MXT224.pdf 데이터시트 (총 12 페이지) - 파일 다운로드 MXT224 데이타시트 다운로드

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Features
maXTouchTouchscreen
– True 12-bit multi-touch with independent XY tracking for up to 10 concurrent
touches in real time with touch size reporting
– Up to 4.3 inch diagonal screen size supported with 10 mm “pinch” separation
– Up to 10.1 inch support with correspondingly wider “pinch”
Number of Channels
– Up to 224 (subject to other configuration limitations)
– Electrode grid configurations up to 20 X by 10 Y lines supported (subject to 30
total pins and a maximum of 14 Y lines)
maXTouch Touch Key Support
– Up to 32 channels can be allocated as fixed keys (subject to other configurations)
Zero Additional Part Count
– 16 X by 14 Y matrix (224 channels) implementable with power bypass capacitors only
Signal Processing
– Advanced digital filtering using both hardware engine and firmware
– Self-calibration
– Auto drift compensation
– Adjacent Key Suppression® (AKS) technology
– Grip and face suppression
– Reports one-touch and two-touch gestures
– Down-scaling and clipping support to match LCD resolution
– Ultra-fast start-up and calibration for best user experience
– Supports axis flipping and axis switch-over for portrait and landscape modes
Scan Speed
– Maximum single touch >250Hz, subject to configuration
– Configurable to allow power/speed optimization
– Programmable timeout for automatic transition from active to idle states
Response Times
– Initial latency <10 ms for first touch from idle, subject to configuration
Sensors
– Works with PET or glass sensors
– Works with all proprietary sensor patterns recommended by Atmel®
– Works with passive stylus
Panel Thickness
– Glass up to 3 mm, screen size dependent
– Plastic up to 1.5 mm, screen size dependent
Interface
– I2C-compatible slave mode 400 kHz
Dual-rail Power
– Interface 1.8V to 3.3V nominal, analog 2.7V to 3.3V nominal
Power Consumption
– Idle 80Hz: <1.8 mW, subject to configuration
– One Touch Active 80Hz: 3.9 mW, subject to configuration
– Sleep: 4.5 µW
Package
– 49-ball UFBGA 5 x 5 x 0.6 mm, 0.65 ball pitch
– 49-ball VFBGA 5 x 5 x 1 mm, 0.65 ball pitch
– 48-pin QFN 6 x 6 x 0.6 mm, 0.4 mm pin pitch
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maXTouch
224-channel
Touchscreen
Sensor IC
mXT224
Summary
Note: This is a summary document.
A complete document is available
under NDA. For more information
contact www.atmel.com/touchscreen.
9530BS–AT42–10/09

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1. Pinout and Schematic
1.1 Pinout Configuration
1.1.1 49-ball UFBGA/VFBGA
Top View
12 3 4 5 6 7
A
B
C
D QTm6X0T2222440
E
F
G
1.1.2 48-pin QFN
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Bottom View
765432 1
A
B
C
D
E
F
G
Y13
GND
AVDD
X8
X9
X10
X11
X12
X13
X14
X15
GND
48 47 46 45 44 43 42 41 40 39 38 37
1 36
2 35
3 34
4 33
5 32
6 mXT224 31
7 30
8 29
9 28
10 27
11 26
12 25
13 14 15 16 17 18 19 20 21 22 23 24
Y0
GND
AVDD
X7
X6
X5
X4
X3
X2
X1
X0
GND
2 mXT224
9530BS–AT42–10/09

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1.2 Pinout Descriptions
1.2.1 49-ball UFBGA/VFBGA
Table 1-1.
Ball
A1
A2
A3
A4
A5
A6
A7
B1
B2
B3
B4
B5
B6
B7
C1
C2
C3
C4
C5
C6
C7
D1
D2
D3
D4
D5
D6
D7
E1
E2
E3
E4
Pin Listing
Name
AVDD
Y12
Y10
Y8
Y6
Y4
Y2
X8
GND
Y11
Y9
Y5
Y1
Y0
X10
X9
Y13
Y7
Y3
GND
AVDD
X12
X13
X11
GND
X7
X5
X6
X14
X15
RESET
GPIO1
Type
P
I/O
I/O
I
I
I
I
O
P
I/O
I
I
I
I
O
O
I/O
I
I
P
P
O
O
O
P
O
O
O
O
O
I
I/O
Comments
Analog power
Y line connection or X line in extended mode
Y line connection or X line in extended mode
Y line connection
Y line connection
Y line connection
Y line connection
X matrix drive line
Ground
Y line connection or X line in extended mode
Y line connection
Y line connection
Y line connection
Y line connection
X matrix drive line
X matrix drive line
Y line connection or X line in extended mode
Y line connection
Y line connection
Ground
Analog power
X matrix drive line
X matrix drive line
X matrix drive line
Ground
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
Reset low; has internal 30 kto 60 kpull-up resistor
General purpose I/O
mXT224
www.DataSheet4U.com
If Unused, Connect To...
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Leave open
Leave open or Vdd
Input: GND
Output: leave open
9530BS–AT42–10/09
3

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Table 1-1.
Ball
E5
E6
E7
F1
F2
F3
F4
F5
F6
F7
G1
G2
G3
G4
G5
G6
G7
Pin Listing (Continued)
Name
Type
X1 O
X3 O
X4 O
VDD
P
GND
P
SCL OD
GPIO3/
MOSI
I/O
GND
P
CHG
OD
X2 O
N/C –
SDA
OD
GPIO0/
SYNC
I/O
GPIO2/
SCK
I/O
VDD
P
ADDR_SEL
I
X0 O
Comments
X matrix drive line
X matrix drive line
X matrix drive line
Digital power
Ground
Serial Interface Clock
General purpose I/O /
Debug data
Ground
State change interrupt
X matrix drive line
No connection
Serial Interface Data
General purpose I/O
External synchronization
General purpose I/O /
Debug clock
Digital power
I2C-compatible address select
X matrix drive line
I Input only
O Output only, push-pull
P Ground or power
I/O Input and output
OD Open drain output
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If Unused, Connect To...
Leave open
Leave open
Leave open
Input: GND
Output: leave open
Leave open
Leave open
Input: GND
Output: leave open
Input: GND
Output: leave open
Leave open
4 mXT224
9530BS–AT42–10/09

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1.2.2 48-pin QFN
Table 1-2.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Pin Listing
Name
Y13
GND
AVDD
X8
X9
X10
X11
X12
X13
X14
X15
GND
VDD
RESET
N/C
SDA
SCL
GPIO0/
SYNC
GPIO1
VDD
GPIO2/
SCK
GPIO3/
MOSI
ADDR_SEL
CHG
GND
X0
X1
X2
X3
X4
X5
X6
mXT224
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Type
I/O
P
P
O
O
O
O
O
O
O
O
P
P
I
OD
OD
I/O
I/O
P
I/O
I/O
I
OD
P
O
O
O
O
O
O
O
Comments
Y line connection or X line in extended mode
Ground
Analog power
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
Ground
Digital power
Reset low; has internal 30 kto 60 kpull-up resistor
No connection
Serial Interface Data
Serial Interface Clock
General purpose I/O
External synchronization
General purpose I/O
Digital power
General purpose I/O /
Debug clock
General purpose I/O /
Debug data
I2C-compatible address select
State change interrupt
Ground
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
X matrix drive line
If Unused, Connect To...
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open or Vdd
Leave open
Input: GND
Output: leave open
Input: GND
Output: leave open
Input: GND
Output: leave open
Input: GND
Output: leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
Leave open
9530BS–AT42–10/09
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