Telit Wireless Solutions LM940 - Page 58

LM940 Hardware Design Guide
1VV0301352 Rev. 18 Page 58 of 75 2022-01-04
Not Subject to NDA
Pin
Signal
I/O
Function
Type
Comment
3
GPIO_01
I/O
General purpose I/O
1.8V
5
GPIO_02
I/O
General purpose I/O
1.8V
44
GPIO_03
I/O
General purpose I/O
1.8V
46
GPIO_04
I/O
General purpose I/O
1.8V
45
GPIO_05
I/O
General purpose I/O
1.8V
47
GPIO_06
I/O
General purpose I/O
1.8V
49
GPIO_07
I/O
General purpose I/O
1.8V
51
GPIO_08
I/O
General purpose I/O
1.8V
Power ON/OFF Reset IN/OUT
20
W_DISABLE_N
I
Module and RF ON/OFF Control
1.8V
Active Low
*
SYSTEM_RESET_N
I
Reset Input
1.8V
Active Low
See note
1.8V Voltage Regulator
*
VREG_L6_1P8
O
LDO out for 1.8V
Power
See note
Note:
* SIMRST2, SIMVCC2, SYSTEM_RESET_N, VREG_L6_1P8 are assigned differently to LM940 1.0 and 2.0. For more
details refer to the chapter 3. Pins Allocation.
Table 38: EMC Recommendations
All other pins have the following characteristics:
• Human Body Model (HBM): ± 1000 V
• Charged Device Model (CDM) JESD22-C101-C: ± 250 V
• All Antenna pins up to ± 4 kV
Warning: Do not touch without proper electrostatic protective
equipment. The product must be handled with care, avoiding any
contact with the pins because electrostatic discharge may damage
the product itself.