GENERAL DESCRIPTION

The ML9090A-01 and ML9090A-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 data 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 of 80 × 18 dots (80 × 10 dots for the ML9090A-01, 80 × 18 dots for the ML9090A-02).

FEATURES

? Logic voltage: 2.7 to 5.5 V

? LCD drive voltage: 6 to 16 V (positive voltage)

? 80 segment outputs, 10 common outputs for ML9090A-01 and 18 common outputs for ML9090A-02

? Built-in bit-mapped RAM (ML9090A-01: 80 × 10 = 800 bits, ML9090A-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 or tripler circuit

? Built-in 5 × 5 key scanner

? Port A output : 1 pin, output current: –15 mA: (may be used for LED driving)

? Port B output : 8 pins

Output current (available for the ML9090A-01 only)

–2 mA : 5 pins

–15 mA : 3 pins

? Temperature range: –40 to +85°C

? Package: 128-pin plastic QFP (QFP128-P-1420-0.50-K)

(Product name: ML9090A-01GA)

(Product name: ML9090A-02GA)