IT7220: Low Power Cap. Touch Button Controller

The IT7220 is a 4-channel self-capacitive touch controller with best in signal-to-noise ratio and power consumption. With high performance capacitance-to-digital converter (CDC), it can implement functions such as buttons, and scroll bars.

The IT7220 provides a post-processing with CDC, and it can automatically calibrate and compensate the front-end CDC values for environmental changes. The chip supports one slider hardware engine and one gesture detect engine.

The IT7220 supports one I²C compatible interface to communicate with the host. Through this interface, the host can program the internal controlled registers to configure this chip to meet users’ requirements. The chip supports one interrupt output indicated that the CDC value exceeded the user’s programming contact threshold level.

The IT7220 is available in 12-pin XDFN package. It operates with only one 1.7V~3.6V power supply

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PART NO	PACKAGE TYPE	DESCRIPTION	FLASH SUPPORT

Support 3/4 channel Slider Function

- Slider resolution 128 levels

Gesture flick and tap function

I2C Compatible Interface

- Compliant to I2C specification v2.1

- Supports slave device only

- Supports standard and fast mode

- 7-bit device addressing mode

Operation Power

- 1.7V-3.6V

Low Power Consumption

- Low Power (LP) mode (1~4 Keys @ 6 frame/sec): < 3uA

NO	RELEASE DATE	TITLE	DOWNLOAD

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IT7220: Low Power Cap. Touch Button Controller