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FMA1127DA-30S Datasheet(PDF) 1 Page - Fujitsu Component Limited. |
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FMA1127DA-30S Datasheet(HTML) 1 Page - Fujitsu Component Limited. |
1 / 2 page Touch Pad Touch Detected Finger Contact Detected Zin Impendance Change Detection Principle of Touch Detection Touch Pad System Model Impedance Status Zref Zref Zin Fujitsu FMA1127 FMA1127 Touch Sensor Controller Description Features • Patented full-digital architecture • Supports 12 input channels (40QFN and 30SSOP) or 9 input channels (32QFN and 24SSOP) or 6 input channels (24QFN and 20SSOP) • Programmable registers to characterize applications •I2C interface with the host MCU • Configurable Automatic Impedance Calibration (AIC™ ) • 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 Adjacent Pattern Interference Suppression (APIS™) • Configurable DIO pins as direct touch outputs, extended GPIOs, or external interrupt inputs. • Beep generation for tactile feeling • Idle and Sleep modes for power saving • De-bounced touch outputs 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. 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. |
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