UR7HCPXZ-S440 Datasheet, PDF (4/10 Pages) Semtech Corporation – Advanced “Click-to-Select” No-DriftTM Pointing Stick Controller

BUILT-IN FEATURES
Semtech utilizes the scroll button to
switch the PixiPoint^TM Z from normal
operation mode to scroll mode.
When scroll button is pressed, the
UR7HCPXZ-S440 will convert the Y-
axis data to Z-axis data (scroll data)
and output zero motion for X-axis
and Y-axis. When the scroll button
is released, the UR7HCPXZ-S440
outputs X/Y motion data and zero
displacement for Z-Axis.
Tap — Select.
Double Tap — Execute.
Press Hold — Drag.
EasyDrag^TM — reduces the speed
of the cursor when the user is
dragging an object on the desktop,
making it simple to accurately
handle the object.
CleanStop^TM — ensures that the
cursor stops the instant the user
needs it to.
No special drivers are needed to
access any of these features.
Scrolling (MouseWheel) operations
require IntelliMouse-compatible
Driver with Plug-n-Play support.
POWER CONSUMPTION
The UR7HCPXZ-S440 typically consumes less than 3mA. Low-power
consumption makes it suitable for use in battery-operated systems.
SERIAL COMMUNICATION
Communication through the serial port is uni-directional at a fixed speed of
1200 Baud, 7N1 protocol (7 data bits, 1 stop bit, no parity check).
The Host can reset the device at any time by setting the RTS line High.
When RTS is set Low after a delay of at least 100ms, the device will
respond with an Identification and Plug-n-Play strings. This procedure is
known as “RTS Toggle Handshaking.” When RTS goes low, the device will
send the ID characters “MZ” (0x4D, 0x5A) indicating wheel capability to the
Host. Then a ZERO motion report (0x40, 0x00, 0x00, 0x00) is sent as a
separator, followed by the Plug and Play string
“vvPNP0F0A\\MOUSE\PNP0F0A\USAR SERIAL PIXZ MOUSEcc.”
Plug and Play is a sequence of ASCII characters with their codes reduced
by 0x20. Note, vv is a version number, 2 Bytes, and cc is a Check Sum, 2
Bytes. For further information, please refer to “Plug and Play External COM
Device Specification,” available from Microsoft.
4-Byte Data Report is sent if motion is detected, or if buttons are pressed or
released. Motion is reported relative to the last Report sent, in a Two’s
Complement form and eight (8) bit resolution. In other words, the Maximum
Motion values are -128 to +127, saturated at min/max for faster speeds.
Z3-Z0 is Z-displacement. It is 4-bit Two’s Complement value from -8 to +7.
Copyright ©1999-2001 Semtech Corporation
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DOC7-PXZ-S440-DS-103
www.semtech.com