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