Microchip ATMXT2912TD-MK Manual

Microchip Ikke kategoriseret ATMXT2912TD-MK

Læs gratis den danske manual til Microchip ATMXT2912TD-MK (12 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 16 personer og har en gennemsnitlig bedømmelse på 4.5 stjerner ud af 8.5 anmeldelser. Har du et spørgsmål om Microchip ATMXT2912TD-MK, eller vil du spørge andre brugere om produktet?

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 2022 Microchip Technology Inc. and its subsidiaries Product Brief DS40002426A-page 1

mXT2912TD-ATMK/

mXT2912TD-ABMK 1.0

Description

The mXT2912TD-ATMK/mXT2912TD-ABMK 1.0 uses a unique charge-transfer acquisition engine to implement Microchip’s

patented capacitive sensing method. Coupled with a state-of-the-art CPU, the entire touchscreen sensing solution can measure,

classify and track a number of individual finger touches with a high degree of accuracy in the shortest response time.

Automotive Applications

Microchip/Panasonic Knob Technology

• Detect and report the detent (click position) of specific

capacitive mechanical rotary encoders (knobs)

mounted on the touch panel

• Support for up to 4 Knob instances with different size

and number of detents (64 detents maximum)

• Position and size of each knob is individually

configurable. No specific touch pattern required

• Report relative detent position as well as the direction

of rotation

• Configurable suppression area around the knob to

suppress accidental touches from fingers holding the

knob

• Optional push/release function

• Design guidance, tools and other services available

from Microchip and Panasonic

maXTouch® Adaptive Sensing Technology

Keys

Touch Sensor Technology

• Discrete/out-cell support including glass and PET film-

based sensors

• On-cell/touch-on display support including TFT, LCD

(ITPS, IPS) and OLED

• Synchronization with display refresh timing capability

• Support for standard (for example, Diamond) and

proprietary sensor patterns (review of designs by

Microchip or a Microchip-qualified touch sensor

module partner is recommended)

Front Panel Material and Design

• Support for non-rectangular sensor designs (for

example, circular, rounded or with cutouts)

Touch Performance

• Moisture/Water Compensation

- No false touch with condensation

• P2P mutual capacitance measurements supported for

extra sensitive multi-touch sensing

• Noise suppression technology to combat ambient and

power-line noise

• Burst Frequency

- Flexible and dynamic Tx burst frequency selection

to reduce EMC disturbance

- Controlled Tx burst frequency drift over process

and temperature range

• AEC-Q100 Qualified

• CISPR 25 compliant

• Up to 41 X (transmit) lines and 71 Y (receive) lines for

use by a touchscreen and/or 2 key arrays

• A maximum of 2911 nodes can be allocated to the

touch sensor

• Touchscreen size of 19.25 inches (16:9 aspect ratio),

assuming a sensor electrode pitch of 6 mm. The

achievable touchscreen size depends on the knob

requirements

• Multiple touch support with up to 16 concurrent

touches tracked in real time depending on the number

of knobs implemented

• Up to 32 nodes can be allocated as mutual

capacitance sensor keys in addition to the

touchscreen, defined as 2 key arrays (subject to

availability of X and Y lines and other configurations)

• Adjacent Key Suppression (AKS) technology is

supported for false key touch prevention

• Works with PET or glass (dependent on sensor size,

touch size, configuration, stack-up, and dimension and

number of detents of the knob)

• Configuration and stack-up to be approved by

Microchip or a Microchip-qualified touch sensor

module partner

- Up to 240 VPP between 1 Hz and 1 kHz sinusoidal

waveform (no touches)

- Up to 20 VPP between 1 kHz and 1 MHz

sinusoidal waveform

maXTouch 2911-node Touchscreen Controller

Product Brief

mXT2912TD-ATMK/mXT2912TD-ABMK 1.0

DS40002426A-page 2 Product Brief  2022 Microchip Technology Inc. and its subsidiaries

• Scan Speed

- Typical report rate for 10 touches 100 Hz (subject to configuration)

- Initial touch latency <20 ms for first touch from idle (subject to configuration)

- Panasonic Knob rotation speed maximum 80 rpm

- Configurable for power and speed optimization

• Touch panel failure detection

- Automatic touch sensor diagnostics during run time to support the implementation of safety critical features

- Diagnostics reported using dedicated output pin or by standard Object Protocol messages

- Configurable test limits

Enhanced Algorithms

• Dedicated drift calibration algorithm for the knob locations

• Lens bending algorithms to remove display noise

• Touch suppression algorithms to remove unintentional large touches

• Palm Recovery Algorithm for quick restoration to normal state

Data Store

• 60-byte CRC-checksummed data area for use as a run-time Product Data Store Area

• Up to 64 bytes of user’s custom data (not CRC checksummed)

Power Saving

• Programmable timeout for automatic transition from Active to Idle state

• Pipelined analog sensing detection and digital processing to optimize system power efficiency

Application Interfaces

Power Supply

Package

• 176-lead LQFP 24 × 24 × 1.4 mm, 0.5 mm pitch

Operating Temperature

Design Services

• Review of device configuration, stack-up and sensor patterns

• Specific design and tuning tools available as maXTouch Studio plug-ins

• Client interface for main communication with the device. Can be one of:

- I2C interface, with support for Standard mode (up to 100 kHz), Fast mode (up to 400 kHz),

Fast-mode Plus (up to 1 MHz)

- SPI interface (up to 8 MHz)

• Interrupt to indicate when a message is available

• Additional SPI Debug Interface to read the raw data for tuning and debugging purposes

• Digital (Vdd) 3.3V nominal

• Digital I/O (VddIO) 3.3V nominal

• Analog (AVdd) 3.3V nominal

• High voltage external X line drive (XVdd) up to 8.5V

• ATMXT2912TD-ATMK: –40C to +85C (Grade 3)

• ATMXT2912TD-ABMK: –40C to +105C (Grade 2)

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	ATMXT2912TD-MK

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