC support (Battery type: CR1220) |
| Memory Type | Test Conditions Min Typical Max Unit |
| FLASH Memory | Store fonts and images 32 MB |
| User Storage | EEPROM 1024 BYTE |
| RAM Memory | Store variables 8192 BYTE |
| Instruction Buffer | Instruction Buffer 1024 BYTE |
| Display Resolution | 480 x 320 pixels |
| Colour Depth | 64K (65536 colours, 16-bit 565) |
| RAM | 8192 BYTE |
| EEPROM | 1024 BYTE |
| Sleep Mode Current | 15 mA |
| Recommended Power Supply | 5V, 500mA, DC |
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