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Microchip ARM Cortex M0+ SAM D21 Microcontroller ATSAMD21J18A-MU, 48 MHz, 256kB Flash, 64-Pin QFN
Specifications
| Country of Origin | Taiwan |
|---|---|
| Brand | Microchip |
| Height | 1mm |
| Length | 9mm |
| Model | ATSAMD21J18A-MU |
| Width | 9mm |
| Mount Type | Surface |
| Series | SAM D21 |
| Maximum Operating Temperature | 85°C |
| Package Type | QFN |
| Minimum Operating Temperature | -40°C |
| Ram size | 32kB |
| Pin Count | 64 |
| Automotive Standard | AEC-Q100 |
| Maximum Supply Voltage | 3.6V |
| Minimum Supply Voltage | 1.62V |
| Device Core | ARM Cortex M0+ |
| Program Memory Size | 256kB |
| Maximum Clock Frequency | 48MHz |
| Number of Programmable I/Os | 52 |
| Analogue Comparators | 2 |
| Number of Timers | 2 |
| Instruction Set Architecture | ARM |
| ADCs | 20 x 12 Bit |
| Program Memory Type | FLASH |
| DACs | 1 x 10 Bit |
Key Features
- Features a 32-bit ARM Cortex M0+ core for efficient processing performance.
- 256kB flash memory and 32kB SRAM enable robust program and data storage.
- Operates up to 48 MHz for real-time control and signal processing tasks.
- Integrated 64-pin QFN package suitable for high-density PCB layouts.
- Offers 52 programmable I/Os for versatile interfacing.
- Includes 1 × 10-bit DAC and 20 × 12-bit ADCs for analog integration.
- Surface mount design for reliable installation in automated production.
Product Description
Microchip ATSAMD21J18A-MU is a high-performance SAM D21 microcontroller based on the 32-bit ARM Cortex M0+ core. Designed for demanding embedded systems and industrial solutions, it leverages advanced features for efficient computation, signal processing and device control. The microcontroller’s architecture targets applications in home automation, consumer electronics, metering, and industrial automation where size, speed, and extensive peripheral support are essential.
Equipped with 256kB of flash memory and 32kB SRAM, the ATSAMD21J18A-MU supports large program and data sets, critical for dynamic firmware and data-rich environments. With a maximum clock frequency of 48 MHz, it enables responsive performance suitable for real-time operations. The device integrates a comprehensive set of peripherals, including six serial communication modules (SERCOM), 52 programmable I/Os, one 10-bit DAC, and twenty 12-bit ADCs, facilitating complex analog and digital interfacing.
The 64-pin QFN (Quad Flat No-lead) package supports compact, high-density PCB assemblies, ideal for miniaturized device designs. The surface-mount form-factor is optimized for industrial manufacturing processes. Operating reliably across a wide temperature range ( - 40°C to +85°C), the microcontroller is AEC-Q100 compliant for automotive and critical industrial use cases.
Flexible supply voltage options (1.62V minimum, 3.6V maximum) accommodate varied power architectures. The device core, ARM Cortex M0+, and 32-bit data bus width ensure high throughput while minimizing power usage, making the ATSAMD21J18A-MU suitable for portable and energy-sensitive applications. Integrated analog comparators and timers further expand application scope, supporting precision measurement and event management.
Common industrial applications include automated process control, sensor integration, industrial communication modules, metering systems, and consumer product platforms. The ATSAMD21J18A-MU is also ideal for advanced prototyping, PCB design, customized embedded solutions, and laboratory instrumentation.
Requires robust PCB design for optimal signal routing and performance. Provides reliable operation in harsh environments due to wide temperature rating. Supports surface-mount technology for scalable manufacturing. Extensive peripheral set reduces external component requirements.
Recommended for home automation, metering, industrial, and commercial electronics. Browse more Microchip Microcontrollers and advanced embedded solutions in Semiconductors & Electronics at EnvMart.
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Frequently Asked Questions
The maximum clock frequency of this microcontroller is 48 MHz, enabling efficient real-time control and signal processing tasks.
It features 256kB of flash memory and 32kB of SRAM, providing ample space for program and data storage.
The ATSAMD21J18A-MU includes 52 programmable I/Os, allowing for versatile interfacing with various peripherals.
This microcontroller is housed in a 64-pin QFN (Quad Flat No-lead) package, suitable for high-density PCB layouts.
It operates reliably within a temperature range of -40°C to +85°C, making it suitable for harsh environments.
The ATSAMD21J18A-MU requires a supply voltage between 1.62V and 3.6V, accommodating various power architectures.
It includes one 10-bit DAC and twenty 12-bit ADCs, facilitating complex analog and digital interfacing.
This microcontroller is AEC-Q100 compliant, indicating its suitability for automotive and critical industrial applications.
The microcontroller features two integrated timers, which can be used for event management and timing applications.
The dimensions of this microcontroller are 1mm in height and 9mm in width, making it compact for embedded applications.
It is recommended for applications in home automation, metering, industrial automation, and consumer electronics.
This microcontroller is based on the 32-bit ARM Cortex M0+ core, designed for efficient processing performance.
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