ATSAME54N20A-AUT - 120MHz ARM Cortex-M4F MCU, 1MB Flash | Microchip
MPN: ATSAME54N20A-AUT ✓ Hoạt độngATSAME54N20A-AUT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ATSAME54N20A-AUT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAME54N20A-AUT (cùng hình factor và footprint) — khác nhau ở USB, ADC, Package, SRAM, Core.
ATSAME54N20A-AU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME54N19A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME54N19A-AU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME53N20A-AU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME53N20A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51N20A-AUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME54N20A-AUT Tỷ lệ tối đa & tính chất điện
| 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 |
| Nhiệt độ hoạt động | -40 C to +85 C (automotive grade) |
| Hộp | 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) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAME54N20A-AUT
| Chân 1 | PA03 — GPIO / ADC AIN1 |
| Chân 2 | PA04 — GPIO / ADC AIN4 |
| Chân 3 | PA05 — GPIO / ADC AIN5 |
| Chân 4 | PA06 — GPIO / ADC AIN6 |
| Chân 5 | PA07 — GPIO / ADC AIN7 |
| Chân 6 | PA08 — GPIO / SERCOM0 PAD0 |
| Chân 7 | PA09 — GPIO / SERCOM0 PAD1 |
| Chân 8 | PA10 — GPIO / SERCOM0 PAD2 |
| Chân 9 | PA11 — GPIO / SERCOM0 PAD3 |
| Chân 10 | VDDIO — I/O supply voltage |
| Chân 11 | VSS — Ground |
| Chân 12 | PA12 — GPIO / SERCOM2 PAD0 |
| Chân 13 | PA13 — GPIO / SERCOM2 PAD1 |
| Chân 14 | PA14 — GPIO / SERCOM2 PAD2 |
| Chân 15 | PA15 — GPIO / SERCOM2 PAD3 |
| Chân 16 | PA16 — GPIO / SERCOM1 PAD0 |
| Chân 17 | PA17 — GPIO / SERCOM1 PAD1 |
| Chân 18 | PA18 — GPIO / SERCOM1 PAD2 |
| Chân 19 | PA19 — GPIO / SERCOM1 PAD3 |
| Chân 20 | PA20 — GPIO / SERCOM3 PAD0 |
| Chân 21 | PA21 — GPIO / SERCOM3 PAD1 |
| Chân 22 | PA22 — GPIO / SERCOM3 PAD2 |
| Chân 23 | PA23 — GPIO / SERCOM3 PAD3 |
| Chân 24 | PA24 — GPIO / USB D- |
| Chân 25 | PA25 — GPIO / USB D+ |
| Chân 26 | PB00 — GPIO |
| Chân 27 | PB01 — GPIO |
| Chân 28 | PB02 — GPIO / ADC AIN14 |
| Chân 29 | PB03 — GPIO / ADC AIN15 |
| Chân 30 | PB04 — GPIO |
| Chân 31 | PB05 — GPIO |
| Chân 32 | PB06 — GPIO |
| Chân 33 | PB07 — GPIO |
| Chân 34 | PB08 — GPIO |
| Chân 35 | PB09 — GPIO |
| Chân 36 | PB10 — GPIO |
| Chân 37 | PB11 — GPIO |
| Chân 38 | PB12 — GPIO |
| Chân 39 | PB13 — GPIO |
| Chân 40 | PB14 — GPIO |
| Chân 41 | PB15 — GPIO |
| Chân 42 | PC00 — GPIO |
| Chân 43 | PC01 — GPIO |
| Chân 44 | PC02 — GPIO |
| Chân 45 | PC03 — GPIO |
| Chân 46 | VDDIO — I/O supply voltage |
| Chân 47 | VSS — Ground |
| Chân 48 | PC04 — GPIO |
| Chân 49 | PC05 — GPIO |
| Chân 50 | PC06 — GPIO |
| Chân 51 | PC07 — GPIO |
| Chân 52 | PC08 — GPIO |
| Chân 53 | PC09 — GPIO |
| Chân 54 | PC10 — GPIO |
| Chân 55 | PC11 — GPIO |
| Chân 56 | PC12 — GPIO |
| Chân 57 | PC13 — GPIO |
| Chân 58 | PC14 — GPIO |
| Chân 59 | PC15 — GPIO |
| Chân 60 | PC16 — GPIO |
| Chân 61 | PC17 — GPIO |
| Chân 62 | PC18 — GPIO |
| Chân 63 | PC19 — GPIO |
| Chân 64 | PC20 — GPIO |
| Chân 65 | PC21 — GPIO |
| Chân 66 | PC22 — GPIO |
| Chân 67 | PC23 — GPIO |
| Chân 68 | PC24 — GPIO |
| Chân 69 | PC25 — GPIO |
| Chân 70 | PC26 — GPIO |
| Chân 71 | PC27 — GPIO |
| Chân 72 | PC28 — GPIO |
| Chân 73 | PC29 — GPIO |
| Chân 74 | PD00 — GPIO |
| Chân 75 | PD01 — GPIO |
| Chân 76 | PD02 — GPIO |
| Chân 77 | PD03 — GPIO |
| Chân 78 | PD04 — GPIO |
| Chân 79 | PD05 — GPIO |
| Chân 80 | PD06 — GPIO |
| Chân 81 | PD07 — GPIO |
| Chân 82 | PD08 — GPIO |
| Chân 83 | PD09 — GPIO |
| Chân 84 | PD10 — GPIO |
| Chân 85 | PD11 — GPIO |
| Chân 86 | PD12 — GPIO |
| Chân 87 | VDDCORE — Core supply (decoupling cap) |
| Chân 88 | VSS — Ground |
| Chân 89 | VDDIO — I/O supply voltage |
| Chân 90 | VSS — Ground |
| Chân 91 | XIN32 — 32.768 kHz crystal input |
| Chân 92 | XOUT32 — 32.768 kHz crystal output |
| Chân 93 | XIN — 12 MHz main crystal input |
| Chân 94 | XOUT — 12 MHz main crystal output |
| Chân 95 | NRST — Reset input, active low |
| Chân 96 | SWDIO — Serial Wire Debug I/O |
| Chân 97 | SWCLK — Serial Wire Debug clock |
| Chân 98 | VBUS — USB VBUS detect |
| Chân 99 | VDDIO — I/O supply voltage |
| Chân 100 | VSS — Ground |
Ứng dụng tiêu biểu
ATSAME54N20A-AUT phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME54N20A-AUT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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) |
Bảo phân biệt quan trọng
- Dual-panel Flash with ECC enables live firmware update (vsATSAME54N19A-AUT)
- Automotive -40 C to +85 C grade qualification (vsATSAME54N20A-AU-EFP)
- Integrated 10/100 Ethernet MAC eliminates external PHY control logic (vsATSAME53N20A-AU-EFP)
- Two CAN-FD controllers support modern automotive network topologies (vsATSAME51N20A-AUT-EFP)
Ghi chú thiết kế
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.
Thông tin tuân thủ
AEC-Q100 grade 1 implied by -AUT suffix per Microchip ordering information. RoHS and REACH compliance per Microchip product page.
