LT7680 TFT display driver library

The LT7680, LT7680A_R, and LT7680B-R display controllers are supported by the RAMTEX S6D0129 display driver library package.
Full GUI display driver C source code. Processor and C compiler independent.

LT7680 display controller characteristics

Below is a brief introduction to the main characteristics for the LT7680 RGB display controller (seen from a software driver design viewpoint).

For information about the LT7680 driver software support please go to the library description.

LT7680 device type

  • COG RGB color display controller for use in small embedded systems with on-chip frame buffer and TFT screen driver.
  • The LT7680 supports TFT screens with a size up to 1280 x 1024 pixels (WxH)
  • On-chip TFT driver with voltage generator

Frame buffer

  • RGB pixel resolution (bits per pixel): 8-bit, 16-bit, 24 bit.
  • LT7680 frame buffer organization: 1280 RGB pixels on scan line, 1024 lines.

Processor interfaces on LT7680

  • LT7680 parallel bus interface
    • Parallel bus types: 8080 bus type and 6800 bus type
    • Parallel bus size: 8-bit, 16-bit.
    • Addressing concept: Indexed bus interface (1 chip select pin + 1 address bit pin (Data/Command))
  • Serial bus interfaces on LT7680
    • SPI bus: 3-wire: /CS, SDIN, SCLK. SPI-3 SPI-4 is separate MOSI and MISO lines. Address is specified as first SPI byte.
    • I2C bus: 2-wire: SDIN, SCLK
    • In SPI bus mode the frame buffer memory can not be read.
  • The bus interfaces are all supported by the LT7680 display driver software package.

Special LT7680 hardware features:

  • Frame Buffer size set equal to Display size..
  • 0-180, 90-270 degree frame buffer rotation with hardware support. Portrait mode, landscape mode.
  • Full driver software support.

Display controller vendor

  • LEVETOP

Seeking a display controller equivalent to LT7680?

Check these:

LT7381 LT7681 LT7683 LT7686 RA8876 RA8877

These display controllers have similar internal configuration and graphic rendering features.
The differences are primarily related to display screen sizes or available bus interface types.