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

X’tal Input

In internal clock mode, this pin connects to external X’tal(32768Hz).

In external clock mode, this is an input of external clock.

X’tal Output

This pin connects to external X’tal(32768Hz).

4.4 Peripheral Interface

Pin Name

I/O

Description

Reset Signal

RST#

This is a reset signal used to reset RA8803/8822. Active low.

Touch Panel Input

This is connecting to the left pin of 4-wire touch panel.

Touch Panel Input

This is connecting to the right pin of 4-wire touch panel.

Touch Panel Input

This is connecting to the top pin of 4-wire touch panel.

Touch Panel Input

This is connecting to the bottom pin of 4-wire touch panel.

DAC Current Output

IOUT

DAC current source output used to contrast voltage control. This pin is tri-

state when DAC disbale.

Key Pad Input

KR[7..0]

KC[7.0]

These pins are keypad inputs.

Key Pad Output

These pins are keypad outputs.

Clock Output

CLK_OUT

SYS_NM

This is system clock output pin.

Test Pin

This is a test pin. Normally it has to connect high.

System Clock Select

This pin is used to select clock source.

Pull Low (0): X’tal/PLL Mode.

Pull High(1) : External Clock.

SYS_FQ

When SYS_FQ is Pull Low, then Internal oscillator and PLL are enable,

only one external 32Khz X’tal need.

When SYS_FQ is Pull High, then the system clock is from external pin

“XA”.

LCD Driver Data Bus Select

SYS_DW

This pin is used to select data bus of LCD driver is 8-Bit or 4-Bit:

Pull Low(0) : 4-Bit

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