Microchip ATMXT2912TD-UW Bedienungsanleitung


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 2023 Microchip Technology Inc. and its subsidiaries Product Brief DS40002460A-page 1
mXT2912TD-AxUW 1.1
Description
The mXT2912TD-AxUW 1.1 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. The mXT2912TD-AxUW 1.1
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 and
LCD (ITPS, IPS)
• Discrete/out-cell support including glass and PET film-
based sensors
• 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 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
• AEC-Q100 Qualified
• CISPR 25 compliant (for both mutual and self
capacitance measurements)
• Microchip has patents related to the Ultrawide Touch
technology. The touch sensor, which will be developed
by the customer, its partners, and/or Microchip for
Ultrawide touch programs, can only be part of a touch
solution that incorporates a Microchip touchscreen
controller to implement the relevant functionality.
• Single ultrawide touchscreen up to 20 X lines by
142 Y lines, made up of 40 X by 71 Y in a multiplexed
arrangement (subject to configuration)
• Touchscreen size 34 inches (7:1 aspect ratio),
assuming a sensor electrode pitch of 6 mm. Other
sizes are possible with different electrode pitches and
appropriate sensor material. Other sizes are possible
with different electrode pitches and appropriate sensor
material
• Multiple touch support with up to 16 concurrent
touches tracked in real time
• 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, 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 2911-node Touchscreen Controller
Product Brief
mXT2912TD-AxUW 1.1
DS40002460A-page 2 Product Brief  2023 Microchip Technology Inc. and its subsidiaries
• 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 10 touches 80 Hz (subject to configuration)
- Initial touch latency <20 ms for first touch from idle (subject to configuration)
- 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
On-chip Gestures
• Reports one-touch and two-touch gestures
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
• 60-byte CRC checksummed data area for use as a run-time Product Data Store Area
• 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
Power Supply
• 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
Application Interfaces
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
• 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
• ATMXT2912TD-ATUW: –40C to +85C (Grade 3)
• ATMXT2912TD-ABUW: –40C to +105C (Grade 2)
mXT2912TD-AxUW 1.1
 2023 Microchip Technology Inc. and its subsidiaries Product Brief DS40002460A-page 3
PIN CONFIGURATION
176-lead LQFP
20
22
23
24
25
26
15
16
17
18
19
21
11
12
13
14
2
3
4
5
6
7
8
9
10
27
28
29
35
30
31
32
33
34
36
37
38
39
40
41
42
43
44
1
113
111
110
109
108
107
118
117
116
115
114
112
122
121
120
119
132
131
130
129
128
127
126
125
124
123
106
105
104
98
103
102
101
100
99
97
96
95
94
93
92
91
90
89
157
155
154
153
152
151
162
161
160
159
158
156
166
165
164
163
176
175
174
173
172
171
170
169
168
167
150
149
148
142
147
146
145
144
143
141
140
139
138
137
136
135
134
133
64
66
67
68
69
70
59
60
61
62
63
65
55
56
57
58
45
46
47
48
49
50
51
52
53
54
71
72
73
79
74
75
76
77
78
80
81
82
83
84
85
86
87
88
X29
mXT2912TD-AxUW
X20
X30
X31
X32
X33
X34
X35
X36
X37
X38
X39
NC
NC
X0
X1
X2
X3
X4
X5
X6
X7
X8
X9
X10
X11
X12
X13
X14
X15
X16
X17
X18
XVDD
GND
X19
Y64
VDDIN
Y65
Y66
Y67
Y68
Y69
Y70
NC
NC
DS0
GND
AVDD
NC
NC
NC
VDDIO
RESET
SCL/SCK
SDA/MOSI
VDDIO
GPIO0
/SS
ADDSEL/MISO
GND
GPIO1
COMMSEL
GPIO2
CHG
GPIO3
GPIO4
GPIO5
DBG_SS/GPIO6
HSYNC
VSYNC
GND
VDDCORE
Y18
GND
AVDD
Y17
Y16
Y15
Y14
Y13
Y12
Y11
Y10
Y9
Y8
Y7
Y6
Y5
Y4
Y3
Y2
NC
Y63
NC
Y37
Y41
Y42
Y43
Y44
Y45
Y46
Y47
Y48
Y49
Y50
Y51
Y52
Y53
GND
AVDD
Y54
Y55
Y56
Y57
Y58
Y59
Y60
Y61
Y62
GND
AVDD
XVDD
VDDCORE
GND
Y36
Y38
Y39
Y40
GND
DBG_CLK
DBG_DATA
VDDIO
TEST
NC
NC
NC
NC
NC
NC
AVDD
GND
Y0
Y1
NC
VREGBOOST
GND
AVDD
Y35
Y34
Y33
Y32
Y31
Y30
Y28
Y27
Y26
Y25
Y24
Y23
Y22
Y21
Y20
Y19
NC
X40
GND
XVDD
X21
X22
X23
X24
X25
X26
X27
X28
Y29
Top view


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Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: ATMXT2912TD-UW

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