ATSAME70N21A-CN - ARM Cortex-M7 300MHz MCU 2MB Flash 100-TFBGA | Microchip
MPN: ATSAME70N21A-CN ✓ AktifATSAME70N21A-CN Ringkasan
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.
Alternatif penggantian untuk ATSAME70N21A-CN — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian ATSAME70N21A-CN (sama faktor bentuk dan footprint) — berbeda di dalam ADC, Package, SRAM, Operating Temperature, USB.
ATSAME70N20A-CN
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAME70N19A-CN
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAME70N21A-CNT
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAMS70N21A-CN
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
ATSAME70N21B-CN
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAME70N21A-CN Rating Maksimal & Karakteristik Listrik
| Core Architecture | ARM Cortex-M7 with FPU |
| Frekuensi Bawah Maximum | 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 |
| Paket | 100-pin TFBGA (9x9 mm) |
| Tipe Mounting | 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 |
| Suhu Kerja | -40C to +105C (industrial) |
| Status RoHS | Compliant |
Konfigurasi Pin ATSAME70N21A-CN
| Pin produk A1 | VDDIO — I/O supply voltage |
| Pin produk A2 | PA0 — GPIO / peripheral function |
| Pin produk A3 | PA1 — GPIO / peripheral function |
| Pin produk A4 | PA2 — GPIO / peripheral function |
| Pin produk A5 | PA3 — GPIO / peripheral function |
| Pin produk A6 | VDDIN — Voltage regulator input supply |
| Pin produk A7 | GND — Ground |
| Pin produk A8 | VDDOUT — Voltage regulator output (core supply) |
| Pin produk A9 | PA4 — GPIO / peripheral function |
| Pin produk A10 | PA5 — GPIO / peripheral function |
| Pin produk B1 | PA6 — GPIO / peripheral function |
| Pin produk B2 | PA7 — GPIO / peripheral function |
| Pin produk B3 | PA8 — GPIO / peripheral function |
| Pin produk B4 | PA9 — GPIO / peripheral function |
| Pin produk B5 | VDDIO — I/O supply voltage |
| Pin produk B6 | GND — Ground |
| Pin produk B7 | PA10 — GPIO / peripheral function |
| Pin produk B8 | PA11 — GPIO / peripheral function |
| Pin produk B9 | PA12 — GPIO / peripheral function |
| Pin produk B10 | PA13 — GPIO / peripheral function |
| Pin produk C1 | PA14 — GPIO / peripheral function |
| Pin produk C2 | PA15 — GPIO / peripheral function |
| Pin produk C3 | PA16 — GPIO / peripheral function |
| Pin produk C4 | PA17 — GPIO / peripheral function |
| Pin produk C5 | PA18 — GPIO / XOUT32 (external 32 kHz crystal) |
| Pin produk C6 | PA19 — GPIO / XIN32 (external 32 kHz crystal) |
| Pin produk C7 | PA20 — GPIO / peripheral function |
| Pin produk C8 | PA21 — GPIO / peripheral function |
| Pin produk C9 | PA22 — GPIO / peripheral function |
| Pin produk C10 | PA23 — GPIO / peripheral function |
| Pin produk D1 | PA24 — GPIO / peripheral function |
| Pin produk D2 | PA25 — GPIO / peripheral function |
| Pin produk D3 | PA26 — GPIO / peripheral function |
| Pin produk D4 | PA27 — GPIO / peripheral function |
| Pin produk D5 | PA28 — GPIO / peripheral function |
| Pin produk D6 | PA29 — GPIO / peripheral function |
| Pin produk D7 | PA30 — GPIO / peripheral function |
| Pin produk D8 | PA31 — GPIO / peripheral function |
| Pin produk D9 | PB0 — GPIO / peripheral function |
| Pin produk D10 | PB1 — GPIO / peripheral function |
| Pin produk E1 | PB2 — GPIO / peripheral function |
| Pin produk E2 | PB3 — GPIO / peripheral function |
| Pin produk E3 | PB4 — GPIO / peripheral function |
| Pin produk E4 | PB5 — GPIO / peripheral function |
| Pin produk E5 | PB6 — GPIO / peripheral function |
