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 consumption in deep-sleep mode (low power mode and PSM enabled)
- 1.5.1.4 VCC current consumption in low power idle mode (low power mode enabled)
- 1.5.1.5 VCC current consumption in active mode (low power mode and PSM 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 (GPIO)
- 1.12 Reserved pin (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 low drop-out 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 removing VCC supply
- 2.2.1.9 Additional guidelines for VCC supply circuit design
- 2.2.1.10 Guidelines for VCC supply layout design
- 2.2.1.11 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
- 2.6.1 UART interfaces
- 2.6.1.1 Guidelines for UART circuit design
- Providing 1 UART with the full RS-232 functionality (using the complete V.24 link)
- Providing 1 UART with the TXD, RXD, RTS, CTS, DTR and RI lines only
- Providing 1 UART with the TXD, RXD, RTS and CTS lines only
- Providing 2 UARTs with the TXD, RXD, RTS and CTS lines only
- Providing 1 UART with the TXD and RXD lines only
- Providing 2 UARTs with the TXD and RXD lines only
- Additional considerations
- 2.6.1.2 Guidelines for UART layout design
- 2.6.1.1 Guidelines for UART circuit design
- 2.6.2 USB interface
- 2.6.3 SPI interfaces
- 2.6.4 SDIO interface
- 2.6.5 DDC (I2C) interface
- 2.6.1 UART interfaces
- 2.7 Audio
- 2.8 General purpose input / output (GPIO)
- 2.9 Reserved pin (RSVD)
- 2.10 Module placement
- 2.11 Module footprint and paste mask
- 2.12 Schematic for SARA-R5 series module integration
- 2.13 Design-in checklist
- 3 Handling and soldering
- 4 Approvals
- 5 Product testing
- Appendix
- A Migration between SARA modules
- B Glossary
- Related documents
- Revision history
- Contact
SARA-R5 series - System integration manual
UBX-19041356 - R03 System description Page 16 of 123
Confidential
The initial operating mode of SARA-R5 series modules is the one with VCC supply not present or below
the operating range: the modules are switched off in not-powered mode.
Once a valid VCC supply is applied to the SARA-R500S and the SARA-R510M8S modules, this event
triggers the switch on routine of the modules that subsequently enter the active mode.
Instead, once a valid VCC supply is applied to the SARA-R510S modules, they remain switched off in
power-off mode. Then the proper toggling of the PWR_ON input line is necessary to trigger the switch
on routine of the modules that subsequently enter the active mode.
SARA-R5 series modules are fully ready to operate when in active mode: the available communication
interfaces are completely functional and the module can accept and respond to any AT command,
entering connected mode upon LTE signal reception / transmission.
The internal GNSS functionality can be concurrently enabled on the SARA-R510M8S modules by the
dedicated +UGPS AT command, as well as the possible external GNSS functionality can be
concurrently enabled using SARA-R500S or SARA-R510S modules by the dedicated +UGPS AT
command.
Then, the SARA-R5 series modules switch from active mode to the low power idle mode whenever
possible, if the low power configuration is enabled by the dedicated +UPSV AT command. The low
power idle mode can last for different time periods according to the specific +UPSV AT command
setting, according to the specific +CEDRXS / +CEDRXRDP AT commands setting, and according to
the concurrent activities executed by the module, as for example according to the concurrent GNSS
activities.
Then, after having enabled the low power configuration by the dedicated +UPSV AT command,
according to the +CPSMS / +UCPSMS AT commands setting, and according to the concurrent
activities executed by the module (for example according to the concurrent GNSS activities),
whenever possible the SARA-R500S and SARA-R510M8S modules can enter the PSM deep-sleep
mode and the SARA-R510S modules can enter the ultra-low power PSM deep-sleep mode.
Once the modules enter the PSM deep-sleep mode (SARA-R500S and SARA-R510M8S modules) or
the ultra-low power PSM deep-sleep mode (SARA-R510S modules), the available communication
interfaces are not functional: a wake up event, consisting in proper toggling of the PWR_ON input line,
the expiration of the “Periodic Update Timer” set by the LTE network, or the expiration of an RTC
alarm, is necessary to trigger the wake up routine of the modules that subsequently enter back into
the active mode.
SARA-R5 series modules can be gracefully switched off by the dedicated +CPWROFF AT command,
or by proper toggling of the PWR_ON input line.
☞ See the SARA-R5 series AT commands manual [2], +UPSV, +CEDRXS, +CEDRXRDP, +CPSMS,
+UCPSMS, +UGPS, +CALA, +CPWROFF AT commands, for the possible configurations and
settings of different operating modes.