DENSITRON DD-32645C-2A Application Notes

PRODUCT

NUMBER

OLED DISPLAY MODULE

Application Notes

DD-32645C-2A with EVK board

TABLE OF CONTENTS

1 EVK SCHEMATIC..........................................................................................................4

2 SYMBOL DEFINITION ................................................................................................. 5

3 TIMING CHARACTERISTICS ....................................................................................6

4 CONNECTION BETWEEN OLED AND EVK ...........................................................7

5 HOW TO USE THE DD-32645C-2A .............................................................................9

5.1 RECOMMENDED INITIAL CODE .................................................................................. 10

Product No.

DD-32645C-2A REV. A

Page 2 / 11

REVISION RECORD

Rev. Date Page Chapt. Comment ECR no.

A 21 Jun. 06 First Issue

Product No.

DD-32645C-2A REV. A

Page 3 / 11

1 EVK Schematic

Product No.

DD-32645C-2A REV. A

Page 4 / 11

2 Symbol Definition

Note: The EVK is hard wired to 8080 Parallel interface.

D0-D7：These pins are 8-bit bi-directional data bus to be connected to the MCU’s data bus.

E/RD#：This pin is MCU interface input. When connecting to an 8080-microprocessor, this

pin receives the Read (RD#) signal. Data read operation is initiated when this pin is pulled low and the chip is selected.

R/W#：This pin is MCU interface input. 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.

D/C#：This pin is Data/Command control pin. When the pin is pulled high, the data at D7- D0 is treated as display data. When the pin is pulled low, the data at D7-D0 will be transferred

to the command register. For detail relationship to MCU interface signals, please refer to the timing characteristics diagrams.

RES#：This pin is reset signal input. When the pin is low, initialization of the chip is executed.

CS#：This pin is the chip select input. The chip is enabled for MCU communication only when CS is

pulled low.

VCC：This is the most positive voltage supply pin of the chip.

VDD：Power supply pin for logic operation of the driver.

VSS：This is the ground pin and also acts as a reference for logic pins and OLED driving voltages.

This should be connected to the external ground

VCOMH：

should be connected between this pin and VSS.

NC：Dummy pad, do not group or short NC pins together.

This is an input pin for the voltage output high level for COM signals. A capacitor

Product No.

DD-32645C-2A REV. A

Page 5 / 11

3 Timing characteristics

VDD = 2.4 to 3.5V, TA= -40to 85°C

Table 3 8080-Series MPU Parallel Interface Timing Characteristics

Figure 1 8080-series MPU parallel interface characteristics

Product No.

DD-32645C-2A REV. A

Page 6 / 11

4 Connection Between OLED and EVK

Figure 2 EVK PCB and DD-32645C-2A Module

Figure 3 the DD-32645C-2A and EVK assembled (Top view)

Product No.

DD-32645C-2A REV. A

Page 7 / 11

the connection pads are on top side. When assemble the module with EVK. Just put the module in the connector and pull the tenon to fix the module. See the Figure 3.

Figure 4 control MCU (not supplied) connected with EVK

Note 1：It is the external most positive voltage supply. In this sample is connected to power supply.

Product No.

DD-32645C-2A REV. A

Page 8 / 11

5 How to use the DD-32645C-2A

Product No.

DD-32645C-2A REV. A

Reset Set

RES#=0; Delay 10ms; RES#=1

Initial IC

code

Suggest all registers set again

Display on

Clear RAM

Start

sending

data

Page 9 / 11

5.1 Recommended Initial code

void initial(void) {

BS1=1; // use 8080 interface BS2=1; DC=0; WR=0; RD=0; CS=0; RES=0; delay(100); RES=1; write_c(0xAE); //display off write_c(0x81); //set contrast write_c(0xff); //max current write_c(0xa8); //set duty write_c(0x3F); //duty 63 write_c(0xA0); //Set Segment Re-map write_c(0xd3); //display offset write_c(0x00); //set 00 write_c(0x40); //Start line write_c(0xC8); //Set COM Output Scan Direction write_c(0xda); //Set COM pins hardware configuration write_c(0x12); //Set COM pins hardware configuration write_c(0xD9); //Set precharge write_c(0xf1); //precharge=fh , discharge=1h write_c(0xDB); //Set VcomH write_c(0x49); //VcomH=73 write_c(0xA4); //Normal Mode write_c(0xA6); //No Inverse write_c(0xAF); //display on

}

void write_c(unsigned char ins_c) {

DC=0; CS=0; RD=1; /*tell system only write*/ WR=0; d_bus=ins_c; WR=1; CS=1; DC=1;

}

Product No.

DD-32645C-2A REV. A

Page 10 / 11

void write_d(unsigned char ins_d) {

DC=1; CS=0; RD=1; /*tell system only write*/ WR=0; d_bus=ins_d; CS=1; WR=1; DC=1;

}

void delay(int count) {

int i,j; for(i=0;i<=count;i++)

for(j=0;j<=1000;j++) ; }

＊write_c= Write Command , write_d= Write Data

Product No.

