ATSAME51J18A-AU-EFP - 120MHz Cortex-M4F MCU 256KB Flash TQFP-64 | Microchip
料号： ATSAME51J18A-AU-EFP ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.92 | $8.92 |
| 10 | $8.12 | $81.20 |
| 100 | $7.21 | $721.00 |
| 500 | $6.45 | $3,225.00 |
| 1,000 | $5.78 | $5,780.00 |
ATSAME51J18A-AU-EFP 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and a rich set of peripherals into one package. The SAM E51 line belongs to the ARM Cortex-M4 class with single-precision Floating Point Unit (FPU) plus DSP extensions, sitting in the hierarchy MCU -> embedded controller -> semiconductor. These parts target industrial and general-purpose embedded applications requiring deterministic real-time performance, low power, and connectivity.
Key features of the ATSAME51J18A-AU-EFP include the Cortex-M4F core with FPU and DSP instructions, up to 120 MHz operation, 256 KB dual-panel Flash with ECC, 128 KB SRAM, full-speed USB 2.0 with embedded host and device support, CAN-FD controller, up to six SERCOM interfaces for UART/SPI/I2C, a 12-bit 1 MSPS ADC, 16-bit analog comparators, and a 16-bit PWM/timer counter array. The device operates from 1.71 V to 3.84 V, suiting 3.3 V systems.
Architecturally, the SAM E51 uses a 4-layer AHB bus matrix connecting the CPU, Flash, SRAM, and peripherals for low-latency memory access. The Flash includes hardware ECC for class-B safety integrity. The "Extended Flash Performance" bin tightens read characteristics at lower VDD, allowing the same 120 MHz zero-wait-state core speed across a wider operating envelope. Advanced power modes include IDLE, STANDBY, BACKUP, and OFF with battery-domain retention.
Typical applications include industrial automation controllers, building-automation nodes (BACnet/Modbus gateways), IoT edge nodes with USB device/host roles, automotive body and accessory ECUs, drone flight controllers and ESCs, and human-machine interface (HMI) panels. The combination of USB, CAN-FD, and rich SERCOM connectivity also suits bridging hubs and field-bridge converters.
When designing with this MCU, place 0.1 uF plus bulk decoupling within 5 mm of each VDD pin and provide a 32.768 kHz crystal for RTC accuracy. The EFP variant tolerates wider VDD/flash-timing corners than the standard -AU, so firmware written for one typically runs on the other without modification.
This page synthesizes distributor pricing, drop-in alternatives from the SAM E5x family, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： ATSAME51J18A-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： ATSAME51J18A-AU-EFP （相同外形与封装尺寸） ——差异在于 USB, CAN, DAC, ADC, Core.
快速对比工具——选择替代料号进行并排对比：
ATSAME51J19A-AUT-EFP
✅ 直接替换✓ 有现货
$6.45 / 个
查看数据手册 →ATSAME51J19A-AFT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.62 / 个
查看数据手册 →ATSAME51J18A-AFT
✅ 直接替换✓ 有现货
$5.21 / 个
查看数据手册 →ATSAME51J20A-AU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.45 / 个
查看数据手册 →ATSAMD51J18A-AU-EFP
✅ 直接替换✓ 有现货
$3.95 / 个
