ra8803 RAIO Technology Inc., ra8803 Datasheet - Page 10

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

Version 2.5
RAiO
TECHNOLOGY INC.
CLK_OUT
SYS_DW
SYS_NM
SYS_FQ
SYS_DB
SYS_MI
KC[7.0]
O
O
I
I
I
I
I
These pins are keypad inputs.
Key Pad Output
These pins are keypad outputs.
Clock Output
This is system clock output pin.
Test Pin
This is a test pin. Normally it connects to high.
System Clock Select
This pin is used to select clock source.
Pull Low (0) : X’tal/PLL Mode.
Pull High(1) : External Clock.
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 pin “XA”.
LCD Driver Data Bus Select
This pin is used to select data bus of LCD driver is 8-Bit or 4-Bit:
Pull Low(0) : 4-Bit
Pull High(1) : 8-Bit
When SYS_DW is Pull Low, then the LCD driver data bus Is 4-Bit.
When SYS_DW is Pull High, then the LCD driver data bus is 8-Bit.
MPU Type Select
This pin is used to select MPU type:
Pull Low(0) : I8080 Series
Pull High(1) : M6800 Series
When SYS_MI is Pull Low, then the MPU Interface of RA8803/8822 is
suppported I8080.
When SYS_MI is Pull High, then the MPU Interface of RA8803/8822 is
supported M6800.
8080 MPU Data Bus Select
This pin is used to select data bus of 8080 MPU is 4-Bitor 8-Bit:
Pull Low(0) : 4-Bit
Pull High(1) : 8-Bit
When SYS_DB is Pull Low, then the 8080 MPU Interface of RA8803/8822
is supported 4-Bit.
When SYS_DB is Pull High, then the 8080 MPU Interface of RA8803/8822
is supported 8-Bit.
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Two Layers Character/Graphical LCD Controller
RA8803/8822
www.raio.com.tw