SMSC CAP1014容性触摸传感和LED驱动方案

SMSC 公司的CAP1014是多路容性触摸传感器和LED驱动器,包含有14路单个的容性触摸传感器输入,有可编程的灵敏度,每个传感器还具有自动再校准功能. CAP1014还有11个低边LED驱动器,可用在消费类电子,台式电脑和笔记本电脑以及LCD监视器.本文介绍了CAP1014主要特性, 方框图和应用系统框图.

The CAP1014 is a multiple channel Capacitive Touch sensor and LED Driver.

The CAP1014 contains up to fourteen (14) individual Capacitive Touch sensor inputs with programmable sensitivity for use in touch button and slider switch applications. Each sensor also contains automatic recalibration with programmable time delays.

The CAP1014 also contains eleven (11) low side LED drivers that offer full-on / off, variable rate blinking, dimness controls, and breathing. Capacitive buttons can be linked to LED outputs

CAP1014主要特性:

Fourteen (14) Capacitive Touch Sensor inputs

— Programmable sensitivity

— High SNR allows for easy tuning

— Automatic recalibration

— Slider Acceleration Detection

— Slider positional detection

Low Power operation

— 100uA quiescent current in Deep Sleep

— 250uA quiescent current in Sleep mode while monitoring 1 or more buttons.

Alert to signal touch to host processor

User controlled reset

Low External Component Count

SMBus 2.0 compliant interface to change operating parameters to work in a wide variety of systems

— Block Read and Write function for quick tasking

Eleven (11) LED Driver outputs

— Programmable blink, breathe, and dimness controls

— 8 Configurable as GPIOs

— Buttons can be linked to LED responses

Developtment boards and software available

Available in 32-pin 5mm x 5mm QFN Lead-free RoHS Compliant package

CAP1014应用:

Consumer Electronics

Desktop and Notebook PC’s

LCD Monitors



图1.CAP1014方框图



图2.CAP1014应用系统框图