sx8661 Semtech Corporation, sx8661 Datasheet - Page 51

• Manufacturer Part Number: sx8661
• Description: Low Power, Capacitive Button Touch And Proximity Controller 8 Sensors With Led Drivers And Analog Output
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
5.4 Proximity Parameters
Revision v3.2, January 2011
Proximity Parameters
Address
0x1C
0x1D
0x1E
0x1F
Name
ProxIncDecTime
ProxCfg
ProxDebounce
ProxHysteresis
Bits
7:4
3:0
7:4
3:2
1
0
7:4
3:2
1:0
7:0
Description
Defines the time between each increment.
0x0: instantaneous
0x1: 0.5ms (default)
0x2: 1ms
…
0xF: 7.5ms
Defines the time between each decrement.
0x0: instantaneous
0x1: 0.5ms
0x2: 1ms
…
0x4: 2ms (default)
…
0xF: 7.5ms
Defines the delay between release and start of fading out.
0x0: instantaneous
0x1: 200 ms
0x2: 400 ms
0x3: 600ms
…
0xA: 2s
0xB: 4s (default)
…
0xF: 12s
Reserved (0x00)
Defines the fading increment factor.
0: intensity index incremented every increment time (default)
1: intensity index incremented every 16 increment times
Defines the fading decrement factor.
0: intensity index decremented every decrement time (default)
1: intensity index decremented every 16 decrement times
Reserved (0x00)
Defines the number of samples at the scan period for determining proximity release.
00 : no debounce, use incoming sample (default)
01 : 2 samples debounce
10 : 3 samples debounce
11 : 4 samples debounce
Defines the number of samples at the scan period for determining proximity detection.
00 : no debounce, use incoming sample (default)
01 : 2 samples debounce
10 : 3 samples debounce
11 : 4 samples debounce
Defines the proximity hysteresis corresponding to a percentage of the CAP0 threshold
(defined in Table 15).
0x00: 0%
0x01: 1%
…
0x0A: 10% (default)
…
0x64: 100%
Low Power, Capacitive Button Touch and Proximity Controller
© 2011 Semtech Corp.
51
(8 sensors) with LED Drivers and Analog Output
www.semtech.com
DATASHEET
SX8661