Datasheet

DEP 128064A-W Production Specification
Version: 2 PAGE: 6
11
R/W#
Read/Write Select or Write
This pin is MCU interface input. When interfacing to a
68XX-series microprocessor, this pin will be used as
Read/Write (R/W#) selection input. Pull this pin to “High” for
read mode and pull it to “Low” for write mode.
When 80XX 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 CS# is pulled low.
12
E/RD#
Read/Write Enable or Read
This pin is MCU interface input. When interfacing to a
68XX-series microprocessor, this pin will be used as the
Enable (E) signal. Read/write operation is initiated when this
pin is pulled high and the CS# is pulled low.
When connecting to an 80XX-microprocessor, this pin
receives the Read (RD#) signal. Data read operation is
initiated when this pin is pulled low and CS# is pulled low.
13~20
D0~D7
Host Data Input/Output Bus
These pins are 8-bit bi-directional data bus to be connected
to the microprocessor’s data bus. When serial mode is
selected, D1 will be the serial data input SDIN
and D0 will be
the serial clock input SCLK. When I2C mode is selected, D2
& D1 should be tired together and serve as SDAout & SDAin
in application and D0 is the serial clock input SCL.
21
IREF
Current Reference for Brightness Adjustment
This pin is segment current reference pin. A resistor should
be connected between this pin and VSS. Set the current
lower than 10μA.
22
VCOMH
Voltage Output High Level for COM Signal
This pin is the input pin for the voltage output high level for
COM signals. A capacitor should be connected between this
pin and VSS.
23
VCC
Power Supply for OEL Panel
This is the most positive voltage supply pin of the chip.
It must be supplied externally.
24
GND
Reserved Pin (Supporting Pin)
The supporting pins can reduce the influences from stresses
on the function pins. These pins must be connected to
external ground.