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 35 of 123
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1.9.3 SPI interfaces
☞ The SPI interface are not supported by the “00” product version of SARA-R5 series modules,
except for diagnostic purpose.
SARA-R5 series modules include 1.8 V Serial Peripheral Interfaces available for communications with
external SPI slave devices, or for diagnostic purpose with the module acting as SPI master.
1.9.4 SDIO interface
☞ The SDIO interface is not supported by the “00” product version of SARA-R5 series modules.
SARA-R5 series modules include a 1.8 V 4-bit Secure Digital Input Output interface over the SDIO_D0,
SDIO_D1, SDIO_D2, SDIO_D3, SDIO_CLK and SDIO_CMD pins, with the module acting as an SDIO
host, available for communications with compatible external SDIO devices, and for diagnostic
purpose.
1.9.5 DDC (I2C) interface
☞ Communication with an external GNSS receiver is not supported by SARA-R510M8S modules.
SARA-R5 series modules include a 1.8 V I2C-bus compatible DDC interface over the SDA and SCL pins,
available to communicate with an external u-blox GNSS receiver and with external I2C devices as for
example an audio codec: the SARA-R5 series module acts as an I2C master that can communicate
with I2C slaves in accordance with the I2C bus specifications [9].
The same 1.8 V I2C-bus compatible DDC interface is internally connected to the u-blox M8 GNSS
chipset integrated in SARA-R510M8S modules, as illustrated in Figure 4.
The SDA and SCL pins have internal active pull-up, so there is no need of additional pull-up resistors
on the external application board.
1.10 Audio
☞ Audio is not supported by “00” product version of SARA-R5 series modules.
SARA-R5 series modules include a 1.8 V I2S digital audio interface over the I2S_TXD, I2S_RXD,
I2S_CLK and I2S_WA pins for transferring digital audio data with an external compatible digital audio
device.