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FMA1125DC fiches techniques PDF

Fujitsu - Touch Sensor Controller

Numéro de référence FMA1125DC
Description Touch Sensor Controller
Fabricant Fujitsu 
Logo Fujitsu 





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FMA1125DC fiche technique
FMA1125DC
Touch Sensor Controller
Overview
The FMA1125DC is a low-power, compact, flexible touch sensor
controller that converts capacitance generated between the
human body and a conductive touch pad to digital data without
any analog signal processing.
Its programmability provides design flexibility, high performance
and stability for a broad range of applications. The
FMA1125DC’s AIC™ (Automatic Impedance Calibration)
function can be easily configured to support different sensitivities
for individual channels independently as well as to change values
of parameters such as the calibration interval. AICTM may also be
temporarily paused and resumed by a host MCU.
Among the many features of the FMA1125DC is APIS™
(Adjacent Pattern Interference Suppression). APIS is a filtering
function that eliminates adjacent key or pattern interference. The
FMA1125DC also gives touch-strength output in addition to
touch on/off output. There are a number of DIOs depending on
the package type that can be configured and programmed to meet
specific requirements, giving customers greater flexibility and
value.
The FMA1125DC comes with various package types to support
different numbers of input channels and DIOs.
The FMA1125DC touch sensor controller is developed and
owned by ATLab Inc., South Korea, and is distributed by
Fujitsu Microelectronics America, Inc.
Touch Pad
Zin Impedance
Change
Zref Detection
Zin < Zref
Touch Pad System Model
Touch Pad
Zin Impedance
Change
Zref Detection
Touch Pad System Model
Zin
Zref
Impedance Status
Ztouch
Zin
Zref
Touch
Detected
Impedance Status
Features
• Patented fully digital architecture
• Extremely low power consumption (100μA in active mode)
• Supports 8 input channels (24QFN, 24SSOP, 24SOP)
or 6 input channels (16QFN,16SOP)
• Programmable registers to characterize applications
• I2C interface with the host MCU
• Configurable Touch Input Channels as extended DIOs
• 6-bit resolution of LED dimming control via DIO pins
• Configurable AIC™ (Automatic Impedance Calibration)
• Two types of interrupts (GINT for general purpose and TINT
for touch detection)
• 8-bit resolution of touch strength data (256 steps)
• Three different modes for APIS™ (Adjacent Pattern
Interference Suppression)
• Configurable DIO pins as direct touch outputs, extended
GPIOs or external interrupt inputs
• Idle and Sleep modes for power saving
• De-bounced touch outputs
Applications
• Portable devices such as PDAs, cellular phones, MP3 players,
remote controllers, and other integrated input devices
• Home appliances and consumer electronic products
• Computer input devices such as mice and keyboards
Confidential
Free Datasheet http://www.datasheet-pdf.com/

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