RA8806-T 查看數據表（PDF） - RAIO

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RA8806-T

Two Layers Character/Graphic LCD Controller Specification

RAIO 

Preliminary Version 1.0

RA8806

Two Layers Character/Graphic LCD Controller

4-4 LCD Driver Interface

Pin Name

YD

FR

LP

XCK

ZDOFF

LD[7:0]

I/O

Description

Start Signal of LCD Per Frame

O YD is the reset pulse for the COM driver, it’s active during the last COM

period of each frame and latched by LP signal.

LCD AC Wave Output

O This signal controls the Level Shift of LCD driver. Normally it works as

VDD/GND interlacing to prevent the liquid cystal polarization.

LCD Common Latch

O LP is the latch pulse for the shift register of SEG driver to SEG output. It is

also used as COM driver shift clock.

LCD Clock

O

XCK is the latch pulse of the LCD driver data(LD[7:0]) for SEG driver. The

falling edge of XCK will latch the LD[7:0] (or LD[3:0] for 4-bits driver) to the

shift register.

LCD Display Off

This signal is used to control the LCD Display On or Off.

O 0 : Display off.

1 : Display on.

LCD Driver Data Bus

When 8-bits LCD driver IC is used. LD[7:0] are connected to LCD driver

O data bus. When 4-bits driver is used, LD[3:0] are connected to LCD driver

data bus and LD[7:4] keep floating.

RA8806T1N supports LD[3:0] only.

4-5 Power

Pin Name

VDDH

VDD

VDDP

AVDD

GND

GNDP

AGND

TESTMD

TESTI

I/O

Description

5V Power

P This is the source power for DC to DC converter. In 5V power application,

it is connected to 5V. If 3V application is used, then keep this pin floating.

3V Power

P

If the pin VDDH connects to 5V power then the pin will driving 3V power,

and must add an external 1uF capacitor to GND. If 3V application is used,

then connecting this pin to external 3V power directly.

Power for I/O Buffer

P

VDDP can be 3V or 5V.

Analog Power for ADC Touch Panel Controller

P

AVDD can be 3V or 5V.

P Ground

Analog Ground for ADC Touch Panel Controller

P

Connect this pin to 0V earth ground(GND).

Test Mode

I

This pin is used for test only. It has internal pull-low and need to keep

floating.

Test Pin

I

The pin is used for test function, It has internal pull-low and need to keep

floating.

RAiO TECHNOLOGY INC.

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www.raio.com.tw

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