参数资料
型号: AS3658F-BCTP
厂商: ams
文件页数: 145/158页
文件大小: 0K
描述: IC PMU POWER/AUDIO 124-CTBGA
标准包装: 2,500
应用: 便携式设备
电流 - 电源: 7mA
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 124-TFBGA
供应商设备封装: 124-CTBGA(8x8)
包装: 带卷 (TR)
AS3658
Data Sheet Confidential
- Detailed Description - System Functions
The touchpen controller is operating according to the following state diagram:
Figure 60. Touchpen State diagram
 
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10.10.1 Software guidelines
1. Setup the configuration registers (tpen – control 1..3) according the hardware
2. Enable receiving of touchpen interrupts (either through XINT or GPIO4_CURR4)
3. Upon receiving of a touchpen interrupt, readout tpen_xmsb, tpen_ymsb (and if required tpen_pressmsb and
tpen_xypresslsb) with a single I2C blockread . This ensured, that the x,y,z is correctly readout and all data belong
to one single touchpen x,y,z conversion
4. Perform all the required processing with the data (e.g. accept a pen-down only if the pen is forced onto the
touchscreen with a minimum pressure [z-position])
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