LD7138 OLED display driver library

The LD7138 display controller is supported by the RAMTEX S6D0129 display driver library package.
Full GUI display driver C source code. Processor and C compiler independent.

LD7138 display controller characteristics

Below is a brief introduction to the main characteristics for the LD7138 RGB display controller (seen from a software driver design viewpoint).

For information about the LD7138 driver software support please go to the library description.

LD7138 device type

• COG RGB color display controller for use in small embedded systems with on-chip frame buffer and OLED screen driver.
• The LD7138 supports OLED screens with a size up to 128 x 128 pixels (WxH)
• On-chip OLED driver with voltage generator and software controlled intensity regulation.

Frame buffer

• RGB pixel resolution (bits per pixel): 16-bit.
• LD7138 frame buffer organization: 128 RGB pixels on scan line, 128 lines.

Processor interfaces on LD7138

• LD7138 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 LD7138

  • SPI bus: 4-wire: /CS, DC, SDIN, SCLK.
  • I2C bus: 2-wire: SDIN, SCLK
• The bus interfaces are all supported by the LD7138 display driver software package.

Special LD7138 hardware features:

• 0-180, 90-270 degree frame buffer rotation with hardware support. Portrait mode, landscape mode.
• Software controlled intensity regulation.
• Full driver software support.

Display controller vendor

• SOLOMON SYSTECH Ltd. https://www.solomon-systech.com