Microchip Technology ATSAMD21G18A-UUT
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $94,999.99 | $94,999.99 |
| 15+ | $91,999.99 | $1,379,999.85 |
| 25+ | $89,999.99 | $2,249,999.75 |
| 50+ | $84,999.99 | $4,249,999.50 |
| 100+ | $74,999.99 | $7,499,999.00 |
| N+ | $15,000.00 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Microchip Technology |
| Product Series | SAM D21G, Functional Safety (FuSa) |
| Packaging | | NULL |
| 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 | 45-WLCSP |
| Package / Case | 45-XFBGA, WLCSP |
| ROHS |
The ATSAMD21G18A is an ARM Cortex-M0+ microcontroller in a 45-ball WLCSP. It offers 256KB flash and 32KB SRAM with a 1.62-3.6V supply range. Integrated DMA, I2S, and PWM peripherals make it ideal for space-constrained, low-power applications. The -UUT suffix indicates the wafer-level package for compact designs.
- Ultra-compact: WLCSP saves PCB area for miniaturized products.
- Low power: 1.62V operation extends battery life in portable devices.
- Rich peripherals: I2S and DMA reduce CPU load for audio and sensor data.
- Scalable memory: 256KB flash supports complex application code.
Wearable Health Monitors
WLCSP package and 1.62V operation enable ultra-thin designs with coin-cell batteries.
IoT Sensor Nodes
ARM Cortex-M0+ with DMA efficiently handles sensor data while sleeping between reads.
Portable Audio Devices
I2S interface connects directly to audio codecs for high-fidelity playback.
Smart Home Controllers
3.6V max voltage allows direct connection to Li-ion batteries without boost converters.
Industrial Sensor Hubs
256KB flash stores calibration tables and firmware updates over-the-air.
Medical Patch Devices
Small footprint and low power enable disposable, single-use diagnostic patches.
- Q: What core does it use?
- A: ARM Cortex-M0+ at 48MHz.
- Q: Supply voltage range?
- A: 1.62V to 3.6V, suitable for battery operation.
- Q: Package type?
- A: 45-ball WLCSP (wafer-level chip scale).
- Q: Memory size?
- A: 256KB flash and 32KB SRAM.
- Q: Does it support I2S?
- A: Yes, for digital audio interfaces.
- Q: What core does it use?
- A: ARM Cortex-M0+ at 48MHz.
- Q: Supply voltage range?
- A: 1.62V to 3.6V, suitable for battery operation.
- Q: Package type?
- A: 45-ball WLCSP (wafer-level chip scale).
- Q: Memory size?
- A: 256KB flash and 32KB SRAM.
- Q: Does it support I2S?
- A: Yes, for digital audio interfaces.

ATSAMD21G18A-UUT.pdf