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Low-Power, 32-bit Cortex-M0+ MCU with Advanced Analog and PWM
Features
1 Description
2 Configuration Summary
3 SAM D21 Ordering Information(1)
3.1 SAM DA1 Ordering Information
4 Block Diagram
5 Pinout
5.1 SAM D21J and SAM DA1J
5.2 SAM D21GxxA/B/D and SAM DA1GxxA/B
5.3 SAM D21GxxA
5.4 SAM D21GxxL
5.5 SAM D21ExxA/B/D and SAM DA1ExxA/B
5.6 SAM D21ExxB/C/D
5.7 SAM D21ExxL
6 Signal Descriptions List
7 I/O Multiplexing and Considerations
7.1 Multiplexed Signals
7.2 Other Functions
8 Power Supply and Start-Up Considerations
8.1 Power Domain Overview
8.2 Power Supply Considerations
8.3 Power-Up
8.4 Power-On Reset and Brown-Out Detector
9 Product Mapping
10 Memories
10.1 Embedded Memories
10.2 Physical Memory Map
10.3 NVM Calibration and Auxiliary Space
11 Processor And Architecture
11.1 Cortex M0+ Processor
11.2 Nested Vector Interrupt Controller
11.3 Micro Trace Buffer
11.4 High-Speed Bus System
11.5 AHB-APB Bridge
11.6 Peripheral Access Controller (PAC)
11.7 Register Access and Behavior
12 Peripherals Configuration Summary
13 DSU - Device Service Unit
13.1 Overview
13.2 Features
13.3 Block Diagram
13.4 Signal Description
13.5 Product Dependencies
13.6 Debug Operation
13.7 Chip Erase
13.8 Programming
13.9 Intellectual Property Protection
13.10 Device Identification
13.11 Functional Description
13.12 Register Summary
13.13 Register Description
14 Clock System
14.1 Clock Distribution
14.2 Synchronous and Asynchronous Clocks
14.3 Register Synchronization
14.4 Enabling a Peripheral
14.5 Disabling a Peripheral
14.6 On-demand, Clock Requests
14.7 Power Consumption vs. Speed
14.8 Clocks after Reset
15 GCLK - Generic Clock Controller
15.1 Overview
15.2 Features
15.3 Block Diagram
15.4 Signal Description
15.5 Product Dependencies
15.6 Functional Description
15.7 Register Summary
15.8 Register Description
16 PM – Power Manager
16.1 Overview
16.2 Features
16.3 Block Diagram
16.4 Signal Description
16.5 Product Dependencies
16.6 Functional Description
16.7 Register Summary
16.8 Register Description
17 SYSCTRL – System Controller
17.1 Overview
17.2 Features
17.3 Block Diagram
17.4 Signal Description
17.5 Product Dependencies
17.6 Functional Description
17.7 Register Summary
17.8 Register Description
18 WDT – Watchdog Timer
18.1 Overview
18.2 Features
18.3 Block Diagram
18.4 Signal Description
18.5 Product Dependencies
18.6 Functional Description
18.7 Register Summary
18.8 Register Description
19 RTC – Real-Time Counter
19.1 Overview
19.2 Features
19.3 Block Diagram
19.4 Signal Description
19.5 Product Dependencies
19.6 Functional Description
19.7 Register Summary
19.8 Register Description
20 DMAC – Direct Memory Access Controller
20.1 Overview
20.2 Features
20.3 Block Diagram
20.4 Signal Description
20.5 Product Dependencies
20.6 Functional Description
20.7 Register Summary
20.8 Register Description
20.9 Register Summary - SRAM
20.10 Register Description - SRAM
21 EIC – External Interrupt Controller
21.1 Overview
21.2 Features
21.3 Block Diagram
21.4 Signal Description
21.5 Product Dependencies
21.6 Functional Description
21.7 Register Summary
21.8 Register Description
22 Nonvolatile Memory Controller (NVMCTRL)
22.1 Overview
22.2 Features
22.3 Block Diagram
22.4 Signal Description
22.5 Product Dependencies
22.6 Functional Description
22.7 Register Summary
22.8 Register Description
