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參數(shù)資料
| 型號(hào)： | CAP1014-1-EZK |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC32 |
| 封裝： | 5 X 5 MM, 0.50 MM PITCH, ROHS COMPLIANT, QFN-32 |
| 文件頁數(shù)： | 49/73頁 |
| 文件大?。?/td> | 945K |
| 代理商： | CAP1014-1-EZK |
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Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
SMSC CAP1014
53
Revision 1.64 (01-15-09)
DATASHEET
5.24
Sensor Threshold Registers
The Sensor Threshold registers store the delta threshold that is used to determine if a touch has been
detected. When a touch occurs, the input signal of the corresponding sensor changes due to the
capacitance associated with a touch. If the sensor input change exceeds the threshold settings, then
a touch is detected.
When the BUT_LD_TH bit is set (see Section 5.23 - bit 7), writing data to the Sensor 1 Threshold
register will update all of the button threshold registers (31h - 36h inclusive).
When the GP_LD_TH bit is set (see Section 5.23 - bit 6), writing data to the Sensor 1 Threshold
register (30h) will update the Group Threshold register (37h). Individual button registers may be
updated independently of the Sensor 1 Threshold settings.
5.25
Button Noise Threshold Registers
The Button Noise Threshold registers control the value of a secondary internal threshold to detect
noise and improve the automatic recalibration routine. If a Capacitive Touch Sensor output exceeds
the Button Noise Threshold but does not exceed the sensor threshold, then it is determined to be
caused by a noise spike. That sample is not used by the automatic re-calibration routine.
Table 5.35 Sensor Threshold Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
30h
R/W
Sensor 1
Threshold
-64
32
16
8
4
2
1
40h
31h
R/W
Sensor 2
Threshold
-64
32
16
8
4
2
1
40h
32h
R/W
Sensor 3
Threshold
-64
32
16
8
4
2
1
40h
33h
R/W
Sensor 4
Threshold
-64
32
16
8
4
2
1
40h
34h
R/W
Sensor 5
Threshold
-64
32
16
8
4
2
1
40h
35h
R/W
Sensor 6
Threshold
-64
32
16
8
4
2
1
40h
36h
R/W
Sensor 7
Threshold
-64
32
16
8
4
2
1
40h
37h
R/W
Group
Threshold
-64
32
16
8
4
2
1
40h
Table 5.36 Button Noise Threshold Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
38h
R/W
Button Noise
Threshold 1
CS4_BN_TH
[1:0]
CS3_BN_TH
[1:0]
CS2_BN_TH
[1:0]
CS1_BN_TH
[1:0]
55h
39h
R/W
Button Noise
Threshold 2
GR_BN_TH
[1:0]
CS7_BN_TH
[1:0]
CS6_BN_TH
[1:0]
CS5_BN_TH
[1:0]
55h
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAP1014-1-EZK-TR | 制造商:SMSC 制造商全稱:SMSC 功能描述:Multiple Channel Capacitive Touch Sensor and LED Driver |
| CAP1014-2-EZK-TR | 制造商:SMSC 制造商全稱:SMSC 功能描述:Multiple Channel Capacitive Touch Sensor and LED Driver |
| CAP1026 | 制造商:SMSC 制造商全稱:SMSC 功能描述:6 Channel Capacitive Touch Sensor with 2 LED Drivers |
| CAP1026-1-AP-TR | 制造商:SMSC 制造商全稱:SMSC 功能描述:6 Channel Capacitive Touch Sensor with 2 LED Drivers |
| CAP1028 | 制造商:SMSC 制造商全稱:SMSC 功能描述:8 Channel Capacitive Touch Sensor with 2 LED Drivers |
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