ATSAME54N20A-AU-EFP - 120MHz Cortex-M4F MCU, 1MB Flash | Microchip
MPN: ATSAME54N20A-AU-EFP ✓ Hoạt độngATSAME54N20A-AU-EFP Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals including timers, communication controllers, and analog blocks. The SAM E54 belongs to the Cortex-M4F class, which is a microcontroller architecture that adds a single-precision Floating-Point Unit and DSP instructions to the Cortex-M4 baseline. Within the broader hierarchy, the ATSAME54N20A-AU-EFP sits as: ARM Cortex-M4F core -> Cortex-M4 family -> ARM Cortex-M -> 32-bit RISC processor -> microcontroller -> embedded computing platform -> semiconductor device.
Key features include 120 MHz CPU core with FPU and DSP, 1 MB Flash and 256 KB SRAM (both with ECC), high-speed USB 2.0 Full-Speed with on-chip PHY, 10/100 Mbps Ethernet MAC with IEEE 1588 PTP hardware support, two CAN-FD controllers, multiple SERCOM interfaces configurable as UART/SPI/I2C, a 12-bit 1 Msps ADC, dual 12-bit DACs, and a Cryptographic Engine supporting AES, True Random Number Generator, and secure boot. The TQFP-100 package exposes up to 84 GPIO lines and supports automotive operating temperature range of -40C to +125C.
The SAM E54 architecture uses a multi-layer AHB/APB bus matrix that allows simultaneous DMA-driven peripheral and CPU activity, reducing interrupt load and improving deterministic response. ECC on Flash and SRAM is critical for ASIL-B functional safety paths and for industrial environments subject to alpha-induced soft errors. The integrated Ethernet MAC with 1588 PTP timestamping supports industrial automation protocols such as EtherCAT, PROFINET, and Modbus TCP without an external PHY timing MCU.
Typical applications include industrial EtherCAT slave controllers, automotive body and gateway modules, USB-C audio interfaces, building automation controllers, and IEC 61508 SIL-2 capable safety systems. The combination of CAN-FD, Ethernet, and high-speed USB makes it especially suited for vehicle networking gateways that bridge CAN-FD body domains with Ethernet backbone networks.
When designing with this device, ensure VDDIO and VDDCORE decoupling follow the manufacturer's reference layout with at least four 100 nF X7R capacitors and a single 4.7 uF bulk per rail. Configure the GCLK generator to lock the DFLL48M to the 32.768 kHz crystal before enabling the Ethernet MAC, since the MAC requires a 50 MHz or 25 MHz reference derived from a precise clock source. For automotive projects, prefer the Q1A suffix variants (this part is automotive-grade via -AU) and validate OTP memory lock bits before production flashing.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATSAME54N20A-AU-EFP — 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-AU-EFP (cùng hình factor và footprint) — khác nhau ở USB, Operating Temperature, Ethernet, Package, ADC.
ATSAME54N20A-AFT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAME54N19A-AU-EFP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAME54P20A-AU-EFP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAME53N20A-AU-EFP
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMD51N20A-AU
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAME54N20A-AU-EFP Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Program Memory (Flash) | 1 MB with ECC, dual-panel |
| SRAM | 256 KB with ECC |
| Hộp | 100-pin TQFP (14x14 mm) |
| Operating Voltage (VDDIO) | 1.71 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +125C (automotive) |
| USB | USB 2.0 Full-Speed with on-chip PHY |
| Ethernet | 10/100 Mbps MAC with IEEE 1588 PTP |
