ATSAME70N21A-CN - ARM Cortex-M7 300MHz MCU 2MB Flash 100-TFBGA | Microchip
MPN: ATSAME70N21A-CN ✓ Hoạt độngATSAME70N21A-CN Tóm tắt
An ARM Cortex-M7 MCU is a 32-bit microcontroller built on the ARMv7-M architecture with a Harvard bus, hardware single-precision and double-precision FPU, and tightly coupled memory for deterministic interrupt response. Compared with Cortex-M4 parts, Cortex-M7 adds a 6-stage superscalar pipeline, an instruction cache, and dedicated SIMD and double-precision FPU instructions, sitting between microcontroller and application-processor complexity while remaining deterministic and interrupt-driven. ATSAME70N21A-CN sits within the higher tier of Cortex-M7 microcontrollers on the market, balancing large on-chip memory with rich connectivity.
The device features a 2 MB dual-bank Flash with read-while-write (RWW) capability, 384 KB of SRAM configurable as 4 blocks for simultaneous CPU/DMA/USB access, and a 4 KB user RAM that survives backup mode. High-speed peripherals include an integrated HS USB 2.0 PHY, 10/100 Mbps Ethernet MAC with IEEE 1588 support, two CAN-FD controllers, a 12-bit 2 Msps ADC, two 12-bit DACs, and multiple serial interfaces including USART, SPI, TWI, and SSC for audio. The graphics-friendly peripherals (LCD controller, camera interface via ISI, and I2S) position it well for HMI applications.
The architecture pairs the 300 MHz Cortex-M7 with a multi-layer bus matrix, 16 KB instruction cache, and tightly coupled memory (Icache + Dcache) for deterministic real-time response at full clock. The integrated High-Speed USB 2.0 PHY eliminates an external ULPI bridge, while the EMAC supports RMII and MII PHY interfaces for 10/100 Ethernet with hardware timestamping for industrial protocols such as EtherCAT, PROFINET, and TSN. DSP instructions accelerate audio and motor-control loops without CPU saturation.
Typical applications include industrial automation and EtherCAT slave controllers, building automation gateways, audio processing devices such as professional mixers and USB speakers, medical instrumentation requiring deterministic data acquisition, and HMI controllers with TFT touchscreens and camera input. The combination of FPU, large memory, Ethernet, and USB makes it a strong fit for connected IIoT edge nodes.
When designing with ATSAME70N21A-CN, allocate decoupling capacitors close to the four VDDIO/VDDIN pairs, keep the high-speed USB D+/D- traces length-matched and 90 ohm differential impedance controlled, and refer to the SAM E70 datasheet's MII/RMII interface section for PHY-specific termination. For 300 MHz operation ensure the crystal or external reference meets the jitter mask in the electrical characteristics; a 12 MHz crystal with the on-chip PLL typically covers most designs.
This page consolidates distributor pricing, verified drop-in alternatives from the SAM E70 family and competing Cortex-M7 lines, and practical hardware design notes not found on individual distributor listings. It is intended to accelerate BOM decisions, footprint reuse, and second-source qualification for industrial, audio, and IIoT designs based on the SAM E70 platform.
Bộ thay thế dễ dàng lắp đặt cho ATSAME70N21A-CN — 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 ATSAME70N21A-CN (cùng hình factor và footprint) — khác nhau ở ADC, Package, SRAM, Operating Temperature, USB.
