Handling And Esd Protection; Establishing The Data Connection; Sensor Connection - 3M PX5 Series Reference Manual

8

Handling and ESD Protection

When mounting the sensor and controller, use normal precautions for handling
electrostatic sensitive devices. The 3M Multi-Touch Controller PX5nnn has internal
protection to ±4KV for ESD discharges to the controller or touch sensor surface that may
occur during normal assembly operations.

Establishing the Data Connection

USB Connection
In USB mode, the controller uses a 3M Touch Systems USB communication cable (P/N
7319420) PC 99 compatible or equivalent interconnects. One end of this cable plugs into
the USB connector on the PX5000 series controller. The other end has a Type-A
connector, and plugs into a USB port on your PC.
When creating a custom cable, use the components found in Table 3. The following table
describes the interconnections of the 3M Touch Systems USB cable.
Table 2. USB Cable for 3M™ Multi-Touch Controllers PX5000 Series
PC Side (USB Type A)
Pin USB Assigned
1 +5Vdc (VBUS)
2 Data (DN)
3 Data (DP)
4 0V
5 Cable Shield Shell
Table 3.
Connector
P1 USB Housing
Crimp

Sensor Connection

Each controller has a unique set of sensor ZIF mating connectors. The schematics define
the number of pins and the BOM defines the vendor part number for each. The sensor
flex tails should be plugged directly into the controller connectors.
Note: ZIF connectors can be fragile. Do not force these connectors open. These ZIF
connectors are not removable; they must be opened/released to connect or disconnect a
cable from them.
Wire Controller Side (5-Pin Molex)
Color Pin Description
Red 1 +5Vdc VBUS power
Gray 2 Data (DN) differential pair
Green 3 Data (DP) differential pair
Black 4 Power return
Charcoal 5 Outer cable shield around signal and
Gray power lines. Chassis (earth) ground
Molex Adam Tech
51004-0500 2CH-F-05
50011-8100 2CTF-R
3M Touch Systems, Inc. Proprietary Information
3M™ Multi-Touch ASIC Controller Reference Guide
JWT
A2004H00-5P
A2004TOP-2