3-Key Capacitive Touch Controller Integrated with 3-LED Driver

AW9233 integrates 3 capacitive sensor and a SRAM program-controlled 3 LED driver. By special programming and register configuring, the touch or gesture can trigger predefined lighting program to generate funny and complicated LED effect, without the aid of external MCU. The  capacitive  sensor  takes  advantage  of advanced  Sigma-delta  capacitance  digital conversion technology to achieve high sensitivity and anti-noise capacitance detection. With internal DSP algorithm, the touch and gesture event can be detected and reported in status register and external interrupt pin. 3 LED driver uses common anode current source and PWM dimming. Each LED is 8-level driver current selectable with dimming independently controlled  by  external  MCU  or  internal 256word*16bit SRAM program. Compatible I2C interface of 400kHz fast mode is provided, the package is CSP1.59mm×1.75mm× 0.57mm-16L. It requires only 3.0V-4.5V single power supply.


l  3 Capacitive key with sensitivity configurable

l  RF Noise Filter

l  Tap Gesture detection (Single/Double/Triple click and slide gesture)

l  Automatic Calibration for Environmental Change

l  Intrinsic Capacitance Compensation

l  8-level LED Maximum Current for each LED,max 24.5mA

l  256-level Linear/Logarithmic PWM Dimming,9 bits PWM resolution

l  Capacitive Touch status trigger internal LED program to create complicated touch feedback

l  Compatible I2C Interface, VIO: 1.8V ~ 3.3V

l  I2C address: 0x2C/0x2D

l  Single Power Supply, Voltage Range: 3.0V ~4.5V

l  CSP1.59mm×1.75mm×0.57mm-16L Package


Application note

Product name Type Size Download
AW9233CSR PDF 3.2M
  • Touch Channel
    LED Output
    Gesture Detection
    Istandby (typ.) (μΑ)
    Power Supply (V)
    Package (mm)
  • AW9233CSR

    WLCSP 1.59×1.75-16B
Package form Number of pins Long(mm) Width(mm) Thick(mm) Pin spacing(mm) Heat sink Package drawing
WLCSP 1.75×1.59×0.57-16B 16 1.75 1.59 0.57 0.4 N
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