DD-32645C-2A REV. A

Page 11 / 11

PRODUCT

NUMBER

OLED DISPLAY MODULE

Application Notes

DD-2864BY-2A with EVK board

TABLE OF CONTENTS

1 EVK SCHEMATIC..........................................................................................................4

2 SYMBOL DEFINITION ................................................................................................. 5

3 TIMING CHARACTERISTICS ....................................................................................6

4 CONNECTION BETWEEN OLED AND EVK ........................................................... 7

5 HOW TO USE THE DD-2864BY-2A.............................................................................9

5.1 RECOMMENDED INITIAL CODE .................................................................................. 10

Product No.

DD-2864BY-2A

REV. A

Page 2 / 11

REVISION RECORD

Rev. Date Page Chapt. Comment ECR no.

A 30-Augu-06 First Issue

Product No.

DD-2864BY-2A

REV. A

Page 3 / 11

1 EVK Schematic

Product No.

DD-2864BY-2A

REV. A

Page 4 / 11

2 Symbol Definition

Note: The EVK is hard wired to 8080 Parallel interface.

D0-D7：These pins are 8-bit bi-directional data bus to be connected to the MCU’s data bus.

RD#：This pin is MCU interface input. When connecting to an 8080-microprocessor, this pin

receives the Read (RD#) signal. Data read operation is initiated when this pin is pulled low and the chip is selected.

WR#：This pin is MCU interface input. 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.

D/C#：This pin is Data/Command control pin. When the pin is pulled high, the data at D7- D0 is treated as display data. When the pin is pulled low, the data at D7-D0 will be transferred

to the command register. For detail relationship to MCU interface signals, please refer to the timing characteristics diagrams.

RES#：This pin is reset signal input. When the pin is low, initialization of the chip is executed.

CS#：This pin is the chip select input. The chip is enabled for MCU communication only when CS is pulled low.

VCC：This is the most positive voltage supply pin of the chip.

VDD：Power Supply pin for logic operation of the driver.

VSS：This is a ground pin. It also acts as a reference for the logic pins and the OLED driving

voltages. It must be connected to external ground.

VCOMH：This is an input pin for the voltage output high level for COM signals. A capacitor should be connected between this pin and VSS.

NC：Dummy pad. Do not group or short NC pins together.

Product No.

DD-2864BY-2A

REV. A

Page 5 / 11

3 Timing characteristics

VDD = 2.4 to 3.5V, TA= -40to 85°C

Table 2 8080-Series MPU Parallel Interface Timing Characteristics

Figure 1 8080-series MPU parallel interface characteristics

Product No.

DD-2864BY-2A

REV. A

Page 6 / 11

4 Connection Between OLED and EVK

Figure 2 EVK PCB and DD-2864BY-2A Module

Figure 3 the DD-2864BY-2A and EVK assembled (Top view)

Product No.

DD-2864BY-2A

REV. A

Page 7 / 11

Figure 4 control MCU (not supplied) connected with EVK

Note 1：It is the external most positive voltage supply. In this sample is connected to power supply.

Product No.

DD-2864BY-2A

REV. A

Page 8 / 11

5 How to use the DD-2864BY-2A

Reset Set

RES#=0; Delay 10ms; RES#=1

Initial IC

code

Suggest all registers set again

Display on

Clear RAM

Start

sending

data

Product No.

DD-2864BY-2A

REV. A

Page 9 / 11

5.1 Recommended Initial code

void initial(void) { BS1=1; // use 8080 interface BS2=1; DC=0; WR=0; RD=0; CS=0; RES=0; delay(100); RES=1; write_c(0xAE); //display off write_c(0x81); //set contrast write_c(0xff); //max current write_c(0xa8); //set duty write_c(0x3F); //duty 63 write_c(0xA0); //Set Segment Re-map write_c(0xd3); //display offset write_c(0x00); //set 00 write_c(0x40); //Start line write_c(0xC8); //Set COM Output Scan Direction write_c(0xda); //Set COM pins hardware configuration write_c(0x12); //Set COM pins hardware configuration write_c(0xD9); //Set precharge write_c(0xf1); //precharge=fh , discharge=1h write_c(0xDB); //Set VcomH write_c(0x49); //VcomH=73 write_c(0xA4); //Normal Mode write_c(0xA6); //No Inverse write_c(0xAF); //display on } void write_c(unsigned char ins_c) { DC=0; CS=0; RD=1; /*tell system only write*/ WR=0; d_bus=ins_c; WR=1; CS=1; DC=1; }

Product No.

DD-2864BY-2A

REV. A

Page 10 / 11

void write_d(unsigned char ins_d) { DC=1; CS=0; RD=1; /*tell system only write*/ WR=0; d_bus=ins_d; CS=1; WR=1; DC=1; } void delay(int count) { int i,j; for(i=0;i<=count;i++) for(j=0;j<=1000;j++) ; }

＊write_c= Write Command , write_d= Write Data

Product No.

