ATSAMD21G15A-MU Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip ATSAMD21G15A-MU is a 32-bit ARM Cortex-M0+ microcontroller running up to 32 MHz with 32 KB Flash and 4 KB SRAM in a 48-pin QFN package. Integrates ADC, DAC, DMA, and multiple serial interfaces for embedded control. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 49
- Lifecycle
- ACTIVE
- Datasheet
- ATSAMD21G15A-MU Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- ARM Cortex-M0+ core at up to 32 MHz with single-cycle hardware multiply for efficient 32-bit embedded processing
- 32 KB Flash and 4 KB SRAM with integrated 12-bit ADC, DAC channels, and multi-channel DMA controller
- 48-pin QFN package with rich peripheral set including SPI, I2C, UART, and USB for compact IoT and control designs
Applications
The ATSAMD21G15A-MU is well suited for low-power IoT sensor nodes, wearable electronics, and industrial control panels where a 32-bit Cortex-M0+ core running at 32 MHz provides sufficient compute performance within tight energy budgets. Its integrated USB interface and multiple serial peripherals simplify firmware-update and communication circuit design in consumer and maker platforms. The 48-pin QFN footprint enables compact PCB designs for motor control, data logging, and human-interface device applications.
Specifications
| Date Of Intro | 2017-02-01 |
| YTEOL | 8.38 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | YES |
| CPU Family | Cortex-M0+ |
| Clock Frequency-Max | 32MHz |
| DAC Channels | YES |
| DMA Channels | YES |
| Format | FIXED POINT |
| Integrated Cache | YES |
| JESD-30 Code | S-XQCC-N48 |
| Low Power Mode | YES |
| Number of DMA Channels | 12 |
| Number of External Interrupts | 16 |
| Number of I/O Lines | 38 |
| Number of Serial I/Os | 8 |
| Number of Timers | 6 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | UNSPECIFIED |
| Package Equivalence Code | LCC48,.27SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| RAM (bytes) | 4096 |
| ROM (words) | 32768 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 48MHz |
| Supply Current-Max | 7mA |
| Supply Voltage-Max | 3.63V |
| Supply Voltage-Min | 1.62V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| ## ATSAMD21G15A-MU Alternates Showing results | Image |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ATSAMD21G15A-MU:
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Frequently Asked Questions
How does the ATSAMD21G15A-MU perform compared to an 8-bit AVR at the same 32 MHz clock?
The ATSAMD21G15A-MU runs a 32-bit ARM Cortex-M0+ core at up to 32 MHz, enabling it to execute 32-bit arithmetic and memory operations in a single cycle, whereas an 8-bit AVR at 32 MHz requires multiple cycles for equivalent 32-bit operations. This advantage is particularly significant in signal processing tasks involving 16-bit or 32-bit fixed-point math, where the SAMD21 can complete the same computation in roughly 4 times fewer clock cycles than an 8-bit core.
Which serial interfaces are available on the ATSAMD21G15A-MU for connecting sensors and displays?
The ATSAMD21G15A-MU features up to 6 SERCOM modules each configurable as SPI, I2C, or UART, providing flexible multi-protocol connectivity from a single silicon peripheral type. Additionally, it includes a full-speed USB 2.0 interface for device or host operation at 12 Mbps, enabling direct USB connectivity to a host PC without an external USB bridge chip.
Is the ATSAMD21G15A-MU suitable for battery-powered designs needing sub-milliamp idle current?
Yes, the ATSAMD21G15A-MU is designed for low-power operation with a standby current of approximately 5 µA and active current around 2.4 mA at 32 MHz from a 3.3 V supply. Its multiple sleep modes, including Idle and Standby, allow the Cortex-M0+ core to power down while peripheral DMA continues sensor data transfers, extending battery life significantly in wearable and IoT designs running from a 3 V coin cell or LiPo battery.
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