Microchip ATMXT144UD-SL Bedienungsanleitung
Microchip
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ATMXT144UD-SL
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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 V
PP
between 1 Hz and 1 kHz sinusoidal
waveform (no touches)
- Up to 20 V
PP
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
•I
2
C 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: –40C to +85C (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
17
1615
18
19 20
24
23
2221
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
Produktspezifikationen
| Marke: | Microchip |
| Kategorie: | Nicht kategorisiert |
| Modell: | ATMXT144UD-SL |
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