SARA-R4 series - Data sheet

UBX-16024152 - R18

Page 3 of 43

Contents

Document information................................................................................................................................2

Contents ..........................................................................................................................................................3

1

Functional description .........................................................................................................................5

1.1 Overview........................................................................................................................................................5

1.2 Product features .........................................................................................................................................5

1.3 Block diagram .............................................................................................................................................. 6

1.4 Product description .................................................................................................................................... 7

1.5 AT command support ................................................................................................................................ 9

1.6 Supported features .................................................................................................................................... 9

2 Interfaces ................................................................................................................................................11

2.1 Power management .................................................................................................................................. 11

2.1.1

Module supply input (VCC) .............................................................................................................. 11

2.1.2

Generic digital interfaces supply output (V_INT)........................................................................ 11

2.2 Antenna interface ...................................................................................................................................... 11

2.2.1

Antenna RF interface (ANT)............................................................................................................ 11

2.2.2 Antenna detection (ANT_DET) ....................................................................................................... 11

2.3 System functions....................................................................................................................................... 11

2.3.1

Module power-on ............................................................................................................................... 11

2.3.2 Module power-off...............................................................................................................................12

2.3.3 Module reset .......................................................................................................................................12

2.4 SIM ................................................................................................................................................................12

2.4.1

SIM interface ......................................................................................................................................12

2.4.2 SIM detection .....................................................................................................................................12

2.5 Serial communication ...............................................................................................................................12

2.5.1

UART interface.................................................................................................................................. 13

2.5.2 USB interface..................................................................................................................................... 13

2.5.3 SPI interface ...................................................................................................................................... 14

2.5.4 SDIO interface ................................................................................................................................... 14

2.5.5 DDC (I2C) interface........................................................................................................................... 14

2.6 Audio............................................................................................................................................................ 15

2.7 GPIO ............................................................................................................................................................. 15

3 Pin definition ......................................................................................................................................... 16

3.1 Pin assignment.......................................................................................................................................... 16

4 Electrical specifications ................................................................................................................... 20

4.1 Absolute maximum rating.......................................................................................................................20

4.1.1

Maximum ESD...................................................................................................................................20

4.2 Operating conditions.................................................................................................................................21

4.2.1

Operating temperature range.........................................................................................................21

4.2.2 Thermal parameters .........................................................................................................................21

4.2.3 Supply/power pins ............................................................................................................................22