Microchip Technology ATSAML21J18B-UUT Microcontrollers
IC MCU 32BIT 256KB FLASH 64WLCSP
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
ATSAML21J18B-UUT
Base Model
Detailed Description
IC MCU 32BIT 256KB FLASH 64WLCSP
Package
64-XFBGA, WLCSP
Lifecycle Status
Active
Datasheet
ATSAML21J18B-UUT Datasheet
Quick Jump:
Technical Specifications
Microchip Technology ATSAML21J18B-UUT Microcontrollers technical specifications.
General
Series
SAM L21J, Functional Safety (FuSa)
RAM Size
32K x 8
RoHS
Yes
Number of Pins
64
Package / Case
64-XFBGA, WLCSP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.62V ~ 3.63V
Lifecycle Status
Active
Peripherals
DMA, POR, PWM, WDT
Alternate Parts Comparison (ATSAML21J18B-UUT vs ATSAML21J17B vs ATSAML21J16B-MUT vs ATSAML21J18B-AUT)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Lifecycle Status | Active | In Production | Active | Active |
| Package / Case | 64-XFBGA, WLCSP | -- | 64-VFQFN Exposed Pad | 64-TQFP |
| Mounting Type | Surface Mount | -- | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -- | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 1.62V ~ 3.63V | -- | 1.62V ~ 3.63V | 1.62V ~ 3.63V |
| Number of Pins | 64 | -- | 64 | 64 |
| Core Processor | ARM® Cortex®-M0+ | -- | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ |
| Core Size | 32-Bit Single-Core | -- | 32-Bit Single-Core | 32-Bit Single-Core |
| RAM Size | 32K x 8 | -- | 8K x 8 | 32K x 8 |
| RoHS | Yes | -- | Yes | Yes |
| Connectivity | I²C, LINbus, SCI, SPI, UART/USART, USB | -- | I²C, LINbus, SCI, SPI, UART/USART, USB | I²C, LINbus, SCI, SPI, UART/USART, USB |
| CPU Type | Cortex-M0+ | -- | Cortex-M0+ | Cortex-M0+ |
| 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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