ATSAMD21J18A-AF vs ATSAMD20J18A-AU Comparison
Detailed side-by-side comparison of ATSAMD21J18A-AF by Microchip Technology and ATSAMD20J18A-AU 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
ATSAMD21J18A-AF - 48MHz Cortex-M0+ 256KB Flash MCU | Microchip
ATSAMD21J18A-AF β ActiveMicrochip Technology
ATSAMD20J18A-AU - ARM Cortex-M0+ MCU, 256KB Flash | Microchip
ATSAMD20J18A-AU β ActiveSpecification Comparison
| Parameter | ATSAMD21J18A-AF | ATSAMD20J18A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.91 | $2.15 |
| Core | ARM Cortex-M0+ (32-bit RISC) | ARM Cortex-M0+ (ARMv6-M, 32-bit) |
| Series | SAM D21J (Functional Safety / FuSa) | β |
| Maximum Clock Frequency | 48 MHz | 48 MHz |
| CoreMark Performance | 2.46 CoreMark/MHz | β |
| Flash Memory | 256 KB (256K x 8) | 256 KB |
| SRAM | 32 KB | 32 KB |
| Supply Voltage (VDDIN) | 1.6 V to 3.6 V | β |
| Operating Temperature | -40C to +125C (industrial, AF suffix) | β |
| Package | 64-pin TQFP (10x10 mm) | 64-LQFP (10x10 mm) |
| GPIO Count | Up to 52 | β |
| ADC | 12-bit, up to 350 ksps, 20 channels, hardware oversampling | 12-bit, up to 200 ksps |
| DAC | 12-bit, 1 Msps, 1 channel | 10-bit |
| Analog Comparators | 2 | β |
| SERCOM Modules | 6 (each configurable as UART/SPI/I2C) | β |
| USB | USB 2.0 Full-Speed Device & Host, with on-chip transceiver | Full-Speed USB 2.0 Device |
| Timers (TC/TCC) | TC x5, TCC x3 (16-/24-bit) | β |
| Event System Channels | 12 channels for inter-peripheral signaling | β |
| RTC | 32.768 kHz RTC with calendar mode | β |
| Mounting Type | Surface Mount | Surface Mount (LQFP) |
| MSL Level | 3 (per JEDEC J-STD-020) | 3 |
| RoHS Status | Compliant (Green, Pb-free) | Compliant |
| Operating Voltage Range | β | 1.62 V to 3.6 V |
| Programmable I/O Pins | β | Up to 52 |
| SERCOM Interfaces | β | Up to 8 (UART/SPI/I2C/LIN configurable) |
| Timer/Counters | β | Six 16-bit TC, one 24-bit TC, one 32-bit RTC |
| DMA Channels | β | 2 (with 12 channels) |
| Operating Temperature Range | β | -40 C to +85 C |