The TTP223 Touch Button Module is a capacitive touch switch module that detects touch input and provides digital output. Below is the structured product information:
Supply Voltage: 2.5V to 5.5V DC
Dissipation Power: Low power consumption
Trigger Setting Modes: Configurable via two solder jumpers (A and B)
Output Type: TTL digital signal
Module Size: Approx. 15mm x 11mm x 1mm (0.59" x 0.43" x 0.03")
Working voltage ranges from 2.0V to 5.5V.
At VDD=3V with no load, in low power mode (SLRFTB=1), the typical working current is 1.5µA, with a maximum of 3.0µA. In fast mode, the typical working current is 3.5µA, with a maximum of 7.0µA. With SLRFTB=0 at VDD=3V and no load, the typical working current in low power mode is 2.0µA, with a maximum of 4.0µA, while in fast mode, the typical value is 6.5µA, with a maximum of 13.0µA.
The longest response time is approximately 60 ms in fast mode, and the sensitivity is around 220 ms at VDD=3V in low power mode, which can be adjusted using an external capacitance (0~50pF).
The selection of two sampling lengths is controlled by the SLRFTB pin. Human touch detection is stable, making it a viable replacement for traditional direct switch keys. The LPMB pin allows switching between fast mode and low power mode, while the TOG pin provides the choice between direct mode and trigger mode. The Open Drain output mode is available via the OPDO pin, and the Q pin offers CMOS output.
Each output mode can be set to either high or low level using the AHLB pin. The MOTB pin provides a selection for a maximum output time of 100 seconds. The external power-on reset pin (RST pin) requires approximately 0.5 seconds for stabilization after power-on, during which all functions are disabled, and keys should not be touched. The system continuously performs self-calibration, and when no key is touched, the recalibration period is about 4.0 seconds.