ATSAME51J18A-AF - 120MHz Cortex-M4F MCU, 256KB Flash | Microchip
MPN: ATSAME51J18A-AF ✓ Hoạt độngATSAME51J18A-AF Tóm tắt
A 32-bit microcontroller (MCU) is a single-chip processor that integrates CPU core, program memory (Flash), data memory (SRAM), and a wide peripheral set into one IC. Within the embedded hierarchy, an MCU sits below an MPU (microprocessor) in integration and is optimized for deterministic, real-time control tasks. The SAM E51 family specifically targets industrial and general-purpose applications by combining a Cortex-M4F core (DSP extensions + single-precision FPU) with hardware cryptography, a high-performance bus matrix, and a tightly-coupled SRAM/Flash subsystem that sustains zero-wait-state execution at 120 MHz.
Key features include the Cortex-M4F core with FPU and DSP instructions, an 8-channel Event System for inter-peripheral signalling without CPU intervention, up to 51 programmable I/O pins, a 12-bit 1 Msps ADC with up to 16 channels, multiple SERCOM interfaces configurable as UART/SPI/I2C, a USB 2.0 Full-Speed device/host with on-chip transceiver, and an AEC-Q100-qualified automotive option in the same package. The TC (Timer/Counter) block supports capture, compare, PWM, and quadrature decoding, and a Real-Time Clock (RTC) is included for time-of-day retention.
The ATSAME51J18A-AF uses a dual-panel Flash with ECC for robust code storage and operates over a 1.71V to 3.6V supply with internal LDO and DC-DC regulators selectable for core power. The 64-pin TQFP package is footprint-compatible with the wider SAM D5x/E5x family, enabling PCB reuse across flash/RAM options. The integrated Event System and SERCOM peripherals allow highly flexible pin mapping, reducing routing pressure on dense boards.
Typical applications include industrial control (PLCs, motor control, sensor hubs), USB peripherals and human-interface devices, CAN-FD nodes in automotive and industrial networks, building automation and HVAC controllers, and connected IoT edge nodes. Designers choose the E51 for its balance of high core frequency, large SRAM, and integrated USB and CAN-FD that remove external PHY costs.
When designing with this device, ensure the 64-pin TQFP land pattern is used and that the decoupling network specified in the datasheet is placed close to the AVDD/VDD pins. Choose between the internal LDO and DC-DC regulator modes based on efficiency vs EMI trade-offs, and reserve one SERCOM for firmware updates via UART or SPI.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATSAME51J18A-AF — 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 ATSAME51J18A-AF (cùng hình factor và footprint) — khác nhau ở ADC, Operating Temperature, USB, CAN, DAC.
ATSAME51J20A-AF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J19A-AF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J18A-AU-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD51J20A-AUT-EFP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J18A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME51J18A-AF Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4F with FPU and DSP |
| Maximum CPU Clock | 120 MHz |
| Program Memory (Flash) | 256 KB dual-panel Flash with ECC |
| SRAM | 128 KB |
| Supply Voltage (VDD) | 1.71 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +125 C (extended industrial) |
| Hộp | 64-pin TQFP (10x10 mm) |
| GPIO Count | Up to 51 programmable I/O pins |
| ADC | 12-bit, up to 1 Msps, up to 16 channels |
