ra8802 RAIO Technology Inc., ra8802 Datasheet - Page 23

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

Version 1.3
RAiO
6.11 Power Saving Mode
6.12 ASCII Block Selection
TECHNOLOGY INC.
RA8802/8820 provides an Interrupt signal (INT) to indicate three possible interrupts:
These three interrupts can be enabled or disabled respectively. REG [A0h] INTR controls the setup of
Interrupts. RA8802/8820 provides a Busy signal. When BUSY Flag is “1”, which means RA8802/8820 is
in busy status, so RA8802/8820 couldn’t access data of DDRAM but still accept the commands from
registers. This BUSY pin should be connected to MCU I/O input, and then MCU have to poll this pin
before accessing RA8802/8820.
The RA8802/8820 has four operation mode
Please refer to the register [00h] LCR of Chapter 5.2.
The RA8802/8820 built-in four blocks of ASCII Font. It including many special symbols that for users
display. This feature is set by Bit[1:0] of Register [F0h]. If user want to create their special symbol or
picture then it’s possible to make new ROM Code.
If Cursor Position X Register (CPXR)=INTX, a interrupt has occurred
If Cursor Position Y Register (CPYR)=INTY, a interrupt has occurred
Interrupt occurs when Touch Panel is touched
Normal Mode, Standby Mode, Sleep Mode and Off Mode.
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Character/Graphic LCD Controller
RA8802/8820
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