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CAP1066 参数 Datasheet PDF下载

CAP1066图片预览
型号: CAP1066
PDF下载: 下载PDF文件 查看货源
内容描述: 6通道电容式触摸传感器,具有6个LED驱动器 [6 Channel Capacitive Touch Sensor with 6 LED Drivers]
分类和应用: 驱动器传感器
文件页数/大小: 71 页 / 960 K
品牌: SMSC [ SMSC CORPORATION ]
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6 Channel Capacitive Touch Sensor with 6 LED Drivers  
Datasheet  
settings, the MSB of the Delta Count register corresponds to a delta count of 8192 counts  
out of ~25,000 which corresponds to a touch of approximately 33% of the base capacitance  
(or a ΔC of 3.33pF from a 10pF base capacitance).  
Table 5.7 DELTA_SENSE Bit Decode  
DELTA_SENSE[2:0]  
2
1
0
SENSITIVITY MULTIPLIER  
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
128x (most sensitive)  
64x  
32x (default)  
16x  
8x  
4x  
2x  
1x - (least sensitive)  
Bits 3 - 0 - BASE_SHIFT[3:0] - Controls the scaling and data presentation of the Base Count registers.  
The higher the value of these bits, the larger the range and the lower the resolution of the data  
presented. The scale factor represents the multiplier to the bit-weighting presented in these register  
descriptions.  
APPLICATION NOTE: The BASE_SHIFT[3:0] bits normally do not need to be updated. These settings will not affect  
touch detection or sensitivity. These bits are sometimes helpful in analyzing the Cap Sensing  
board performance and stability.  
Table 5.8 BASE_SHIFT Bit Decode  
BASE_SHIFT[3:0]  
DATA SCALING  
3
2
1
0
FACTOR  
0
0
0
0
0
0
0
0
1
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1x  
2x  
4x  
8x  
16x  
32x  
64x  
128x  
256x  
256x  
(default = 1111b)  
All others  
Revision 1.1 (08-05-09)  
SMSC CAP1066  
DATA3S8HEET  
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