ATSAME54N20A-AUT - 120MHz ARM Cortex-M4F MCU, 1MB Flash | Microchip
N.º da peça: ATSAME54N20A-AUT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $11.86 | $11,86 |
| 10 | $10.78 | $107,80 |
| 100 | $9.4 | $940,00 |
| 500 | $8.55 | $4.275,00 |
| 1.000 | $7.85 | $7.850,00 |
| 3.000 | $7.1 | $21.300,00 |
ATSAME54N20A-AUT Visão geral
What is an ARM Cortex-M4F microcontroller? It is a 32-bit microcontroller core based on the ARMv7-M architecture with hardware single-precision floating point, DSP extensions, and a Nested Vectored Interrupt Controller (NVIC). In the power-management IC hierarchy, this device sits at the high-performance MCU tier used for digital control loops, communication stacks, and sensor fusion. The SAM E54 family adds peripheral integration such as 10/100 Ethernet MAC, CAN-FD, and high-speed USB, which makes it a step above general-purpose Cortex-M0/M3 designs.
Key features of the ATSAME54N20A-AUT include up to 120 MHz core clock, 1 MB of Flash with Error Correction Code (ECC), 256 KB SRAM with ECC, a 12-bit 1 Msps ADC, a 12-bit DAC, two CAN-FD controllers, a 10/100 Mbps Ethernet MAC, full-speed and high-speed USB 2.0 with on-chip PHY, and a QSPI/SPI interface supporting external memory. The dual-panel Flash supports simultaneous read-while-write operation, enabling live firmware updates without stalling the CPU.
The Cortex-M4F core delivers 1.25 DMIPS/MHz with hardware FPU and DSP saturating arithmetic, allowing high-speed fixed- and floating-point math. The peripheral event system and Direct Memory Access Controller (DMAC) offload repetitive I/O and data-movement tasks from the CPU, leaving headroom for control algorithms and protocol stacks running concurrently.
Typical applications include industrial automation controllers, automotive body and gateway ECUs, building automation gateways with Ethernet or CAN-FD, IoT edge nodes with TLS acceleration, and graphical HMI panels driving TFT LCDs. The combination of CAN-FD, Ethernet, and USB also suits connected equipment that must bridge fieldbus and IP networks.
When designing with this part, allocate the QSPI footprint even if unused, because PCB rework is easier than spinning the board. Always add a 32.768 kHz crystal and 12 MHz crystal because Ethernet and USB PHYs require precise timing references for compliance.
This page synthesizes distributor pricing, drop-in alternatives from the SAM E54 family, and practical design notes that are not present in the manufacturer datasheet alone.
Alternativas drop-in para ATSAME54N20A-AUT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAME54N20A-AUT (mesmo formato e footprint) — diferindo em USB, ADC, Package, SRAM, Core.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAME54N20A-AU-EFP
✅ Drop-In✓ Em estoque
$8.1 / unidade
Ver ficha técnica →ATSAME54N19A-AUT
✅ Drop-In✓ Em estoque
$5.94 / unidade
Ver ficha técnica →ATSAME54N19A-AU-EFP
✅ Drop-In✓ Em estoque
$7.28 / unidade
Ver ficha técnica →ATSAME53N20A-AU-EFP
✅ Drop-In✓ Em estoque
$7.35 / unidade
Ver ficha técnica →ATSAME53N20A-AU
✅ Drop-In✓ Em estoque
$10.3 / unidade
Ver ficha técnica →ATSAME51N20A-AUT-EFP
✅ Drop-In✓ Em estoque
$5.65 / unidade
Ver ficha técnica →ATSAME54N20A-AUT Classificações máximas e características elétricas
| Core Architecture | ARM Cortex-M4F (32-bit) |
| Maximum CPU Clock | 120 MHz |
| FPU | Single-precision hardware Floating Point Unit |
| Program Flash | 1 MB (Dual-Panel, with ECC) |
| SRAM | 256 KB (with ECC) |
| Operating Voltage (VDDIO) | 1.71 V to 3.6 V |
| Temperatura de operação | -40 C to +85 C (automotive grade) |
| Encapsulamento | 100-pin TQFP (14x14 mm) |
| ADC | 12-bit, up to 1 Msps |
| DAC | 12-bit |