23 PORT - I/O Pin Controller
23.1 Overview
23.2 Features
23.3 Block Diagram
23.4 Signal Description
23.5 Product Dependencies
23.6 Functional Description
23.7 Register Summary
23.8 Register Description
24 EVSYS – Event System
24.1 Overview
24.2 Features
24.3 Block Diagram
24.4 Signal Description
24.5 Product Dependencies
24.6 Functional Description
24.7 Register Summary
24.8 Register Description
25 SERCOM – Serial Communication Interface
25.1 Overview
25.2 Features
25.3 Block Diagram
25.4 Signal Description
25.5 Product Dependencies
25.6 Functional Description
26 SERCOM USART
26.1 Overview
26.2 USART Features
26.3 Block Diagram
26.4 Signal Description
26.5 Product Dependencies
26.6 Functional Description
26.7 Register Summary
26.8 Register Description
27 SERCOM SPI – SERCOM Serial Peripheral Interface
27.1 Overview
27.2 Features
27.3 Block Diagram
27.4 Signal Description
27.5 Product Dependencies
27.6 Functional Description
27.7 Register Summary
27.8 Register Description
28 SERCOM I2C – Inter-Integrated Circuit
28.1 Overview
28.2 Features
28.3 Block Diagram
28.4 Signal Description
28.5 Product Dependencies
28.6 Functional Description
28.7 Register Summary - I2C Client
28.8 Register Description - I2C Client
28.9 Register Summary - I2C Host
28.10 Register Description - I2C Host
29 I2S - Inter-IC Sound Controller
29.1 Overview
29.2 Features
29.3 Block Diagram
29.4 Signal Description
29.5 Product Dependencies
29.6 Functional Description
29.7 I2S Application Examples
29.8 Register Summary
29.9 Register Description
30 TC – Timer/Counter
30.1 Overview
30.2 Features
30.3 Block Diagram
30.4 Signal Description
30.5 Product Dependencies
30.6 Functional Description
30.7 Register Summary for 8-bit Registers
30.8 Register Description for 8-bit Registers
30.9 Register Summary for 16-bit Registers
30.10 Register Description for 16-bit Registers
30.11 Register Summary for 32-bit Registers
30.12 Register Description for 32-bit Registers
31 TCC – Timer/Counter for Control Applications
31.1 Overview
31.2 Features
31.3 Block Diagram
31.4 Signal Description
31.5 Product Dependencies
31.6 Functional Description
31.7 Register Summary
31.8 Register Description
32 USB – Universal Serial Bus
32.1 Overview
32.2 Features
32.3 USB Block Diagram
32.4 Signal Description
32.5 Product Dependencies
32.6 Functional Description
32.7 Communication Device Host Register Summary
32.8 Communication Device Host Register Description
32.9 Device Registers - Common -Register Summary
32.10 Device Registers - Common
32.11 Device Endpoint Register Summary
32.12 Device Endpoint Register Description
32.13 Endpoint Descriptor Structure
32.14 Device Endpoint RAM Register Summary
32.15 Device Endpoint RAM Register Description
32.16 Host Registers - Common - Register Summary
32.17 Host Registers - Common - Register Description
32.18 Host Registers - Pipe - Register Summary
32.19 Host Registers - Pipe - Register Description
32.20 Pipe Descriptor Structure
32.21 Host Registers - Pipe RAM - Register Summary
32.22 Host Registers - Pipe RAM - Register Description
33 ADC – Analog-to-Digital Converter
33.1 Overview
33.2 Features
33.3 Block Diagram
33.4 Signal Description
33.5 Product Dependencies
33.6 Functional Description
33.7 Register Summary
33.8 Register Description
34 AC – Analog Comparators
34.1 Overview
34.2 Features
34.3 Block Diagram
34.4 Signal Description
