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Summary of Contents for Elecrow DLS29028B2
- Page 1 2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 DLS29028B2&DLS29028B1 2.8inch IPS TFT SPI Display Module User Manual 1 / 13...
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Page 2: Table Of Contents
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 CONTENTS 1. Rsource Description ..................3 2. Interface Description ..................... 4 3. Working principle ..................... 5 3.1. Introduction to ILI9341 Controller ................. 5 3.2. Introduction to SPI Communication Protocol ..............5 4. Hardware Description ................... -
Page 3: Rsource Description
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 1. Rsource Description The resource directory is shown in the following figure: Directory Content Description Contains sample programs and usage 1-Demo instructions for each MCU Including LCD screen specifications and product 2-Specification specifications Including touch screen size structure 3-Structure_Diagram documents, product size structure documents... -
Page 4: Interface Description
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 2. Interface Description The interface on the back of the module is shown in the following figure: Number Module Pin Pin Function Description LCD power positive LCD Power ground LCD_CS LCD selection control signal, Low level active LCD_RST LCD reset control signal, Low level reset LCD command / data selection control signal... -
Page 5: Working Principle
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 Capacitor touch screen IIC bus touch interrupt signal, when CTP_INT generating touch, input low level to the main control (modules without touch screens do not need to be connected) SD card selection control signal, low level active (without SD_CS SD card function, can be disconnected) 3. - Page 6 2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 power level. D/CX is the data/command control pin of the chip. When DCX is writing commands at low levels, data is written at high levels SCL is the SPI bus clock, with each rising edge transmitting 1 bit of data; SDA is the data transmitted by SPI, which transmits 8 bits of data at once.
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Page 7: Hardware Description
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 4. Hardware Description 4.1. 6P capacitive touch screen FPC interface P1 is a flip over FPC holder with a spacing of 6P 0.5mm, used to connect the 6P FPC cable of the capacitive touch screen and connect touch signals. 4.2. -
Page 8: Sd Card Slot Interface Circuit
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 4.3. SD card slot interface circuit SD_ CARD1 is a Micro SD card slot for inserting Micro SD cards, making it easy to use SD card expansion functions. The SPI bus and LCD used are shared. -
Page 9: Capacitor Touch Screen Iic Signal Level Conversion Circuit
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 the source of BSS138 is low, its gate and drain are cut off, LDEK is suspended, and the backlight circuit is cut off, thus turning off the light; When the LED input is at a high level, the source of BSS138 is at a high level, its gate and drain are conductive, LDEK is grounded, and the backlight circuit is conductive, thus turning on the light;... -
Page 10: Header Pin Interface
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 The source voltage is lower than the drain, and the gate and drain are cut off. The gate is pulled up to 3.3V high level, with 3V3_ CTP_ SDA is a high level. vice versa. -
Page 11: Control Signal Level Conversion Circuit
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 P2 is the module 14P FPC cable interface, which can only be connected to the main control through the FPC cable. 4.8. Control signal level conversion circuit U2 is a level conversion IC that converts between 5V and 3.3V. This circuit only uses the one-way function of 5V to 3.3V, and the signals that the module needs to write are converted through this circuit. -
Page 12: Example Program Usage Instructions
2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 5. Example program usage instructions For specific instructions, please refer to the example program usage instructions document in the example program directory. A. Connect the display module to the main control board (directly plug in, use DuPont cable or FPC cable connection);... - Page 13 2.8inch SPI module DLS29028B2_DLS29028B1 User Manual CR2023-MI2871 The specific setting method can be found on the following webpage: http://www.lcdwiki.com/Chinese_and_English_display_modulo_settings The Image2Lcd mold taking software settings are shown in the following figure: The Image2Lcd software needs to be set to scan horizontally, from left to right, from top to bottom, and with low bits in front.
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