Telit Wireless Solutions LM940 - Page 23

LM940 Hardware Design Guide
1VV0301352 Rev. 18 Page 23 of 75 2022-01-04
Not Subject to NDA
Pin
Signal
I/O
Function
Type
Comment
Reserved
7
Reserved
-
Reserved (NC)
11
Reserved
-
Reserved (NC)
13
Reserved
-
Reserved (NC)
22
Reserved
-
Reserved (NC)
Table 13: LM940 2.0 Pin-Out Information
Note: If the I2C interface is not used, the signals can be left floating.
Note: 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 debugging purposes
even if not used by the end application:
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
Table 14: Mandatory Signals