| USB | USB 2.0 Full-Speed device/host with on-chip PHY |
| CAN | CAN 2.0B and CAN-FD controller |
| SERCOM | Configurable UART / SPI / I2C interfaces |
| Timers/Counters | TC blocks for capture, compare, PWM, quadrature decode |
| Event System | 8-channel inter-peripheral event signalling |
| Kiểu lắp đặt | Surface Mount (TQFP) |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAME51J18A-AF
| Chân 1 | PA00 — GPIO / SERCOM1 PAD0 / TCC2 WO[0] |
| Chân 2 | PA01 — GPIO / SERCOM1 PAD1 / TCC2 WO[1] |
| Chân 3 | PA02 — GPIO / SERCOM1 PAD2 / ADC AIN[0] |
| Chân 4 | PA03 — GPIO / SERCOM1 PAD3 / ADC AIN[1] / VREFA |
| Chân 5 | GND — Ground |
| Chân 6 | VDD — Digital supply voltage |
| Chân 7 | PA04 — GPIO / SERCOM0 PAD0 / TCC0 WO[0] |
| Chân 8 | PA05 — GPIO / SERCOM0 PAD1 / TCC0 WO[1] |
| Chân 9 | PA06 — GPIO / SERCOM0 PAD2 / ADC AIN[2] |
| Chân 10 | PA07 — GPIO / SERCOM0 PAD3 / ADC AIN[3] |
| Chân 11 | PA08 — GPIO / SERCOM2 PAD0 / USB VBUS |
| Chân 12 | PA09 — GPIO / SERCOM2 PAD1 |
| Chân 13 | PA10 — GPIO / SERCOM2 PAD2 / TCC1 WO[0] |
| Chân 14 | PA11 — GPIO / SERCOM2 PAD3 / TCC1 WO[1] |
| Chân 15 | VSS — Ground (core) |
| Chân 16 | VDD — Digital supply voltage |
| Chân 17 | PA12 — GPIO / SERCOM4 PAD0 |
| Chân 18 | PA13 — GPIO / SERCOM4 PAD1 |
| Chân 19 | PA14 — GPIO / SERCOM4 PAD2 |
| Chân 20 | PA15 — GPIO / SERCOM4 PAD3 |
| Chân 21 | PA16 — GPIO / SERCOM3 PAD0 / I2S SCK |
| Chân 22 | PA17 — GPIO / SERCOM3 PAD1 / I2S FS |
| Chân 23 | PA18 — GPIO / SERCOM3 PAD2 / I2S MCK |
| Chân 24 | PA19 — GPIO / SERCOM3 PAD3 / I2S SDO |
| Chân 25 | PA20 — GPIO / SERCOM5 PAD0 |
| Chân 26 | PA21 — GPIO / SERCOM5 PAD1 |
| Chân 27 | PA22 — GPIO / SERCOM5 PAD2 |
| Chân 28 | PA23 — GPIO / SERCOM5 PAD3 / USB D- |
| Chân 29 | PB00 — GPIO / SERCOM5 PAD0 |
| Chân 30 | PB01 — GPIO / SERCOM5 PAD1 |
| Chân 31 | PB02 — GPIO / SERCOM5 PAD2 / ADC AIN[10] |
| Chân 32 | PB03 — GPIO / SERCOM5 PAD3 / ADC AIN[11] |
| Chân 33 | PB04 — GPIO / SERCOM3 PAD0 |
| Chân 34 | PB05 — GPIO / SERCOM3 PAD1 |
| Chân 35 | PB06 — GPIO / SERCOM3 PAD2 |
| Chân 36 | PB07 — GPIO / SERCOM3 PAD3 |
| Chân 37 | PB08 — GPIO / SERCOM4 PAD0 / ADC AIN[4] |
| Chân 38 | PB09 — GPIO / SERCOM4 PAD1 / ADC AIN[5] |
| Chân 39 | PB10 — GPIO / SERCOM4 PAD2 / ADC AIN[6] |
| Chân 40 | PB11 — GPIO / SERCOM4 PAD3 / ADC AIN[7] |
| Chân 41 | PB12 — GPIO / SERCOM0 PAD0 / CAN TX |
| Chân 42 | PB13 — GPIO / SERCOM0 PAD1 / CAN RX |
| Chân 43 | PB14 — GPIO / SERCOM2 PAD0 |
| Chân 44 | PB15 — GPIO / SERCOM2 PAD1 |
| Chân 45 | VDDIO — I/O supply voltage |
| Chân 46 | GND — Ground |
| Chân 47 | XIN — Crystal oscillator input |
| Chân 48 | XOUT — Crystal oscillator output |
| Chân 49 | RESET — Reset input (active low) |
| Chân 50 | SWDIO — Serial Wire Debug I/O |
| Chân 51 | SWCLK — Serial Wire Debug clock |
| Chân 52 | VBAT — RTC backup supply |
| Chân 53 | PA24 — GPIO / USB D+ |
| Chân 54 | PA25 — GPIO |
| Chân 55 | PA26 — GPIO |
| Chân 56 | PA27 — GPIO |
| Chân 57 | PA28 — GPIO |
| Chân 58 | PA29 — GPIO |
| Chân 59 | PA30 — GPIO / SERCOM1 PAD2 |
| Chân 60 | PA31 — GPIO / SERCOM1 PAD3 |
| Chân 61 | PB16 — GPIO / SERCOM5 PAD0 |
| Chân 62 | PB17 — GPIO / SERCOM5 PAD1 |
| Chân 63 | PB18 — GPIO / SERCOM5 PAD2 |
| Chân 64 | PB19 — GPIO / SERCOM5 PAD3 |
Ứng dụng tiêu biểu
ATSAME51J18A-AF phù hợp cho 6 Áp dụngs: Industrial PLC and Motor Control, USB Peripherals and HID Devices, CAN-FD Automotive Body and Chassis Nodes, Building Automation and HVAC Controllers, Industrial IoT Edge Gateways, Smart Sensor Hubs.
