User's Guide

LM940 HW Design Guide
1VV0301352 Rev. 2 Page 24 of 68 2017-07-19
Information – Unless otherwise specified, RESERVED pins must be
left unconnected (Floating).
LM940 Signals That Must Be Connected
Below table specifies the LM940 signals that must be connected for a debugging purpose
even if not used by the end application:
Mandatory Signals
Pin Signal Notes
2, 24, 39, 41, 52 VBATT
4, 9, 15, 18, 21, 26, 27, 29, 34, 35, 37, 40, 43,
50
GND
38 USB_D+ If not used, connect to a test
point or an USB connector
36 USB_D- If not used, connect to a test
point or an USB connector