SARA-G3 series - System Integration Manual
UBX-13000995 - R06 Objective Specification Appendix
Page 198 of 218
A.4.4 SIM interface
SIM interface
The same compatible external circuit can be implemented for SARA-G3 and LISA modules: 1.8 V and
3.0 V SIM card / IC are supported. LISA-C2 modules do not need an external SIM for Sprint and
Verizon mobile operators. LISA-C2 series SIM interface is hardware ready but the support of external SIM
card / IC will be provided by the upcoming firmware releases.
SIM detection interface
The same compatible external circuit can be implemented for SARA-G3 and LISA modules: SIM detection
function is provided by the SIM_DET pin on SARA-G3 modules and by the GPIO5 pin on LISA-U
modules. SIM card hot insertion/removal is additionally supported by all LISA-U2 series except LISA-
U200-00S.
LISA-C2 modules do not support SIM detection.
A.4.5 Serial interfaces
UART interface
The same compatible external circuit can be implemented for SARA-G3 and LISA modules: a 1.8 V
unbalanced asynchronous serial port with RS-232 functionality is provided on SARA-G3 modules (for AT
command, data communication, MUX functionality, FW upgrade over AT), LISA-C2 modules (for AT
command, data communication, MUX functionality), LISA-U modules (for AT command, data
communication, MUX functionality, FW upgrade over AT or using the u-blox EasyFlash tool).
LISA-C2 modules do not support DSR, DCD and DTR functions.
Table 42Table 42 and the module’s datasheet [1], [3], [4], [5] report minor differences in the internal
pull-ups and drivers strengths.
These are the default settings of the UART interfaces:
SARA-G3 modules: automatic baud rate and frame format detection
LISA-U2 except LISA-U200-00S modules: one-shot automatic baud rate and frame format detection
LISA-C2, LISA-U1 and LISA-U200-00S modules: 115200 b/s baud rate and 8N1 frame format
For further details regarding UART interface settings refer to the module’s datasheet [1], [3], [4], [5]
and to the relevant AT commands manual of the module [2], [8].
UART AUX interface
Only the SARA-G3 modules provide an auxiliary UART interface for FW upgrade using the u-blox
EasyFlash tool and for Trace log capture (debug purpose).
LISA modules do not provide an auxiliary UART interface.
USB interface
SARA-G3 modules do not provide a USB interface such as is available on LISA-U modules (High-Speed
USB 2.0 for AT command, data communication, FW upgrade over AT or using the u-blox EasyFlash tool,
and for Trace log capture) and on LISA-C2 modules (Full-Speed USB 2.0 for AT command, Data
communication, FW upgrade).
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