ATSAML21J18B-UUT vs ATSAML21J18B-AUT Comparison
Detailed side-by-side comparison of ATSAML21J18B-UUT by Microchip Technology and ATSAML21J18B-AUT by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATSAML21J18B-UUT - 256KB Flash Cortex-M0+ MCU | Microchip
ATSAML21J18B-UUT ✓ ActiveMicrochip Technology
ATSAML21J18B-AUT - 48MHz Cortex-M0+ MCU 256KB Flash | Microchip
ATSAML21J18B-AUT ✓ ActiveSpecification Comparison
| Parameter | ATSAML21J18B-UUT | ATSAML21J18B-AUT |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.78 | $4.55 |
| Core Architecture | ARM Cortex-M0+ (32-bit) | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Clock | 48 MHz | — |
| CoreMark per MHz | 2.46 CoreMark/MHz | — |
| Flash Program Memory | 256 KB | — |
| SRAM | 40 KB | 32 KB (up to 40 KB reported by some sources) |
| Supply Voltage Range | 1.6 V to 3.6 V | — |
| Operating Temperature Range | -40C to +85C (industrial) | — |
| Active Current Consumption | < 35 uA/MHz | — |
| Sleep Mode Current | 200 nA | — |
| ADC | 12-bit, up to 1 MSPS (up to 20 channels) | 12-bit |
| DAC | 10-bit | 10-bit |
| SERCOM Channels | 4 (configurable USART/I2C/SPI) | — |
| RTC | 32-bit with calendar mode | — |
| Peripheral Touch Controller (PTC) | Yes - capacitive touch support | — |
| Package | WLCSP-64 (3.0 x 3.0 mm, wafer-level chip scale) | 64-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount (chip-scale) | Surface Mount (Tape & Reel, AUT suffix) |
| Lead-Free / RoHS | Lead-free, RoHS compliant | — |
| MSL Level | [DATA_NEEDED: MSL moisture sensitivity level] | — |
| Series | — | SAM L21J, Functional Safety (FuSa) |
| Maximum CPU Frequency | — | 48 MHz |
| Program Flash | — | 256 KB (256K x 8) |
| Supply Voltage (Vcc/Vdd) | — | 1.62 V to 3.63 V |
| Operating Temperature | — | -40 C to +85 C (industrial) |
| GPIO Count | — | 51 (per SAM L21J datasheet) |
| USB | — | USB 2.0 Full-Speed Device |
| Serial Interfaces | — | Multiple SERCOM (configurable as UART/SPI/I2C) |
| Touch Peripheral (PTC) | — | Yes (Peripheral Touch Controller) |
| Active Current | — | Under 35 uA/MHz |
| Sleep Current | — | 200 nA |
| Functional Safety | — | IEC 60730 Class B (FuSa variant) |
| RoHS Status | — | Compliant |
| Carrier Type | — | Tape & Reel (AUT suffix) |