| Pin produk E6 | PB7 — GPIO / peripheral function |
| Pin produk E7 | PB8 — GPIO / peripheral function |
| Pin produk E8 | PB9 — GPIO / peripheral function |
| Pin produk E9 | PB10 — GPIO / peripheral function |
| Pin produk E10 | PB11 — GPIO / peripheral function |
| Pin produk F1 | PB12 — GPIO / peripheral function |
| Pin produk F2 | PB13 — GPIO / peripheral function |
| Pin produk F3 | PB14 — GPIO / peripheral function |
| Pin produk F4 | VDDIO — I/O supply voltage |
| Pin produk F5 | GND — Ground |
| Pin produk F6 | PB15 — GPIO / peripheral function |
| Pin produk F7 | PB16 — GPIO / peripheral function |
| Pin produk F8 | PB17 — GPIO / peripheral function |
| Pin produk F9 | PB18 — GPIO / peripheral function |
| Pin produk F10 | PB19 — GPIO / peripheral function |
| Pin produk G1 | PB20 — GPIO / peripheral function |
| Pin produk G2 | PB21 — GPIO / peripheral function |
| Pin produk G3 | PB22 — GPIO / peripheral function |
| Pin produk G4 | PB23 — GPIO / peripheral function |
| Pin produk G5 | PB24 — GPIO / peripheral function |
| Pin produk G6 | PB25 — GPIO / peripheral function |
| Pin produk G7 | PB26 — GPIO / peripheral function |
| Pin produk G8 | PB27 — GPIO / peripheral function |
| Pin produk G9 | PB28 — GPIO / peripheral function |
| Pin produk G10 | PB29 — GPIO / peripheral function |
| Pin produk H1 | PC0 — GPIO / peripheral function |
| Pin produk H2 | PC1 — GPIO / peripheral function |
| Pin produk H3 | PC2 — GPIO / peripheral function |
| Pin produk H4 | PC3 — GPIO / peripheral function |
| Pin produk H5 | VDDIO — I/O supply voltage |
| Pin produk H6 | GND — Ground |
| Pin produk H7 | PC4 — GPIO / peripheral function |
| Pin produk H8 | PC5 — GPIO / peripheral function |
| Pin produk H9 | PC6 — GPIO / peripheral function |
| Pin produk H10 | PC7 — GPIO / peripheral function |
| Pin produk J1 | PC8 — GPIO / peripheral function |
| Pin produk J2 | PC9 — GPIO / peripheral function |
| Pin produk J3 | PC10 — GPIO / peripheral function |
| Pin produk J4 | PC11 — GPIO / peripheral function |
| Pin produk J5 | PC12 — GPIO / peripheral function |
| Pin produk J6 | PC13 — GPIO / peripheral function |
| Pin produk J7 | PC14 — GPIO / peripheral function |
| Pin produk J8 | PC15 — GPIO / peripheral function |
| Pin produk J9 | PC16 — GPIO / peripheral function |
| Pin produk J10 | PC17 — GPIO / peripheral function |
| Pin produk K1 | PC18 — GPIO / peripheral function |
| Pin produk K2 | PC19 — GPIO / peripheral function |
| Pin produk K3 | PC20 — GPIO / peripheral function |
| Pin produk K4 | PC21 — GPIO / peripheral function |
| Pin produk K5 | PC22 — GPIO / peripheral function |
| Pin produk K6 | PC23 — GPIO / peripheral function |
| Pin produk K7 | PC24 — GPIO / peripheral function |
| Pin produk K8 | PC25 — GPIO / peripheral function |
| Pin produk K9 | PC26 — GPIO / peripheral function |
| Pin produk K10 | PC27 — GPIO / peripheral function |
Aplikasi Umum
ATSAME70N21A-CN cocok untuk 6 aplikasis: 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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
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.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ATSAME70N21A-CN — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | 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 |
Diferensiator Kunci
- 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)
Catatan Desain
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.
Informasi Konformitas
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.