
U
LTRA
C
HIP
High-Voltage Mixed-Signal IC
2000
4
Product Specifications
P
IN
D
ESCRIPTION
Name
Type
Pins
Description
M
AIN
P
OWER
S
UPPLY
V
DD1
V
DD2
V
DD3
PWR
V
DD1
supplies for display data RAM and digital logic, V
DD2
supplies for
V
LCD
/V
B
generator, V
DD3
supplies for V
REF
and other analog circuits.
V
DD2
/V
DD3
should be connected to the same power source. But V
DD1
can
be connected to a source voltage no higher than V
DD2
/V
DD3
.
In COG applications, always use separate ITO traces for V
DD1
, V
DD2
and
V
DD3
to reduce noise coupling.
V
SS
V
SS2
GND
Ground. In COG applications, use separate ITO traces to connect V
SS
and V
SS2
to the separate GND pins or to the shared GND pin and
minimize both ITO resistance.
LCD P
OWER
S
UPPLY
V
B1+
V
B1–
V
B0–
V
B0+
PWR
LCD Offset Voltages. Connect two C
B
capacitors between V
B+
to V
B0+
and V
B0–
to V
B–
. For optimum operation result, minimize the ITO trace
resistance of these nodes.
Place C
B1
and C
B0
on the FPC or COF to reduce I/O pin count by 4.
V
LCD-IN
V
LCD-OUT
PWR
Main LCD Power Supply. When internal V
LCD
is used, connect these
pins together. When external V
LCD
source is used, connect external
V
LCD
source to V
LCD-IN
pins and leave V
LCD-OUT
pins open.
A by-pass capacitor C
L
should be connected between V
LCD
and V
SS2
.
Minimize the ITO trace resistance in COG applications.
N
OTE
Recommended capacitor values:
C
B
: 150~500x LCD load capacitance or 1.0uF (V
BR
> 3V), whichever is higher.
C
L
: 20~50x LCD load capacitance or 0.2uF (V
BR
> V
LCD
+1V), whichever is higher.
Name
I/O
Pins
Description
LCD D
RIVE
O
UTPUT
(
UP TO
198
PINS
)
C0,
~
C101
HV
LCD column driver outputs. Support up to 102 columns.
Leave unused drivers open-circuit.
RIC
HV
LCD icon driver outputs. RIC has two pads. These two pads are used to
drive icons. Leave unused drivers open-circuit.
R1,
R3, ...
R63
R2,
R4, …
HV
LCD row driver outputs. Support up to 64 rows.
Drivers for even and odd row are group into two separate groups along
the two sides of the IC. Leave unused drivers open-circuit.