Datasheet

AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
DS41393B-page 6 Preliminary  2009-2012 Microchip Technology Inc.
TABLE 1-1: PIN DESCRIPTIONS
Pin
Function Description/Comments
SSOP, SOIC QFN
118 V
DD Supply Voltage
2 19 M1 Communication Selection
3 20 SY- Sense Y- (8-wire). Tie to V
SS, if
not used.
4 1 M2 4/8-wire or 5-wire Sensor
Selection
5 2 WAKE Touch Wake-up/Touch Detection
6 3 SIQ LED Drive/SPI Interrupt. No
connect, if not used.
7 4 SY+ Sense Y+ (8-wire). Tie to V
SS, if
not used.
8 5 SS Slave Select (SPI). Tie to V
SS, if
not used.
9 6 SDO SPI Serial Data Output/I
2
C™
Interrupt. Tie to Vss, if UART.
10 7 NC No connection. No connect or tie
to VSS or VDD.
11 8 SCK/SCL/TX SPI/I
2
C™ Serial Clock/UART
Transmit
12 9 NC No connection. No connect or tie
to VSS or VDD.
13 10 SDI/SDA/RX I
2
C™ Serial Data/SPI Serial Data
Input/UART Receive
14 11 SX+ Sense X+ (8-wire). Tie to V
SS, if
not used.
15 12 Y+ Y+ Drive
16 13 Y- Y- Drive
17 14 5WSX- 5W Sense (5-wire)/Sense X-
(8-wire). Tie to V
SS, if not used.
18 15 X+ X+ Drive
19 16 X- X- Drive
20 17 V
SS Supply Voltage Ground