ATMXT144UD-A Series

maXTouch Touchscreen Controller

Catalog

maXTouch Touchscreen Controller

Part	Voltage - Supply	Grade	Qualification	Voltage Reference	Interface	Operating Temperature [Min]	Operating Temperature [Max]	Supplier Device Package	Mounting Type	Touchscreen	Package / Case	Current - Supply	Resolution (Bits)	Utilized IC / Part	Supplied Contents	Function	Type
Microchip Technology ATMXT144UD-AMBI2CVA1	3.3 V	Automotive	AEC-Q100	Internal	I2C SPI	-40 °C	105 ░C	56-VQFN (7x7)	Surface Mount Wettable Flank	2 Wire Capacitive	56-VFQFN Exposed Pad
Microchip Technology ATMXT144UD-AMTSPIVA1	3.3 V	Automotive	AEC-Q100	Internal	I2C SPI	-40 °C	85 °C	56-VQFN (7x7)	Surface Mount Wettable Flank	2 Wire Capacitive	56-VFQFN Exposed Pad
Microchip Technology ATMXT144U-MAU025	3.3 V			Internal	I2C SPI	-40 °C	85 °C	38-XQFN (4x4)	Surface Mount	2 Wire Capacitive	38-XFQFN Exposed Pad	12.89 mA	12 b
Microchip Technology ATMXT144UD-AMTRI2CVA1	3.3 V	Automotive	AEC-Q100	Internal	I2C SPI	-40 °C	85 °C	56-VQFN (7x7)	Surface Mount Wettable Flank	2 Wire Capacitive	56-VFQFN Exposed Pad
Microchip Technology ATMXT144U-DEV-PCB														mXT144U	Board(s)	Touch Screen Controller	Interface
Microchip Technology ATMXT144UD-AMBSPIVA1	3.3 V	Automotive	AEC-Q100	Internal	I2C SPI	-40 °C	105 ░C	56-VQFN (7x7)	Surface Mount Wettable Flank	2 Wire Capacitive	56-VFQFN Exposed Pad
Microchip Technology ATMXT144UD-AMBRSPIVA1	3.3 V	Automotive	AEC-Q100	Internal	I2C SPI	-40 °C	105 ░C	56-VQFN (7x7)	Surface Mount Wettable Flank	2 Wire Capacitive	56-VFQFN Exposed Pad
Microchip Technology ATMXT144UD-AMBI2CVAO	3.3 V				I2C SPI	-40 °C	105 ░C	56-VQFN (7x7)	Surface Mount Wettable Flank	2 Wire Capacitive	56-VFQFN Exposed Pad
Microchip Technology ATMXT144UD-AMTSPIVAO	3.3 V				I2C SPI	-40 °C	85 °C	56-VQFN (7x7)	Surface Mount Wettable Flank	2 Wire Capacitive	56-VFQFN Exposed Pad

Catalog

maXTouch Touchscreen Controller

Key Features

• * Smart surfaces and multi-function displays up to 4.3"

• * Multiple thick glove (5mm) touches

• * Thick lens/overlay (up to 10mm glass equivalent)

• * Package: VQFN-56 (7x7mm)

• * Less than 50uA low power wake-up anywhere on the touch surface mode

• * [Comprehensive evaluaton kit including touch sensor](//www.microchip.com/DevelopmentTools/ProductDetails/PartNO/EV92X77A)

• * 1 and 2 touch embedded finger gestures

• * Supports up to 10 concurrent touches in real time with touch area reporting

• * Up to 32 touch keys

• * Superior moisture performance

• * Communication via a I2C serial interface up to 1MHz or SPI interface up to 8MHz

• * Internal voltage doubler option to increase signal to noise ratio (SNR)

Description

The ATMXT144UD-A is the smallest Automotive qualified touchscreen controller in a VQFN-56 package with wettable flanks, aimed at smart surfaces and multi-function displays up to 4.3". Excellent intrinsic SNR of this latest maXTouch family enables detection and tracking of multi-finger thick gloves through a wide variety of overlay materials and thicknesses, even in the presence of moisture. This SNR combined with a high acquisition speed provides a fast, accurate and reliable a touch position. The ATMXT144UD-A incorporates a new low power mode for wake-up on touch, this enable the system to go into a wait-for-touch mode while consuming less than 50uA and to wake-up by a touch event anywhere on the touch surface. This technology also enables adaptive touch utilizing self-capacitance and mutual-capacitance measurements so all touches are recognized and false touch detections are avoided. The controllers also incorporate a new self and sensor diagnostic function, which constantly monitors the integrity of the touch system. The new ATMXT144UD-A device brings these smart diagnostic features in support of the Automotive Safety Integrity Level as specified in ISO26262. Please contact your local Microchip sales office for pricing information and to place an order.