CAP1166-1-BP-TR-DCC

Overview

The CAP1166-1-BP-TR-DCC is a six-channel capacitive touch sensor controller with integrated LED drivers, manufactured by Microchip Technology. It operates on a 3.0V to 3.6V supply and features six programmable touch inputs with automatic recalibration. The device includes six open-drain or push-pull LED drivers capable of blinking, breathing, and dimming controls. Communication interfaces include SMBus/I2C, SPI, and BC-Link, selected via the ADDR_COMM pin. Power states include Standby (50uA typical) and Deep Sleep (5uA typical). It supports proximity detection, multiple pattern recognition, and press-and-hold features.

Feature Summary

• Six capacitive touch sensor inputs with programmable sensitivity and automatic environmental recalibration
• Six LED driver outputs supporting full-on/off, variable rate blinking, dimness, and breathing modes
• Multiple communication protocols including SMBus/I2C, SPI, and proprietary BC-Link
• Advanced touch features including proximity detection, multiple button pattern recognition, and press-and-hold functionality

Applications

• Desktop and notebook PCs
• LCD monitors
• Consumer electronics
• Appliances

Procurement Notes

Verify the complete part number against official Microchip documentation to ensure correct package type and communication interface configuration. Confirm that the ordering suffix matches the required reel quantity and specific variant options. Cross-reference the datasheet revision history for any errata or operational updates relevant to the silicon revision.

Selection Notes

Select this component when a multi-channel touch solution with integrated lighting control is required. Ensure the host system supports one of the available communication protocols: SMBus, I2C, SPI, or BC-Link. Verify that the power supply voltage falls within the 3.0V to 3.6V range and that the application benefits from the low-power standby and deep sleep modes.

Part Context

The CAP1166 belongs to Microchip's RightTouch family of capacitive touch controllers. It is designed for applications requiring multiple touch inputs and visual feedback through integrated LEDs. The device simplifies design by combining sensing and driving capabilities in a single IC, reducing component count and board space compared to discrete solutions.

Replacement Considerations

Consult Microchip documentation for direct substitutes. Verify compatibility regarding pinout, communication protocol support, and power consumption specifications before replacing existing components in a design.

FAQ

How is the communication protocol selected on the CAP1166?

The communication protocol is determined by the resistor connected between the ADDR_COMM pin and ground. Different resistance values select between SMBus/I2C, SPI normal mode, SPI bi-directional mode, or BC-Link.

What are the power consumption levels for the CAP1166?

In Standby mode with one sensor monitored, the quiescent current is typically 50uA. In Deep Sleep mode, where no sensors are active, the current drops to typically 5uA.

Can the LED drivers be controlled independently of the touch sensors?

Yes, each of the six LED drivers can be individually controlled via the host controller through the communication interface, even if they are not linked to a touch sensor input.