ra8803 RAIO Technology Inc., ra8803 Datasheet - Page 9

• Manufacturer Part Number: ra8803
• Description: Two Layers Character/graphic Lcd Controller Specification
• Manufacturer: RAIO Technology Inc.

Version 2.5
RAiO
4-3 Clock Interface
4-4 Peripheral Interface
TECHNOLOGY INC.
Pin Name
DISPOFF
Pin Name
KR[7..0]
LD[7..0]
RST#
IOUT
XCK
LPF
LP
X1
X2
Y1
Y2
XA
XB
I/O
I/O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
Touch Panel Input
This is connecting to the left pin(XL) of 4-wire touch panel.
Touch Panel Input
This is connecting to the right pin(XR) of 4-wire touch panel.
Touch Panel Input
This is connecting to the top pin(YU) of 4-wire touch panel.
Touch Panel Input
This is connecting to the bottom pin(YD) of 4-wire touch panel.
inversion signal.
LCD Common Latch
This is a latch signal for LCD driver to latch the Common data.
LCD Clock
This is a shift clock signal for LCD driver.
LCD Display OFF
This signal is used to control the LCD Display ON or OFF.
LCD Driver Data Bus
When 8-bit LCD driver IC is used. LD[7..0] are connected to LCD driver
data bus. When 4-bit CPU is used, LD[3..0] are connected to LCD driver
data bus and keep LD[7..4] floating.
Low Pass Filter Input
This is a low pass filter input. Please refer the circuit of application note.
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).
Reset Signal
This is a reset signal used to reset RA8803/8822. Active low.
DAC Current Output
DAC current source output used to contrast voltage control. This pin is tri-
state when DAC disbale.
Key Pad Input
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Two Layers Character/Graphical LCD Controller
Description
Description
RA8803/8822
www.raio.com.tw