NXP Semiconductors QN9021 Manuals

Manuals and User Guides for NXP Semiconductors QN9021. We have 1 NXP Semiconductors QN9021 manual available for free PDF download: User Manual

NXP Semiconductors QN9021 User Manual

NXP Semiconductors QN9021 User Manual (128 pages)

Brand: NXP Semiconductors | Category: Single board computers | Size: 3 MB

Table of Contents

1 Introduction

3
2 MCU Subsystem

3
- Mcu
  3
- Nested Vectored Interrupt Controller (NVIC)
  4
- Serial Wire Debug (SWD) Interface
  5
- System Timer (SYSTICK)
  5
- System Bus
  5
- Memory Organization
  5
- Reset Management Unit (RMU)
  6
- Register Description
  7
- Register Map
  7
- Register Description
  8
3 Power Supply and Power Management Unit (PMU)

31
- Features
  31
- Power Supply
  31
- Power Management Unit (PMU)
  32
4 Analog-To-Digital Converter (ADC)

35
- Features
  35
- Function Description
  35
- ADC Input Stage
  36
- ADC Reference Voltage
  37
- ADC Clock Generation
  37
- ADC Trigger
  37
- Conversion Modes
  37
- ADC Output
  38
- ADC Power Control
  38
- Register Description
  39
- Register Map
  39
- Software Document and Example Code
  43
5 Comparator

45
- Features
  45
- Function Description
  46
- Comparator Operation
  46
- Comparator Inputs
  46
- Comparator Outputs
  47
- Comparator Configuration
  47
- Register Description
  47
6 Clock Management Unit (CMU)

50
- Clock Generation
  50
- Clock Sources
  51
- Clock Description
  52
- Pin Description
  52
- Basic Configuration
  52
- System Clock and AHB Clock Configuration
  52
- Configure APB Clock
  53
- Configure BLE Clock
  53
- Configure Peripheral Clocks
  53
- Register Description
  53
- System Clock Register Description
  53
- Crss
  53
- Crsc
  55
- Cmdcr
  56
- Stcr
  58
7 Inter-Integrated Circuit (I2C) Interface

59
- Features
  59
- Functional Description
  59
- 7-Bit Slave Address
  59
- R/Nw Bit
  60
- Ack/Nack
  60
- Data Transfer
  60
- Stop or Repeated START Signal
  60
- SCL Clock Generation in Master Mode
  60
- Master Mode Operation
  60
- Master-Transmit
  60
- Master-Receive
  61
- Slave-Transmit
  62
- Slave-Receive
  62
- Register Description
  63
- Register Map
  63
8 Pwm

66
- Features
  66
- Functional Description
  66
- Register Description
  67
- Register Map
  67
9 Real Time Clock (RTC)

70
- Features
  70
- Functional Description
  70
- Clock Accuracy Compensation
  71
- Timing Compensation
  71
- Input Capture Unit
  71
- Programming Guide
  71
- Interrupts
  71
- Register Description
  72
- Register Map
  72
10 Serial Peripheral Interface (SPI0/SPI1)

76
- Features
  76
- Functional Description
  76
- Master Mode Operation
  76
- Slave Mode Operation
  77
- Timing
  77
- Clock Generation
  77
- TX/RX Buffer
  78
- Interrupt
  78
- Register Description
  78
- Register Map
  78
- Register Description
  79
11 Timers

82
- Features
  82
- Functional Description
  82
- Clock Sources
  83
- Input Capture Unit
  83
- Compare Unit
  83
- PWM Waveform Generation
  83
- Operation Modes
  84
- Free Running Mode
  84
- Input Capture Timer Mode
  84
- Input Capture Event Mode
  84
- Input Capture Count Mode
  85
- Interrupt
  85
- Register Description
  85
- Register Map
  85
- Register Description
  86
12 Uart

90
- Features
  90
- Functional Description
  90
- Baud Rate Generation
  91
- Data Format
  93
- Hardware Flow Control
  94
- Nrts (UART Output)
  94
- Ncts (UART Input)
  94
- Interrupt
  95
- Programming Flow
  95
- Register Description
  99
- Register Map
  99
13 Watch-Dog Timer (WDT)

103
- Functional Description
  103
- Register Description
  103
- Register Map
  103
- Register Description
  104
14 Gpio

108
- Instruction
  108
- Features
  108
- Functional Description
  108
- General Purpose I/O
  108
- External Interrupt/Wakeup Lines
  109
- I/O Port W/R Control
  109
- GPIO Operation as Alternate Function
  109
- Tool for Configure GPIO
  110
- Register Description
  112
- Pin Mux Registers Description
  112
- Pin_Mux_Ctrl0
  112
- Pin_Mux_Ctrl1
  112
- Pin_Mux_Ctrl2
  113
- Pad_Drv_Ctrl
  114
- Pad_Pull_Ctrl0
  115
- Pad_Pull_Ctrl1
  116
- Io_Wakeup_Ctrl
  116
- GPIO Register Description
  117
15 Legal Information

121
- Definitions
  121
- Disclaimers
  121
- Licenses
  121
- Patents
  121
- Trademarks
  121
16 List of Figures

122
17 List of Tables

123
18 Contents

126

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