查看数据手册 →ATSAME51J18A-AU-EFP 最大额定值与电气特性
| Core | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Speed | 120 MHz |
| Program Flash | 256 KB (256K x 8) with ECC |
| SRAM | 128 KB |
| Operating Voltage | 1.71 V to 3.84 V |
| 封装 | 64-pin TQFP (10x10 mm) |
| USB | USB 2.0 Full-Speed Host/Device |
| CAN | CAN-FD controller |
| SERCOM | 6x configurable UART/SPI/I2C |
| ADC | 12-bit, up to 1 MSPS |
| DAC | 12-bit, 1 MSPS |
| Analog Comparators | Yes |
| Timers/Counters | 16-bit TCC PWM timers |
| RTC | Yes, 32.768 kHz crystal domain |
| 工作温度 | -40C to +85C |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
ATSAME51J18A-AU-EFP 引脚配置
| 引脚 1 | VDDIO — I/O supply voltage |
| 引脚 2 | PA00 — GPIO / SERCOM1 PAD0 |
| 引脚 3 | PA01 — GPIO / SERCOM1 PAD1 |
| 引脚 4 | PA02 — GPIO / SERCOM1 PAD2 / AIN0 |
| 引脚 5 | PA03 — GPIO / SERCOM1 PAD3 / AIN1 / VREFA |
| 引脚 6 | PA04 — GPIO / SERCOM0 PAD0 / AIN2 |
| 引脚 7 | PA05 — GPIO / SERCOM0 PAD1 / AIN3 |
| 引脚 8 | PA06 — GPIO / SERCOM0 PAD2 / AIN4 |
| 引脚 9 | PA07 — GPIO / SERCOM0 PAD3 / AIN5 |
| 引脚 10 | VDDIO — I/O supply voltage |
| 引脚 11 | GND — Ground |
| 引脚 12 | PA08 — GPIO / SERCOM2 PAD0 / NTC |
| 引脚 13 | PA09 — GPIO / SERCOM2 PAD1 |
| 引脚 14 | PA10 — GPIO / SERCOM2 PAD2 |
| 引脚 15 | PA11 — GPIO / SERCOM2 PAD3 |
| 引脚 16 | PA12 — GPIO / SERCOM4 PAD0 / USB_DP |
| 引脚 17 | PA13 — GPIO / SERCOM4 PAD1 / USB_DM |
| 引脚 18 | PA14 — GPIO / SERCOM4 PAD2 |
| 引脚 19 | PA15 — GPIO / SERCOM4 PAD3 |
| 引脚 20 | GND — Ground |
| 引脚 21 | PA16 — GPIO / SERCOM1 PAD0 / I2S_SDI |
| 引脚 22 | PA17 — GPIO / SERCOM1 PAD1 / I2S_SDO |
| 引脚 23 | PA18 — GPIO / SERCOM3 PAD0 |
| 引脚 24 | PA19 — GPIO / SERCOM3 PAD1 |
| 引脚 25 | PA20 — GPIO / SERCOM5 PAD0 |
| 引脚 26 | PA21 — GPIO / SERCOM5 PAD1 |
| 引脚 27 | PA22 — GPIO / SERCOM3 PAD2 |
| 引脚 28 | PA23 — GPIO / SERCOM3 PAD3 |
| 引脚 29 | PA24 — GPIO / USB_ID |
| 引脚 30 | PA25 — GPIO / USB_VBUS |
| 引脚 31 | GND — Ground |
| 引脚 32 | VDDCORE — Internal core supply (decoupling only) |
| 引脚 33 | PA27 — GPIO / CAN0 TX |
| 引脚 34 | PA28 — GPIO / CAN0 RX |
| 引脚 35 | RESETn — Active-low reset input |
| 引脚 36 | VDDIO — I/O supply voltage |
| 引脚 37 | PB02 — GPIO / SERCOM5 PAD0 |
| 引脚 38 | PB03 — GPIO / SERCOM5 PAD1 |
| 引脚 39 | PB04 — GPIO / SERCOM3 PAD0 |
| 引脚 40 | PB05 — GPIO / SERCOM3 PAD1 |
| 引脚 41 | PB06 — GPIO / SERCOM0 PAD0 |
| 引脚 42 | PB07 — GPIO / SERCOM0 PAD1 |
| 引脚 43 | PB08 — GPIO / SERCOM4 PAD0 / LED |
| 引脚 44 | PB09 — GPIO / SERCOM4 PAD1 |
| 引脚 45 | PB10 — GPIO / SERCOM4 PAD2 |
| 引脚 46 | PB11 — GPIO / SERCOM4 PAD3 |
| 引脚 47 | PB12 — GPIO / TCC0 WO0 / XIN32 |
| 引脚 48 | PB13 — GPIO / TCC0 WO1 / XOUT32 |
| 引脚 49 | PB14 — GPIO / SERCOM5 PAD2 |
| 引脚 50 | PB15 — GPIO / SERCOM5 PAD3 |
| 引脚 51 | PB16 — GPIO / SERCOM5 PAD0 |
| 引脚 52 | PB17 — GPIO / SERCOM5 PAD1 |
| 引脚 53 | PB18 — GPIO / SERCOM3 PAD2 |
| 引脚 54 | PB19 — GPIO / SERCOM3 PAD3 |
| 引脚 55 | PB20 — GPIO / SERCOM3 PAD0 |
| 引脚 56 | PB21 — GPIO / SERCOM3 PAD1 |
| 引脚 57 | PB22 — GPIO / SERCOM1 PAD2 |
