UR7HCTS2-P840-FG Semtech Corporation, UR7HCTS2-P840-FG Datasheet - Page 10

• Manufacturer Part Number: UR7HCTS2-P840-FG
• Description: High-Performance/ Low Power PS/2 Touch Screen Controller/Digitizer
• Manufacturer: Semtech Corporation

PWR_ON
P840 == PS/2 In/Out, 4.00 MHz, 8/4-wire, Model 0.
Connect Drive and Sense lines together for the 4-wire Sensor.
Y1 == 4.00 MHz Ceramic Resonator with Built-in Load Capacitors.
Crystals can NOT be used.
GND
NOTES:
SENSE_XL
SENSE_YT
SENSE_YB
SENSE_XR
DRV_XL
DRV_YT
DRV_YB
DRV_XR
+/-10% X7R
+/-10% X7R
+/-10% X7R
+/-10% X7R
C3
10nF
C4
10nF
C5
10nF
C6
10nF
RN1
10k
LEFT BUTTON
See Notes
SW1
2
1
4
3
6
5
GND
7
8
SXL
SYT
SYB
SXR
25
26
27
28
29
30
31
32
XL
YT
YB
XR
RB
RSVD2
RSVD3
RSVD4
RSVD5
PWR_DOWN
SXL
SYT
L
B
S
Y
B
2
4
1
X
R
2
S
X
R
2
3
2
UR7HCTS2_P840
GND
32-pin LQFP
Y
B
2
X
P
W
R
S
2
2
3
EXT_POWER_SENSE
RIGHT BUTTON
Y
T
2
R
S
V
D
1
SW2
2
1
4
U1
X
L
2
V
R
E
F
2
0
5
H
D
A
T
R
E
S
E
T
1
9
6
GND GND
X
D
A
T
V
S
S
2
NOT_RESET
1
8
7
OSCOUT 10
OSCIN
X
C
L
K
V
D
D
1
7
HCLK 16
8
TC54VC4502ECB
XL1
YT1
YB1
XR1
VSS
C1
.1uF
15
14
13
12
11
U2
9
4.00MHz
GND
EXT_PS2_VDD
Y1
1
10uF
C2
VDD
GND
VDD
2
3
GND
M_DATA
EXT_M_DATA
EXT_M_CLOCK
M_CLOCK
ScreenCoder II UR7HCTS2-P840-FG
(C)2000 USAR Systems, A Semtech Company
568 BROADWAY
NEW YORK, NY 10012
Ph 212.226.2042 Fax [phone]
UR7HCTS2P840 Rev 0.8
REF
Y1
REF
C1
C3-C6
RN1
.1uF
VALUE
4.00 MHz
VALUE
10K
10nF
M_DATA
M_CLOCK
+/-10%
+/-5%
TOLERANCE OTHER DATA
ANY
PART#, MFG
EXT_PS2_VDD
PBRC-4.00BR, AVX
VDD
6
4
2
GND
MDIN6_SH
L1
12uH
JP3
CERAMIC ANY
CERAMIC X7R
ANY
7
1
2
3
4
5
Mounting
holes
JP2
S5B_PH_K
8
PS/2 DATA
SHIELD
GND
+5V
PS/2CLOCK
5
3
1
47pF
47pF
GND
C7
C8