Microchip Technology ATSAMD21G18A-UUT Microcontrollers
IC MCU 32BIT 256KB FLASH 45WLCSP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATSAMD21G18A-UUT
Base Model
Detailed Description
IC MCU 32BIT 256KB FLASH 45WLCSP
Package
45-XFBGA, WLCSP
Lifecycle Status
Active
Datasheet
ATSAMD21G18A-UUT Datasheet
Quick Jump:
Technical Specifications
Microchip Technology ATSAMD21G18A-UUT Microcontrollers technical specifications.
General
RAM Size
32K x 8
RoHS
Yes
Number of Pins
48
Package / Case
45-XFBGA, WLCSP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.62V ~ 3.6V
Lifecycle Status
Active
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number of I/O
38
Alternate Parts Comparison (ATSAMD21G18A-UUT vs ATSAMD21G17D-MUT vs ATSAMD21G18A-MUT vs ATSAMD21G16B-MUT)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 45-XFBGA, WLCSP | 48-VFQFN Exposed Pad | 48-VFQFN Exposed Pad | 48-VFQFN Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 1.62V ~ 3.6V | 1.62V ~ 3.63V | 1.62V ~ 3.6V | 1.62V ~ 3.6V |
| Core Processor | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ |
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core |
| RAM Size | 32K x 8 | 16K x 8 | 32K x 8 | 8K x 8 |
| Connectivity | I²C, LINbus, SPI, UART/USART, USB | I²C, LINbus, SPI, UART/USART, USB | I²C, LINbus, SPI, UART/USART, USB | I²C, LINbus, SPI, UART/USART, USB |
| Data Converters | A/D 14x12b; D/A 1x10b | A/D 14x12b; D/A 1x10b | A/D 14x12b; D/A 1x10b | A/D 14x12b; D/A 1x10b |
| Number of I/O | 38 | 38 | 38 | 38 |
| Oscillator Type | Internal | Internal | Internal | Internal |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
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