ML9090-02 - OKI electronic componets

ML9090-02 LCD Driver with Key Scanner and RAM

The ML9090-01 and ML9090-02 are LCD drivers that contain internal RAM and a key scan function. They are best suited for car audio displays. Since 1-bit data of the display RAM corresponds to the light-on or light-off of 1-dot of the LCD panel (a bit map system), a flexible display is possible. A single chip can implement a graphic display system of a maximum.

Features

• Logic voltage: VDD 2.7 to 5.5 V
• LCD drive voltage: VBI 6 to 16 V (positive voltage)
• 80 segment outputs,10 common outputs for ML9090-01 and 18 common outputs for ML909002
• Built-in bit-mapped RAM (ML9090-01: 80 ¥ 10 = 800 bits, ML9090-02: 80 ¥ 18 = 1440 bits)
• 4-pin serial interface with CPU: CS, CP, DI/O, KREQ
• Built-in LCD drive bias resistors
• Built-in voltage doubler and tripler circuits
• Built-in 5 ¥ 5 key scanner
• Port A output : 1 pin, output current: -15mA: (may be used for LED driving)
• Port B output : 8 pins Output current (available for the ML9090-01 only)
  –2mA : 5 pins .