32-bit ARM-Based Microcontrollers SAM D21E / SAM D21G /SAM D21J
32KB 32K x 8 FLASH ARM® Cortex®-M0+ 32-Bit Microcontroller SAM D21E Series ATSAMD21E15 3.3V 32-TQFP









32KB 32K x 8 FLASH ARM® Cortex®-M0+ 32-Bit Microcontroller SAM D21E Series ATSAMD21E15 3.3V 32-TQFP
The SAM D21 series comprises low-power microcontrollers utilizing the 32-bit ARM Cortex-M0+ processor. These microcontrollers are designed for seamless migration, offering identical peripheral modules, compatibility in code, linear address map, and pin migration paths across the series. The SAM D21 microcontrollers include intelligent peripherals, support for capacitive touch button interfaces, and operate at a maximum frequency of 48MHz.
Product Introduction
1. Description
The SAM D21 series of microcontrollers is built on the 32-bit ARM Cortex-M0+ processor architecture, offering a range of features and capabilities suitable for a variety of applications. These microcontrollers are designed for low-power operation and provide support for intuitive migration across devices in the product series.
2. Features
The key features of the SAM D21 series include:
- ARM Cortex-M0+ CPU running at up to 48MHz
- Single-cycle hardware multiplier
- In-system self-programmable Flash memory options ranging from 32KB to 256KB
- SRAM memory options ranging from 4KB to 32KB
- Power-on reset and brown-out detection
- Internal and external clock options with Digital Frequency Locked Loop (DFLL48M) and Fractional Digital Phase Locked Loop (FDPLL96M)
- Low-power modes including idle, standby sleep, and SleepWalking peripherals
- Direct Memory Access Controller (DMAC) with 12 channels
- Event System for inter-peripheral signaling
- Support for capacitive touch button, slider, and wheel interfaces
3. Applications
The SAM D21 microcontrollers find primary applications in:
- Consumer electronics
- Internet of Things (IoT) devices
- Wearable devices
- Home automation systems
- Industrial automation
Secondary applications include:
- Smart appliances
- Sensor nodes
- Health and fitness monitors
Specific modules of this product can be applied in:
- Capacitive touch button interfaces
- Data logging systems
- Motor control applications
4. Reference Designs
The SAM D21 microcontrollers are utilized in several reference designs, including:
- IoT sensor nodes
- Smart home devices
- Industrial control systems
5. Alternative Parts
Alternative parts to the SAM D21 series include:
- SAM D10
- SAM D11
- SAM D5
- SAM E5
6. FAQs
Q: What is the maximum operating frequency of the SAM D21 microcontrollers?
A: The SAM D21 microcontrollers can operate at a maximum frequency of 48MHz.
Q: What are the primary applications of the SAM D21 microcontrollers?
A: The primary applications include consumer electronics, IoT devices, wearable devices, home automation systems, and industrial automation.
Q: What are some alternative parts to the SAM D21 series?
A: Alternative parts include SAM D10, SAM D11, SAM D5, and SAM E5.
Specifications
- TypeParameter
- Factory Lead Time23 Weeks
- Contact Plating
Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.
Tin - Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Surface Mount - Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
32-TQFP - Data ConvertersA/D 10x12b; D/A 1x10b
- Number of I/Os26
- Watchdog TimersYes
- Usage LevelAutomotive grade
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~85°C - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tape & Reel (TR) - Series
In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.
SAM D21E - Published2016
- Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Obsolete - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
3 (168 Hours) - Number of Terminations32
- HTS Code
HTS (Harmonized Tariff Schedule) codes are product classification codes between 8-1 digits. The first six digits are an HS code, and the countries of import assign the subsequent digits to provide additional classification. U.S. HTS codes are 1 digits and are administered by the U.S. International Trade Commission.
8542.31.00.01 - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
QUAD - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING - Supply Voltage
Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.
3.3V - Terminal Pitch
The center distance from one pole to the next.
0.8mm - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
ATSAMD21E15 - JESD-30 Code
JESD-30 Code refers to a standardized descriptive designation system established by JEDEC for semiconductor-device packages. This system provides a systematic method for generating designators that convey essential information about the package's physical characteristics, such as size and shape, which aids in component identification and selection. By using JESD-30 codes, manufacturers and engineers can ensure consistency and clarity in the specification of semiconductor packages across various applications and industries.
S-PQFP-G32 - Operating Supply Voltage
The voltage level by which an electrical system is designated and to which certain operating characteristics of the system are related.
3.3V - Interface
In electronic components, the term "Interface" refers to the point at which two different systems, devices, or components connect and interact with each other. It can involve physical connections such as ports, connectors, or cables, as well as communication protocols and standards that facilitate the exchange of data or signals between the connected entities. The interface serves as a bridge that enables seamless communication and interoperability between different parts of a system or between different systems altogether. Designing a reliable and efficient interface is crucial in ensuring proper functionality and performance of electronic components and systems.
