Instrukcja obsługi Microchip ATMXT144UD-SL


Przeczytaj poniżej 📖 instrukcję obsługi w języku polskim dla Microchip ATMXT144UD-SL (12 stron) w kategorii Niesklasyfikowane. Ta instrukcja była pomocna dla 2 osób i została oceniona przez 2 użytkowników na średnio 4.5 gwiazdek

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2022 Microchip Technology Inc. and its subsidiaries Product Brief DS40002447A-page 1
mXT144UD-AMTSL/
mXT144UD-AMBSL 1.0
Description
The mXT144UD-AMxSL 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 sensor sensing solution can measure, classify and track a
number of individual finger touches with a high degree of accuracy in the shortest response time. The mXT144UD-AMxSL 1.0
allows for both mutual and self capacitance measurements, with the self capacitance measurements being used to augment the
mutual capacitance measurements to produce reliable touch information.
Automotive Applications
maXTouch® Adaptive Sensing Technology
Keys
Touch Sensor Technology
On-cell/touch-on display support including OLED, TFT
and LCD (ITPS, IPS)
Discrete/out-cell support including glass and PET film-
based sensors
Synchronization with display refresh timing capability
Support for slider touch sensor patterns designed
following Microchip guidelines (review of designs by
Microchip or a Microchip-qualified touch sensor
module partner is recommended)
Front Panel Material
Touch Performance
Moisture/Water Compensation
- No false touch with condensation or water drop
up to 22 mm diameter
- One-finger tracking with condensation or water
drop up to 22 mm diameter
Mutual capacitance and self capacitance
measurements supported for robust touch detection
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
- Configurable Tx waveform shaping to reduce
emissions
Scan Speed
- Typical report rate for 5 touches 120 Hz (subject
to configuration)
- Initial touch latency <6 ms for first touch from idle
(subject to configuration)
AEC-Q100 Qualified
CISPR 25 compliant (for both mutual and self
capacitance measurements)
Up to 12 X (transmit) lines and 12 Y (receive) lines for
use by a slider and/or key array
A maximum of 144 nodes can be allocated to the
touch sensor
Slider length 936 mm, assuming a sensor electrode
pitch of 6.5 mm. Other lengths are possible with
different electrode pitches and appropriate sensor
material
Multiple touch support with up to 10 concurrent
touches tracked in real time
Up to 16 nodes can be allocated as mutual
capacitance sensor keys in addition to the slider,
defined as 1 key array (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, including curved profiles
(configuration and stack-up to be approved by
Microchip or a Microchip-qualified touch sensor
module partner)
10 mm glass (or 5 mm PMMA) with bare finger
(dependent on sensor size, touch size, configuration
and stack-up)
6 mm glass (or 3 mm PMMA) with multi-nger 5 mm
glove (2.7 mm PMMA equivalent) (dependent on
sensor size, touch size, configuration and stack-up)
- 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 144-node Touch Slider Controller
Product Brief
mXT144UD-AMxSL 1.0
DS40002447A-page 2 Product Brief 2022 Microchip Technology Inc. and its subsidiaries
- 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
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
64-byte data area for 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
Low power idle mode reduces measurements to the minimum required to detect touches, at which point the
device enters active mode to perform full measurement and touch processing
Application Interfaces
Power Supply
Package
56-pin VQFN 7 × 7 × 0.9 mm, 0.4 mm pitch, with exposed pad and stepped wettable flanks
Operating Temperature
Design Services
Review of device configuration, stack-up and sensor patterns
• I2C client interface for main communication with the device, with support for Standard mode (up to 100 kHz),
Fast mode (up to 400 kHz), Fast-mode Plus (up to 1 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 internal X line drive (XVdd) 6.6V with internal voltage pump
mXT144UD-AMTSL: –40C to +85C (Grade 3)
mXT144UD-AMBSL: –40 C to +105 C (Grade 2)
mXT144UD-AMxSL 1.0
2022 Microchip Technology Inc. and its subsidiaries Product Brief DS40002447A-page 3
PIN CONFIGURATION
56-pin VQFN
39
40
42
41
38
37
36
35
34
33
32
31
30
29
56 55 54 53
49
50
5152 43
44
48 47 46 45
1
2
3
4
5
6
7
8
9
10
11
12
13
14
171615
18
19 20 24232221 25 26 27 28
GND
Top View
X0
X1
GND
DS0
X11
X10
X9
X8
X7
X6
X5
X4
X3
X2
EXTCAP0
VDD
VDDCORE
VDDIO
TEST
SDA
SCL
RESET
COMMSEL/DBG_CLK
GPIO0/DBG_DATA
CHG
SYNC/GPIO1
GPIO2
GPIO3
XVDD
RESV11
Y11
RESV10
Y10
RESV9
Y9
RESV8
Y8
RESV7
Y7
RESV6
Y6
EXTCAP1
GPIO4
RESV5
Y5
RESV4
Y4
RESV3
Y3
RESV2
Y2
RESV1
Y1
RESV0
Y0
AVDD


Specyfikacje produktu

Marka: Microchip
Kategoria: Niesklasyfikowane
Model: ATMXT144UD-SL

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