介绍一款I2C 接口的触摸屏控制

swu123

【文件名】:1069@52RD_SX8650_Datasheet.pdf
【格　式】:pdf
【大　小】:764K
【简　介】:I2C 标准接口，ESD等级较出色，尤其适合针对ESD故障。 较快的响应。
[目　录】: 1. General Description................................................................................................................................................ 4
1.1. Pin Diagram DFN............................................................................................................................................ 4
1.2. Marking Information DFN................................................................................................................................ 4
1.3. Pin Diagram WLCSP ...................................................................................................................................... 5
1.4. Marking Information WLCSP ........................................................................................................................... 5
1.5. Pin Description................................................................................................................................................ 6
1.6. Simplified Block Diagram................................................................................................................................ 7
2. Electrical Characteristics ........................................................................................................................................ 8
2.1. Absolute Maximum Ratings ............................................................................................................................. 8
2.2. Recommended Operating Conditions.............................................................................................................. 9
2.3. Thermal Characteristics .................................................................................................................................. 9
2.4. Electrical Specifications ................................................................................................................................ 10
2.5. Host Interface Specifications ......................................................................................................................... 12
2.6. Host Interface Timing Waveforms.................................................................................................................. 13
2.7. Typical Operating Characteristics .................................................................................................................. 14
3. Functional Description .......................................................................................................................................... 16
3.1. General Introduction .................................................................................................................................... 16
3.2. Channel Pins................................................................................................................................................ 17
3.2.1. X+, X-, Y+. Y- ......................................................................................................................................... 17
3.2.2. AUX........................................................................................................................................................ 17
3.3. Host Interface and Control Pins ..................................................................................................................... 18
3.3.1. NIRQ ...................................................................................................................................................... 18
3.3.2. SCL ........................................................................................................................................................ 18
3.3.3. SDA........................................................................................................................................................ 18
3.3.4. A0........................................................................................................................................................... 19
3.3.5. NRST ..................................................................................................................................................... 19
3.4. Power Management Pins.............................................................................................................................. 20
3.4.1. VDD........................................................................................................................................................ 20
3.4.2. GND ....................................................................................................................................................... 20
4. Detailed Description.............................................................................................................................................. 21
4.1. Touch Screen Operation............................................................................................................................... 21
4.2. Coordinates Measurement............................................................................................................................ 22
4.3. Pressure Measurement................................................................................................................................. 23
4.4. Pen Detection ............................................................................................................................................... 25
4.5. Data Processing............................................................................................................................................ 26
4.6. Host Interface and Control ............................................................................................................................. 28
4.6.1. I2C Address ........................................................................................................................................... 28
4.6.2. I2C Write Registers ................................................................................................................................ 29
4.6.3. I2C Read Registers................................................................................................................................ 30
4.6.4. I2C Host Commands.............................................................................................................................. 31

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1. General Description................................................................................................................................................ 4
1.1. Pin Diagram DFN............................................................................................................................................ 4
1.2. Marking Information DFN................................................................................................................................ 4
1.3. Pin Diagram WLCSP ...................................................................................................................................... 5
1.4. Marking Information WLCSP ........................................................................................................................... 5
1.5. Pin Description................................................................................................................................................ 6
1.6. Simplified Block Diagram................................................................................................................................ 7
2. Electrical Characteristics ........................................................................................................................................ 8
2.1. Absolute Maximum Ratings ............................................................................................................................. 8
2.2. Recommended Operating Conditions.............................................................................................................. 9
2.3. Thermal Characteristics .................................................................................................................................. 9
2.4. Electrical Specifications ................................................................................................................................ 10
2.5. Host Interface Specifications ......................................................................................................................... 12
2.6. Host Interface Timing Waveforms.................................................................................................................. 13
2.7. Typical Operating Characteristics .................................................................................................................. 14
3. Functional Description .......................................................................................................................................... 16
3.1. General Introduction .................................................................................................................................... 16
3.2. Channel Pins................................................................................................................................................ 17
3.2.1. X+, X-, Y+. Y- ......................................................................................................................................... 17
3.2.2. AUX........................................................................................................................................................ 17
3.3. Host Interface and Control Pins ..................................................................................................................... 18
3.3.1. NIRQ ...................................................................................................................................................... 18
3.3.2. SCL ........................................................................................................................................................ 18
3.3.3. SDA........................................................................................................................................................ 18
3.3.4. A0........................................................................................................................................................... 19
3.3.5. NRST ..................................................................................................................................................... 19
3.4. Power Management Pins.............................................................................................................................. 20
3.4.1. VDD........................................................................................................................................................ 20
3.4.2. GND ....................................................................................................................................................... 20
4. Detailed Description.............................................................................................................................................. 21
4.1. Touch Screen Operation............................................................................................................................... 21
4.2. Coordinates Measurement............................................................................................................................ 22
4.3. Pressure Measurement................................................................................................................................. 23
4.4. Pen Detection ............................................................................................................................................... 25
4.5. Data Processing............................................................................................................................................ 26
4.6. Host Interface and Control ............................................................................................................................. 28
4.6.1. I2C Address ........................................................................................................................................... 28
4.6.2. I2C Write Registers ................................................................................................................................ 29
4.6.3. I2C Read Registers................................................................................................................................ 30
4.6.4. I2C Host Commands.............................................................................................................................. 31

rsdczw

这也要b？

evdo_cdma

广告贴居然也要rd？

ploiploi

虽然说的很混乱，但是应该描述清楚了的吧~等待中。

takachy

thnks[em08]