Microchip Technology ATSAMD21G18A-AUT

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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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

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.
Base Product Number : ATSAMD21G18A
256KB Flash 32-bit MCU 32KB SRAM 48MHz ARM Cortex-M0+ Audio DMA I2S IoT PWM SAMD21 TQFP-48
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.