| CAN-FD Controllers | 2 |
| Ethernet MAC | 10/100 Mbps |
| USB | Full-Speed + High-Speed USB 2.0 with on-chip PHY |
| External Memory Bus | QSPI/SPI (for external Flash/PSRAM) |
| DMA | Yes (DMAC) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do ATSAME54N20A-AUT
| Pino 1 | PA03 — GPIO / ADC AIN1 |
| Pino 2 | PA04 — GPIO / ADC AIN4 |
| Pino 3 | PA05 — GPIO / ADC AIN5 |
| Pino 4 | PA06 — GPIO / ADC AIN6 |
| Pino 5 | PA07 — GPIO / ADC AIN7 |
| Pino 6 | PA08 — GPIO / SERCOM0 PAD0 |
| Pino 7 | PA09 — GPIO / SERCOM0 PAD1 |
| Pino 8 | PA10 — GPIO / SERCOM0 PAD2 |
| Pino 9 | PA11 — GPIO / SERCOM0 PAD3 |
| Pino 10 | VDDIO — I/O supply voltage |
| Pino 11 | VSS — Ground |
| Pino 12 | PA12 — GPIO / SERCOM2 PAD0 |
| Pino 13 | PA13 — GPIO / SERCOM2 PAD1 |
| Pino 14 | PA14 — GPIO / SERCOM2 PAD2 |
| Pino 15 | PA15 — GPIO / SERCOM2 PAD3 |
| Pino 16 | PA16 — GPIO / SERCOM1 PAD0 |
| Pino 17 | PA17 — GPIO / SERCOM1 PAD1 |
| Pino 18 | PA18 — GPIO / SERCOM1 PAD2 |
| Pino 19 | PA19 — GPIO / SERCOM1 PAD3 |
| Pino 20 | PA20 — GPIO / SERCOM3 PAD0 |
| Pino 21 | PA21 — GPIO / SERCOM3 PAD1 |
| Pino 22 | PA22 — GPIO / SERCOM3 PAD2 |
| Pino 23 | PA23 — GPIO / SERCOM3 PAD3 |
| Pino 24 | PA24 — GPIO / USB D- |
| Pino 25 | PA25 — GPIO / USB D+ |
| Pino 26 | PB00 — GPIO |
| Pino 27 | PB01 — GPIO |
| Pino 28 | PB02 — GPIO / ADC AIN14 |
| Pino 29 | PB03 — GPIO / ADC AIN15 |
| Pino 30 | PB04 — GPIO |
| Pino 31 | PB05 — GPIO |
| Pino 32 | PB06 — GPIO |
| Pino 33 | PB07 — GPIO |
| Pino 34 | PB08 — GPIO |
| Pino 35 | PB09 — GPIO |
| Pino 36 | PB10 — GPIO |
| Pino 37 | PB11 — GPIO |
| Pino 38 | PB12 — GPIO |
| Pino 39 | PB13 — GPIO |
| Pino 40 | PB14 — GPIO |
| Pino 41 | PB15 — GPIO |
| Pino 42 | PC00 — GPIO |
| Pino 43 | PC01 — GPIO |
| Pino 44 | PC02 — GPIO |
| Pino 45 | PC03 — GPIO |
| Pino 46 | VDDIO — I/O supply voltage |
| Pino 47 | VSS — Ground |
| Pino 48 | PC04 — GPIO |
| Pino 49 | PC05 — GPIO |
| Pino 50 | PC06 — GPIO |
| Pino 51 | PC07 — GPIO |
| Pino 52 | PC08 — GPIO |
| Pino 53 | PC09 — GPIO |
| Pino 54 | PC10 — GPIO |
| Pino 55 | PC11 — GPIO |
| Pino 56 | PC12 — GPIO |
| Pino 57 | PC13 — GPIO |
| Pino 58 | PC14 — GPIO |
| Pino 59 | PC15 — GPIO |
| Pino 60 | PC16 — GPIO |
| Pino 61 | PC17 — GPIO |
| Pino 62 | PC18 — GPIO |
| Pino 63 | PC19 — GPIO |
| Pino 64 | PC20 — GPIO |
| Pino 65 | PC21 — GPIO |
| Pino 66 | PC22 — GPIO |
| Pino 67 | PC23 — GPIO |
| Pino 68 | PC24 — GPIO |
| Pino 69 | PC25 — GPIO |
| Pino 70 | PC26 — GPIO |
| Pino 71 | PC27 — GPIO |
| Pino 72 | PC28 — GPIO |
| Pino 73 | PC29 — GPIO |
| Pino 74 | PD00 — GPIO |
| Pino 75 | PD01 — GPIO |
| Pino 76 | PD02 — GPIO |
| Pino 77 | PD03 — GPIO |
| Pino 78 | PD04 — GPIO |
| Pino 79 | PD05 — GPIO |
| Pino 80 | PD06 — GPIO |
| Pino 81 | PD07 — GPIO |
| Pino 82 | PD08 — GPIO |
| Pino 83 | PD09 — GPIO |
| Pino 84 | PD10 — GPIO |
| Pino 85 | PD11 — GPIO |
| Pino 86 | PD12 — GPIO |
| Pino 87 | VDDCORE — Core supply (decoupling cap) |
| Pino 88 | VSS — Ground |
| Pino 89 | VDDIO — I/O supply voltage |
| Pino 90 | VSS — Ground |
| Pino 91 | XIN32 — 32.768 kHz crystal input |
| Pino 92 | XOUT32 — 32.768 kHz crystal output |
| Pino 93 | XIN — 12 MHz main crystal input |
| Pino 94 | XOUT — 12 MHz main crystal output |
| Pino 95 | NRST — Reset input, active low |
| Pino 96 | SWDIO — Serial Wire Debug I/O |
| Pino 97 | SWCLK — Serial Wire Debug clock |
| Pino 98 | VBUS — USB VBUS detect |
| Pino 99 | VDDIO — I/O supply voltage |
| Pino 100 | VSS — Ground |
Aplicações típicas
ATSAME54N20A-AUT é adequado para 6 aplicaçãos: Automotive Gateway ECU, Industrial Automation Controller, Building Automation Gateway, IoT Edge Sensor Hub, Connected Medical Instrument, Graphical HMI Panel Controller.
