UR7HCTS2-P840 Datasheet, PDF (10/16 Pages) Semtech Corporation – High-Performance, Low Power PS/2 Touch Screen Controller/Digitizer

SW1
LEFT BUTTON
SW2
RIGHT BUTTON
DRV_XL
DRV_YT
DRV_YB
DRV_XR
GND
See Notes
SENSE_XL
SENSE_YT
SENSE_YB
SENSE_XR
PWR_ON
RN1
10k
C3
10nF
+/-10% X7R
C4
10nF
+/-10% X7R
C5
10nF
+/-10% X7R
C6
10nF
+/-10% X7R
GND
2468
1357
SXL
SYT
SYB
SXR
GND
XL
YT
YB
XR
24 23 22 21 20 19 18 17
LB XR YB YT XL HD XD XC
25 _RB
2
2
2
2
AT
AT
LK
HCLK
16
26 _RSVD2
U1
XL1 ¹⁵
27 _RSVD3
28
UR7HCTS2_P840
RSVD4
29 _RSVD5
32-pin LQFP
YT1 ¹⁴
YB1 ¹³
XR1 ¹²
30 _{PWR_DOWN}
VSS ¹¹
31 _SXL
OSCOUT ¹⁰
32 _SYT
XP
RS
V
RE
OSCIN
V
9
SY SX W _R VD RE SE SS VD
BRS1 F T 2 D
Y1 ^GND
12345678
4.00MHz _VDD
C1
.1uF
C2
10uF
GND GND
GND
VDD
U2
TC54VC4502ECB ²
NOT_RESET
1
3
GND
EXT_POWER_SENSE
EXT_PS2_VDD
NOTES:
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.
M_DATA
EXT_M_DATA
EXT_M_CLOCK
M_CLOCK
EXT_PS2_VDD
L1
12uH
JP3
C7
MDIN6_SH
6
5 _47pF
4
3
2
1
GND
78
C8
47pF
Mounting
holes
VDD
M_DATA
1
2
3
4
M_CLOCK
5
GND
JP2
PS/2 DATA
SHIELD
GND
+5V
PS/2CLOCK
S5B_PH_K
REF VALUE
C1 .1uF
C3-C6 10nF
RN1 10K
TOLERANCE OTHER DATA
ANY
CERAMIC ANY
+/-10%
CERAMIC X7R
+/-5%
ANY
REF VALUE
Y1
4.00 MHz
PART#, MFG
PBRC-4.00BR, AVX
(C)2000 USAR Systems, A Semtech Company
568 BROADWAY
NEW YORK, NY 10012
Ph 212.226.2042 Fax [phone]
ScreenCoder II UR7HCTS2-P840-FG
UR7HCTS2P840 Rev 0.8