User's Manual

SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R18 Advance Information Appendix
Page 198 of 206
B.2 Pin-out comparison between SARA-G3 and SARA-U2
SARA-G3
SARA-U2
Pin No
Pin Name
Description
Pin Name
Description
Remarks for migration
1
GND
Ground
GND
Ground
2 V_BCKP RTC Supply I/O
Output characteristics:
2.3 V typ, 2 mA max
Input op. range:
1.0 V – 2.4 V
V_BCKP RTC Supply I/O
Output characteristics:
1.8 V typ, 3 mA max
Input op. range:
1.0 V – 1.9 V
No functional difference
3
GND
Ground
GND
Ground
4 V_INT Interfaces Supply Out
Output characteristics:
1.8 V typ, 50 mA max
V_INT Interfaces Supply Out
Output characteristics:
1.8 V typ, 50 mA max
No functional difference
5
GND
Ground
GND
Ground
6 DSR UART DSR Output
1.8 V, Driver strength: 6 mA
DSR UART DSR Output
1.8 V, Driver strength: 1 mA
No functional difference
7 RI UART RI Output
1.8 V, Driver strength: 6 mA
RI UART RI Output
1.8 V, Driver strength: 2 mA
No functional difference
8 DCD UART DCD Output
1.8 V, Driver strength: 6 mA
DCD UART DCD Output
1.8 V, Driver strength: 2 mA
No functional difference
9 DTR UART DTR Input
1.8 V, Internal pull-up: ~33k
DTR UART DTR Input
1.8 V, Internal pull-up: ~14 k
No functional difference
10 RTS UART RTS Input
1.8 V, Internal pull-up:~58 k
RTS UART RTS Input
1.8 V, Internal pull-up: ~8 k
No functional difference
11 CTS UART CTS Output
1.8 V, Driver strength: 6 mA
CTS UART CTS Output
1.8 V, Driver strength: 6 mA
No functional difference
12 TXD UART Data Input
1.8 V, Internal pull-up:~18 k
TXD UART Data Input
1.8 V, Internal pull-up: ~8 k
No functional difference
13 RXD UART Data Output
1.8 V, Driver strength: 6 mA
RXD UART Data Output
1.8 V, Driver strength: 6 mA
No functional difference
14
GND
Ground
GND
Ground
15 PWR_ON Power-on Input
No internal pull-up
L-level: -0.10 V – 0.65 V
H-level: 2.00 V – 4.50 V
ON L-level time:
5 ms min
OFF L-level pulse time:
Not Available
PWR_ON Power-on Input
No internal pull-up
L-level: -0.30 V – 0.65 V
H-level: 1.50 V – 4.40 V
ON L-level pulse time:
50 μs min / 80 μs max
OFF L-level pulse time:
1 s min
No functional difference
16 GPIO1 / RSVD 1.8 V GPIO / Reserved
Default: Pin disabled
Driver strength: 6 mA
Internal pull-down: ~35 k
GPIO1 1.8 V GPIO
Default: Pin disabled
Driver strength: 6 mA
Internal pull-down: ~9 k
No functional difference
17 RSVD Reserved VUSB_DET USB Detect Input
5 V, Supply detection
USB detection instead of
Reserved
18 RESET_N Reset signal
Internal diode & pull-up
L-level: -0.30 V – 0.30 V
H-level: 2.00 V – 4.70 V
Reset L-level pulse time:
50 ms min (SARA-G350/G340)
3 s min (SARA-G300/G310)
RESET_N Reset signal
10 k: internal pull-up
L-level: -0.30 V – 0.51 V
H-level: 1.32 V – 2.01 V
Reset L-level pulse time:
50 ms min
No functional difference
19 RSVD Reserved
CODEC_CLK
13 or 26 MHz Output
Driver strength: 4 mA
Clock output instead of
Reserved
20-22
GND
Ground
GND
Ground
23 GPIO2 / RSVD 1.8 V GPIO / Reserved
Default: GNSS supply enable
Driver strength: 6 mA
Internal pull-down: ~35 k
GPIO2 1.8 V GPIO
Default: GNSS supply enable
Driver strength: 1 mA
Internal pull-down: ~14 k
No functional difference
24 GPIO3 / 32K_OUT 1.8 V GPIO / 32 kHz Output
Default: GNSS data ready
Driver strength: 5 mA
Inner pull-down: ~67 k
GPIO3 1.8 V GPIO
Default: GNSS data ready
Driver strength: 6 mA
Internal pull-down: ~9 k
No functional difference