Industrial PLC and Motor Control
The ATSAME51J18A-AF suits industrial PLC and motor-control nodes thanks to its 120 MHz Cortex-M4F core with FPU, which accelerates field-oriented control (FOC) loops within sub-microsecond cycle times. The TC blocks deliver up to six 16-bit PWM channels with complementary outputs and dead-time insertion, while the 12-bit 1 Msps ADC samples phase currents synchronously to the PWM edge - critical for sensorless FOC at high RPM. The integrated CAN-FD controller connects the node directly to industrial networks without an external transceiver, and the 1.71V-3.6V supply tolerates 24V industrial bus rails after regulation. Engineers should reserve a SERCOM for SPI-driven gate drivers and use the Event System to offload ADC-to-PWM timing from the CPU.
Được đề xuất
USB Peripherals and HID Devices
The ATSAME51J18A-AF is well-matched to USB peripherals because it integrates a USB 2.0 Full-Speed controller with an on-chip PHY, removing the need for an external transceiver and reducing BOM cost. The 120 MHz Cortex-M4F with 128 KB SRAM runs the USB stack plus application code with headroom for HID, CDC, or vendor-class interfaces. Designers can map the USB D+/D- lines to any GPIO via the peripheral multiplexer, simplifying board routing in dense enclosures. The 64-pin TQFP package exposes up to 51 I/O for buttons, LEDs, and sensor I/O. Engineers should add ESD protection on D+/D- and configure the 48 MHz USB clock from the PLL with the correct divider.
Được đề xuất
CAN-FD Automotive Body and Chassis Nodes
The ATSAME51J18A-AF serves CAN-FD body and chassis ECUs with its on-chip CAN-FD controller supporting up to 8 Mbps data phase and ISO 11898-1 compliant frame format. The 256 KB Flash holds AUTOSAR-classical or OEM-specific stacks, and 128 KB SRAM is sufficient for CAN-FD RX/TX buffering plus diagnostics over UDS. The AEC-Q100 grade option in the same 64-pin TQFP footprint enables drop-in deployment into harsh automotive environments, and the -40C to +125C operating range covers under-hood and cabin locations. Use one SERCOM for LIN slave communication and the Event System to trigger ADC sampling on CAN message arrival for deterministic response.
Được đề xuất
Building Automation and HVAC Controllers
The ATSAME51J18A-AF fits HVAC controllers because its Cortex-M4F with FPU runs model-predictive or PID climate-control loops while its multiple SERCOM channels drive UART, SPI, and I2C sensor buses for temperature, humidity, and CO2 transducers. The 12-bit ADC with up to 16 channels reads analog sensors directly, and the 64-pin TQFP exposes sufficient I/O for relay drivers, triac interfaces, and 7-segment or character-LCD displays. The 1.71V-3.6V supply operates directly from a 3.3V regulated rail, simplifying integration with HVAC power supplies. Engineers should use the RTC for scheduling and pair the E51 with a sub-GHz transceiver for wireless thermostat variants.
