FEDL9092-01 Datasheet, PDF(1/66 Page) List of Unclassifed Manufacturers

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FEDL9092-01 Datasheet, PDF (1/66 Pages) List of Unclassifed Manufacturers – LCD Driver with Key Scanner and RAM

LAPIS Semiconductor

ML9092-01/02/03/04

LCD Driver with Key Scanner and RAM

FEDL9092-01

Issue Date: Nov. 4, 2003

GENERAL DESCRIPTION

The ML9092-01/02/03/04 are LCD drivers that have 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 graphic display system of a maximum of 60 ï´ 10 dots (56 ï´ 10 dots for ML9092-01, 60 ï´ 10 dots for

ML9092-02/03/04). can be implemented.

The ML9092-01/02 do not require any power supply circuit to drive the LCD, because they have internal voltage

doublers. (If a large-sized panel is driven, use the ML9092-03, to which the LCD driving voltage is supplied

externally.)

The internal key scan circuit (5 ï´ 5 key scanning for ML9092-01/04, 6 ï´ 4 key scanning for ML9092-02/03) has

eliminated the needs of key scanning by the CPU, thereby enabling the efficient use of the CPU ports.

FEATURES

ï· Logic voltage

: 4.5 to 5.5 V

ï· LCD drive voltage

: 4.5 to 16.5 V (positive voltage)

ï· Segment output

: 56 outputs for ML9092-01; 60 outputs for ML9092-02/03/04

ï· Common output

: 10 outputs

ï· Built-in bit-mapped RAM : 60 ï´ 10 = 600 bits (for ML9092-01 only: 56 ï´ 10 = 560 bits for the RAM

display area)

ï· 4-pin serial interface with CPU: CS, CP, DI/O, KREQ

ï· Built-in LCD drive bias resistors

ï· Built-in voltage doubler circuit

ï· For the ML9092-01/04, the built-in 5 ï´ 5 key scanner makes it possible to read the status of 25 key switches and

1-channel rotary encoder. In addition, the ML9092-01/04 have an 8-bit, 3-channlel PWM circuit built in.

For the ML9092-02/03, the built-in 6 ï´ 4 key scanner makes it possible to read the status of 24 key switches and

1-channel rotary encoder.

ï· Port A output

: 1 pin, output current = â15 mA : Can be used for LED driving

ï· Port B output

: 3 pins, output current = â2 mA : Applies to ML9092-01/04 (capable of PWM

output)

ï· Port C output

: 5 pin, output current = â2 mA

: Applies to ML9092-01 only

ï· Port D output

: 5 pins, output current = â2 mA : Applies to ML9092-01 only

ï· Temperature range

: â40 to +85ï°C

ï· Package: 100-pin plastic TQFP (TQFP100-P-1414-0.50-K)

(Product name: ML9092-01TB, ML9092-02TB, ML9092-03TB, ML9092-04TB)

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