User's Guide

UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
NOTE:
If not used, almost all pins should be left disconnected. The only exceptions are the
following pins:
To test and debug the assembled UL865, we strongly recommend foreseeing test pads on the
host PCB, in order to check the connection between the UL865 itself and the application and
to test the performance of the module connecting it with an external computer. Depending by
the customer application, these pads include, but are not limited to the following signals:
TXD
RXD
RESET*
GND
VBATT
VBATT_PA
TX_AUX
RX_AUX
PWRMON
Pin
signal
38, 37
VBATT & VBATT_PA
32, 33, 35, 36, 46
GND
23
AGND
7
TXD
8
RXD
5
RTS
6
CTS
43
V_AUX / PWRMON
47
RESET*
45
TXD_AUX
44
RXD_AUX