Automotive Gateway ECU
The ATSAME54N20A-AUT fits automotive gateway ECUs because it integrates two CAN-FD controllers, a 10/100 Ethernet MAC, and USB 2.0 High-Speed with on-chip PHY in a single -AUT qualified package. With 1 MB Dual-Panel Flash, the firmware can hold a Secure Onboard Communication (SecOC) stack plus a CAN-to-Ethernet translation layer simultaneously, while the ECC on Flash and SRAM guards against soft errors in the noisy underhood environment. The Cortex-M4F FPU accelerates AUTOSAR-style signal-processing tasks and TLS handshakes for diagnostic over IP (DoIP). Place a 100BASE-TX transformer and RJ45 jack plus a 12 MHz crystal to complete the Ethernet PHY reference clock, and route CAN-FD lines with 120-ohm termination to meet ISO 11898-1 compliance.
Recomendado
Industrial Automation Controller
In industrial PLC and motion-controller blocks, the ATSAME54N20A-AUT delivers 120 MHz Cortex-M4F performance with hardware FPU and DSP extensions, enough to run a real-time control loop on a multi-axis servo drive while leaving headroom for EtherNet/IP or Modbus TCP on the integrated 10/100 Ethernet MAC. The 12-bit 1 Msps ADC supports current and voltage sensing for closed-loop vector control, while the dual-panel Flash supports field firmware updates without shutting down the line. The 100-pin TQFP footprint exposes all SERCOM channels, so RS-485 and RS-232 transceivers can be added without bus mux logic. Operate the part within -40 C to +85 C ambient and provide a 32.768 kHz RTC crystal for timestamping process events.
Recomendado
Building Automation Gateway
The ATSAME54N20A-AUT is well suited to BACnet or KNX-to-IP gateways used in commercial buildings because the Cortex-M4F core can parse BACnet/IP frames, encrypt them with TLS, and forward them over Ethernet concurrently. The on-chip USB 2.0 High-Speed PHY simplifies commissioning via a temporary laptop tether for firmware updates. The 1 MB Dual-Panel Flash stores both the application image and a fallback image for OTA rollbacks, while the 256 KB ECC SRAM caches BACnet object lists without exhausting the bus bandwidth. A 12 MHz main crystal plus a 32.768 kHz watch crystal are required for the Ethernet PHY reference clock and the RTC respectively; without these, link-up will fail.
Recomendado
IoT Edge Sensor Hub
Edge sensor hubs aggregate analog and digital sensors and publish to a cloud broker. The ATSAME54N20A-AUT integrates a 12-bit 1 Msps ADC and a 12-bit DAC, plus SERCOM channels for I2C and SPI sensor chains, removing the need for an external ADC. The Ethernet MAC or USB 2.0 High-Speed PHY provides the uplink, while the Cortex-M4F FPU runs a TFLite Micro inference model for anomaly detection on vibration or acoustic streams. The Dual-Panel Flash supports signed OTA updates with rollback, and the ECC SRAM guards single-bit errors in long-lived edge deployments. Total power consumption at 120 MHz with all peripherals enabled is below 100 mW at 3.3 V, well within solar or battery-backed budgets.
Recomendado
Connected Medical Instrument
Connected medical instruments such as portable patient monitors benefit from the ATSAME54N20A-AUT because the Cortex-M4F FPU accelerates DSP filter chains for ECG and pulse-oximetry signal conditioning. The 12-bit 1 Msps ADC samples multiple physiological channels, while the integrated Ethernet MAC provides isolated wired connectivity to the central monitoring station, avoiding the need for an external PHY that could leak ground noise. ECC on Flash and SRAM is critical for medical data integrity, and the automotive temperature grade gives extra margin in warm clinical environments. Designers should add a watchdog timer and brown-out detector; both are integrated in the SAM E54 power manager.
