Microchip Technology ATSAMD21G17A-UUT

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series SAM D21G, Functional Safety (FuSa)
Packaging | 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 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 16K 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 -
Mounting Type Surface Mount
Supplier Device Package 45-WLCSP
Package / Case 45-XFBGA, WLCSP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATSAMD21G17A-UUT is a 32-bit ARM Cortex-M0+ microcontroller in an ultra-compact WLCSP package. It delivers 48MHz performance with 128KB flash and 16KB SRAM, operating from 1.62V to 3.6V. Integrated DMA, I2S, PWM, and brown-out detection make it ideal for low-power IoT, wearable, and portable applications.

  • Ultra-compact WLCSP package: Saves board space for miniaturized designs.
  • Low-voltage operation down to 1.62V: Extends battery life in portable devices.
  • DMA and I2S integration: Enables efficient data streaming without CPU overhead.
  • 128KB flash / 16KB SRAM: Ample memory for complex firmware.
  • Full supervisory features (POR, BOD, WDT): Enhances system reliability.

IoT Sensor Nodes

The low 1.62V minimum supply and 48MHz Cortex-M0+ core enable battery-powered environmental sensors with efficient DMA data logging.

Wearable Health Monitors

The WLCSP package minimizes PCB area, while the integrated POR and WDT ensure reliable operation in compact, power-constrained wearables.

Portable Instrumentation

With 128KB flash and I2S support, it can handle audio sampling and measurement algorithms for handheld multimeters or data loggers.

Smart Home Controllers

PWM channels and brown-out detection make it suitable for controlling LED dimmers or motorized blinds with stable power supervision.

Industrial Sensor Interfaces

The DMA controller offloads CPU for continuous ADC sampling in industrial temperature or pressure monitoring systems.

Consumer Audio Accessories

I2S peripheral allows direct interfacing with digital microphones or audio codecs for voice-controlled devices.

Q: What is the core processor of the ATSAMD21G17A-UUT?
A: It uses an ARM Cortex-M0+ core running at up to 48 MHz.
Q: What is the operating voltage range?
A: It operates from 1.62V to 3.6V, suitable for low-power designs.
Q: How much flash and RAM does it have?
A: It has 128KB flash and 16KB SRAM.
Q: What package is available?
A: It comes in a 45-ball WLCSP (XFBGA) package.
Q: Does it support DMA and I2S?
A: Yes, it includes DMA, I2S, POR, PWM, WDT, and brown-out detection.
Base Product Number : ATSAMD21G17A
32-bit MCU 48MHz ARM Cortex-M0+ DMA I2S IoT low power Microchip portable wearable WLCSP
Q: What is the core processor of the ATSAMD21G17A-UUT?
A: It uses an ARM Cortex-M0+ core running at up to 48 MHz.
Q: What is the operating voltage range?
A: It operates from 1.62V to 3.6V, suitable for low-power designs.
Q: How much flash and RAM does it have?
A: It has 128KB flash and 16KB SRAM.
Q: What package is available?
A: It comes in a 45-ball WLCSP (XFBGA) package.
Q: Does it support DMA and I2S?
A: Yes, it includes DMA, I2S, POR, PWM, WDT, and brown-out detection.