Integration Manual
Table Of Contents
- Document information
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Supply interfaces
- 1.5.1 Module supply input (VCC)
- 1.5.1.1 VCC supply requirements
- 1.5.1.2 VCC current consumption in LTE connected mode
- 1.5.1.3 VCC current consumption in 2G connected mode
- 1.5.1.4 VCC current consumption in ultra low power deep sleep mode
- 1.5.1.5 VCC current consumption in low power idle mode
- 1.5.1.6 VCC current consumption in active mode (PSM / low power disabled)
- 1.5.2 Generic digital interfaces supply output (V_INT)
- 1.5.1 Module supply input (VCC)
- 1.6 System function interfaces
- 1.7 Antenna interfaces
- 1.8 SIM interface
- 1.9 Data communication interfaces
- 1.10 Audio
- 1.11 General Purpose Input/Output
- 1.12 GNSS peripheral input output
- 1.13 Reserved pins (RSVD)
- 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 LDO linear regulator
- 2.2.1.4 Guidelines for VCC supply circuit design using a rechargeable battery
- 2.2.1.5 Guidelines for VCC supply circuit design using a primary battery
- 2.2.1.6 Guidelines for external battery charging circuit
- 2.2.1.7 Guidelines for external charging and power path management circuit
- 2.2.1.8 Guidelines for particular VCC supply circuit design for SARA-R4x2
- 2.2.1.9 Guidelines for removing VCC supply
- 2.2.1.10 Additional guidelines for VCC supply circuit design
- 2.2.1.11 Guidelines for VCC supply layout design
- 2.2.1.12 Guidelines for grounding layout design
- 2.2.2 Generic digital interfaces supply output (V_INT)
- 2.2.1 Module supply (VCC)
- 2.3 System functions interfaces
- 2.4 Antenna interfaces
- 2.5 SIM interface
- 2.6 Data communication interfaces
- 2.7 Audio
- 2.8 General Purpose Input/Output
- 2.9 GNSS peripheral input output
- 2.10 Reserved pins (RSVD)
- 2.11 Module placement
- 2.12 Module footprint and paste mask
- 2.13 Thermal guidelines
- 2.14 Schematic for SARA-R4 series module integration
- 2.15 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 4.1 Product certification approval overview
- 4.2 US Federal Communications Commission notice
- 4.3 Innovation, Science, Economic Development Canada notice
- 4.4 European Conformance CE mark
- 4.5 National Communication Commission Taiwan
- 4.6 ANATEL Brazil
- 4.7 Australian Conformance
- 4.8 GITEKI Japan
- 4.9 KC South Korea
- 5 Product testing
- Appendix
- A Migration between SARA modules
- B Glossary
- Related documentation
- Revision history
- Contact
SARA-R4 series - System integration manual
UBX-16029218 - R20 System description Page 18 of 129
C1-Public
Function
Pin Name
Pin No
I/O
Description
Remarks
GPIO
GPIO1
16
I/O
GPIO
1.8 V GPIO with alternatively configurable functions.
See section 1.11 for functional description.
See section 2.8 for external circuit design-in.
GPIO2
23
I/O
GPIO
1.8 V GPIO with alternatively configurable functions.
See section 1.11 for functional description.
See section 2.8 for external circuit design-in.
GPIO3
24
I/O
GPIO
1.8 V GPIO with alternatively configurable functions.
See section 1.11 for functional description.
See section 2.8 for external circuit design-in.
GPIO4
25
I/O
GPIO
1.8 V GPIO with alternatively configurable functions.
See section 1.11 for functional description.
See section 2.8 for external circuit design-in.
GPIO5
42
I/O
GPIO
1.8 V GPIO with alternatively configurable functions.
See section 1.11 for functional description.
See section 2.8 for external circuit design-in.
GPIO6
19
I/O
GPIO
1.8 V GPIO with alternatively configurable functions.
See section 1.11 for functional description.
See section 2.8 for external circuit design-in.
GNSS
PIOs
TXD_GNSS
19
47
O
GNSS data output
GNSS UART data output from internal u-blox M8 chipset.
Test-Point for diagnostic access is recommended.
See section 1.12 for functional description.
EXTINT
19
46
I
GNSS external
interrupt
GNSS external interrupt connected to u-blox M8 chipset.
See section 1.12 for functional description.
TIMEPULSE
19
45
O
GNSS Time Pulse
GNSS time pulse output driven by u-blox M8 chipset.
See section 1.12 for functional description.
ANT_ON
19
44
O
Antenna / LNA
enable
External GNSS active antenna and/or LNA on/off signal driven
by u-blox M8 chipset, connected to internal LNA.
See section 1.12 for functional description.
Reserved
RSVD
20
2
N/A
Reserved pin
Internally not connected.
See sections 1.13 and 2.10
RSVD
21
31
N/A
Reserved pin
Internally not connected.
See sections 1.13 and 2.10
RSVD
22
18,
48,49
N/A
Reserved pin
Internally not connected.
See sections 1.13 and 2.10
RSVD
23
34,35,
36,37
N/A
Reserved pin
Leave unconnected.
See sections 1.13 and 2.10
RSVD
24
44,45,
46,47
N/A
Reserved pin
Internally not connected.
See sections 1.13 and 2.10
Table 3: SARA-R4 series modules pin definition, grouped by function
19
SARA-R422M8S modules only
20
SARA-R410M, SARA-R412M modules only
21
SARA-R410M, SARA-R412M, SARA-R422, SARA-R422S modules only
22
SARA-R422, SARA-R422S, SARA-R422M8S modules only
23
SARA-R422 modules only
24
SARA-R422, SARA-R422S modules only