ATSAME70N20A-CN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70N19A-CN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70N21A-CNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMS70N21A-CN
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAME70N21B-CN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70N21A-CN Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M7 with FPU |
| Tần số xung maksimum | 300 MHz |
| Flash Memory | 2 MB (2M x 8) |
| SRAM | 384 KB multi-port |
| Instruction Cache | 16 KB ICache + DCache |
| Operating Voltage | 1.62 V to 3.6 V |
| Supply Voltage (typical) | 1.8 V / 2.5 V / 3.3 V |
| Hộp | 100-pin TFBGA (9x9 mm) |
| Kiểu lắp đặt | Surface Mount |
| ADC | 12-bit, up to 2 Msps |
| DAC | 2 x 12-bit |
| Ethernet | 10/100 Mbps MAC with IEEE 1588 (MII/RMII) |
| USB | USB 2.0 High-Speed PHY (integrated) |
| CAN | 2 x CAN-FD controllers |
| Nhiệt độ hoạt động | -40C to +105C (industrial) |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATSAME70N21A-CN
| Chân A1 | VDDIO — I/O supply voltage |
| Chân A2 | PA0 — GPIO / peripheral function |
| Chân A3 | PA1 — GPIO / peripheral function |
| Chân A4 | PA2 — GPIO / peripheral function |
| Chân A5 | PA3 — GPIO / peripheral function |
| Chân A6 | VDDIN — Voltage regulator input supply |
| Chân A7 | GND — Ground |
| Chân A8 | VDDOUT — Voltage regulator output (core supply) |
| Chân A9 | PA4 — GPIO / peripheral function |
| Chân A10 | PA5 — GPIO / peripheral function |
| Chân B1 | PA6 — GPIO / peripheral function |
| Chân B2 | PA7 — GPIO / peripheral function |
| Chân B3 | PA8 — GPIO / peripheral function |
| Chân B4 | PA9 — GPIO / peripheral function |
| Chân B5 | VDDIO — I/O supply voltage |
| Chân B6 | GND — Ground |
| Chân B7 | PA10 — GPIO / peripheral function |
| Chân B8 | PA11 — GPIO / peripheral function |
| Chân B9 | PA12 — GPIO / peripheral function |
| Chân B10 | PA13 — GPIO / peripheral function |
| Chân C1 | PA14 — GPIO / peripheral function |
| Chân C2 | PA15 — GPIO / peripheral function |
| Chân C3 | PA16 — GPIO / peripheral function |
| Chân C4 | PA17 — GPIO / peripheral function |
| Chân C5 | PA18 — GPIO / XOUT32 (external 32 kHz crystal) |
| Chân C6 | PA19 — GPIO / XIN32 (external 32 kHz crystal) |
| Chân C7 | PA20 — GPIO / peripheral function |
| Chân C8 | PA21 — GPIO / peripheral function |
| Chân C9 | PA22 — GPIO / peripheral function |
| Chân C10 | PA23 — GPIO / peripheral function |
| Chân D1 | PA24 — GPIO / peripheral function |
| Chân D2 | PA25 — GPIO / peripheral function |
| Chân D3 | PA26 — GPIO / peripheral function |
| Chân D4 | PA27 — GPIO / peripheral function |
| Chân D5 | PA28 — GPIO / peripheral function |
| Chân D6 | PA29 — GPIO / peripheral function |
| Chân D7 | PA30 — GPIO / peripheral function |
| Chân D8 | PA31 — GPIO / peripheral function |
| Chân D9 | PB0 — GPIO / peripheral function |
| Chân D10 | PB1 — GPIO / peripheral function |
| Chân E1 | PB2 — GPIO / peripheral function |
| Chân E2 | PB3 — GPIO / peripheral function |
| Chân E3 | PB4 — GPIO / peripheral function |
| Chân E4 | PB5 — GPIO / peripheral function |
| Chân E5 | PB6 — GPIO / peripheral function |
| Chân E6 | PB7 — GPIO / peripheral function |
| Chân E7 | PB8 — GPIO / peripheral function |
| Chân E8 | PB9 — GPIO / peripheral function |
| Chân E9 | PB10 — GPIO / peripheral function |
| Chân E10 | PB11 — GPIO / peripheral function |
| Chân F1 | PB12 — GPIO / peripheral function |
| Chân F2 | PB13 — GPIO / peripheral function |
| Chân F3 | PB14 — GPIO / peripheral function |
| Chân F4 | VDDIO — I/O supply voltage |
| Chân F5 | GND — Ground |
| Chân F6 | PB15 — GPIO / peripheral function |
| Chân F7 | PB16 — GPIO / peripheral function |
| Chân F8 | PB17 — GPIO / peripheral function |
| Chân F9 | PB18 — GPIO / peripheral function |
| Chân F10 | PB19 — GPIO / peripheral function |
| Chân G1 | PB20 — GPIO / peripheral function |
| Chân G2 | PB21 — GPIO / peripheral function |
| Chân G3 | PB22 — GPIO / peripheral function |
| Chân G4 | PB23 — GPIO / peripheral function |
| Chân G5 | PB24 — GPIO / peripheral function |
| Chân G6 | PB25 — GPIO / peripheral function |
| Chân G7 | PB26 — GPIO / peripheral function |
| Chân G8 | PB27 — GPIO / peripheral function |
| Chân G9 | PB28 — GPIO / peripheral function |
| Chân G10 | PB29 — GPIO / peripheral function |
| Chân H1 | PC0 — GPIO / peripheral function |
| Chân H2 | PC1 — GPIO / peripheral function |
| Chân H3 | PC2 — GPIO / peripheral function |
| Chân H4 | PC3 — GPIO / peripheral function |
| Chân H5 | VDDIO — I/O supply voltage |
| Chân H6 | GND — Ground |
| Chân H7 | PC4 — GPIO / peripheral function |
| Chân H8 | PC5 — GPIO / peripheral function |
| Chân H9 | PC6 — GPIO / peripheral function |
| Chân H10 | PC7 — GPIO / peripheral function |
| Chân J1 | PC8 — GPIO / peripheral function |
| Chân J2 | PC9 — GPIO / peripheral function |
| Chân J3 | PC10 — GPIO / peripheral function |
| Chân J4 | PC11 — GPIO / peripheral function |
| Chân J5 | PC12 — GPIO / peripheral function |
| Chân J6 | PC13 — GPIO / peripheral function |
| Chân J7 | PC14 — GPIO / peripheral function |
| Chân J8 | PC15 — GPIO / peripheral function |
| Chân J9 | PC16 — GPIO / peripheral function |
| Chân J10 | PC17 — GPIO / peripheral function |
| Chân K1 | PC18 — GPIO / peripheral function |
| Chân K2 | PC19 — GPIO / peripheral function |
| Chân K3 | PC20 — GPIO / peripheral function |
| Chân K4 | PC21 — GPIO / peripheral function |
| Chân K5 | PC22 — GPIO / peripheral function |
| Chân K6 | PC23 — GPIO / peripheral function |
| Chân K7 | PC24 — GPIO / peripheral function |
| Chân K8 | PC25 — GPIO / peripheral function |
| Chân K9 | PC26 — GPIO / peripheral function |
| Chân K10 | PC27 — GPIO / peripheral function |
Ứng dụng tiêu biểu
ATSAME70N21A-CN phù hợp cho 6 Áp dụngs: Industrial EtherCAT Slave Controller, Building Automation Gateway, Professional Audio Mixer / USB Speaker, Medical Data Acquisition Instrument, HMI Controller with TFT Touchscreen, IIoT Edge Gateway Node.
