Datasheet > RA8806

RA8806

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
瑞佑 - RAIO		控制器
页数	文件大小	规格书
174页	4476K
描述
Two Layers Character/Graphic LCD Controller Specification

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数据手册

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RA8806 数据手册

RA8806

Preliminary Version 1.0

Two Layers Character/Graphic LCD Controller

4-4 LCD Driver Interface

Pin Name

I/O

Description

Start Signal of LCD Per Frame

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

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

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

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.

XCK

ZDOFF

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

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

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

LD[7:0]

RA8806T1N supports LD[3:0] only.

4-5 Power

Pin Name

VDDH

I/O

Description

5V Power

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

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.

VDD

Power for I/O Buffer

VDDP can be 3V or 5V.

Analog Power for ADC Touch Panel Controller

AVDD can be 3V or 5V.

VDDP

AVDD

GND

Ground

GNDP

Analog Ground for ADC Touch Panel Controller

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

AGND

Test Mode

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

floating.

Test Pin

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

floating.

TESTMD

TESTI

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