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page 11
User Manual | Chronos
Pin # Pin Name
Pin Type
Description
If not used
Notes
35
RXD1
Digital output
UART1
Leave open
36
TXD1
Digital input
UART1
Leave open
Internal 100k
pullup
37
IO1
Digital I/O
GPIO
Leave open
38
GNSS_PPS
Digital output
1 pulse per second
Leave open
39
GND
n/a
GND
Must be
implemented
40
ADC
Analog input
Leave open
Refer to Telit
documentation
Note: In some use cases, ON_OFF# can be tied to GND.
If this is done, there are two items to consider:
1.
PSM asynchronous wake-up capability will be lost.
2.
To perform an unconditional shutdown in this configuration, it is necessary to send AT#SHDN
and then turn off Vcell.