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  TFT LCD Controller
  ● LT7680
  ● LT7681/3/6
  ● LT7381
  Serial/Uart Port TFT Controller
  ● LT268x
  ● LT7688
  ● LT7689
  ● Serial TFT Panel Solution
  32Bit MCU
  ● LT32A01
  ● LT32U02/32A02
  BLE 4.0 + 32Bit MCU
  ● LT5926
  ● LT5928
  Low Power Capacitive Touch Key Controller
  ● LT6101
  Capacitive Touch Screen Controller (60ch)
  ● LT2305

General Description:

LT7688 is a high-efficient graphic acceleration display controller. It integrated Levetop's 32Bit MCU - LT32U02 and the core structure of TFT Graphic Accelerator - LT768. Its main function is to provide UART, USB communication, enable system's MUC to send TFT screen displaying content to TFT driver via simple command. The chip support graphic acceleration, PIP, Geometric Drawing, and promote TFT display efficiency, and reduce the upper MCU processing time on graphic, it support 16/18bits RGB type TFT Panel from 320*240(QVGA) to 1280*1024 (SVGA).

The maximum of main frequency of LT7688 internal MCU is 72MHz, includes 64Kbytes Flash and 8Kbytes SRAM. Beside provides UART and USB serial communication, it also provides some analog input AIN, PWM and INT interrupt interfaces. These interfaces can also be set as general purpose IO interfaces. In order to achieve multi-layer, high resolution display effect,LT7680 has 128Mb built-in display memory to support 1bit/pixel to 18bit(262K)/pixel color display. It also owns built-in geometric drawing engine to support point drawing, line drawing, curve drawing, ellipse, triangle, rectangle, rounded rectangle drawing and so on. In addition, the chip has embedded hardware graphics processing unit to provide mandatory graphical operations like magic rotation, flip, reflect, PIP(picture in picture) , hybrid graphics and transparent display. If work with Levetop's TFT module develop software will have better efficiency, and no need to upgrade MCU for TFT screen. The powerful performance of LT7688 is suitable for embedded systems with TFT-LCD display, such as home appliances, industrial control, electronic instruments, medical equipment, human-machine interface, industrial equipment, testing equipment, etc.


•  Built-in 32Bit MCU、64KB Flash、8KB SRAM
•  Support Uart、USB2.0 Interface
•  Provide Drawing Line, Rectangle, Triangle, Polygon, Poly-Line, Circle, Ellipse, Arc, Rounded-Rectangle and Circle-Rectangle
•  Support UI_Editor and UartTool of Levetop’s Uart TFT Module Develop Tools
•  Embedded 2D Graphics Engine, support Rotate, Mirror, PIP(Picture-in-Picture) and Alpha-Blending
•  Embedded 128Mb Display RAM
•  Support Text and Graphics Cursor

•  Support Half Size & Full Size for 8*16~72*72
•  Support SPI Master I/F for External SPI Flash
•  Support up to 1280*1024 18bit RGB TFT Panel
•  Embedded MCU Provide I2C I/F
•  Support Interrupts, GPIO and PWM I/F
•  Embedded Comparator, 2 Channel ADC I/F
•  Embedded Clock Source
•  Working Voltage: 3.0V~3.6V
•  Package: 80pin QFN
Block Diagram: Application:

Product Information Archive:

•  LT7688_DM     
•  LT7688 Uart TFT Module Solution     

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