RenesasSP

262,144–Color, 320x480-Dot Graphics LCD Controller Driver for a-Si TFT Panel.

Description (from datasheet)

The R61581 is liquid crystal controller driver LSI with internal frame memory for a-Si TFT panel sized 320RGB x 480-dot at the maximum. The driver supports MIPI DBI Type B (18/16/9/8 bits) and Type C (Options 1 and 3) as system interface to microcomputer as well as high-speed frame memory write function, enabling efficient data transfer. The R61581 supports a MDDI client as a differential small-amplitude high-speed direct interface to the MDDI host. The MDDI and the system interface are selected by setting IM[2:0] pins.

The R61581 is also compliant with MIPI1 DPI2 (VSYNC, HSYNC, PCLK, DE, and DB[17:0]3) for video image display.

The R61581 incorporates step-up and voltage follower circuits to generate drive voltage required for a-Si TFT panel and dynamic backlight control function to control backlight brightness depending on image data reducing power consumption at the backlight with a slightest influence on the display quality.

Other features include 8-color display and power management functions, making the driver best suitable for small or mid-sized portable devices such as digital mobile phones, small Pads and mobile TV devices.

Note

The MDDI supported by the R61581 is designed and produced based on the licensing of technology from Qualcomm. The MDDI must be adopted in the module, which incorporates a Qualcomm’s CDMA ASIC. Any claims, including, but not limited to the third party’s right to use the MDDI for industrial purposes shall not be accepted by Renesas Technology unless the above-mentioned condition is met.

Features (from datasheet)

  • Single chip driver for 262,144-color TFT 320RGB x 480-dot graphics (with internal gate and power supply circuits)
  • Command set (Compliant with MIPI DCS4 Version 1.01.00)
  • System interface
    • MIPI-DBI (Compliant with MIPI DBI Version 2.00)
      Type B 18/16/9/8 bits, 24 bits (dither)
      Type C 4-line 9-bit (Option 1), 8-bit (Option 3)
  • Video image display interface5
    • TE-I/F (MIPI DBI + TE synchronization signal output)
    • VSYNC I/F (MIPI DBI + VSYNC)
    • MIPI DPI (Compliant with MIPI DPI-2 Version 2.00)
    • MDDI (Compliant with Version 1.00)
  • Abundant color display and drawing functions
    • 262,144-color display
    • Partial display function
  • Low-power consumption architecture (allowing direct input of interface I/O power supply)
    • Deep standby mode
    • 8-color mode (Idle Mode)
    • Input power supply voltage:
      Interface I/O and logic power supply: IOVCC1
      MDDI: IOVCC2
      Liquid crystal analog circuit power supply: VCI
  • Dynamic backlight control function
  • Internal liquid crystal drive power supply circuit
    • Liquid crystal drive (source driver/VCOM): DDVDH, VREG, VCL
    • Gate drive: VGH, VGL
    • VCOM drive (common VCOM method): VCOMH, VCOML
  • TFT display storage capacitance: Cst (common VCOM method)
  • Internal frame memory: 345,600 bytes
  • Liquid crystal display drive circuits: 960 source signal lines and 480 gate signal lines
  • One-chip solution for COG module with the arrangement of gate circuits on both sides of the glass substrate
  • RGB common gamma correction function
  • Internal NVM (32 bits for user identification code, 7 bits for VCOM adjustment, and 5 bits for VDV):
    Rewriting data is guaranteed up to 5 times.
  • Dummy pins used to fix pin to VCC or GND6

See datasheet: R61581.pdf

  1. Mobile Industrial Processor Interface ↩

  2. Display Pixel Interface ↩

  3. Display Bus Interface ↩

  4. Display Command Set ↩

  5. Japanese Patent No.3,826,159
    Korean Patent No.747, 636
    United States Patent No. 7,176,870 ↩

  6. Japanese Patent No. 3,980,066
    Korean Patent No. 401,270
    Taiwan Patent No. 175,413
    United States Patent No. 6,323,930
    Japanese Patent No. 4,226,627
    United States Patent No. 6,924,868 ↩