10 3M™ MicroTouch™ Controller EX USB Reference Guide
3M Touch Systems, Inc. Proprietary Information -- 29489v05
A 3M™ MicroTouch™ surface capacitive sensor (available in a variety of sizes).
A method of establishing the USB data communication between the controller and
your system. The standard 3M™ MicroTouch™ USB cable (P/N 7319420) is
recommended for this device.
The controller will operate with the standard USB +5V bus power.
A touch driver and a calibration program. You can use 3M™ MicroTouch™ MT 7
software which includes the necessary touch driver and utilities software.
Handling and ESD Protection
When mounting the sensor and controller, use normal precautions for handling
electrostatic sensitive devices. The EX USB controllers have internal protection to ±27
kV for ESD discharges to the sensor (not to the controller directly) that may occur during
normal operation of the sensor. Refer to the appendices for further specifications.
Establishing the Data Connection
The EX USB controller requires a 3M™ MicroTouch™ USB communication cable (P/N
7319420) or an equivalent interconnect. One end of this cable plugs into the USB
connector (JP1) on the EX USB controller. The other end plugs into a USB port on your
PC with a Type-A connector. Table 1 describes the interconnections of the 3M™
MicroTouch™ USB cable.
Table 1. USB Cable for EX USB Controllers
PC Side (USB Type A) Wire Controller Side (5-Pin Molex)
Pin USB Assigned Color Pin Description
1 +5VDC Red 1 +5VDC input power
2 Data (DN) Gray 2 Data (DN) differential pair
3 Data (DP) Green 3 Data (DP) differential pair
4 0V Black 4 Power return
5 Cable Shield Shell Charcoal
Gray
5 Outer cable shield around signal and
power lines. Chassis (earth) ground
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