Microchip Technology ATSAMD21G18A-AUT
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $4.04 | $4.04 |
| 15+ | $3.91 | $58.65 |
| 25+ | $3.83 | $95.75 |
| 50+ | $3.61 | $180.50 |
| 100+ | $3.19 | $319.00 |
| N+ | $0.64 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | SAM D21G, Functional Safety (FuSa) |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Core Processor | ARM® Cortex®-M0+ |
| Core Size | 32-Bit Single-Core |
| Speed | 48MHz |
| Connectivity | I2C, LINbus, SPI, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT |
| Number of I/O | 38 |
| Program Memory Size | 256KB (256K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 32K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.62V ~ 3.6V |
| Data Converters | A/D 14x12b; D/A 1x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 48-TQFP (7x7) |
| Package / Case | 48-TQFP |
| ROHS |
The ATSAMD21G18A-AUT from Microchip Technology is a 32-bit ARM Cortex-M0+ microcontroller operating at 48MHz. It supports a supply voltage of 1.62V to 3.6V, with 256KB of flash and 32KB of SRAM. The 48-TQFP package includes advanced peripherals like I2S, DMA, PWM, and Brown-out Detect/Reset, making it ideal for IoT, audio, and low-power applications.
- ARM Cortex-M0+ core: Industry-standard architecture with extensive software ecosystem.
- 256KB flash / 32KB SRAM: High capacity for complex applications and data buffering.
- I2S and DMA: Enables high-fidelity audio and efficient peripheral data management.
- Ultra-low voltage (1.62V): Extends battery life in energy-harvesting and portable designs.
IoT Edge Devices
The 48MHz Cortex-M0+ and 256KB flash support MQTT stacks and sensor fusion in smart home hubs.
Audio Processing
I2S interface enables direct connection to digital microphones and codecs for voice-controlled assistants.
Wearable Health Monitors
1.62V operation allows single-cell battery use, while 32KB SRAM buffers ECG and heart-rate data.
Industrial Data Loggers
DMA transfers sensor readings to memory without CPU load, enabling high-speed sampling in vibration analysis.
Smart Agriculture
Low-power modes and wide voltage range support solar-powered soil moisture sensors in remote fields.
Consumer Robotics
48-TQFP package and PWM channels drive servo motors in educational robot kits with real-time control.
- Q: What is the core processor of the ATSAMD21G18A-AUT?
- A: It uses the ARM Cortex-M0+ 32-bit core, operating at up to 48MHz.
- Q: What is the supply voltage range?
- A: It operates from 1.62V to 3.6V, ideal for low-power and portable applications.
- Q: How much flash memory is available?
- A: It has 256KB of flash program memory and 32KB of SRAM.
- Q: What package does it come in?
- A: It is available in a 48-TQFP package.
- Q: Does it support I2S and DMA?
- A: Yes, it features I2S for audio and DMA for efficient data transfer, along with PWM, POR, and WDT.
- Q: What is the core processor of the ATSAMD21G18A-AUT?
- A: It uses the ARM Cortex-M0+ 32-bit core, operating at up to 48MHz.
- Q: What is the supply voltage range?
- A: It operates from 1.62V to 3.6V, ideal for low-power and portable applications.
- Q: How much flash memory is available?
- A: It has 256KB of flash program memory and 32KB of SRAM.
- Q: What package does it come in?
- A: It is available in a 48-TQFP package.
- Q: Does it support I2S and DMA?
- A: Yes, it features I2S for audio and DMA for efficient data transfer, along with PWM, POR, and WDT.

ATSAMD21G18A-AUT.pdf