DD-12864WE-1A - Datasheet Archive

OLED DISPLAY MODULE Application Notes PRODUCT NUMBER DD-12864WE-1A DD-12864WE-1A with EVK board Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data 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-12864WE-1A DD-12864WE-1A. 9 5.1 RECOMMENDED INITIAL CODE . 10 Product No. DD-12864WE-1A DD-12864WE-1A REV. A Page 2 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data REVISION RECORD Rev. Date A 8th May 2007 Product No. Page Chapt. Comment ECR no. First Issue DD-12864WE-1A DD-12864WE-1A REV. A Page 3 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data 1 EVK Schematic Product No. DD-12864WE-1A DD-12864WE-1A REV. A Page 4 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data 2 Symbol Definition D0-D7These pins are 8-bit bi-directional data bus to be connected to the MCU's data bus. CS#This pin is the chip select input. The chip is enabled for MCU communication only when CS is pulled low. C86, PS: These input pins are used to configure the MCU interface selection by appropriate logic setting, which is described in the following table. But in this EVK, which was fixed as 80-parallel interface. 6800 Parallel Interface 8080 Parallel Interface Serial Interface C86 0 1 0 PS 1 1 0 RD: NOTE: The EVK board has been hard wired to 80xx-parallel interface 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. When serial interface is selected, this pin E(RD) must be connected to VSS or VDD. The EVK has fixed as 80 series interface, so this pin just only for 80 series interface read function. WR: 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 must be connected to VSS or VDD. The EVK has fixed as 80 series interface, so this pin just only for 80 series interface write function. A0: This pin is Data/Command control pin. When the pin is pulled high, the data at D0-D7 is treated as display data. When the pin is pulled low, the data at D0-D7 will be transferred to the command register. For detail relationship to MCU interface signals, please refer to the timing characteristics diagrams at the following pages and datasheet. RES: This pin is reset signal input. When the pin is low, initialization of the chip is executed. HV: This is the most positive voltage supply pin of the chip. LV: Power supply pin for logic operation of the driver GND: Power supply ground DC IN: This is an internal DC-DC voltage converter of low voltage supply input VDD2 DC-OUT: This is an internal DC-DC voltage converter can generate a high voltage supply HV from a low voltage supply input (VDD2) VCOMH: The voltage output high level for signals IREF: Current setting Product No. DD-12864WE-1A DD-12864WE-1A REV. A Page 5 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data 3 Timing characteristics Figure 1: 8080-series MPU parallel interface characteristics Table 1: 8080-Series MPU Parallel Interface Timing Characteristics Product No. DD-12864WE-1A DD-12864WE-1A REV. A Page 6 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data 4 Connection Between OLED and EVK Figure 2 EVK PCB and DD-12864WE-1A DD-12864WE-1A Module Figure 3 the DD-12864WE-1A DD-12864WE-1A and EVK assembled (Top view) Product No. DD-12864WE-1A DD-12864WE-1A REV. A Page 7 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data The DD-12864WE-1A DD-12864WE-1A is COG type, please refer to Fig 2, Fig3. User can use leading wire to connect EVK with customers system. The example shows as Fig 4. Note1: Refer to Symbol define Note 2: J5, J6 must be connected by Jump. 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 (HV) Note 2: It is the power supply pin for logic operation of the driver (LV) Note 3: The leading wire has 3 pins totally in this case. (D0-D7, RD, WR, A0, RES, CS) Product No. DD-12864WE-1A DD-12864WE-1A REV. A Page 8 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data 5 How to use the DD-12864WE-1A DD-12864WE-1A Reset Set RES#=0; Delay 10ms; RES#=1 Initial IC code Suggest all registers set again Clear RAM Display On Start sending data Product No. DD-12864WE-1A DD-12864WE-1A REV. A Page 9 / 11 Copyright ©2007 DENSITRON TECHNOLOGIES plc. All rights reserved. Proprietary Data 5.1 Recommended Initial code RD recommend Initial Code: void init(void) { unsigned char i,j; write_c(0xa0); //segment remap write_c(0xda); //common pads hardware: alternative write_c(0x12); write_c(0xc0); //common output scan direction:com0~com127 write_c(0xa8); //multiplex ration mode:63 write_c(0x3f); write_c(0xd5); //display divide ratio/osc. freq. mode write_c(0x50); //Osc. Freq:5,DivideRation:0 write_c(0xdb); //VCOM deselect level mode:64 write_c(0x40); write_c(0x81); //contrast control mode:64 write_c(0x40); write_c(0xad); //DCDC control mode:off write_c(0x8a); //=clear internal RAM to "00H"=// for(i=0;i