| 引脚 58 | PB23 — GPIO / SERCOM1 PAD3 |
| 引脚 59 | PB24 — GPIO / SERCOM0 PAD2 |
| 引脚 60 | PB25 — GPIO / SERCOM0 PAD3 |
| 引脚 61 | PB26 — GPIO / SERCOM2 PAD0 |
| 引脚 62 | PB27 — GPIO / SERCOM2 PAD1 |
| 引脚 63 | PB28 — GPIO / SERCOM2 PAD2 |
| 引脚 64 | PB29 — GPIO / SERCOM2 PAD3 |
典型应用
ATSAME51J18A-AU-EFP 适用于 6 应用s: Industrial Automation Controllers, IoT Edge Nodes with USB, Building Automation Gateways, Drone Flight Controllers and ESCs, Human-Machine Interface (HMI) Panels, Automotive Body and Accessory ECUs.
Industrial Automation Controllers
The ATSAME51J18A-AU-EFP fits industrial automation controllers where 120 MHz Cortex-M4F DSP performance, CAN-FD, and six SERCOM channels must coexist on a single MCU. Its 256 KB Flash with ECC provides class-B safe program memory, while the 128 KB SRAM holds Modbus/Profibus stack frames and PID control loops. The EFP bin's extended flash-read envelope ensures deterministic zero-wait-state execution across the 3.3 V industrial supply band, eliminating a common field reliability issue at VDD droop. The part is also widely used in PLC sub-modules and machine-vision pre-processors.
推荐
IoT Edge Nodes with USB
The ATSAME51J18A-AU-EFP serves IoT edge nodes needing USB 2.0 full-speed device or host roles alongside low-power sleep. Its 1.71 V to 3.84 V supply range supports battery-direct topologies; BACKUP mode with RTC retention draws micro-amps for long sleep intervals between sensor reads. The Cortex-M4F FPU accelerates on-device FFT and ML inference for edge analytics. Compared with a discrete MCU + USB bridge, the integrated USB OTG removes a chip and a BOM line. Engineers use it for BLE/LoRa gateways with USB-C diagnostics, sensor hubs, and asset trackers.
推荐
Building Automation Gateways
In building-automation gateways bridging BACnet, Modbus, and KNX, the ATSAME51J18A-AU-EFP provides the headroom to run multiple protocol stacks concurrently on its 120 MHz core. The 256 KB Flash accommodates BACnet/IP plus a TLS 1.2 client used for cloud uploads; the 128 KB SRAM holds packet buffers for simultaneous TCP and serial traffic. Six SERCOM channels map cleanly to RS-485 transceivers for Modbus RTU, while CAN-FD can carry KNX-style or proprietary fieldbus traffic. The TQFP-64 footprint gives designers easy hand-rework during prototyping.
推荐
Drone Flight Controllers and ESCs
The ATSAME51J18A-AU-EFP suits small UAV flight controllers and electronic speed controllers (ESCs) that need deterministic PWM and fast control loops. Its Cortex-M4F single-precision FPU runs PID plus quaternion attitude math at the 120 MHz zero-wait-state rate without offloading to a coprocessor. The TCC 16-bit PWM timers deliver center-aligned, complementary outputs with hardware dead-time insertion, which is essential for brushless DC motor commutation. The 12-bit 1 MSPS ADC samples current and voltage sense channels fast enough for FOC. EFP bin ensures the 120 MHz rate holds across the LiPo-discharge VDD curve.
