Products>LCD Driver for OA>ST7066U
16Cx40S Dot Matrix LCD Controller / Driver

Product Description

The ST7066U dot-matrix liquid crystal display controller and driver LSI displays alphanumeric, Japanese kana characters, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of a 4- or 8-bit microprocessor. Since all the functions such as display RAM, character generator, and liquid crystal driver, required for driving a dot-matrix liquid crystal display are internally provided on one chip, a minimal system can be interfaced with this controller/driver.
The ST7066U has pin function compatibility with the HD44780, KS0066 and SED1278 that allows the user to easily replace it with an ST7066U. The ST7066U character generator ROM is extended to generate 240 5x8(5x11) dot character fonts for a total of 240 different character fonts. The low power supply (2.7V to 5.5V) of the ST7066U is suitable for any portable battery-driven product requiring low power dissipation.
The ST7066U LCD driver consists of 16 common signal drivers and 40 segment signal drivers which can extend display size by cascading segment driver ST7065 or ST7063. The maximum display size can be either 80 characters in 1-line display or 40 characters in 2-line display. A single ST7066U can display up to one 8-character line or two 8-character lines

  • 5 x 8 and 5 x 11 dot matrix possible
  • Low power operation support:
    - 2.7 to 5.5V
  • Wide range of LCD driver power
    - 3.0 to 10V
  • Correspond to high speed MPU bus interface
    - 2 MHz (when VCC = 5V)
  • 4-bit or 8-bit MPU interface enabled
  • 80 x 8-bit display RAM (80 characters max.)
  • 13,200-bit character generator ROM for a total of 240 character fonts(5 x 8 dot or 5 x 11 dot)
  • 64 x 8-bit character generator RAM
    - 8 character fonts (5 x 8 dot)
    - 4 character fonts (5 x 11 dot)
  • 16-common x 40-segment liquid crystal display driver
  • Programmable duty cycles
    - 1/8 for one line of 5 x 8 dots with cursor
    - 1/11 for one line of 5 x 11 dots & cursor
    - 1/16 for two lines of 5 x 8 dots & cursor
  • Wide range of instruction functions:
    Display clear, cursor home, display on/off,    cursor on/off, display character blink, cursor shift, display shift
  • Pin function compatibility with HD44780, KS0066 and SED1278
  • Automatic reset circuit that initializes the controller/driver after power on
  • Internal oscillator with external resistors
  • Low power consumption
    QFP80 and Bare Chip available