Datasheet

DEP 128064K1-W Production Specification
Version: 0 PAGE: 5
2. Interface Pin Function
No. Symbol Function
1 NC No connection
2 VCC
Power supply for panel driving voltage. This is also the most positive
power voltage supply pin.
3 VCOMH
COM signal deselected voltage level.
A capacitor should be connected between this pin and VSS.
4 IREF
This pin is the segment output current reference pin.
IREF is supplied externally.
5~12 D7~D0
These pins are bi-directional data bus connecting to the MCU data
bus.
Unused pins are recommended to tie LOW.
When serial interface mode is selected, D0 will be the serial clock
input: SCLK; D1 will be the serial data input: SDIN and D2 should be
kept NC.
When I2C mode is selected, D2, D1 should be tied together and
serve as SDAout,
SDAin in application and D0 is the serial clock input, SCL.
13 E/RD#
This pin is MCU interface input.
When 6800 interface mode is selected, this pin will be used as the
Enable (E) signal.
Read/write operation is initiated when this pin is pulled HIGH and the
chip is selected.
When 8080 interface mode is selected, this pin receives the Read
(RD#) signal. Read operation is initiated when this pin is pulled LOW
and the chip is selected.
When serial or I2C interface is selected
, this pin must be connected to
VSS.
14 R/W#
This pin is read / write control input pin connecting to the MCU
interface.
When 6800 interface mode is selected, this pin will be used as
Read/Write (R/W#) selection input. Read mode will be carried out
when this pin is pulled HIGH and write mode when LOW.
When 8080 interface mode is selected, this pin will be the Write
(WR#) input. Data write operation is initiated when this pin is pulled
LOW and the chip is selected.
When serial or I2C interface is selected,
this pin must be connected to
VSS.
15 D/C#
This pin is Data/Command control pin connecting to the MCU.
When the pin is pulled HIGH, the data at D[7:0] will be interpreted as
data.
When the pin is pulled LOW, the data at D[7:0] will be transferred to a
command register.
In I2C mode, this pin acts as SA0 for slave address selection.
When 3-
wire serial interface is selected, this pin must be connected to