BLUENRG-2 datasheet(2/190 Pages) STMICROELECTRONICS

2 / 190 page

Contents

BlueNRG-2

2/190

DocID030675 Rev 2

Contents

Description..................................................................................... 11

BlueNRG-2 Bluetooth low energy stack ...................................... 13

Functional details .......................................................................... 15

3.1

Core ................................................................................................ 15

3.2

Interrupts ......................................................................................... 15

3.3

Memories ........................................................................................ 16

3.4

Power management ........................................................................ 17

3.4.1

States description ............................................................................. 17

3.4.2

Power saving strategy ...................................................................... 18

3.4.3

System controller registers ............................................................... 19

3.5

Clocks and reset management........................................................ 21

3.5.1

Reset management .......................................................................... 23

3.5.2

Reset and wakeup reason decoding ................................................ 25

3.5.3

Switching to external clock ............................................................... 26

3.5.4

Clock and reset registers.................................................................. 26

3.6

ADC ................................................................................................ 31

3.6.1

Introduction ....................................................................................... 31

3.6.2

Functional overview.......................................................................... 31

3.6.3

ADC registers ................................................................................... 35

3.7

DMA ................................................................................................ 39

3.7.1

Introduction ....................................................................................... 39

3.7.2

Functional overview.......................................................................... 39

3.7.3

DMA registers ................................................................................... 46

3.8

SPI .................................................................................................. 56

3.8.1

Introduction ....................................................................................... 56

3.8.2

Functional overview.......................................................................... 56

3.8.3

SPI registers ..................................................................................... 61

3.9

UART .............................................................................................. 68

3.9.1

Introduction ....................................................................................... 68

3.9.2

Functional description....................................................................... 68

3.9.3

UART registers ................................................................................. 76

3.10

I²C ................................................................................................... 89

3.10.1

Introduction ....................................................................................... 89

3.10.2

Functional description....................................................................... 90

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