MXT224 Datasheet, PDF (7/12 Pages) ATMEL Corporation – maXTouch 224-channel Touchscreen Sensor IC

1.3 Schematic
1.3.1 49-ball UFBGA/VFBGA
100 nF
mXT224
Regulated Regulated
VDD
AVDD
NOTE: Bypass capacitors must be X7R or
X5R and placed <5 mm away from chip.
1 mF
100 nF
1 mF
VDD
Rp Rp
I²C-COMPATIBLE
SDA
SCL
VDD
Rc
CHG
I²C-COMPATIBLE
ADDRESS SELECT
X0 ^G7
X1 ^E5
E4 _GPIO1
G4 _GPIO2/SCK
X2 ^F7
X3 ^E6
X4 ^E7
F4 _GPIO3/MOSI
X5 ^D6
X6 ^D7
X7 ^D5
QmTX6T022224 40
X8
X9
B1
C2
X10 ^C1
G2 _SDA
F3 _SCL
X11 ^D3
X12 ^D1
X13 ^D2
G1 _N/C
X14 ^E1
X15 ^E2
E3
RESET
X16/Y13 ^C3
G3
GPIO0/SYNC
X17/Y12
X18/Y11
A2
B3
X19/Y10 ^A3
F6
CHG
G6 _{ADDR_SEL}
B2 _GND
C6 _GND
D4 _GND
F2 _GND
F5 _GND
Y9 ^B4
Y8 ^A4
Y7 ^C4
Y6 ^A5
Y5 ^B5
Y4 ^A6
Y3 ^C5
Y2 ^A7
Y1 ^B6
Y0 ^B7
* NOTE: Y10 to Y13 scan lines may be
used as additional X drive lines in
extended mode (a 100W resistor must
be added to each additional line).
7
9530BS–AT42–10/09