ML9090-01

• 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 ML9090- 02
• 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
15mA : 3 pins
• Temperature range: 40 to +85°C
• Package: 128-pin plastic QFP (QFP128-P-1420-0.50-K) (Product name: ML9090-01GA) (Product name: ML9090-02GA)

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 of ML9090-01 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 of 80 × 16 dots (80 × 8 dots for the ML9090-01, 80 × 16 dots for the ML9090-02) and an arbitrator display system of 80 × 2 dots.

Since containing voltage multipliers, the ML9090-01 and ML9090-02 require no power supply circuit to drive the LCD.

Since the internal 5 × 5 scan circuit has eliminated the needs of key scanning by the CPU, the ports of the CPU can be efficiently used.