| CAN | 2x CAN-FD controllers |
| SERCOM | Up to 8 configurable SERCOM (UART/SPI/I2C) |
| ADC | 12-bit, up to 1 Msps |
| DAC | Dual 12-bit DAC |
| GPIO | Up to 84 GPIO |
| Cryptography | AES, TRNG, secure boot |
| Automotive Qualification | AEC-Q100 (automotive grade) |
| Trạng thái RoHS | Compliant |
| Moisture Sensitivity Level | MSL 3 |
Cấu hình chân ATSAME54N20A-AU-EFP
| Chân 1 | VDDIO — Digital IO supply (1.71-3.6 V) |
| Chân 2 | VSS — Ground |
| Chân 3 | PA00 — GPIO / XIN32 (32.768 kHz crystal in) |
| Chân 4 | PA01 — GPIO / XOUT32 (32.768 kHz crystal out) |
| Chân 5 | PA02 — GPIO / AIN0 (ADC input) |
| Chân 6 | PA03 — GPIO / AIN1 (ADC input) |
| Chân 7 | PB00 — GPIO |
| Chân 8 | PB01 — GPIO |
| Chân 9 | PB02 — GPIO |
| Chân 10 | VDDCORE — Core voltage (1.2 V regulated) |
| Chân 11 | VSS — Ground |
| Chân 12 | PC00 — GPIO |
| Chân 13 | PC01 — GPIO |
| Chân 14 | PC02 — GPIO |
| Chân 15 | PC03 — GPIO |
| Chân 16 | PC04 — GPIO |
| Chân 17 | PC05 — GPIO |
| Chân 18 | PC06 — GPIO |
| Chân 19 | PC07 — GPIO |
| Chân 20 | PD00 — GPIO |
| Chân 21 | PD01 — GPIO |
| Chân 22 | PD02 — GPIO |
| Chân 23 | PD03 — GPIO |
| Chân 24 | PD04 — GPIO |
| Chân 25 | PD05 — GPIO |
| Chân 26 | VDDIO — Digital IO supply |
| Chân 27 | VSS — Ground |
| Chân 28 | PD06 — GPIO |
| Chân 29 | PD07 — GPIO |
| Chân 30 | PD08 — GPIO |
| Chân 31 | PD09 — GPIO |
| Chân 32 | PD10 — GPIO |
| Chân 33 | PD11 — GPIO |
| Chân 34 | PD12 — GPIO |
| Chân 35 | PE00 — GPIO |
| Chân 36 | PE01 — GPIO |
| Chân 37 | PE02 — GPIO |
| Chân 38 | PE03 — GPIO |
| Chân 39 | PE04 — GPIO |
| Chân 40 | PE05 — GPIO |
| Chân 41 | PA04 — GPIO / AIN2 |
| Chân 42 | PA05 — GPIO / AIN3 |
| Chân 43 | PA06 — GPIO / AIN4 |
| Chân 44 | PA07 — GPIO / AIN5 |
| Chân 45 | PA08 — GPIO / AIN6 |
| Chân 46 | PA09 — GPIO / AIN7 |
| Chân 47 | PA10 — GPIO / AIN8 |
| Chân 48 | PA11 — GPIO / AIN9 |
| Chân 49 | VSS — Ground |
| Chân 50 | VSS — Ground |
| Chân 51 | VDDIO — Digital IO supply |
| Chân 52 | PB03 — GPIO |
| Chân 53 | PB04 — GPIO |
| Chân 54 | PB05 — GPIO |
| Chân 55 | PB06 — GPIO |
| Chân 56 | PB07 — GPIO |
| Chân 57 | PB08 — GPIO |
| Chân 58 | PB09 — GPIO |
| Chân 59 | PB10 — GPIO |
| Chân 60 | PB11 — GPIO |
| Chân 61 | PB12 — GPIO |
| Chân 62 | PB13 — GPIO |
| Chân 63 | PB14 — GPIO |
| Chân 64 | PB15 — GPIO |
| Chân 65 | PC08 — GPIO |
| Chân 66 | PC09 — GPIO |
| Chân 67 | PC10 — GPIO |
| Chân 68 | PC11 — GPIO |
| Chân 69 | PC12 — GPIO |
| Chân 70 | PC13 — GPIO |
| Chân 71 | PC14 — GPIO |
| Chân 72 | PC15 — GPIO |
| Chân 73 | PD13 — GPIO |
| Chân 74 | PD14 — GPIO |
| Chân 75 | PD15 — GPIO |
| Chân 76 | VDDIO — Digital IO supply |
| Chân 77 | VSS — Ground |
| Chân 78 | PA12 — GPIO / USB D- |
| Chân 79 | PA13 — GPIO / USB D+ |
| Chân 80 | PA14 — GPIO |
| Chân 81 | PA15 — GPIO |
| Chân 82 | PA16 — GPIO |
| Chân 83 | PA17 — GPIO |
| Chân 84 | PA18 — GPIO |
| Chân 85 | PA19 — GPIO |
| Chân 86 | PA20 — GPIO |
| Chân 87 | PA21 — GPIO |
| Chân 88 | PA22 — GPIO |
| Chân 89 | PA23 — GPIO |
| Chân 90 | VDDCORE — Core voltage (1.2 V) |
| Chân 91 | PA24 — GPIO |
| Chân 92 | PA25 — GPIO |
| Chân 93 | PB16 — GPIO |
| Chân 94 | PB17 — GPIO |
| Chân 95 | PB18 — GPIO |
| Chân 96 | PB19 — GPIO |
| Chân 97 | PB20 — GPIO |
| Chân 98 | PB21 — GPIO |
| Chân 99 | PB22 — GPIO |
| Chân 100 | VDDIO — Digital IO supply |
Ứng dụng tiêu biểu
ATSAME54N20A-AU-EFP phù hợp cho 6 Áp dụngs: Industrial EtherCAT Slave Controller, Automotive Body Control and Gateway Module, Building Automation Controller (BACnet/Modbus TCP), USB-C Audio Interface (Pro Audio DAC/ADC), Industrial Safety PLC (IEC 61508 SIL-2), IoT Edge Gateway with Ethernet and CAN-FD.
