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Low-Power, 32-bit Cortex-M0+ MCUs with 12-bit ADC, 10-bit DAC, 256-Channel PTC, RTC, and SERCOM
Features
1 Configuration Summary
2 Ordering Information (1)
3 Block Diagram
4 Pinout
4.1 SAM D20J
4.2 SAM D20G
4.3 SAM D20E
5 Signal Descriptions List
6 I/O Multiplexing and Considerations
6.1 Multiplexed Signals
6.2 Other Functions
7 Power Supply and Start-Up Considerations
7.1 Power Domain Overview
7.2 Power Supply Considerations
7.3 Power-Up
7.4 Power-On Reset and Brown-Out Detector
8 Product Mapping
9 Memories
9.1 Embedded Memories
9.2 Physical Memory Map
9.3 NVM Calibration and Auxiliary Space
9.4 NVM User Row Mapping
9.5 NVM Software Calibration Area Mapping
9.6 Serial Number
10 Processor And Architecture
10.1 Cortex M0+ Processor
10.2 Nested Vector Interrupt Controller
10.3 High-Speed Bus System
10.4 AHB-APB Bridge
10.5 PAC - Peripheral Access Controller
10.6 Register Description
11 Peripherals Configuration Summary
12 DSU - Device Service Unit
12.1 Overview
12.2 Features
12.3 Block Diagram
12.4 Signal Description
12.5 Product Dependencies
12.6 Debug Operation
12.7 Chip Erase
12.8 Programming
12.9 Intellectual Property Protection
12.10 Device Identification
12.11 Functional Description
12.12 Register Summary
12.13 Register Description
13 Clock System
13.1 Clock Distribution
13.2 Synchronous and Asynchronous Clocks
13.3 Register Synchronization
13.4 Enabling a Peripheral
13.5 Disabling a Peripheral
13.6 On-demand, Clock Requests
13.7 Power Consumption vs. Speed
13.8 Clocks after Reset
14 GCLK - Generic Clock Controller
14.1 Overview
14.2 Features
14.3 Block Diagram
14.4 Signal Description
14.5 Product Dependencies
14.6 Functional Description
14.7 Register Summary
14.8 Register Description
15 Power Manager (PM)
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 SYSCTRL – System Controller
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 WDT – Watchdog Timer
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 RTC – Real-Time Counter
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 EIC – External Interrupt Controller
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 NVMCTRL – Nonvolatile Memory 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
21 PORT - I/O Pin 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 PORT Pin Groups and Register Repetition
21.9 Register Description
22 Event System (EVSYS)
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 SERCOM – Serial Communication Interface
23.1 Overview
23.2 Features
23.3 Block Diagram
23.4 Signal Description
23.5 Product Dependencies
23.6 Functional Description
24 SERCOM USART
24.1 Overview
24.2 USART 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 SPI – SERCOM Serial Peripheral Interface
25.1 Overview
25.2 Features
25.3 Block Diagram
25.4 Signal Description
25.5 Product Dependencies
25.6 Functional Description
25.7 Register Summary
25.8 Register Description
26 SERCOM I2C – Inter-Integrated Circuit
26.1 Overview
26.2 Features
26.3 Block Diagram
26.4 Signal Description
26.5 Product Dependencies
26.6 Functional Description
26.7 Register Summary - I2C Client
26.8 Register Description - I2C Client
26.9 Register Summary - I2C Host
26.10 Register Description - I2C Host
27 TC – Timer/Counter
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 for 8-bit Registers
27.8 Register Description for 8-bit Registers
27.9 Register Summary for 16-bit Registers
27.10 Register Description for 16-bit Registers
27.11 Register Summary for 32-bit Registers
27.12 Register Description for 32-bit Registers
28 Analog-to-Digital Converter (ADC)
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
28.8 Register Description
29 AC – Analog Comparators
29.1 Overview
29.2 Features
29.3 Block Diagram
29.4 Signal Description
29.5 Product Dependencies
29.6 Functional Description
29.7 Register Summary
29.8 Register Description
30 DAC – Digital-to-Analog Converter
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
30.8 Register Description
31 PTC - Peripheral Touch Controller
31.1 Overview
31.2 Features
31.3 Block Diagram
31.4 Signal Description
31.5 System Dependencies
31.6 Functional Description
32 Electrical Characteristics at 85°C
32.1 Disclaimer
32.2 Absolute Maximum Ratings
32.3 General Operating Ratings
32.4 Supply Characteristics
32.5 Maximum Clock Frequencies
32.6 Power Consumption
32.7 Peripheral Power Consumption
32.8 I/O Pin Characteristics
32.9 Injection Current
32.10 Analog Characteristics
32.11 NVM Characteristics
32.12 Oscillators Characteristics
32.13 PTC Typical Characteristics
32.14 Timing Characteristics
33 Electrical Characteristics at 105°C
33.1 Disclaimer
33.2 Absolute Maximum Ratings
33.3 General Operating Ratings
33.4 Maximum Clock Frequencies
33.5 Power Consumption
33.6 Injection Current
33.7 Analog Characteristics
33.8 NVM Characteristics
33.9 Oscillators Characteristics
34 AEC-Q100 Electrical Characteristics at 125℃
34.1 Disclaimer
34.2 Absolute Maximum Ratings
34.3 General Operating Ratings
34.4 Supply Characteristics
34.5 Maximum Clock Frequencies
34.6 Power Consumption
34.7 Peripheral Power Consumption
34.8 I/O Pin Characteristics
34.9 Injection Current
34.10 Analog Characteristics
34.11 NVM Characteristics
34.12 Oscillators Characteristics
34.13 PTC Characteristics
34.14 Timing Characteristics
35 Packaging Information
35.1 Thermal Considerations
35.2 Package Drawings
35.3 Soldering Profile
36 Schematic Checklist
36.1 Introduction
36.2 Power Supply
36.3 External Analog Reference Connections
36.4 External Reset Circuit
36.5 Clocks and Crystal Oscillators
36.6 Unused or Unconnected Pins
36.7 Programming and Debugging Ports
37 Data Sheet Revision History
38 Conventions
38.1 Numerical Notation
38.2 Memory Size and Type
38.3 Frequency and Time
38.4 Registers and Bits
39 Acronyms and Abbreviations
40 Product Identification System
Microchip Information
Trademarks
Legal Notice
Microchip Devices Code Protection Feature