Datasheet

DEP 128128E-Y Production Specification
Version: 0 PAGE: 5
2. Interface Pin Function
No. Symbol Function
1 VSS Ground pin. It must be connected to external ground.
2 VCC
Power supply for panel driving voltage. This is also the most positive power
voltage supply pin. It is supplied by external high voltage source.
3 VCOMH
COM signal deselected voltage level.
A capacitor should be connected between this pin and VSS. No external
power supply is allowed to connect to this pin.
4 VCI
Low voltage power supply and power supply for interface logic level. It should
match with the MCU interface voltage level and must be connected to
external source.
VCI must always set to be equivalent to or higher than VDD.
5 VDD Power supply pin for core logic operation.
6 BS1 MCU bus interface selection pins. Select appropriate logic setting as
described in the following table. BS2, BS1 and BS0 are pin select.
Bus Interface selection
BS[2
:1
]
Interface
0
0
4
li
n
e S
P
I
0
1
I
2
C
1
1
8
-
b
it
80
8
0
p
a
r
a
llel
1
0
8
-
b
it
68
0
0
p
a
r
a
llel
Note
(1) 0 is connected to VSS
(2) 1 is connected to VCI
7 BS2
8 VSS Ground pin. It must be connected to external ground.
9 IREF This pin is the segment output current reference pin
10 CS#
This pin is the chip select input connecting to the MCU.
The chip is enabled for MCU communication only when CS# is pulled LOW
(active LOW).
11 RES#
This pin is reset signal input.
When the pin is pulled LOW, initialization of the chip is executed.
Keep this pin pull HIGH during normal operation.