SARA-N2 series - System Integration Manual
UBX-17005143 - R06
System description
Page 9 of 82
Function Pin Name Pin No
I/O Description
Remarks
UART
RXD
13
O
UART data output Circuit 104 (RXD) in ITU-T V.24, for AT command and
data, FOAT and FW upgrade via dedicated tool.
It operates at VCC voltage level.
Provide a test point on this pin for diagnostic purpose.
See section
for functional description.
See section
for external circuit design-in.
TXD
12
I
UART data input
Circuit 103 (TXD) in ITU-T V.24, for AT command and data,
FOAT and FW upgrade via dedicated tool.
No internal pull-up / pull-down.
Provide a test point on this pin for diagnostic purpose.
See section
for functional description.
See section
for external circuit design-in.
CTS
11
O
UART clear to send
output
HW flow control output signal (Circuit 106 in ITU-T V.24)
is not supported by "02" product versions.
The pin can be configured as described in section
The pin operates at VCC voltage level.
See section
for functional description.
See section
for external circuit design-in.
RTS
10
I
UART ready to
send input
HW flow control input signal (Circuit 105 in ITU-T V.24) is
not supported by "02" product versions.
Internal active pull-up to VCC.
See section
for functional description.
See section
for external circuit design-in.
DDC
SCL
27
O
I
2
C bus clock line
I
2
C interface is not supported by "02" product versions.
1.8 V open drain, without internal pull-up.
The pin operates at V_INT voltage level.
See section
for functional description.
See section
for external circuit design-in.
SDA
26
I/O I
2
C bus data line
I
2
C interface is not supported by "02" product versions.
1.8 V open drain, without internal pull-up.
The pin operates at V_INT voltage level.
See section
for functional description.
See section
for external circuit design-in.
GPIO
GPIO1
16
I/O GPIO
1.8 V secondary UART data output, for diagnostic
purpose.
The pin operates at V_INT voltage level.
Provide a test point on this pin for diagnostic purpose.
See sections
for functional description.
See sections
for external circuit design-in.
GPIO2
24
I/O GPIO
GPIO2 function is not supported by "02" product versions.
The pin operates at V_INT voltage level.
See section
for functional description.
See section
for external circuit design-in.
Reserved RSVD
33
N/A RESERVED pin
This pin can be connected to GND.
See sections
RSVD
2, 6-9, 15, 17,19, 23,
25, 28, 29, 31, 34-
37, 42, 44-49
N/A RESERVED pin
Leave unconnected.
See sections
Table 3: SARA-N2 series modules pin definition, grouped by function
