Integration Manual

SARA-R4/N4 series - System Integration Manual
UBX-16029218 - R13 Appendix Page 110 of 119
A.2 Pin-out comparison
Table 41 shows a pin-out comparison between the SARA-G3, SARA-U2, SARA-R4/N4, and SARA-N2 modules.
No SARA-G3
Pin Name Description
SARA-U2
Pin Name Description
SARA-R4
Pin Name Description
SARA-N2
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 if 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 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 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 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 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
35
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
35
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.
11 CTS UART CTS Output
V_INT level (1.8 V)
Driver strength: 6 mA
CTS UART CTS Output
V_INT level (1.8 V)
Driver strength: 6 mA
CTS UART CTS Output
35
V_INT level (1.8 V)
Driver strength: 2 mA
CTS UART CTS Output
35
VCC level (3.6 V typ.)
Driver strength: 1 mA
Configurable as Ring Indicator or
Network Indicator
Diverse level (V_INT vs VCC)
Diverse driver strength.
Diverse functions supported.
35
Not supported by “00”, “01”, SARA-R410M-02B-00 product versions and SARA-N2 modules