Datasheet Summary SAM D21E, SAM D21G, SAM D21J (Microchip) - 5

32-bit ARM-Based Microcontrollers 1. Description
The SAM D21 is a series of low-power microcontrollers using the 32-bit ARM® Cortex®-M0+ processor, and ranging from 32- to 64-pins with up to 256KB Flash and 32KB of SRAM. The SAM D21 operate at a maximum frequency of 48MHz and reach 2.46 CoreMark/MHz. They are designed for simple and intuitive migration with identical peripheral modules, hex compatible code, identical linear address map and pin compatible migration paths between all devices in the product series. All devices include intelligent and flexible peripherals, Event System for inter-peripheral signaling, and support for capacitive touch button, slider and wheel user interfaces. The SAM D21 provide the following features: In-system programmable Flash, twelve-channel direct memory access (DMA) controller, 12 channel Event System, programmable interrupt controller, up to 52 programmable I/O pins, 32-bit real-time clock and calendar, up to five 16-bit Timer/Counters (TC) and three 24-bit Timer/Counters for Control (TCC), where each TC can be configured to perform frequency and waveform generation, accurate program execution timing or input capture with time and frequency measurement of digital signals. The TCs can operate in 8- or 16-bit mode, selected TCs can be cascaded to form a 32-bit TC, and three timer/counters have extended functions optimized for motor, lighting and other control applications. The series provide one full-speed USB 2.0 embedded host and device interface; up to six Serial Communication Modules (SERCOM) that each can be configured to act as an USART, UART, SPI, I2C up to 3.4MHz, SMBus, PMBus, and LIN slave; two-channel I2S interface; up to twenty-channel 350ksps 12-bit ADC with programmable gain and optional oversampling and decimation supporting up to 16-bit resolution, one 10-bit 350ksps DAC, two analog comparators with window mode, Peripheral Touch Controller supporting up to 256 buttons, sliders, wheels and proximity sensing; programmable Watchdog Timer, brown-out detector and power-on reset and two-pin Serial Wire Debug (SWD) program and debug interface. All devices have accurate and low-power external and internal oscillators. All oscillators can be used as a source for the system clock. Different clock domains can be independently configured to run at different frequencies, enabling power saving by running each peripheral at its optimal clock frequency, and thus maintaining a high CPU frequency while reducing power consumption. The SAM D21 have two software-selectable sleep modes, idle and standby. In idle mode the CPU is stopped while all other functions can be kept running. In standby all clocks and functions are stopped expect those selected to continue running. The device supports SleepWalking. This feature allows the peripheral to wake up from sleep based on predefined conditions, and thus allows the CPU to wake up only when needed, e.g. when a threshold is crossed or a result is ready. The Event System supports synchronous and asynchronous events, allowing peripherals to receive, react to and send events even in standby mode. The Flash program memory can be reprogrammed in-system through the SWD interface. The same interface can be used for non-intrusive on-chip debug of application code. A boot loader running in the device can use any communication interface to download and upgrade the application program in the Flash memory. The SAM D21 microcontrollers are supported with a full suite of program and system development tools, including C compilers, macro assemblers, program debugger/simulators, programmers and evaluation kits. © 2017 Microchip Technology Inc.
Datasheet Summary
40001884A-page 5 Document Outline Introduction Features Table of Contents 1. Description 2. Configuration Summary 3. Ordering Information 3.1. SAM D21E 3.2. SAM D21G 3.3. SAM D21J 3.4. Device Identification 4. Block Diagram 5. Pinout 5.1. SAM D21J 5.1.1. QFN64 / TQFP64 5.1.2. UFBGA64 5.2. SAM D21G 5.2.1. QFN48 / TQFP48 5.2.2. WLCSP45 5.3. SAM D21E 5.3.1. QFN32 / TQFP32 5.3.2. WLCSP35 6. Product Mapping 7. Processor And Architecture 7.1. Cortex M0+ Processor 7.1.1. Cortex M0+ Configuration 7.1.2. Cortex-M0+ Peripherals 7.1.3. Cortex-M0+ Address Map 7.1.4. I/O Interface 7.1.4.1. Overview 7.1.4.2. Description 7.2. Nested Vector Interrupt Controller 7.2.1. Overview 7.2.2. Interrupt Line Mapping 7.3. Micro Trace Buffer 7.3.1. Features 7.3.2. Overview 7.4. High-Speed Bus System 7.4.1. Features 7.4.2. Configuration 7.4.3. SRAM Quality of Service 7.5. AHB-APB Bridge 7.6. PAC - Peripheral Access Controller 7.6.1. Overview 7.6.2. Register Description 7.6.2.1. PAC0 Register Description 7.6.2.1.1. Write Protect Clear 7.6.2.1.2. Write Protect Set 7.6.2.2. PAC1 Register Description 7.6.2.2.1. Write Protect Clear 7.6.2.2.2. Write Protect Set 7.6.2.3. PAC2 Register Description 7.6.2.3.1. Write Protect Clear 7.6.2.3.2. Write Protect Set 8. Packaging Information 8.1. Thermal Considerations 8.1.1. Thermal Resistance Data 8.1.2. Junction Temperature 8.2. Package Drawings 8.2.1. 64 pin TQFP 8.2.2. 64 pin QFN 8.2.3. 64-ball UFBGA 8.2.4. 48 pin TQFP 8.2.5. 48 pin QFN 8.2.6. 45-ball WLCSP 8.2.7. 32 pin TQFP 8.2.8. 32 pin QFN 8.2.9. 35 ball WLCSP (Device Variant B) 8.2.10. 35 ball WLCSP (Device Variant C) 8.3. Soldering Profile The Microchip Web Site Customer Change Notification Service Customer Support Product Identification System Microchip Devices Code Protection Feature Legal Notice Trademarks Quality Management System Certified by DNV Worldwide Sales and Service