fma1127 Fujitsu Microelectronics, Inc., fma1127 Datasheet
fma1127
Manufacturer Part Number
fma1127
Description
Touch Sensor Controller
Manufacturer
Fujitsu Microelectronics, Inc.
Datasheet
1.FMA1127.pdf
(2 pages)
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FMA1127
Manufacturer:
HYNIX
Quantity:
200
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Part Number:
fma1127DC_40N
Manufacturer:
FUJITSU
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FMA1127
Touch Sensor Controller
Description
Features
The FMA1127 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. It includes touch sensor technology that
compares reference and sensor input impedances to detect touch,
all in digital domain.
Its programmability increases design flexibility and gives better
performance and stability for a broad range of applications. The
FMA1127’s Automatic Impedance Calibration (AIC™) function
can be easily configured to support different sensitivities for
individual channels independently as well as to change values of
parameters such as calibration intervals. AIC may also be
temporarily paused and resumed by a host MCU.
• Patented full-digital architecture
• Supports 12 input channels (40QFN and 30SSOP) or 9 input
• Programmable registers to characterize applications
• I 2 C interface with the host MCU
• Configurable Automatic Impedance Calibration (AIC™ )
• Two types of interrupts (GINT for general purpose and
channels (32QFN and 24SSOP) or 6 input channels
(24QFN and 20SSOP)
TINT for touch detection)
FMA1127
Fujitsu
• 8-bit resolution of touch strength data (256 steps)
• Three different modes for Adjacent Pattern Interference
• Configurable DIO pins as direct touch outputs, extended
• Beep generation for tactile feeling
• Idle and Sleep modes for power saving
• De-bounced touch outputs
Among the many features of the FMA1127 touch sensor
controller, is the Adjacent Pattern Interference Suppression
(APIS™) which acts as a filter to eliminate adjacent key or
pattern interference. The FMA1127 also gives touch-strength
output in addition to touch on/off output. There are a number of
general-purpose DIOs depending on the package type that can be
configured and programmed to meet customers’ specific needs. This
gives customers greater flexibility and value.
The FMA1127 comes in various package types to support different
numbers of input channels and DIOs.
The FMA1127 touch sensor controller is developed and owned by
ATLab Inc., South Korea, and is distributed by Fujitsu
Microelectronics America, Inc.
Touch Pad System Model
Zref
Zin
Suppression (APIS™)
GPIOs, or external interrupt inputs.
Touch Pad
Principle of Touch Detection
Impendance
Detection
Change
Zin
Zref
Impedance Status
Detected
Detected
Contact
Touch
Finger
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fma1127 Summary of contents
Page 1
... DIOs depending on the package type that can be configured and programmed to meet customers’ specific needs. This gives customers greater flexibility and value. The FMA1127 comes in various package types to support different numbers of input channels and DIOs. The FMA1127 touch sensor controller is developed and owned by ATLab Inc ...
Page 2
... Package Type FMA1127DA-40N 40QFN FMA1127DA-32N 32QFN FMA1127DA-24N 24QFN FMA1127DA-30S 30SSOP FMA1127DA-24S 24SSOP FMA1127DA-20S 20SSOP FUJITSU MICROELECTRONICS AMERICA, INC. Corporate Headquarters 1250 E. Arques Avenue, M/S 333, Sunnyvale, CA 94085-5401 Tel: (800) 866-8608 Fax: (408) 737-5999 E-mail: inquiry@fma.fujitsu.com Web Site: http://us.fujitsu.com/micro • Home appliances and consumer electronic products • ...