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

4-3 Peripheral Interface

Pin Name

I/O

Description

Reset Signal Input

This active-low input performs a hardware reset on the RA8806. It is a

Schmitt-trigger input with pull-up resistor for enhanced noise immunity;

however, care should be taken to ensure that it is not triggered if the

supply voltage is lowered.

ZRST

Touch Panel Input

The left analog input pin(XL) of 4-wires touch panel.

Touch Panel Input

The right analog input pin(XR) of 4-wires touch panel.

Touch Panel Input

The top analog input pin(YU) of 4-wires touch panel.

If user want to use Touch Panel function, please add a 39K~51Kohm

external pull-up resistor on this pin.

Touch Panel Input

The bottom analog input pin(YD) of 4-wires touch panel.

PWM Output Signal

This output signal is used to control back-light module or booster circuit.

PWM_OUT

Key Pad Input

These pins are keypad inputs with pull-up resistors. For un-used input,

please keep floating.

KIN[7:0]

Key Pad Output

KOUT[7:0]

These pins are keypad outputs. For un-used pin, please keep floating.

Clock Output

This is a multi-function output pin that depending on the value of register

REG[01h] Bit-6.

REG[01h] Bit-6 = 0: The pin is the output of internal system clock.

REG[01h] Bit-6 = 1: The pin indicate the SLEEP state of Status

CLK_OUT

LCD Driver Data Bus Select

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

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

1 : LCD driver data bus is 8-bits, LD[7:0] is used.

When 4-bits data bus is used, LD[7:4] need to keep floating. RA8806T1N

does not support this function, its LCD driver data bus is fix 4-bits.

MPU Type Select

This pin is used to select MPU interface protocol:

0 : Intel 8080 series MPU interface.

1 : Motorola 6800 series MPU interface.

8080/6800 MPU Data Bus Select

This pin is used to select data bus width.

0 : 4-bits MPU I/F, DATA[3:0] is used.

1 : 8-bits MPU I/F, DATA[7:0] is used.

When 4-bits data bus is used, DATA[7:4] need to keep floating.

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