User's Manual

CE910 Family Hardware User Guide
1vv0301010 Rev.11 – 2015-10-27
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 44 of 75
NOTE:
For minimum implementation, only the TXD and RXD lines must be connected, the other lines can be
left open provided a software flow control is implemented.
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level
signal applied to the digital pins of the CE910 when the module is powered off or during an ON/OFF
transition.
NOTE:
High-speed UART supports up to 4Mbps. Please refer to the AT command User Guide in detail.
WARNING:
Consider a mechanical design and a low-capacitance ESD protection device to protect CE910 or
customer specific requirements from ESD event to UART port (M15, N15, P15 and L14).