Industrial EtherCAT Slave Controller
The ATSAME70N21A-CN's 300 MHz Cortex-M7 with IEEE 1588 hardware timestamping and integrated 10/100 Ethernet MAC makes it ideal for EtherCAT slave nodes. At full 300 MHz clock, the 6-stage superscalar pipeline executes the EtherCAT state machine plus application code within typical 100 microsecond cycle budgets. The 384 KB of multi-port SRAM buffers the EtherCAT mailbox and process data simultaneously without CPU stalls. The integrated USB 2.0 High-Speed PHY enables secondary diagnostics channels, while the dual CAN-FD controllers support gateway bridging. Compared with Cortex-M4 designs, the FPU and DSP instructions accelerate axis interpolation and servo control loops without offloading to an external DSP.
Được đề xuất
Building Automation Gateway
The ATSAME70N21A-CN is a strong fit for building automation gateways that aggregate KNX, BACnet, Modbus, and Ethernet/IP traffic. The Cortex-M7 core at 300 MHz plus 384 KB of SRAM handles concurrent TCP/IP stacks, TLS handshakes, and protocol translation without DMA saturation. Integrated 2 MB Flash stores gateway firmware with room for future feature additions. The dual CAN-FD controllers interface to HVAC and elevator subsystems, while the Ethernet MAC with IEEE 1588 synchronizes BACnet time schedules. The graphics-friendly HMI peripherals (LCD controller, ISI camera) enable optional touch-panel integration.
Được đề xuất
Professional Audio Mixer / USB Speaker
The ATSAME70N21A-CN suits professional audio mixers and USB speakers thanks to its hardware FPU, DSP instructions, I2S ports, and integrated USB 2.0 High-Speed PHY. The Cortex-M7 DSP extensions run audio codecs, EQ, and mixer DSP within tight latency budgets; the 384 KB SRAM buffers multiple I2S streams simultaneously. USB Audio Class 2.0 device mode streams 24-bit / 192 kHz audio directly without an external bridge. The SSC peripheral supports TDM and time-slot routing for multi-channel mixers. Compared with Cortex-M4 designs, the FPU doubles DSP throughput per MHz.
Được đề xuất
Medical Data Acquisition Instrument
Deterministic data acquisition in medical instruments benefits from the ATSAME70N21A-CN's 300 MHz Cortex-M7 core with single-cycle MAC and SIMD DSP instructions. The 12-bit 2 Msps ADC plus two 12-bit DACs support simultaneous stimulation and measurement channels. IEEE 1588 timestamping on the Ethernet MAC synchronizes multi-device clinical networks for hospital-wide signal acquisition. The 384 KB SRAM buffers high-rate sample bursts while the 2 MB Flash stores calibration tables and waveform libraries. Hardware FPU accelerates digital filter and FFT computations in real time.
Được đề xuất
HMI Controller with TFT Touchscreen
The ATSAME70N21A-CN powers HMI panels with TFT touchscreens and optional camera input through its integrated LCD controller and Image Sensor Interface (ISI). The Cortex-M7 at 300 MHz runs LVGL or emWin graphics stacks with smooth animations, while the 384 KB SRAM buffers frame updates. The 2 MB Flash stores fonts, icons, and multilingual resources. USB device mode enables firmware updates and configuration import. The Ethernet MAC with hardware timestamping supports PROFINET or EtherNet/IP HMI stations on the factory floor.