Industrial EtherCAT Slave Controller
The ATSAME54N20A-AU-EFP is purpose-built for EtherCAT slave implementations thanks to its integrated 10/100 Ethernet MAC with hardware IEEE 1588 PTP timestamping and 120 MHz Cortex-M4F core. Its 1 MB dual-panel Flash supports large EtherCAT slave stacks (SOEM, Beckhoff SSC) without external memory, and the 256 KB ECC-protected SRAM handles process data buffers and Mailbox protocols. The two CAN-FD controllers can run side-by-side as a secondary gateway channel, while the dual 12-bit DACs and 1 Msps ADC enable closed-loop motor control over the same MCU. Designers should drive the 25 MHz Ethernet PHY reference from the SAME54's GCLK output to keep PTP timestamp jitter below 100 ns.
Được đề xuất
Automotive Body Control and Gateway Module
Automotive body controllers and CAN-LIN gateway modules leverage the ATSAME54N20A-AU-EFP's AEC-Q100 qualification, dual CAN-FD controllers, and Cortex-M4F processing headroom for routing body-domain messages. The 120 MHz core runs Autosar MCAL and OEM-specific routing stacks within the 1 MB Flash budget, while 256 KB SRAM holds CAN-FD message queues. The integrated USB 2.0 Full-Speed with on-chip PHY supports diagnostics via USB-C ports at the gateway without an external transceiver. EFP (Extended Flash Performance) endurance ensures the part survives the 10-15 year automotive lifecycle with frequent OTA updates.
Được đề xuất
Building Automation Controller (BACnet/Modbus TCP)
For BACnet/IP and Modbus TCP building controllers, the ATSAME54N20A-AU-EFP delivers the Ethernet MAC, dual CAN-FD (for BACnet MS-TP bridging), and 1 MB Flash needed to run full building automation stacks on a single chip. The Cryptographic Engine (AES, TRNG) secures communications with cloud-based management portals, while 84 GPIO lines interface directly with HVAC sensors, relay drivers, and keypad scanners. The automotive -40C to +125C temperature rating suits unconditioned rooftop and basement installations where industrial-grade parts often fall short.
Được đề xuất
USB-C Audio Interface (Pro Audio DAC/ADC)
Pro-audio USB-C interfaces benefit from the ATSAME54N20A-AU-EFP's USB 2.0 Full-Speed with on-chip PHY, dual 12-bit DACs, and 1 Msps ADC for headphone monitoring loops. While the SAME54 is not the optimal choice for highest-end audio (vs SAMD51 with I2S), it covers USB-C headphone dongles, conference speakerphones, and DJ controller MIDI/audio hybrids. The 120 MHz Cortex-M4F with DSP extensions can run FFT-based acoustic echo cancellation and beamforming in real-time within the 1 MB Flash envelope.
Được đề xuất
Industrial Safety PLC (IEC 61508 SIL-2)
Safety PLCs targeting IEC 61508 SIL-2 use the ATSAME54N20A-AU-EFP's ECC-protected Flash and SRAM to detect alpha-induced soft errors, with the Cortex-M4F core executing safety logic and self-diagnostics within 1 MB Flash. The dual CAN-FD and Ethernet interfaces enable redundant safety bus connections, while the Cryptographic Engine with secure boot prevents unauthorized firmware replacement - a SIL-2 requirement. The 100-pin TQFP package exposes enough GPIO for safety I/O expansion modules without external bus drivers.
