ATSAME54N20A-AU-EFP - 120MHz Cortex-M4F MCU, 1MB Flash | Microchip
料号： ATSAME54N20A-AU-EFP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.2 | $112.00 |
| 100 | $9.85 | $985.00 |
| 500 | $8.9 | $4,450.00 |
| 1,000 | $8.1 | $8,100.00 |
ATSAME54N20A-AU-EFP 概述
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.
直接替换替代料： ATSAME54N20A-AU-EFP ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAME54N20A-AU-EFP （相同外形与封装尺寸） ——差异在于 USB, Operating Temperature, Ethernet, Package, ADC.
快速对比工具——选择替代料号进行并排对比：
ATSAME54N20A-AFT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$8.1 / 个
查看数据手册 →ATSAME54N19A-AU-EFP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.28 / 个
查看数据手册 →ATSAME54P20A-AU-EFP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$9.46 / 个
查看数据手册 →ATSAME53N20A-AU-EFP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.35 / 个
查看数据手册 →ATSAMD51N20A-AU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$8.49 / 个
查看数据手册 →ATSAME54N20A-AU-EFP 最大额定值与电气特性
| 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 |
| 封装 | 100-pin TQFP (14x14 mm) |
| Operating Voltage (VDDIO) | 1.71 V to 3.6 V |
| 工作温度 | -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) |
| RoHS 状态 | Compliant |
| Moisture Sensitivity Level | MSL 3 |
ATSAME54N20A-AU-EFP 引脚配置
| 引脚 1 | VDDIO — Digital IO supply (1.71-3.6 V) |
| 引脚 2 | VSS — Ground |
| 引脚 3 | PA00 — GPIO / XIN32 (32.768 kHz crystal in) |
| 引脚 4 | PA01 — GPIO / XOUT32 (32.768 kHz crystal out) |
| 引脚 5 | PA02 — GPIO / AIN0 (ADC input) |
| 引脚 6 | PA03 — GPIO / AIN1 (ADC input) |
| 引脚 7 | PB00 — GPIO |
| 引脚 8 | PB01 — GPIO |
| 引脚 9 | PB02 — GPIO |
| 引脚 10 | VDDCORE — Core voltage (1.2 V regulated) |
| 引脚 11 | VSS — Ground |
| 引脚 12 | PC00 — GPIO |
| 引脚 13 | PC01 — GPIO |
| 引脚 14 | PC02 — GPIO |
| 引脚 15 | PC03 — GPIO |
| 引脚 16 | PC04 — GPIO |
| 引脚 17 | PC05 — GPIO |
| 引脚 18 | PC06 — GPIO |
| 引脚 19 | PC07 — GPIO |
| 引脚 20 | PD00 — GPIO |
| 引脚 21 | PD01 — GPIO |
| 引脚 22 | PD02 — GPIO |
| 引脚 23 | PD03 — GPIO |
| 引脚 24 | PD04 — GPIO |
| 引脚 25 | PD05 — GPIO |
| 引脚 26 | VDDIO — Digital IO supply |
| 引脚 27 | VSS — Ground |
| 引脚 28 | PD06 — GPIO |
| 引脚 29 | PD07 — GPIO |
| 引脚 30 | PD08 — GPIO |
| 引脚 31 | PD09 — GPIO |
| 引脚 32 | PD10 — GPIO |
| 引脚 33 | PD11 — GPIO |
| 引脚 34 | PD12 — GPIO |
| 引脚 35 | PE00 — GPIO |
| 引脚 36 | PE01 — GPIO |
| 引脚 37 | PE02 — GPIO |
| 引脚 38 | PE03 — GPIO |
| 引脚 39 | PE04 — GPIO |
| 引脚 40 | PE05 — GPIO |
| 引脚 41 | PA04 — GPIO / AIN2 |
| 引脚 42 | PA05 — GPIO / AIN3 |
| 引脚 43 | PA06 — GPIO / AIN4 |
| 引脚 44 | PA07 — GPIO / AIN5 |
| 引脚 45 | PA08 — GPIO / AIN6 |
| 引脚 46 | PA09 — GPIO / AIN7 |
| 引脚 47 | PA10 — GPIO / AIN8 |
| 引脚 48 | PA11 — GPIO / AIN9 |
| 引脚 49 | VSS — Ground |
| 引脚 50 | VSS — Ground |
| 引脚 51 | VDDIO — Digital IO supply |
| 引脚 52 | PB03 — GPIO |
| 引脚 53 | PB04 — GPIO |
| 引脚 54 | PB05 — GPIO |
| 引脚 55 | PB06 — GPIO |
| 引脚 56 | PB07 — GPIO |
| 引脚 57 | PB08 — GPIO |
| 引脚 58 | PB09 — GPIO |
| 引脚 59 | PB10 — GPIO |
| 引脚 60 | PB11 — GPIO |
| 引脚 61 | PB12 — GPIO |
| 引脚 62 | PB13 — GPIO |
| 引脚 63 | PB14 — GPIO |
| 引脚 64 | PB15 — GPIO |
| 引脚 65 | PC08 — GPIO |
| 引脚 66 | PC09 — GPIO |
| 引脚 67 | PC10 — GPIO |
| 引脚 68 | PC11 — GPIO |
| 引脚 69 | PC12 — GPIO |
| 引脚 70 | PC13 — GPIO |
| 引脚 71 | PC14 — GPIO |
| 引脚 72 | PC15 — GPIO |
| 引脚 73 | PD13 — GPIO |
| 引脚 74 | PD14 — GPIO |
| 引脚 75 | PD15 — GPIO |
| 引脚 76 | VDDIO — Digital IO supply |
| 引脚 77 | VSS — Ground |
| 引脚 78 | PA12 — GPIO / USB D- |
| 引脚 79 | PA13 — GPIO / USB D+ |
| 引脚 80 | PA14 — GPIO |
| 引脚 81 | PA15 — GPIO |
| 引脚 82 | PA16 — GPIO |
| 引脚 83 | PA17 — GPIO |
| 引脚 84 | PA18 — GPIO |
| 引脚 85 | PA19 — GPIO |
| 引脚 86 | PA20 — GPIO |
| 引脚 87 | PA21 — GPIO |
| 引脚 88 | PA22 — GPIO |
| 引脚 89 | PA23 — GPIO |
| 引脚 90 | VDDCORE — Core voltage (1.2 V) |
| 引脚 91 | PA24 — GPIO |
| 引脚 92 | PA25 — GPIO |
| 引脚 93 | PB16 — GPIO |
| 引脚 94 | PB17 — GPIO |
| 引脚 95 | PB18 — GPIO |
| 引脚 96 | PB19 — GPIO |
| 引脚 97 | PB20 — GPIO |
| 引脚 98 | PB21 — GPIO |
| 引脚 99 | PB22 — GPIO |
| 引脚 100 | VDDIO — Digital IO supply |
典型应用
ATSAME54N20A-AU-EFP 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： ATSAME54N20A-AU-EFP ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated 10/100 Ethernet MAC with hardware IEEE 1588 PTP （对比 ATSAME53N20A-AU-EFP)
- Extended Flash Performance (EFP) endurance option （对比 ATSAMD51N20A-AU)
- Dual CAN-FD controllers with automotive AEC-Q100 （对比 ATSAME54N19A-AU-EFP)
设计说明
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.
合规信息
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.
