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參數(shù)資料
| 型號： | CAP1014-1-EZK |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 模擬信號調(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)： | 65/73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
Revision 1.64 (01-15-09)
68
SMSC CAP1014
DATASHEET
5.40
LED Direct Ramp Rates Register
The LED Direct Ramp Rates register control the rising and falling edge time of an LED that is
configured to operate in Direct mode and is linked to a Capacitive Touch sensor. The rising edge time
corresponds to the amount of time the LED takes to transition from its minimum duty cycle to its
maximum duty cycle. Conversely, the falling edge time corresponds to the amount of time that the LED
takes to transition from its maximum duty cycle to its minimum duty cycle.
Bits 5 - 3 - RISE_RATE[2:0] - Determines the rising edge time of an LED when it transitions from its
minimum drive state to its maximum drive state as shown in Table 5.60.
Bits 2 - 0 - FALL_RATE[2:0] - Determines the falling edge time of an LED when it transitions from its
maximum drive state to its minimum drive state as shown in Table 5.60.
5.41
LED Off Delay Register
The LED Off Delay register determines the amount of time an LED In direct mode remains active after
it is no longer actuated (such as after a release has been detected or the drive state has been
changed). This register is only used if the LED is linked to a Capacitive Touch sensor.
Table 5.59 LED Direct Ramp Rates Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
94h
R/W
LED Direct
Ramp Rates
-
RISE_RATE[2:0]
FALL_RATE[2:0]
00h
Table 5.60 Rise / Fall Rate Cycle Decode
RISE/FALL_RATE [2:0]
RISE / FALL TIME (TRISE / TFALL)
21
0
00
0
1
250ms
0
1
0
500ms
1
750ms
10
0
1s
10
1
1.25s
11
0
1.5s
11
1
2s
Table 5.61 LED Off Delay Register
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
95h
R/W
LED Off Delay
Register
-
DIR_OFF_DLY [2:0]
00h
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| 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 |
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| 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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