ra8802 RAIO Technology Inc., ra8802 Datasheet - Page 9

• Manufacturer Part Number: ra8802
• Description: Character/graphic Lcd Controller
• Manufacturer: RAIO Technology Inc.

Version 1.3
RAiO
4.4 Power Signal
4.5 Misc. Signal
TECHNOLOGY INC.
Pin name
Pin name
MA[19..0]
MD[7..0]
AGND
MCS#
AVDD
RST#
SEL0
SEL1
GND
VDD
Vref
LPF
Iout
RA
RB
X1
X2
Y1
Y2
I/O
I/O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
LPF (Low Pass Filter) Input.
This input is used for internal PLL circuit.
Connect Resistance.
The RA, RB are used for RC-Oscillator mode.
If in X’tal/PLL mode then RA and RB should be Floating.
Connect Resistance.
Active low reset signal. (The reset pulse do not less than 100mS after
MCU stable)
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.
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.
Analog power supply signal.
Power supply
Power ground
Analog ground.
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.
Character pattern ROM chip select and output enable
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Description
Description
Character/Graphic LCD Controller
RA8802/8820
www.raio.com.tw