DD-2864BY-2A

REV. A

Page 11 / 11

PRODUCT

NUMBER

OLED DISPLAY MODULE

Application Notes

DD-2832BE-2A with EVK board

TABLE OF CONTENTS

1 EVK SCHEMATIC..........................................................................................................4

2 SYMBOL DEFINITION ................................................................................................. 5

3 TIMING CHARACTERISTICS ....................................................................................6

4 CONNECTION BETWEEN OLED AND EVK ...........................................................7

5 HOW TO USE THE DD-2832BE-2A............................................................................. 9

5.1 RECOMMENDED INITIAL CODE .................................................................................. 10

Product No.

DD-2832BE-2A

REV. A

Page 2 / 11

REVISION RECORD

Rev. Date Page Chapt. Comment ECR no.

A 20-June-06 First Issue

Product No.

DD-2832BE-2A

REV. A

Page 3 / 11

1 EVK Schematic

Product No.

DD-2832BE-2A

REV. A

Page 4 / 11

2 Symbol Definition

Note: The EVK is hard wired to 8080 Parallel interface.

D0-D7：These pins are 8-bit bi-directional data bus to be connected to the MCU’s data bus.

E/RD#：This pin is MCU interface input. When connecting to an 8080-microprocessor, this

pin receives the Read (RD#) signal. Data read operation is initiated when this pin is pulled low and the chip is selected.

R/W#：This pin is MCU interface input. 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.

D/C#：This pin is Data/Command control pin. When the pin is pulled high, the data at D7- D0 is treated as display data. When the pin is pulled low, the data at D7-D0 will be transferred

to the command register. For detail relationship to MCU interface signals, please refer to the timing characteristics diagrams.

RES#：This pin is reset signal input. When the pin is low, initialization of the chip is executed.

CS#：This pin is the chip select input. The chip is enabled for MCU communication only when CS is pulled low.

VCC：This is the most positive voltage supply pin of the chip.

VDD：Power Supply pin for logic operation of the driver.

VSS：This is a ground pin. It also acts as a reference for the logic pins and the OLED driving

voltages. It must be connected to external ground.

VCOMH：This is an input pin for the voltage output high level for COM signals. A capacitor should be connected between this pin and VSS.

NC：Dummy pad. Do not group or short NC pins together.

Product No.

DD-2832BE-2A

REV. A

Page 5 / 11

3 Timing characteristics

VDD = 2.4 to 3.5V, TA= -40to 85°C

Table 2 8080-Series MPU Parallel Interface Timing Characteristics

Figure 1 8080-series MPU parallel interface characteristics

Product No.

DD-2832BE-2A

REV. A

Page 6 / 11

4 Connection Between OLED and EVK

Figure 2 EVK PCB and DD-2832BE-2A Module

Figure 3 the DD-2832BE-2A and EVK assembled (Top view)

Product No.

DD-2832BE-2A

REV. A

Page 7 / 11

Figure 4 control MCU (not supplied ) connected with EVK

Note 1：It is the external most positive voltage supply. In this sample is connected to power supply.

Product No.

DD-2832BE-2A

REV. A

Page 8 / 11

5 How to use the DD-2832BE-2A

Reset Set

RES#=0; Delay 10ms; RES#=1

Initial IC

code

Suggest all registers set again

Display on

Clear RAM

Start

sending

data

Product No.

DD-2832BE-2A

REV. A

Page 9 / 11

5.1 Recommended Initial code

void initial(void) { BS1=1; // use 8080 interface BS2=1; DC=0; WR=0; RD=0; CS=0; RES=0; delay(100); RES=1; write_c(0xAE); //display off write_c(0x81); //set contrast write_c(0xff); //max current write_c(0xa8); //set duty write_c(0x1F); //duty 31 write_c(0xA0); //Set Segment Re-map write_c(0xd3); //display offset write_c(0x20); //set 32 write_c(0x40); //Start line write_c(0xC8); //Set COM Output Scan Direction write_c(0xda); //Set COM pins hardware configuration write_c(0x12); //Set COM pins hardware configuration write_c(0xD9); //Set precharge write_c(0xf1); //precharge=fh , discharge=1h write_c(0xDB); //Set VcomH write_c(0x49); //VcomH=73 write_c(0xA4); //Normal Mode write_c(0xA6); //No Inverse write_c(0xAF); //display on }

void write_c(unsigned char ins_c) { DC=0; CS=0; RD=1; /*tell system only write*/ WR=0; d_bus=ins_c; WR=1; CS=1; DC=1; }

Product No.

DD-2832BE-2A

REV. A

Page 10 / 11

void write_d(unsigned char ins_d) { DC=1; CS=0; RD=1; /*tell system only write*/ WR=0; d_bus=ins_d; CS=1; WR=1; DC=1; }

void delay(int count) { int i,j; for(i=0;i<=count;i++) for(j=0;j<=1000;j++) ; }

＊write_c= Write Command , write_d= Write Data

Product No.

DD-2832BE-2A

REV. A

Page 11 / 11