Được đề xuất
Industrial IoT Edge Gateways
The ATSAME51J18A-AF is appropriate for edge gateway nodes aggregating sensor data over CAN, UART, or I2C and forwarding it via USB to a host processor or via on-board wireless. The 256 KB Flash runs TLS 1.2/1.3 stacks for secure uplink, and the 128 KB SRAM buffers time-series data before transmission. The Cortex-M4F DSP extensions accelerate FFT and vibration analysis at the edge, reducing uplink bandwidth. The 120 MHz core and dual-panel Flash support OTA firmware updates with rollback. Engineers should isolate USB D+/D- with a TVS diode and add a watchdog timer fed by the internal RC oscillator for fail-safe operation.
Được đề xuất
Smart Sensor Hubs
The ATSAME51J18A-AF is a strong fit for multi-sensor hub designs where multiple I2C/SPI sensors stream data into the MCU over its SERCOM channels and the Cortex-M4F performs on-device sensor fusion. The 12-bit ADC digitizes analog sensors at 1 Msps, the 128 KB SRAM buffers pre-processed data, and the USB or CAN interface uploads results to a central controller. The 64-pin TQFP package has enough I/O to support 4-6 sensor slaves plus an indicator LED chain. Engineers should map sensors to dedicated SERCOM instances to avoid bus contention and use DMA to offload streaming data from the CPU.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME51J18A-AF — 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 | ATSAME51J20A-AF | ATSAME51J19A-AF | ATSAMD51J18A-AU | ATSAMD51J20A-AU | ATSAME51J18A-AUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (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 | 1 MB (+300%) | 512 KB (+100%) | 256 KB | 1 MB | 256 KB |
| SRAM | 128 KB | 256 KB (+100%) | 192 KB (+50%) | 128 KB | 256 KB | 128 KB |
| USB | USB FS with on-chip PHY | USB FS with on-chip PHY | USB FS with on-chip PHY | USB FS with on-chip PHY | USB FS with on-chip PHY | USB FS with on-chip PHY |
| CAN-FD | Yes | Yes | Yes | Yes (CAN-FD) | Yes (CAN-FD) | Yes |
| Peripheral Mix | SAME51 (industrial: CAN-FD, USB, I2S) | SAME51 (industrial) | SAME51 (industrial) | SAMD51 (HMI: EBI, TFT, I2S) | SAMD51 (HMI: EBI, TFT, I2S) | SAME51 (industrial) |
Bảo phân biệt quan trọng
- Drop-in Flash density upgrade path (vsATSAME51J18A-AF vs ATSAME51J19A-AF)
- Industrial peripheral mix vs HMI peripheral mix (vsATSAME51J18A-AF vs ATSAMD51J18A-AU)
- Largest 1 MB Flash option for code-heavy designs (vsATSAME51J18A-AF vs ATSAME51J20A-AF)
Ghi chú thiết kế
The ATSAME51J18A-AF includes a selectable internal LDO or DC-DC regulator for the core domain. Select LDO mode for lowest EMI in noise-sensitive analog designs, or DC-DC mode for better efficiency at high CPU loads (120 MHz). Place the recommended inductor and capacitors per the SAM E51 datasheet reference design; deviations can cause instability or increased ripple on VDDIO.
Route USB D+ and D- as a 90-ohm differential pair with matched length, and place the on-chip PHY decoupling capacitor within 2 mm of the VDDPLL pin. The 64-pin TQFP land pattern is 0.5 mm pitch, so use ENIG finish and 4-mil trace/space for fabrication. Expose sufficient copper pour under the package to keep junction temperature below 85 C at 120 MHz full load.
Estimated: at 120 MHz full CPU load the E51 draws approximately 14 mA from VDD; with VDD = 3.3V and a peripheral mix enabled, total current can reach 25 mA. Verify that the regulator selected can supply peak load without droop. Do not exceed 3.6V on any VDD pin or damage may result. Always use the factory bootloader pattern for SWD access during PCB bring-up before locking the security bit.
Thông tin tuân thủ
RoHS and lead-free compliant per Microchip product page. Standard variant not AEC-Q100 qualified; AEC-Q100 grade option available in SAME51 family. Halogen-free status not explicitly stated in available data.
