MSM9006-02 Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Fabricante

MSM9006-02

LCD Driver with Keyscan Function

Oki Electric Industry 

¡ Semiconductor

MSM9006-01, -02

FUNCTIONAL DESCRIPTION

Pin Functional Description

• OSC

This is an input pin for the oscillator to generate LCD AC lighting and keyscan signals. Connect

external capacitor and resistor as shown below to form RC oscillation circuit.

The relationship between frame frequency fFRM, keyscan period TSCN, and oscillation frequency

fOSC is:

fFRM = fOSC/24, TSCN = 20/fOSC

(See REFERENCE DATA for information on the relationship between CO, RO values, frame

frequency, and keyscan periods.)

VDD

RO

OSC

CO

• DATA I/O

This is a serial data input/output. The pin is in output state for the duration from the first shift

clock rising after "Key Data Output" command is entered, to the load signal rising, and in input

state otherwise. (The pin is in input state after reset.)

The relationship between data level and operation is shown below.

Data Level

"H"

"L"

LCD and LED Display

ON

OFF

Port

"H"

"L"

Key Status

ON

OFF

• CLOCK

This is an input pin for the shift clock. DATA I/O pin data is either input or output in

synchronization with the rising of the clock.

• LOAD

This is a load signal input pin. It is used for transferring serial input data to a latch for display,

entering commands, or resetting the output state of the DATA I/O pin.

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