ra8816 RAIO Technology Inc., ra8816 Datasheet - Page 20

• Manufacturer Part Number: ra8816
• Description: 144x65 Character/graphic Lcd Driver
• Manufacturer: RAIO Technology Inc.

Preliminary Version 1.6
RAiO TECHNOLOGY INC.
[0Fh] Interrupt Status Register (ISR)
[10h] Contrast Adjust Register (CSTR)
BF: Busy Flag. 1
IO_I: I/O Port Interrupt. 1
SCR_I: Scroll interrupt. 1
KI: Key-scan interrupt. 1
BI: Busy Interrupt. 1
BR[2..0]: Setup the LCD Bias(Base on 144x65).
CT[4..0]: Setup the Contrast(32 Level). Normally depend on the liquid, power and panel size to adjust the
RW
RW
1
0
Interrupt
best display quality.
DB7
DB7
BR2
BF
Display RAM is in busy(Data Write). 0
DB6
DB6
BR1
--
Interrupt for the activity of writing data to display RAM completed. 0
Interrupt for key pressed. 0
Interrupt for I/O port. 0
Interrupt for scroll complete ， 0
CT4 CT3 CT2 CT1 CT0
0
0
1
BR2
0
0
0
0
1
1
1
1
DB5
DB5
BR0
--
0
0
1
BR1
0
0
1
1
0
0
1
1
0
0
1
:
:
DB4
DB4
CT4
--
Table 5-13
Table 5-14
0
0
1
20/68
BR0
0
1
0
1
0
1
0
1
0
1
1
DB3
IO_I
DB3
CT3
No I/O port interrupt.
No Key pressed Interrupt.
Contrast
Display RAM is idle(Write complete).
Light
Bias
Dark
No scroll Interrupt.
SCR_I
1/5
1/6
1/7
1/8
1/9
1/9
1/9
1/9
DB2
DB2
CT2
144x65 Character/Graphic LCD Driver
DB1
DB1
CT1
KI
www.raio.com.tw
DB0
DB0
CT0
BI
RA8816
No busy