Được đề xuất
IIoT Edge Gateway Node
The ATSAME70N21A-CN functions as an IIoT edge gateway aggregating sensor data, running on-device analytics, and forwarding to cloud services. Its Cortex-M7 core plus FPU executes TinyML inference models for predictive maintenance directly on-device. The 2 MB Flash stores the gateway firmware plus on-device AI model weights; the 384 KB SRAM handles TLS connections and MQTT buffers. Dual CAN-FD and Ethernet with IEEE 1588 synchronize to industrial protocols; USB High-Speed device mode enables local configuration. Hardware cryptographic accelerators in the companion ATSAMS70N21A-CN variant protect firmware integrity.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME70N21A-CN — 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 | ATSAME70N20A-CN | ATSAME70N19A-CN | ATSAME70N21A-CNT | ATSAMS70N21A-CN | ATSAME70N21B-CN |
|---|---|---|---|---|---|---|
| Package | 100-pin TFBGA (9x9) | 100-pin TFBGA (9x9) - same | 100-pin TFBGA (9x9) - same | 100-pin TFBGA (9x9) - same | 100-pin TFBGA (9x9) - same | 100-pin TFBGA (9x9) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz |
| Flash | 2 MB | 1 MB | 512 KB | 2 MB | 2 MB | 2 MB |
| SRAM | 384 KB | 384 KB | 128 KB | 384 KB | 384 KB | 384 KB |
| USB PHY | Integrated HS USB 2.0 | Integrated HS USB 2.0 | Integrated HS USB 2.0 | Integrated HS USB 2.0 | Integrated HS USB 2.0 | Integrated HS USB 2.0 |
| Ethernet MAC | 10/100 + IEEE 1588 | 10/100 + IEEE 1588 | 10/100 + IEEE 1588 | 10/100 + IEEE 1588 | 10/100 + IEEE 1588 | 10/100 + IEEE 1588 |
| CAN-FD | 2 controllers | 2 controllers | 2 controllers | 2 controllers | 2 controllers | 2 controllers |
| Crypto Accelerator | No (use SAMS70 variant) | No | No | No | Yes (AES, secure boot) | No |
Bảo phân biệt quan trọng
- Highest Flash density in the SAM E70 TFBGA-100 family (vsATSAME70N20A-CN)
- Optional secure-boot and crypto accelerator available in pin-compatible S70 variant (vsATSAMS70N21A-CN)
- 300 MHz Cortex-M7 outperforms Cortex-M4 alternatives at similar cost (vsATSAME70N19A-CN)
Ghi chú thiết kế
The ATSAME70N21A-CN 100-pin TFBGA requires a 4-layer PCB minimum with continuous ground plane beneath the package for thermal dissipation and signal integrity. Place 100 nF decoupling capacitors as close as possible to each VDDIO pin, and add a 4.7 uF bulk capacitor near the VDDIN pin. Route the USB D+/D- traces as a 90 ohm differential pair with length matching within 150 mil per the USB 2.0 High-Speed specification. The Ethernet MII/RMII signals to the external PHY should be length-matched within 50 mil to meet IEEE 802.3 timing.
The ATSAME70N21A-CN integrates a 1.2V core LDO from VDDIN; supply VDDIN with a clean 3.3V rail capable of delivering 200 mA plus GPIO sink current. Estimated: at 300 MHz with all peripherals active, the core draws approximately 80 mA from VDDIN, plus another 50 mA spread across VDDIO banks. Use a low-noise LDO such as TPS7A4701 or a switching regulator with pi-filter for the analog VDDIO bank driving ADC/DAC. The VDDOUT pin provides the internal 1.2V core rail and should not be loaded externally beyond the datasheet specification.
For EtherCAT or industrial Ethernet operation, the 25 MHz RMII reference clock from the PHY must be jitter under 50 ps RMS to meet IEEE 1588 timestamping accuracy. Route the EMAC and PHY reference clock traces over a continuous ground plane, and avoid crossing them with noisy signal paths. The Cortex-M7's ICache and DCache reduce the average memory bus utilization, but burst-mode DMA transfers to Ethernet can still cause significant simultaneous switching noise; spread decoupling accordingly.
The ATSAME70N21A-CN in TFBGA-100 has a theta_JA of approximately 35 C/W per the SAM E70 datasheet. Estimated: at full 300 MHz operation with all peripherals active, the device dissipates approximately 0.5 W. In enclosed enclosures without airflow, ensure the ambient temperature stays below 85 C to maintain junction temperature under 105 C. For HMI or industrial panel designs, consider adding thermal vias beneath the TFBGA land pattern to spread heat to the inner ground planes.
Thông tin tuân thủ
Per GlobalSpec product record: Halogen Free Compliant; RoHS compliant per Microchip product page. AEC-Q100 not applicable - SAM E70 family targets industrial rather than automotive.