UR7HCPXZ-S440 Datasheet, PDF (5/10 Pages) Semtech Corporation – Advanced “Click-to-Select” No-DriftTM Pointing Stick Controller

HARDWARE INTERFACE FOR THE COMMUNICATION LINES
The TXD and RTS lines are CMOS logic-level signals, suitable for direct connection to the pins of an UART.
Interfacing via the RS-232 port requires an addition of an inverting driver and receiver. Simple one-transistor
inverting driver and receiver can also be utilized. Contact Semtech for more details.
FEATURES
Byte 1
b0
b1
b2
b3
b4
b5
b6
Byte 2
b0
b1
b2
b3
b4
b5
b6
Byte 3
b0
b1
b2
b3
b4
b5
b6
Byte 4
b0
b1
b2
b3
b4
b5
b6
X6
X7: MSB of X Data
Y6
Y7: MSB of Y Data
Right Button Status, 1 = depressed
Left Button Status, 1 = depressed
Always=1
X0: LSB of X data
X1
X2
X3
X4
X5
Always=0
Y0: LSB of Y data
Y1
Y2
Y3
Y4
Y5
Always=0
Z0: LSB of Z data
Z1
Z2
Z3: MSB of Z data
Middle Button Status; 1=depressed
Always=0
Always=0
Copyright ©1999-2001 Semtech Corporation
5
DOC7-PXZ-S440-DS-103
www.semtech.com