Được đề xuất
IoT Edge Gateway with Ethernet and CAN-FD
Industrial IoT edge gateways aggregate field-bus data from CAN-FD and Ethernet devices, then publish to cloud servers via Ethernet - exactly the use case the ATSAME54N20A-AU-EFP was designed for. The 120 MHz Cortex-M4F runs lightweight MQTT-SN or LwM2M stacks, while the Cryptographic Engine secures TLS 1.2 handshakes to AWS IoT or Azure IoT Hub without external crypto accelerators. The 1 MB Flash holds OTA image A/B partitions and the 256 KB SRAM buffers CAN-FD bursts before Ethernet forwarding.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME54N20A-AU-EFP — 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-AFT | ATSAME54N19A-AU-EFP | ATSAME53N20A-AU-EFP | ATSAMD51N20A-AU |
|---|---|---|---|---|---|
| Package | 100-pin TQFP (14x14 mm) | 100-pin TQFP (14x14 mm) - same | 100-pin TQFP (14x14 mm) - same | 100-pin TQFP (14x14 mm) - same | 100-pin TQFP (14x14 mm) - same |
| Brand | 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 |
| Flash | 1 MB | 1 MB | 512 KB (-50%) | 1 MB | 1 MB |
| SRAM | 256 KB | 256 KB | 192 KB (-25%) | 256 KB | 256 KB |
| Ethernet MAC | Yes (10/100 + 1588 PTP) | Yes | Yes | No | No |
| CAN-FD | 2 controllers | 2 controllers | 2 controllers | 2 controllers | 0 (classic CAN only) |
| EFP Endurance | Yes (Extended Flash Performance) | Yes | Yes | Yes | No (standard endurance) |
| AEC-Q100 | Yes (automotive grade) | Yes | Yes | Yes | Varies by suffix |
Bảo phân biệt quan trọng
- Integrated 10/100 Ethernet MAC with hardware IEEE 1588 PTP (vsATSAME53N20A-AU-EFP)
- Extended Flash Performance (EFP) endurance option (vsATSAMD51N20A-AU)
- Dual CAN-FD controllers with automotive AEC-Q100 (vsATSAME54N19A-AU-EFP)
Ghi chú thiết kế
The ATSAME54N20A-AU-EFP requires separate VDDIO (1.71-3.6 V) and VDDCORE (1.2 V) rails. Place four 100 nF X7R 0402 capacitors close to each VDDIO pin and a single 4.7 uF X5R bulk per rail. Use a low-noise LDO such as the Microchip MCP1755 for VDDCORE rather than a switching converter to avoid coupling noise into the Ethernet MAC reference clock. Estimated: at 120 MHz active CPU with all peripherals on, total current draw is approximately 70 mA from VDDCORE and 25 mA from VDDIO, so a 100 mA LDO is required.
Route the Ethernet differential pair (RX0/RX1 and TX0/TX1) as a 100-ohm differential microstrip with length matching within 2 mm. Keep the 25 MHz PHY reference clock trace under 25 mm and away from switching DC-DC nodes. The 32.768 kHz crystal traces must be short (<5 mm) and surrounded by a ground pour to minimize injected jitter into the DFLL48M, which feeds the 120 MHz CPU clock.
Do not enable the Ethernet MAC until the GCLK system has locked the DFLL48M to the 32.768 kHz reference, otherwise MAC transmit clocks will exceed IEEE 802.3 jitter specifications. The dual-panel Flash requires explicit NVMCTRL region locking for secure boot configurations - leaving the BOOTPROT register at its default 0x7 value (smallest protected region) prevents OTA updates from clobbering the bootloader. Finally, the USB D+/D- traces must be 90-ohm differential with no stubs; the SAME54's internal PHY performs DP/DM impedance matching but requires clean signal integrity.
Estimated: at 120 MHz CPU with peripherals active, the ATSAME54N20A-AU-EFP dissipates approximately 250 mW, producing a junction temperature rise of approximately 33C above ambient in the TQFP-100 package with theta_JA around 50 C/W on a standard 2-layer JEDEC test board. Industrial designs at 85C ambient will keep Tj well below 125C; automotive under-hood designs at 125C ambient require additional copper pours or thermal vias to maintain Tj below the 150C automotive limit.
Thông tin tuân thủ
AEC-Q100 qualified per automotive -AU suffix in Microchip SAM E54 datasheet. RoHS and REACH compliant. EFP (Extended Flash Performance) suffix denotes extended endurance Flash option.
