User's Manual
Table Of Contents
- Preface
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.6 System function interfaces
- 1.7 Antenna interface
- 1.8 SIM interface
- 1.9 Serial interfaces
- 1.9.1 Asynchronous serial interface (UART)
- 1.9.1.1 UART features
- 1.9.1.2 UART AT interface configuration
- 1.9.1.3 UART signal behavior
- 1.9.1.4 UART and power-saving
- AT+UPSV=0: power saving disabled, fixed active-mode
- AT+UPSV=1: power saving enabled, cyclic idle/active-mode
- AT+UPSV=2: power saving enabled and controlled by the RTS line
- AT+UPSV=3: power saving enabled and controlled by the DTR line
- Wake up via data reception
- Additional considerations for SARA-U2 modules
- 1.9.1.5 Multiplexer protocol (3GPP 27.010)
- 1.9.2 Auxiliary asynchronous serial interface (UART AUX)
- 1.9.3 USB interface
- 1.9.4 DDC (I2C) interface
- 1.9.1 Asynchronous serial interface (UART)
- 1.10 Audio interface
- 1.11 General Purpose Input/Output (GPIO)
- 1.12 Reserved pins (RSVD)
- 1.13 System features
- 1.13.1 Network indication
- 1.13.2 Antenna detection
- 1.13.3 Jamming detection
- 1.13.4 TCP/IP and UDP/IP
- 1.13.5 FTP
- 1.13.6 HTTP
- 1.13.7 SMTP
- 1.13.8 SSL
- 1.13.9 Dual stack IPv4/IPv6
- 1.13.10 Smart temperature management
- 1.13.11 AssistNow clients and GNSS integration
- 1.13.12 Hybrid positioning and CellLocateTM
- 1.13.13 Firmware upgrade Over AT (FOAT)
- 1.13.14 Firmware upgrade Over The Air (FOTA)
- 1.13.15 In-Band modem (eCall / ERA-GLONASS)
- 1.13.16 SIM Access Profile (SAP)
- 1.13.17 Power saving
- 2 Design-in
- 2.1 Overview
- 2.2 Supply interfaces
- 2.2.1 Module supply (VCC)
- 2.2.1.1 General guidelines for VCC supply circuit selection and design
- 2.2.1.2 Guidelines for VCC supply circuit design using a switching regulator
- 2.2.1.3 Guidelines for VCC supply circuit design using a Low Drop-Out (LDO) linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable Li-Ion or Li-Pol battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary (disposable) battery
- 2.2.1.6 Additional guidelines for VCC supply circuit design
- 2.2.1.7 Guidelines for external battery charging circuit
- 2.2.1.8 Guidelines for external battery charging and power path management circuit
- 2.2.1.9 Guidelines for VCC supply layout design
- 2.2.1.10 Guidelines for grounding layout design
- 2.2.2 RTC supply (V_BCKP)
- 2.2.3 Interface supply (V_INT)
- 2.2.1 Module supply (VCC)
- 2.3 System functions interfaces
- 2.4 Antenna interface
- 2.5 SIM interface
- 2.6 Serial interfaces
- 2.6.1 Asynchronous serial interface (UART)
- 2.6.1.1 Guidelines for UART circuit design
- Providing the full RS-232 functionality (using the complete V.24 link)
- Providing the TXD, RXD, RTS, CTS and DTR lines only (not using the complete V.24 link)
- Providing the TXD, RXD, RTS and CTS lines only (not using the complete V.24 link)
- Providing the TXD and RXD lines only (not using the complete V24 link)
- Additional considerations
- 2.6.1.2 Guidelines for UART layout design
- 2.6.1.1 Guidelines for UART circuit design
- 2.6.2 Auxiliary asynchronous serial interface (UART AUX)
- 2.6.3 Universal Serial Bus (USB)
- 2.6.4 DDC (I2C) interface
- 2.6.1 Asynchronous serial interface (UART)
- 2.7 Audio interface
- 2.7.1 Analog audio interface
- 2.7.1.1 Guidelines for microphone and speaker connection circuit design (headset / handset modes)
- 2.7.1.2 Guidelines for microphone and loudspeaker connection circuit design (hands-free mode)
- 2.7.1.3 Guidelines for external analog audio device connection circuit design
- 2.7.1.4 Guidelines for analog audio layout design
- 2.7.2 Digital audio interface
- 2.7.1 Analog audio interface
- 2.8 General Purpose Input/Output (GPIO)
- 2.9 Reserved pins (RSVD)
- 2.10 Module placement
- 2.11 Module footprint and paste mask
- 2.12 Thermal guidelines
- 2.13 ESD guidelines
- 2.14 SARA-G350 ATEX integration in explosive atmospheres applications
- 2.15 Schematic for SARA-G3 and SARA-U2 series module integration
- 2.16 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 5 Product testing
- Appendix
- A Migration between LISA and SARA-G3 modules
- A.1 Overview
- A.2 Checklist for migration
- A.3 Software migration
- A.4 Hardware migration
- B Migration between SARA-G3 and SARA-U2
- C Glossary
- Related documents
- Revision history
- Contact
SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R08 Objective Specification Appendix
Page 181 of 188
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