Atom Display-Lite

SKU:K115-B

Description

Atom Display-Lite is a low-cost display driver that uses FPGA to simulate traditional SPI TFT-LCD data output, supporting a maximum image output of 720P (1280 x 720). It achieves widely compatible display output through a dedicated RGB-to-HDMI signal chip. Embedded with an ESP32 controller, it integrates 2.4G Wi-Fi and includes a 4MB Flash + 520KB SRAM memory combination. Atom Display-Lite can replace traditional display panel PC control solutions, offering a more cost-effective alternative.

Features

FPGA and driver library code are open-source
Utilizes FPGA (Gowin GW1NR-9C)
Built-in LT8618SX RGB-to-HDMI signal chip (supports 24-bit color depth)
SPI interface (FPGA) + I2C interface (LT8618SX)
Maximum image output of 720P (1280x720)
Multiple output modes, optimized frame rate up to 12 ~ 16 FPS
Built-in Atom-Lite (ESP32-PICO-D4) controller
Programmable RGB light x1, reset button x1, button x1, full-featured Grove expansion interface x1
Development platforms: Arduino, ESP32-IDF (UiFlow not yet supported)

Includes

1 x Atom-Lite
1 x Atomic Display Base

Applications

Display input signal source
High-definition data dashboard

Specifications

Specification	Parameter
ESP32-PICO-D4	240MHz dual core, 600 DMIPS, 520KB SRAM, Wi-Fi
FPGA	Gowin GW1NR-9C
LT8618SX	RGB-to-HDMI signal chip, supports 24-bit color depth
Maximum image output size	720P (1280x720)
Output frame rate	1280x720 60Hz
Product Size	64 x 24 x 29mm
Product weight	21.0g
Package Size	76 x 46 x 29mm
Gross weight	34.0g

Learn

Display Compatibility

Atom Display Lite requires a display with adaptive resolution scaling functionality. On some displays that do not support adaptive resolution, display anomalies may occur.

Schematics

PinMap

PIN	LEFT	RIGHT	PIN
3V3		1
SPI_CLK	2	3
CS	4	5	5V
SPI_MISO	6	7	GND
SPI_MOSI	8	9

BUTTON & RGB LED

Atom	G39	G27
BUTTON	SIGNAL	/
RGB LED	/	SK_DIN

LT8618SX

Atom	G25	G21	5V	GND
LT8618SX	LT_CSDA	LT_CSCL	VIN	GND

Softwares

Arduino

M5GFX Library

Programming Environment Setup Tutorial

Click here to view the M5Atom Arduino environment setup tutorial
Before using the example programs in the M5GFX library, you need to change the included header file to match the device you are using. As shown in the example below, include #include <M5AtomDisplay.h> and create an instance M5AtomDisplay display;

#include <Arduino.h>
#include <vector>

#include <M5AtomDisplay.h>
M5AtomDisplay display;

void setup(void)
{
  display.begin();
}

void loop(void)
{
  display.fillScreen(RED);
  delay(1000);
  display.fillScreen(GREEN);
  delay(1000);
  display.fillScreen(BLUE);
  delay(1000);
} 

Other

Atom Display FPGA Design

Product Comparison

Product	MCU	Flash	RAM	IO PINS
Atom Display Lite	Atom-Lite (ESP32-PICO-D4)	4MB	520KB SRAM	G22,G19,G23,G33,G26,G32,G25,G21
Atom Display PSRAM	Atom PSRAM (ESP32-PICO-V3-02)	8MB	520KB SRAM + 2MB PSRAM	G22,G19,G5,G33,G26,G32,G25,G21