I2C, I2S, SPI, UART, USART, USB - Memory Size
The memory capacity is the amount of data a device can store at any given time in its memory.
32kB - Oscillator Type
Wien Bridge Oscillator; RC Phase Shift Oscillator; Hartley Oscillator; Voltage Controlled Oscillator; Colpitts Oscillator; Clapp Oscillators; Crystal Oscillators; Armstrong Oscillator.
Internal - RAM Size
RAM size refers to the amount of random access memory (RAM) available in an electronic component, such as a computer or smartphone. RAM is a type of volatile memory that stores data and instructions that are actively being used by the device's processor. The RAM size is typically measured in gigabytes (GB) and determines how much data the device can store and access quickly for processing. A larger RAM size allows for smoother multitasking, faster loading times, and better overall performance of the electronic component. It is an important factor to consider when choosing a device, especially for tasks that require a lot of memory, such as gaming, video editing, or running multiple applications simultaneously.
4K x 8 - Voltage - Supply (Vcc/Vdd)
Voltage - Supply (Vcc/Vdd) is a key parameter in electronic components that specifies the voltage level required for the proper operation of the device. It represents the power supply voltage that needs to be provided to the component for it to function correctly. This parameter is crucial as supplying the component with the correct voltage ensures that it operates within its specified limits and performance characteristics. It is typically expressed in volts (V) and is an essential consideration when designing and using electronic circuits to prevent damage and ensure reliable operation.
1.62V~3.6V - uPs/uCs/Peripheral ICs Type
The parameter "uPs/uCs/Peripheral ICs Type" refers to the classification of various integrated circuits used in electronic devices. It encompasses microprocessors (uPs), microcontrollers (uCs), and peripheral integrated circuits that provide additional functionalities. This classification helps in identifying the specific type of chip used for processing tasks, controlling hardware, or interfacing with other components in a system. Understanding this parameter is essential for selecting the appropriate electronic components for a given application.
MICROCONTROLLER, RISC - Core Processor
The term "Core Processor" typically refers to the central processing unit (CPU) of a computer or electronic device. It is the primary component responsible for executing instructions, performing calculations, and managing data within the system. The core processor is often considered the brain of the device, as it controls the overall operation and functionality. It is crucial for determining the speed and performance capabilities of the device, as well as its ability to handle various tasks and applications efficiently. In modern devices, core processors can have multiple cores, allowing for parallel processing and improved multitasking capabilities.
ARM® Cortex®-M0+ - Peripherals
In the context of electronic components, "Peripherals" refer to devices or components that are connected to a main system or device to enhance its functionality or provide additional features. These peripherals can include input devices such as keyboards, mice, and touchscreens, as well as output devices like monitors, printers, and speakers. Other examples of peripherals include external storage devices, network adapters, and cameras. Essentially, peripherals are external devices that expand the capabilities of a main electronic system or device.
Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT - Program Memory Type
Program memory typically refers to flash memory when it is used to hold the program (instructions). Program memory may also refer to a hard drive or solid state drive (SSD). Contrast with data memory.
FLASH - Core Size
Core size in electronic components refers to the physical dimensions of the core material used in devices such as inductors and transformers. The core size directly impacts the performance characteristics of the component, including its inductance, saturation current, and frequency response. A larger core size typically allows for higher power handling capabilities and lower core losses, while a smaller core size may result in a more compact design but with limitations on power handling and efficiency. Designers must carefully select the core size based on the specific requirements of the application to achieve optimal performance and efficiency.
32-Bit - Program Memory Size
Program Memory Size refers to the amount of memory available in an electronic component, such as a microcontroller or microprocessor, that is used to store program instructions. This memory is non-volatile, meaning that the data stored in it is retained even when the power is turned off. The program memory size determines the maximum amount of code that can be stored and executed by the electronic component. It is an important parameter to consider when selecting a component for a specific application, as insufficient program memory size may limit the functionality or performance of the device.
32KB 32K x 8 - Connectivity
In electronic components, "Connectivity" refers to the ability of a component to establish and maintain connections with other components or devices within a circuit. It is a crucial parameter that determines how easily signals can be transmitted between different parts of a circuit. Connectivity can be influenced by factors such as the number of input and output ports, the type of connectors used, and the overall design of the component. Components with good connectivity are essential for ensuring reliable and efficient operation of electronic systems.
I2C, LINbus, SPI, UART/USART, USB - Bit Size
In electronic components, "Bit Size" refers to the number of bits that can be processed or stored by a particular component. A bit is the smallest unit of data in computing and can have a value of either 0 or 1. The Bit Size parameter is commonly used to describe the capacity or performance of components such as microprocessors, memory modules, and data buses. A larger Bit Size generally indicates a higher processing capability or storage capacity, allowing for more complex operations and larger amounts of data to be handled efficiently. It is an important specification to consider when selecting electronic components for specific applications that require certain levels of performance and data processing capabilities.
