The SX8633 is an ultra low power, fully integrated 12-channel solution for capacitive touch-buttons and proximity detection applications.
Unlike many capacitive touch solutions, the SX8633 features dedicated capacitive sense inputs (that requires no external components) in addition to 8 general purpose I/O ports (GPIO). Each GPIO is typically configured as LED driver with independent PWM source for enhanced lighting control such as intensity and fading.
Features:
- Complete twelve Sensors Capacitive Touch Controller for Buttons
- Pre-configured for eight Buttons
- Eight LED Drivers with Individual Intensity, Fading Control and Autolight Mode
- 256 steps PWM Linear and Logarithmic control
- Proximity Sensing up to several centimetres
- Extremely Low Power Optimized for Portable Application
- 8 uA (typ) in Sleep Mode
- 80 uA (typ) in Doze Mode (Scanning Period 195 ms)
- 220 uA (typ) in Active Mode (Scanning Period 30 ms)
- Programmable Scanning Period from 15 to 1500 ms
- Auto Offset Compensation
- Eliminates False Triggers due to Environmental
- Factors (Temperature, Humidity)
- Initiated on Power-up and Configurable Intervals
- Multi-Time In-Field Programmable Firmware Parameters for Ultimate Flexibility
- On-chip user programmable memory for fast, self contained start-up
- "Smart" Wake-up Sequence for Easy Activation from Doze
- No External Components per Sensor Input
- Internal Clock Requires No External Components
- Differential Sensor Sampling for Reduced EMI
- 400 KHz Fast-Mode I²C Interface with Interrupt
- -40 to +85 °C Operation
Applications:
- Notebook/Netbook/Portable/Handheld computers
- Cell phones, PDAs
- Consumer Products, Instrumentation, Automotive
- Mechanical Button Replacement