Microchip CAP1208 Bruksanvisning
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2013-2015 Microchip Technology Inc.DS00001570C-page 1
General Description
The CAP1208 is a multiple channel capacitive touch
sensor controller. It containseight (8) individual capac-
itive touch sensor inputs with programmable sensitivity
for use in touch sensor applications. Each sensor input
is calibrated to compensate for system parasitic capac-
itance and automatically recalibrated to compensate
for gradual environmental changes.
The CAP1208 includes Multiple Pattern Touch recogni-
tion that allows the user to select a specific set of but-
tons to be touched simultaneously. If this pattern is
detected, a status bit is set and an interrupt is gener-
ated.
The CAP1208 has Active and Standby states, each
with its own sensor input configuration controls. Power
consumption in the Standby state is dependent on the
number of sensor inputs enabled as well as averaging,
sampling time, and cycle time. Deep Sleep is the low-
est power state available, drawing 5μA (typical) of cur-
rent. In this state, no sensor inputs are active, and
communications will wake the device.
Applications
•Desktop and Notebook PCs
•LCD Monitors
•Consumer Electronics
• Appliances
Features
•Eight (8) Capacitive Touch Sensor Inputs
-Programmable sensitivity
-Automatic recalibration
-Calibrates for parasitic capacitance
-Individual thresholds for each button
•Multiple Button Pattern Detection
•Power Button Support
•Press and Hold Feature for Volume-like Applica-
tions
•3.3V or 5V Supply
•Analog Filtering for System Noise Sources
•RF Detection and Avoidance Filters
•Digital EMI Blocker
•8kV ESD Rating on All Pins (HBM)
•Low Power Operation
- 5μA quiescent current in Deep Sleep
- 50μA quiescent current in Standby (1 sensor
input monitored)
-Samples one or more channels in Standby
•SMBus / I2C Compliant Communication Interface
•Available in a 16-pin 3mm x 3mm QFN RoHS
compliant package
•Available in a 14-pin SOIC RoHS compliant pack-
age
CAP1208
8-Channel Capacitive Touch Sensor
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | CAP1208 |
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