32 - Has ADC
Has ADC refers to the presence of an Analog-to-Digital Converter (ADC) in an electronic component. An ADC is a crucial component in many electronic devices as it converts analog signals, such as voltage or current, into digital data that can be processed by a digital system. Having an ADC allows the electronic component to interface with analog signals and convert them into a format that can be manipulated and analyzed digitally. This parameter is important for applications where analog signals need to be converted into digital form for further processing or control.
YES - DMA Channels
DMA (Direct Memory Access) Channels are a feature found in electronic components such as microcontrollers, microprocessors, and peripheral devices. DMA Channels allow data to be transferred directly between peripherals and memory without involving the CPU, thereby reducing the burden on the CPU and improving overall system performance. Each DMA Channel is typically assigned to a specific peripheral device or memory region, enabling efficient data transfer operations. The number of DMA Channels available in a system determines the concurrent data transfer capabilities and can vary depending on the specific hardware design. Overall, DMA Channels play a crucial role in optimizing data transfer efficiency and system performance in electronic devices.
YES - Data Bus Width
The data bus width in electronic components refers to the number of bits that can be transferred simultaneously between the processor and memory. It determines the amount of data that can be processed and transferred in a single operation. A wider data bus allows for faster data transfer speeds and improved overall performance of the electronic device. Common data bus widths include 8-bit, 16-bit, 32-bit, and 64-bit, with higher numbers indicating a larger capacity for data transfer. The data bus width is an important specification to consider when evaluating the speed and efficiency of a computer system or other electronic device.
32b - PWM Channels
PWM Channels, or Pulse Width Modulation Channels, refer to the number of independent PWM outputs available in an electronic component, such as a microcontroller or a motor driver. PWM is a technique used to generate analog-like signals by varying the duty cycle of a square wave signal. Each PWM channel can control the output of a specific device or component by adjusting the pulse width of the signal. Having multiple PWM channels allows for precise control of multiple devices simultaneously, making it a valuable feature in applications such as motor control, LED dimming, and audio signal generation. The number of PWM channels available in a component determines the flexibility and complexity of the system it can control.
YES - DAC Channels
DAC Channels refer to the number of independent analog output channels available in a digital-to-analog converter (DAC) electronic component. Each channel can convert a digital input signal into an analog output voltage or current. The number of DAC channels determines how many separate analog signals can be generated simultaneously by the DAC. For example, a DAC with two channels can output two different analog signals at the same time, while a DAC with only one channel can only output a single analog signal. The number of DAC channels is an important specification to consider when selecting a DAC for applications requiring multiple analog outputs.
YES - Number of Timers/Counters6
- Core Architecture
In electronic components, the term "Core Architecture" refers to the fundamental design and structure of the component's internal circuitry. It encompasses the arrangement of key components, such as processors, memory units, and input/output interfaces, within the device. The core architecture plays a crucial role in determining the component's performance, power efficiency, and overall capabilities. Different core architectures are optimized for specific applications and requirements, such as high-speed processing, low power consumption, or specialized functions. Understanding the core architecture of electronic components is essential for engineers and designers to select the most suitable components for their projects.
ARM - On Chip Program ROM Width
The parameter "On Chip Program ROM Width" refers to the data width of the read-only memory (ROM) implemented on a semiconductor chip. It indicates the number of bits that can be accessed simultaneously in each ROM read operation. A wider ROM width allows for faster data retrieval and processing, as more information can be transferred at once. This parameter is crucial in determining the overall performance and efficiency of electronic devices that utilize programmable ROM for storing firmware or application logic.
8 - Max Frequency
Max Frequency refers to the highest frequency at which an electronic component can operate effectively without degradation of performance. It is a critical parameter for devices such as transistors, capacitors, and oscillators, indicating their limitations in speed and response time. Exceeding the max frequency can lead to issues like signal distortion, heat generation, and potential failure of the component. Understanding this parameter is essential for designing circuits to ensure reliable and efficient operation.
48MHz - Length7mm
- Height Seated (Max)
Height Seated (Max) is a parameter in electronic components that refers to the maximum allowable height of the component when it is properly seated or installed on a circuit board or within an enclosure. This specification is crucial for ensuring proper fit and alignment within the overall system design. Exceeding the maximum seated height can lead to mechanical interference, electrical shorts, or other issues that may impact the performance and reliability of the electronic device. Manufacturers provide this information to help designers and engineers select components that will fit within the designated space and function correctly in the intended application.
1.2mm - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
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32-TQFP
ARM
32 b
48 MHz
26
I2C, I2S, SPI, UART, USART, USB
32 kB
3.3 V
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3.3 V
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38
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Datasheet PDF
- PCN Obsolescence/ EOL :
- PCN Packaging :
- ConflictMineralStatement :
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