NoticeDifference between revisions of "ITDB02-2.2S/zh-cn"
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Revision as of 02:39, 21 July 2014
Contents
概述
ITDB02-2.2S 是一个2.2inch SPI TFT LCD屏幕模块，分辨率为320X240，262K种颜色。LCD模块的控制芯片为ILI9341，它的接口是SPI的，需要6根线（SCK,MISO,MOSI,CS,D/C,RST）来控制。而且，这个模块还包含了micro SD卡接口。
购买 ITDB02-2.2S
特色
- 兼容3.3/5V操作电平
- 自带micro SD卡接口
- 支持IO口或PMW来控制背光
规格
| PCB 尺寸 | 41mm X 68mm X 1.6mm |
| 电源电压 | 5V DC |
| 控制芯片 | ILI9341 |
| 分辨率 | 320*240 |
| LED数目 | 4 LEDs |
电气特性
| 参数 | 最小值 | 经典值 | 最大值 | 单位 |
| 电源电压 | 4.5 | 5 | 5.5 | VDC |
| 最高输入电压 (目标电压 = 3.3V) | 3 | 3.3 | 3.6 | V |
| 最高输入电压 (目标电压 = 5V) | 4.5 | 5 | 5.5 | V |
| 最低输入电压 | -0.3 | 0 | 0.5 | V |
| 消耗电流 | - | 40 | 80 | mA |
硬件图
Pin Map
| Pin | Type* | Description |
| VCC | P | 5V Power supply pin |
| GND | G | Ground |
| SCK | I | SPI SCK |
| MISO | O | SPI MISO |
| MOSI | I | SPI MOSI |
| CS | I | Chip Select for TFT |
| D/C | I | Command or parameter select |
| RST | I | RESET signal for TFT |
| LEDA* | I | Backlight control pin |
| SD_CS | I | Chip Select for SD |
- Type: P--Power supply; G--Ground; I--Input; O--Output.
- LEDA: When LEDA is set as high electronic level, the backlight turns on. When it's set as low electronic level, the backlight turns off.
Instruction
Display the image from micro SD card
- download the library from this link: https://github.com/adafruit/Adafruit_ILI9340 , then extract it into the directory \arduino\libraries
- copy the image woof.bmp from the directory Adafruit_ILI9340\examples\spitftbitmap to your SD card, then plug the card into the SD card slot on ITDB02-2.2S LCD module
- Use arduino IDE to open spitftbitmap.ino in the directory Adafruit_ILI9340\examples\spitftbitmap then upload it to UNO main board. Select 5V electronic level in the 2.2S LCD module, then use dupont lines to connect UNO and LCD module according to the table as below:
| 2.2S pins | UNO pins |
| VCC | 5V |
| GND | GND |
| SCK | D13 |
| MISO | D12 |
| MOSI | D11 |
| CS | D10 |
| D/C | D9 |
| RST | D8 |
| LEDA | 5V/3V3 |
| SD_CS | D4 |
- Power UNO main board, a picture of dog showed on the display.
Control LEDA backlight via PWM pins
- Use arduino IDE to open the demo 0.1Basics\Fade, then upload it into UNO
- Connect ITDB02-2.2S module to UNO according to the table as below:
| 2.2S pins | UNO pins |
| VCC | 5V |
| GND | GND |
| LEDA | D9 |
- Power UNO main board, you will see the backlight of display turn form dark to light circularly.
Download
Schematic--File:sch_ITDB02-2.2S.pdf
