EVK-CONNECT-023

OLED DISPLAY MODULE Application Notes PRODUCT NUMBER DD-12832XX-1A with EVK board Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data TABLE OF CONTENTS 1 EVK SCHEMATIC.......................................................................................................... 4 2 SYMBOL DEFINITION ................................................................................................. 5 3 TIMING CHARACTERISTICS .................................................................................... 6 3.1 3.2 3.3 80 SERIES MPU PARALLEL INTERFACE ....................................................................... 6 6800 SERIES MPU PARALLEL INTERFACE ................................................................... 8 SPI INTERFACE ....................................................................................................... 9 4 CONNECTION BETWEEN OLED AND EVK ......................................................... 10 5 POWER DOWN AND POWER UP SEQUENCE...................................................... 12 6 HOW TO USE THE DD-12832XX-1A......................................................................... 13 6.1 RECOMMENDED INITIAL CODE .................................................................................. 14 Product No. DD-12832XX-1A REV. A Page 2 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data REVISION RECORD Rev. Date A 08th December 2008 Product No. Page Chapt. Comment ECR no. First Issue DD-12832XX-1A REV. A Page 3 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 1 EVK Schematic Product No. DD-12832XX-1A REV. A Page 4 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 2 Symbol Definition VCC: Power supply for panel driving voltage. VSS: This is ground pin. VDD: Power supply for core logic operation. VDDIO: Power supply for interface logic level. BS0~BS2: MUC bus interface selection pin (BS0 pulled LOW in internal). CS: This pin is chip select input (active LOW). RES: This pin is reset signal input (active LOW). D/C: This is DATA/COMMAND control pin. When it is Pulled HIGH, the data at D[0~7] is treated as data. When it is pulled LOW, the data at D[0~7] will be transferred to the command register. In I2C mode, this pin acts as SA0 for slave address select. R/W: This is read/write control input pin connecting to the MCU interface. When interface to a 6800series microprocessor, Read mode will be carried out when this pin is pulled HIGH and write mode when low. When interface to an 8080-microprocessor, this pin when be the data Write input. When serial interface is selected, this pin must be connected to Vss. E/RD: When interface to a 6800-series microprocessor, this pin will be used as the Enable (E) signal. When interface to an 8080-microprocessor, this pin receives the Read (RD#)signal. D0~D7：These are 8-bit bi-directional data bus to be connected to the microprocessors data bus. When serial interface mode is selected, D0 (SCLK) will be the serial clock input, D1 (SDIN) will be the serial data input and D2 should be left opened. When I2C mode is selected, D1 (SDAin) AND D2 (SDAout) should be tied together, D0 (SCL) is the I2Cclock input IREF: This is segment output current reference pin. VCOMH: This pin for COM signal deselected level voltage. Product No. DD-12832XX-1A REV. A Page 5 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 3 Timing characteristics 3.1 80 Series MPU parallel interface Write Characteristics Figure 1: 80-series MPU parallel interface write timing characteristics Table 1: 80-Series MPU Parallel Interface Write Timing Characteristics Product No. DD-12832XX-1A REV. A Page 6 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data Figure 2: 80-series MPU parallel interface Read timing characteristics Table 2: 80-Series MPU Parallel Interface Read Timing Characteristics Product No. DD-12832XX-1A REV. A Page 7 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 3.2 6800 Series MPU parallel interface Figure 3: 6800-Series MPU Parallel Interface Write Timing Characteristics Table 3: 6800-Series MPU Parallel Interface Write Timing Characteristics Product No. DD-12832XX-1A REV. A Page 8 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 3.3 SPI INTERFACE Figure 4: Serial Peripheral Interface Timing Characteristics Table 4: Serial Peripheral Interface Timing Characteristics Product No. DD-12832XX-1A REV. A Page 9 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 4 Connection Between OLED and EVK Figure 5 EVK PCB and DD-12832XX-1A Module The DD-12832XX-1A is COG type module; please refer to figure 1 & 2. User can use leading wire to connect EVK with customers systems. The example shown in Fig Figure 6 combination of the module Product No. DD-12832XX-1A REV. A Page 10 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data Figure 7: EVK with test platform Note 1: It is OLED high voltage supply Note 2: It is logic voltage supply Note 3: Those are leading wire connect to control board. Those are data pin (D0~D7) Note 4: Those are leading wore connect to control board. Those are control pin. (DC, CS, RD, WR, RES) Product No. DD-12832XX-1A REV. A Page 11 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 5 Power down and Power Up sequence To protect the OLED panel and extend the panel life time the driver IC power up/down routine should include a delay period between high voltage and low voltage power sources during turn on/off. So that the panel has enough time to charge up or discharge before/ after operation. Product No. DD-12832XX-1A REV. A Page 12 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 6 How to use the DD-12832XX-1A Reset Driver IC RES=0; Delay 10ms; RES=1 Driver IC Initial code Suggest all registers set again Display On Clear RAM Start Display Product No. DD-12832XX-1A REV. A Page 13 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data 6.1 Recommended Initial code void initial() { write_command(0xae); write_command(0x00); write_command(0x10); write_command(0x40); write_command(0x2e); write_command(0xb0); write_command(0x81); write_command(0x7f); write_command(0xa1); write_command(0xa4); write_command(0xa6); write_command(0xa8); write_command(0x3f); write_command(0xd3); write_command(0x00); write_command(0xad); write_command(0x8e); write_command(0xc8); write_command(0xd5); write_command(0xf0); write_command(0xd8); write_command(0x05); write_command(0xd9); write_command(0xc2); write_command(0xda); write_command(0x12); write_command(0xdb); write_command(0x08); write_command(0xaf); } Product No. //(display on) //set low column address //set high column address //(display start set) //(stop horzontal scroll) //(page address) //(set contrast control register) //(set segment re-map) //(normal display mode) //(set normal/inverse display) //(set multiplex ratio) //(set display offset) //(set dc-dc on/off) // //(set com output scan direction) //(set display clock divide ratio/oscillator/frequency) // //(set area color mode on/off & low power display mode ) // //(set pre-charge period) //(set com pins hardware configuration) //(set vcom deselect level) //(display on) DD-12832XX-1A REV. A Page 14 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data WRITE DATA & COMMAND SUB FUNCTION void write_command(unsigned char aa) { IOCLR = 0x000000ff; IOSET = RD_IN; //RD=1 IOCLR = DC_IN; //DC=0 IOCLR = CS_IN; //CS=0 IOCLR = WR_IN; //WR=0 IOSET = aa; //--------input command IOSET = WR_IN; //WR=1 IOSET = CS_IN; //CS=1 IOCLR = RD_IN; } void write_data(unsigned char bb) { IOCLR = 0x000000ff; IOSET = RD_IN; //RD=1 IOSET = DC_IN; //DC=1 IOCLR = CS_IN; //CS=0 IOCLR = WR_IN; //WR=0 IOSET = bb; //--------input data IOSET = WR_IN; //WR=1 IOSET = CS_IN; //CS=1 } Note: RD recommends Initial code and sub function for 8080 series CPU interface. Product No. DD-12832XX-1A REV. A Page 15 / 15 Copyright ©2008 DENSITRON TECHNOLOGIES plc. All rights reserved. – Proprietary Data