BLUENRG-LP datasheet(67/72 Pages) STMICROELECTRONICS

67 / 72 page

Contents

Functional overview ...............................................................5

1.1

System architecture ............................................................ 5

1.2

ARM Cortex–M0+ core with MPU ................................................. 6

1.3

Memories ..................................................................... 6

1.3.1

Embedded Flash memory .................................................. 6

1.3.2

Embedded SRAM ........................................................ 7

1.3.3

Embedded ROM ......................................................... 7

1.3.4

Embedded OTP ......................................................... 7

1.3.5

Memory protection unit (MPU) .............................................. 7

1.4

Security and safety ............................................................. 7

1.5

RF subsystem ................................................................. 8

1.5.1

RF front-end block diagram................................................. 8

1.6

Power supply management ...................................................... 9

1.6.1

SMPS step-down regulator ................................................. 9

1.6.2

Power supply schemes ................................................... 11

1.6.3

Linear voltage regulators.................................................. 11

1.6.4

Power supply supervisor .................................................. 12

1.7

Operating modes.............................................................. 12

1.7.1

RUN mode ............................................................ 12

1.7.2

DEEPSTOP mode....................................................... 12

1.7.3

SHUTDOWN mode ...................................................... 13

1.8

Reset management............................................................ 13

1.9

Clock management ............................................................ 14

1.10

Boot mode ................................................................... 16

1.11

Embedded UART bootloader.................................................... 16

1.12

General purpose inputs/outputs (GPIO) .......................................... 16

1.13

Direct memory access (DMA) ................................................... 16

1.14

Nested vectored interrupt controller (NVIC) ........................................ 17

1.15

Analog digital converter (ADC) .................................................. 17

1.15.1

Digital microphone MEMS interface ......................................... 18

BlueNRG-LP

Contents

DS13282 - Rev 2

page 67/72

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