Technical data sheet for the Hynitron CST816S high‑performance capacitive touch controller.
The CST816S is a high‑performance self‑capacitive touch controller featuring a fast MCU core, integrated DSP, and support for up to 13 sensing channels. It provides single‑point gestures and true two‑point operation with low power consumption and high sensitivity.
The chip operates from 2.7 V to 3.6 V, offers I2C communication (10 kHz‑400 kHz), and includes low‑power modes such as dynamic, standby, and sleep. Detailed pin descriptions, electrical characteristics, and application design guidelines are provided. This manual is written in Chinese.
| Supply Voltage | 2.7‑3.6 V |
|---|---|
| Operating Temperature | -40 °C to +85 °C |
| Storage Temperature | -60 °C to +150 °C |
| Power Consumption (Dynamic Mode) | < 2.5 mA typical |
| Power Consumption (Standby Mode) | < 10 µA typical |
| Power Consumption (Sleep Mode) | < 5 µA typical |
| Supply Ripple | ≤ 50 mV |
| I2C Speed | 10 kHz‑400 kHz configurable |
| Number of Sensing Channels | 13 |
| Package | QFN 2.0 mm × 3 mm × 0.4 mm |
Typical power consumption in dynamic mode is less than 2.5 mA.
The CST816S supports up to 13 sensing channels.
It uses a standard I2C master/slave interface configurable from 10 kHz to 400 kHz.
The chip operates from 2.7 V to 3.6 V.