34.5 Product Dependencies
34.6 Functional Description
34.7 Register Summary
34.8 Register Description
35 DAC – Digital-to-Analog Converter
35.1 Overview
35.2 Features
35.3 Block Diagram
35.4 Signal Description
35.5 Product Dependencies
35.6 Functional Description
35.7 Register Summary
35.8 Register Description
36 Peripheral Touch Controller (PTC)
36.1 Overview
36.2 Features
36.3 Block Diagram
36.4 Signal Description
36.5 System Dependencies
36.6 Functional Description
37 Electrical Characteristics at 85℃
37.1 Disclaimer
37.2 Thermal Considerations
37.3 Absolute Maximum Ratings
37.4 General Operating Ratings
37.5 Supply Characteristics
37.6 Maximum Clock Frequencies
37.7 Power Consumption
37.8 Peripheral Power Consumption
37.9 I/O Pin Characteristics
37.10 Injection Current
37.11 Analog Characteristics
37.12 NVM Characteristics
37.13 Oscillators Characteristics
37.14 PTC Typical Characteristics
37.15 USB Characteristics
37.16 Timing Characteristics
38 Electrical Characteristics at 105°C
38.1 Disclaimer
38.2 Absolute Maximum Ratings
38.3 General Operating Ratings
38.4 Maximum Clock Frequencies
38.5 Power Consumption
38.6 Analog Characteristics
38.7 NVM Characteristics
38.8 Oscillators Characteristics
38.9 PTC Characteristics at 105°C
38.10 USB Characteristics
39 Electrical Characteristics at 125°C
39.1 Disclaimer
39.2 Absolute Maximum Ratings
39.3 General Operating Ratings
39.4 Maximum Clock Frequencies
39.5 Power Consumption
39.6 Analog Characteristics
39.7 NVM Characteristics
39.8 Oscillators Characteristics
40 AEC-Q100 125°C Specifications
40.1 Disclaimer
40.2 Thermal Considerations
40.3 Absolute Maximum Ratings
40.4 General Operating Ratings
40.5 Supply Characteristics
40.6 Maximum Clock Frequencies
40.7 Power Consumption
40.8 I/O Pin Characteristics
40.9 Analog Characteristics
40.10 NVM Characteristics
40.11 Oscillator Characteristics
40.12 PTC Characteristics
41 SAM DA1 Electrical Characteristics
41.1 Disclaimer
41.2 Thermal Considerations
41.3 Absolute Maximum Ratings
41.4 Supply Characteristics
41.5 Maximum Clock Frequencies
41.6 Power Consumption
41.7 Peripheral Power Consumption
41.8 I/O Pin Characteristics
41.9 Injection Current
41.10 Analog Characteristics
41.11 NVM Characteristics
41.12 Oscillators Characteristics
41.13 PTC Typical Characteristics
41.14 USB Characteristics
41.15 Timing Characteristics
42 Appendix A
42.1 SIL 2 Enabled Functional Safety Devices
43 Appendix B
44 Packaging Information
44.1 Package Drawings
44.2 Soldering Profile
44.3 Package Markings
45 Schematic Checklist
45.1 Introduction
45.2 Power Supply
45.3 External Analog Reference Connections
45.4 External Reset Circuit
45.5 Clocks and Crystal Oscillators
45.6 Unused or Unconnected Pins
45.7 Programming and Debugging Ports
45.8 USB Interface
46 Conventions
46.1 Numerical Notation
46.2 Memory Size and Type
46.3 Frequency and Time
46.4 Registers and Bits
47 Acronyms and Abbreviations
48 Data Sheet Revision History
48.1 Revision History
48.2 Rev. O – 12/2016
48.3 Rev. N – 10/2016
48.4 Rev. M – 09/2016
48.5 Rev. L – 09/2016
48.6 Rev. K – 09/2016
48.7 Rev. J – 07/2016
48.8 Rev. I – 03/2016
48.9 Rev. H – 01/2016
48.10 Rev. G – 09/2015
48.11 Rev. F – 07/2015
48.12 Rev. E – 02/2015
48.13 Rev. D – 09/2014
48.14 Rev. C – 07/2014
48.15 Rev. B – 07/2014
48.16 Rev. A - 02/2014
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