Datasheet

DEP 128064C1-Y Production Specification
Version: 0 PAGE: 6
16 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.
17 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.
18~25 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.
26 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 12.5μA.
27 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.
28 VCC
Power Supply for OEL Panel
This is the most positive voltage supply pin of the chip. A stabilization
capacitor should be connected between this pin and VSS when the
converter is used. It must be connected to external source when the
converter is not used.
29 VLSS
Ground of Analog Circuit
This is an analog ground pin. It should be connected to VSS externally.
30
NC
(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.