Microchip ATMXT2912TD-MK Handleiding

Microchip Niet gecategoriseerd ATMXT2912TD-MK

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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)
mXT2912TD-ATMK/mXT2912TD-ABMK 1.0
 2022 Microchip Technology Inc. and its subsidiaries Product Brief DS40002426A-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
X11
mXT2912TD-ATMK/mXT2912TD-ABMK
X20
X10
X9
X8
X7
X6
X5
X4
X3
X2
X1
NC
NC
X40
X39
X38
X37
X36
X35
X34
X33
X32
X31
X30
X29
X28
X27
X26
X25
X24
X23
X22
XVDD
GND
X21
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
Y17
GND
AVDD
Y18
Y19
Y20
Y21
Y22
Y23
Y24
Y25
Y26
Y27
Y28
Y29
Y30
Y31
Y32
Y33
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
Y35
Y34
NC
VREGBOOST
GND
AVDD
Y0
Y1
Y2
Y3
Y4
Y5
Y7
Y8
Y9
Y10
Y11
Y12
Y13
Y14
Y15
Y16
NC
X0
GND
XVDD
X19
X18
X17
X16
X15
X14
X13
X12
Y6
Top view

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: ATMXT2912TD-MK

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