SARA-N2 series - System Integration Manual
UBX-17005143 - R06
Appendix
Page 73 of 82
A.2
Pin-out comparison between SARA-G3, SARA-U2, SARA-R4 and SARA-N2 modules
SARA-G3
SARA-U2
SARA-R4
SARA-N2
No
Pin Name
Description
Pin Name
Description
Pin Name
Description
Pin Name
Description
Remarks for migration
1
GND
Ground
GND
Ground
GND
Ground
GND
Ground
2
V_BCKP
RTC Supply I/O
V_BCKP
RTC Supply I/O
RSVD
Reserved
RSVD
Reserved
RTC supply vs Reserved
3
GND
Ground
GND
Ground
GND
Ground
GND
Ground
4
V_INT
Interfaces Supply Output:
1.8 V typ, 70 mA max
V_INT
Interfaces Supply Output:
1.8 V typ, 70 mA max
V_INT
Interfaces Supply Output:
1.8 V typ, 70 mA max
Switched-off in deep-sleep
V_INT
Interfaces Supply Output:
1.8 V typ, 70 mA max
Switched-off when radio is
off
V_INT is switched off in deep
sleep (R4), or if radio is off (N2)
TestPoint always
recommended
5
GND
Ground
GND
Ground
GND
Ground
GND
Ground
6
DSR
UART DSR Output
V_INT level (1.8 V)
Driver strength: 6 mA
DSR
UART DSR Output
V_INT level (1.8 V)
Driver strength: 1 mA
DSR
UART DSR Output
V_INT level (1.8 V)
Driver strength: 2 mA
RSVD
Reserved
Not supported by SARA-N2
Diverse driver strength
7
RI
UART RI Output
V_INT level (1.8 V)
Driver strength: 6 mA
RI
UART RI Output
V_INT level (1.8 V)
Driver strength: 2 mA
RI
UART RI Output
V_INT level (1.8 V)
Driver strength: 2 mA
RSVD
Reserved
Not supported by SARA-N2
Diverse driver strength
8
DCD
UART DCD Output
V_INT level (1.8 V)
Driver strength: 6 mA
DCD
UART DCD Output
V_INT level (1.8 V)
Driver strength: 2 mA
DCD
UART DCD Output
V_INT level (1.8 V)
Driver strength: 2 mA
RSVD
Reserved
Not supported by SARA-N2
Diverse driver strength
9
DTR
UART DTR Input
V_INT level (1.8 V)
Internal pull-up: ~33 k
It must be set low to have
greeting text sent over
UART
DTR
UART DTR Input
V_INT level (1.8 V)
Internal pull-up: ~14 k
It must be set low to have
greeting text sent over
UART
DTR
UART DTR Input
V_INT level (1.8 V)
Internal pull-up: ~100 k
It must be set low to have
URCs sent over UART
RSVD
Reserved
Not supported by SARA-N2
Diverse internal pull-up value
10
RTS
UART RTS Input
V_INT level (1.8 V)
Internal pull-up:~58 k
RTS
UART RTS Input
V_INT level (1.8 V)
Internal pull-up: ~8 k
RTS
UART RTS Input
V_INT level (1.8 V)
Internal pull-up: ~100 k
It must be set low to use
UART on ‘00’, ‘01’ product
versions
RTS
UART RTS Input
2
VCC level (3.6 V typ.)
Internal pull-up: ~78 k
Diverse level (V_INT vs VCC)
Diverse internal pull-up value
Diverse
functions
supported.
2
Not supported by “00”, “01” and “02” product versions
