EVK-CONNECT-021 DENSITRON, EVK-CONNECT-021 Datasheet - Page 5

• Manufacturer Part Number: EVK-CONNECT-021
• Description: CONNECTOR BOARD
• Manufacturer: DENSITRON

Specifications of EVK-CONNECT-021

• Svhc: No SVHC (18-Jun-2010)
• Accessory Type: Connection Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DD-25664YW-3A/4A, DD-25664BE-3A/4A OLED Displays

2 SYMBOL DEFINITION
D0-D7：These pins are bi-directional data bus connecting to the MCU data bus.
Unused pins are recommended to tie LOW. (Except for D2 pin in SPI mode)
E/RD#：This pin is MCU interface input.
When interfacing to a 6800-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 chip is selected.
When connecting to an 8080-microprocessor, this pin receives the Read (RD#) signal. Read operation is initiated
when this pin is pulled LOW and the chip is selected. When serial interface is selected, this pin E(RD#) must be
connected to VSS.
W/R# : This pin is read / write control input pin connecting to the MCU interface. When interfacing to a 6800-
series microprocessor, 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 interface is selected, this pin R/W (WR#)
must be connected to VSS.
D/C# : This pin is Data/Command control pin connecting to the MCU. When the pin is pulled HIGH, the content
at D[7:0] will be interpreted as data. When the pin is pulled LOW, the content at D[7:0] will be interpreted as
command.
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.
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.
BS0/BS1 : These pins are MCU interface selection input. See the following table:
VCC : This is the most positive voltage supply pin of the chip. It can be supplied externally or generated
internally by using internal DC-DC voltage converter.
VDD : This is a voltage supply pin. It must be connected to external source.
VDDIO : Power supply for interface logic level. It should be matched with the MCU interface voltage level.
VCI : Low voltage power supply. VCI must always be equal to or higher than VDD and VDDIO.
VSS : This is a ground pin. It also as a reference for the logic pins and the OLED driving voltages. It must be
connected to external ground.
NC : These pins should be left open individually.
DD-25664XX-3A/4A
REV. A
Product No.
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