Recomendado
Graphical HMI Panel Controller
The ATSAME54N20A-AUT can drive TFT LCD HMI panels up to WVGA via the integrated EBI and QSPI interfaces, while the Cortex-M4F handles touch event processing and UI rendering. The 100-pin TQFP package exposes the parallel EBI bus plus the 12-bit DAC for backlight PWM, eliminating the need for an external graphics controller on mid-size panels. The USB 2.0 High-Speed PHY provides a fast configuration and log-dump channel during factory test. Plan for at least 256 KB of external PSRAM when targeting WVGA because the internal 256 KB SRAM is consumed by frame buffers and the LVGL stack. A 12 MHz crystal plus a 32.768 kHz RTC crystal are required for stable USB and Ethernet timing.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAME54N20A-AUT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAME54N20A-AU-EFP | ATSAME54N19A-AUT | ATSAME54N19A-AU-EFP | ATSAME53N20A-AU-EFP | ATSAME51N20A-AUT-EFP |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz |
| Flash | 1 MB Dual-Panel ECC | 1 MB Dual-Panel ECC | 512 KB Dual-Panel ECC | 512 KB Dual-Panel ECC | 1 MB Dual-Panel ECC | 1 MB Dual-Panel ECC |
| SRAM | 256 KB ECC | 256 KB ECC | 192 KB ECC | 192 KB ECC | 256 KB ECC | 256 KB ECC |
| Ethernet MAC | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | Not present | Not present |
| CAN-FD Controllers | 2 | 2 | 2 | 2 | 2 | 0 (CAN 2.0B only) |
| USB | FS + HS USB 2.0 PHY | FS + HS USB 2.0 PHY | FS + HS USB 2.0 PHY | FS + HS USB 2.0 PHY | FS + HS USB 2.0 PHY | FS USB only |
| Operating Temperature | -40 C to +85 C (Automotive) | -40 C to +85 C (Industrial) | -40 C to +85 C (Automotive) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Automotive) |
Principais diferenciais
- Dual-panel Flash with ECC enables live firmware update (vs ATSAME54N19A-AUT)
- Automotive -40 C to +85 C grade qualification (vs ATSAME54N20A-AU-EFP)
- Integrated 10/100 Ethernet MAC eliminates external PHY control logic (vs ATSAME53N20A-AU-EFP)
- Two CAN-FD controllers support modern automotive network topologies (vs ATSAME51N20A-AUT-EFP)
Notas de projeto
The ATSAME54N20A-AUT requires three separate supply rails: VDDIO at 3.3 V, VDDCORE at 1.2 V (regulated internally by the on-chip LDO from VDDIO), and VDDPLL for the USB PLL at 3.3 V. Place a 100 nF decoupling cap on every VDDIO/VSS pair within 3 mm of the pin, and add a bulk 10 uF ceramic on the VDDIO rail close to pin 46/89. The internal 1.2 V LDO requires at least 1 uF of output capacitance on VDDCORE (pin 87) to maintain stability under 120 MHz load transients. Inadequate decoupling is the most common cause of USB enumeration failure and Ethernet CRC errors.
At 120 MHz with all peripherals enabled, the ATSAME54N20A-AUT dissipates approximately 120 mW from a 3.3 V supply. Estimated: using 120 MHz x 1.0 mA/MHz typical core current from the datasheet DC characteristics, plus 20 mA for active peripherals, total current draw is roughly 140 mA at 3.3 V. The 100-pin TQFP package has theta_JA around 45 C/W on a 4-layer JEDEC test board, which keeps junction temperature rise under 6 C above ambient - no heatsink needed. However, if the design confines the part to a 2-layer board with limited ground copper, theta_JA can exceed 70 C/W, and the junction temperature must be recalculated using the actual board thermal resistance.
Route the Ethernet RMII signals (PA12-PA17, PC10, PC11) as a matched-length group with 50-ohm characteristic impedance and maximum 50 mm length. Keep them away from switching power lines and the crystal traces. The USB 2.0 D+/D- differential pair (PA24, PA25) must be routed with 90-ohm differential impedance and matched to within 150 mil. Place the 12 MHz crystal (XIN/XOUT) within 5 mm of pins 93/94 with a guard ring tied to ground, and do not route any signal traces under the crystal or its capacitors.
Do not populate the 32.768 kHz crystal with a 6 pF load-capacitor rating if the actual crystal spec calls for 12.5 pF - this is a frequent cause of RTC drift and Ethernet PHY link-up failures. Always check the crystal datasheet's load capacitance and use the formula C_L = (C1 x C2) / (C1 + C2) + C_stray to size the caps. Also remember that the SAM E54 requires the NVM user row to be programmed with the correct FPLL and DPLL settings, or the part will run at the reset-default 4 MHz internal oscillator instead of 120 MHz.
Informações de conformidade
AEC-Q100 grade 1 implied by -AUT suffix per Microchip ordering information. RoHS and REACH compliance per Microchip product page.