推荐
Human-Machine Interface (HMI) Panels
In compact HMI panels driving TFT LCDs and touch overlays, the ATSAME51J18A-AU-EFP delivers the 120 MHz Cortex-M4F throughput required by LVGL or emWin graphical stacks. Its 128 KB SRAM holds frame buffers for QVGA/WQVGA displays, while 256 KB Flash stores fonts, icons, and UI flows. The SERCOM channels map to SPI display, I2C touch, and UART to a host PLC. CAN-FD provides reliable panel-to-panel and panel-to-controller communication in factory environments. For larger displays, drop-in upgrade to ATSAME51J20A-AU (1 MB Flash / 256 KB SRAM) on the same footprint.
推荐
Automotive Body and Accessory ECUs
The ATSAME51J18A-AU-EFP is used in automotive body controllers, accessory ECUs, and CAN-based lighting modules. While the J18A-AU grade is not AEC-Q100 qualified, designers use it in non-safety body domains such as HVAC, mirror control, and ambient lighting nodes. CAN-FD enables modern body networks, and the EFP bin keeps operation reliable across the 12 V battery-cold-crank droop. The 64-TQFP footprint eases convection rework, and the Cortex-M4F accelerates CANopen and J1939 stacks. For safety-critical ECUs, select an AEC-Q100 qualified Microchip SAM variant.
推荐
推荐产品汇总
工程参考数据： ATSAME51J18A-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 | ATSAME51J19A-AUT-EFP | ATSAME51J19A-AFT | ATSAME51J18A-AFT | ATSAME51J20A-AU | ATSAMD51J18A-AU-EFP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10) | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same | TQFP-64 (10x10) - same |
| Core | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz | Cortex-M4F 120 MHz |
| Flash | 256 KB | 512 KB | 512 KB | 256 KB | 1 MB | 256 KB |
| SRAM | 128 KB | 192 KB | 192 KB | 128 KB | 256 KB | 128 KB |
| USB | FS Host/Device | FS Host/Device | FS Host/Device | FS Host/Device | FS Host/Device | FS Host/Device |
| EFP Bin | Yes | Yes | No (standard FT) | No (standard FT) | No (standard AU) | Yes |
关键差异点
- Extended Flash Performance bin keeps 120 MHz at lower VDD （对比 ATSAME51J18A-AU)
- Drop-in upgrade path to 512 KB Flash on same footprint （对比 ATSAME51J19A-AUT-EFP)
- 1 MB Flash ceiling on the same package （对比 ATSAME51J20A-AU)
设计说明
Place a 0.1 uF ceramic plus 4.7 uF bulk decoupling capacitor within 5 mm of each VDDIO pin and a 1 uF plus 0.1 uF pair on VDDCORE. The ATSAME51J18A-AU-EFP draws peaks up to 35 mA in active 120 MHz mode; undersized decoupling can cause VDD droop and Flash read errors even with the EFP bin's wider envelope.
Route the 32.768 kHz crystal traces symmetrically and shield with a ground guard ring to avoid capacitive loading. Keep crystal traces under 5 mm and place the load capacitors within 2 mm of the XIN32/XOUT32 pins. The EFP bin extends the VDD/flash-timing corner but does not relax RTC accuracy requirements.
Do not assume SAM D5x and SAM E5x are pin-compatible across all functions; SERCOM count and pin-mux mapping differ, so verify each pin assignment against the SAM E5x pin-multiplexing table before swapping ATSAMD51 for ATSAME51 firmware. The 64-TQFP footprint is the same, but firmware migration requires peripheral re-mapping.
USB DP/DM traces must be 90 ohm differential with no stubs; place the 22 ohm series source-impedance resistors within 4 mm of the MCU pins. For CAN-FD, route TX/RX as a 120 ohm differential pair and place the bus termination at the cable ends, not at the MCU, to avoid reflection at high bus loads.
合规信息
RoHS and REACH compliant per Microchip product page. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified - select an automotive-grade SAM variant for vehicle ECUs.
