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