Datasheet > RA8803

RA8803

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
8页	105K
描述
Two Layers Text/Graphic LCD Controller Specification

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数据手册

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RA8803 数据手册

RA8803/8822

Version 2.1

Two Layers Character/Graphical LCD Controller

Pull High(1) : 8-Bit

When SYS_DW is Pull Low, then the LCD driver data bus Is 4-Bit.

When SYS_DW is Pull High, then the LCD driver data bus is 8-Bit.

MPU Type Select

This pin is used to select MPU type:

Pull Low(0) : I8080 Series

Pull High(1) : M6800 Series

SYS_MI

When SYS_MI is Pull Low, then the MPU Interface of RA8803/8822 is

suppported I8080.

When SYS_MI is Pull High, then the MPU Interface of RA8803/8822 is

supported M6800.

8080 MPU Data Bus Select

This pin is used to select data bus of 8080 MPU is 4-Bitor 8-Bit:

Pull Low(0) : 4-Bit

Pull High(1) : 8-Bit

SYS_DB

When SYS_DB is Pull Low, then the 8080 MPU Interface of RA8803/8822

is supported 4-Bit.

When SYS_DB is Pull High, then the 8080 MPU Interface of RA8803/8822

is supported 4-Bit.

Operation Status of Current Command

These two pins are the feedback from RA8803/8822 while MPU release a

Read or Write command to RA8803/8822. The MPU could know the status

of RA8803/8822.

OPM0

OPM1

State

OPM0

OPM1

MPU is reading data from RA8803/8822.

MPU is writing data to RA8803/8822.

RA8803/8822 did not receive command or read

a valid commend.

Normally the system does not need to use these two pins. And keep

floating for not use.

4.5 Power

Pin Name

I/O

Description

5V Power

This is the input of 5V to 3.3V DC to DC Converter. If it connects to 5V

power then the pin VDD3 will generate 3.3V power for internal cells and

external device.

VDD5

3.3V Power

VDD3

I/O

If the pin VDD5 connects to 5V power then this pin will generate 3.3V

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