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RA8802

Character/Graphic LCD-Controller Specification

RAIO 

Version 1.1

RA8802/8820

Character/Graphic LCD Controller

The RA, RB are used for RC-Oscillator mode.

If in X’tal/PLL mode then RA and RB should be Floating.

RB

I

Connect Resistance.

4.4 Power Signal

Pin Name I/O

VDD

I

GND

I

AVDD

I

AGND

I

Power supply

Power ground

Analog power supply signal.

Analog ground.

Description

4.5 Misc. Signal

Pin Name I/O

RST#

I

X1

I

X2

I

Y1

I

Y2

I

Iout

O

Vref

O

MA[19..0]

O

MCS#

O

MD[7..0]

I

SEL0

I

SEL1

I

Description

Active low reset signal. (The reset pulse do not less than 100mS after

MCU stable)

Normally connected to touch panel Left pin XL.

Normally connected to touch panel Right pin XR.

Normally connected to touch panel Top pin YU.

Normally connected to touch panel Bottom pin YD.

DAC current source output used to contrast voltage control.

ADC voltage reference signal.

20-bit Address Bus connected to the address bus of external character

pattern ROM.

Note: MA0 need to be Pulled High (10K)

If do not use the external Font ROM, the MA[7:0] should tied to VDD to

reduce the power consumption.

Character pattern ROM chip select and output enable

8-bit Data Bus connected to the data bus of external character pattern

ROM.

Note: If do not use the external Font ROM, the MD[7:0] should tied to

VDD to reduce the power consumption.

Test pin must be tied to GND for normal use.

Test pin must be tied to VDD for normal use.

RAiO TECHNOLOGY INC.

6/7

www.raio.com.tw

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