Ublox SARA-N4 Series, System Integration Manual

Page: 147 / 157

SARA-R4/N4 series - System Integration Manual
UBX-16029218 - R11 Appendix Page 147 of 157
No SARA-G3
Pin Name Description
SARA-U2
Pin Name Description
SARA-R4
Pin Name Description
SARA-N2
Pin Name Description Remarks for migration
24 GPIO3 /
32K_OUT GPIO (G340/G350)
32 kHz Output (G300/G310)
V_INT level (1.8 V)
Default: GNSS data ready
Driver strength: 5 mA
GPIO3 GPIO
V_INT level (1.8 V)
Default: GNSS data ready
Driver strength: 6 mA
GPIO3 GPIO
V_INT level (1.8 V)
Default: Pin disabled
Driver strength: 2 mA
GPIO2 GPIO 23
V_INT level (1.8 V)
Default: Pin disabled
Driver strength: 1 mA
Diverse driver strength
25 GPIO4 / RSVD GPIO (G340/G350)
Reserved (G300/G310)
V_INT level (1.8 V)
Default: GNSS RTC sharing
Driver strength: 6 mA
GPIO4 GPIO
V_INT level (1.8 V)
Default: GNSS RTC sharing
Driver strength: 6 mA
GPIO4 GPIO
V_INT level (1.8 V)
Default: Output/Low
Driver strength: 2 mA
RSVD Reserved GPIO vs Reserved
26 SDA /
RSVD I 2 C Data I/O (G340/G350)
Reserved (G300/G310)
V_INT level (1.8 V)
Open drain
No internal pull-up
SDA I 2 C Data I/O /
AUX UART in (‘04’ version)
V_INT level (1.8 V)
Open drain
No internal pull-up
SDA I 2 C Data I/O 22
V_INT level (1.8 V)
Open drain
Internal 2.2 k pull-up
SDA I 2 C Data I/O 23
V_INT level (1.8 V)
Open drain
No internal pull-up
Internal vs No internal pull-up
27 SCL /
RSVD I 2 C Clock Out (G340/G350)
Reserved (G300/G310)
V_INT level (1.8 V)
Open drain
No internal pull-up
SCL I 2 C Clock Output /
AUX UART out (‘04’ version)
V_INT level (1.8 V)
Open drain
No internal pull-up
SCL I 2 C Clock Output 22
V_INT level (1.8 V)
Open drain
Internal 2.2 k pull-up
SCL I 2 C Clock Output 23
V_INT level (1.8 V)
Open drain
No internal pull-up
Internal vs No internal pull-up
28 RXD_AUX Aux UART Data Out
V_INT level (1.8 V)
USB_D- USB Data I/O (D-)
High-Speed USB 2.0
USB_D- USB Data I/O (D-)
High-Speed USB 2.0
RSVD Reserved USB / AUX UART vs Reserved
TestPoint recommended for
SARA-G3/U2/R4 modules
29 TXD_AUX Aux UART Data In
V_INT level (1.8 V)
USB_D+ USB Data I/O (D+)
High-Speed USB 2.0
USB_D+ USB Data I/O (D+)
High-Speed USB 2.0
RSVD Reserved USB / AUX UART vs Reserved
TestPoint recommended for
SARA-G3/U2/R4 modules
22 Not supported by “00” and “01” product versions
23 Not supported by “02” product versions