ra8816 RAIO Technology Inc., ra8816 Datasheet - Page 21

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

Preliminary Version 1.6
RAiO TECHNOLOGY INC.
[11h] Driver Control Register1 (DRCR_A)
[12h] Driver Control Register (DRCR_B)
BOFF: Booster control. 1
EN_R: Reference voltage control. 1
EN_G: V0 control. 1
ROFF: Voltage Follower control. 1
IDIR : Icon sequence select. 0
CDIR: Common sequency select. 0
SDIR: Segment sequency select. 0
CK_BS[1..0]: Select the clock of Booster. Assume the RC oscillator clock is 100KHz.
RR[2..0]: Setup the Resistor Ratio of Regulator. The ratio is V
RW
RW
0
0
are mapping to Common 63~0.
voltage.
internal reference voltage. The Regulator use external reference voltage.
EN_R and BOFF have to clear “0”(Off) to reduce power consumption.
internal Voltage Follower, and use external voltage to generate LCD Bias voltage. If use external
Voltage Follower, then EN_G, EN_R and BOFF have to clear “0”(Off) to reduce power
consumption.
CDIR/SDIR.
SEG0~143 are mapping to Segment 143~0.
CK_BS1 CK_BS0
BOFF
DB7
DB7
CK_BS1
EN_R
DB6
DB6
The V0 is generated by internal Regulator. 0
0
0
1
1
Note: The VREF is 2.1V.
RR2
Internal Booster enable. 0
0
0
0
0
1
1
1
1
CK_BS0
EN_G
RR2
DB5
DB5
0
1
0
1
RR1
Icon sequence is fixed. 1
Internal Voltage Follower enable for LCD Bias voltage. 0
0
0
1
1
0
0
1
1
Pins COM0~63 are mapping to Common 0~63. 1
Internal reference voltage enable for Regulator. 0
ROFF
Pins SEG0~143 are mapping to Segment 0~143. 1
DB4
DB4
RR1
RR0
Table 5-15
Table 5-16
0
1
0
1
0
1
0
1
21/68
SYS_CLK/6
SYS_CLK/8
SYS_CLK/2
SYS_CLK/4
Clock of Booster
DB3
IDIR
DB3
RR0
Resistor Ratio
X3.5
X4.5
X5.5
X6.4
X3
X4
X5
X6
Internal Booster disabled and used external
REF
DB2
DB2
: V
IRS
144x65 Character/Graphic LCD Driver
16.7KHz
12.5KHz
--
50KHz
25KHz
0.
Icon sequence follow the setting of
Please refer to Section 6-4-2.
Use external power for V0, and the
CDIR
DB1
DB1
HD1
SDIR
www.raio.com.tw
HD0
DB0
DB0
Pins COM0~63
RA8816
Disable the
Disable
Pins