ATSAME51J18A-AF vs ATSAME51J20A-AF Comparison
Detailed side-by-side comparison of ATSAME51J18A-AF by Microchip Technology and ATSAME51J20A-AF 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
ATSAME51J18A-AF - 120MHz Cortex-M4F MCU, 256KB Flash | Microchip
ATSAME51J18A-AF ✓ ActiveMicrochip Technology
ATSAME51J20A-AF - 120MHz Cortex-M4F MCU, 1MB Flash | Microchip
ATSAME51J20A-AF ✓ ActiveSpecification Comparison
| Parameter | ATSAME51J18A-AF | ATSAME51J20A-AF |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.85 | $5.10 |
| Core | ARM Cortex-M4F with FPU and DSP | — |
| Maximum CPU Clock | 120 MHz | 120 MHz |
| Program Memory (Flash) | 256 KB dual-panel Flash with ECC | — |
| SRAM | 128 KB | 256 KB |
| Supply Voltage (VDD) | 1.71 V to 3.6 V | — |
| Operating Temperature | -40 C to +125 C (extended industrial) | -40 C to +125 C (extended) |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP, 10 mm x 10 mm, 0.5 mm pitch |
| GPIO Count | Up to 51 programmable I/O pins | — |
| ADC | 12-bit, up to 1 Msps, up to 16 channels | 1 MSPS, 12-bit, up to 16 channels |
| USB | USB 2.0 Full-Speed device/host with on-chip PHY | — |
| CAN | CAN 2.0B and CAN-FD controller | — |
| SERCOM | Configurable UART / SPI / I2C interfaces | — |
| Timers/Counters | TC blocks for capture, compare, PWM, quadrature decode | — |
| Event System | 8-channel inter-peripheral event signalling | — |
| Mounting Type | Surface Mount (TQFP) | Surface Mount (TQFP) |
| MSL Level | 3 (168 hours) | 3 (168 hours) |
| RoHS Status | Compliant | — |
| Core Architecture | — | ARM Cortex-M4F with FPU and DSP extensions |
| Program Memory | — | 1 MB (1M x 8) dual-panel Flash with ECC |
| Supply Voltage | — | 1.71 V to 3.63 V |
| DAC | — | 12-bit, 2 channels |
| Communication Interfaces | — | USB 2.0 Full-Speed, 2x CAN-FD, Ethernet MAC 10/100 with 1588, 4x SERCOM (UART/SPI/I2C), 2x I2S, 1x HS SD Card / eMMC |
| Timer/Counter | — | 5x 16-bit TC, 3x 24-bit TCC for PWM |
| DMA | — | DMAC with 32 channels + Event System |
| Memory Protection | — | TrustZone-M (optional, SAM E51 variant dependent) |
| Automotive Qualification | — | AEC-Q100 qualified |