ATSAME70N21A-CN - ARM Cortex-M7 300MHz MCU 2MB Flash 100-TFBGA | Microchip
Référence : ATSAME70N21A-CN ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $33.42 | $33,42 |
| 10 | $30.08 | $300,80 |
| 100 | $26.74 | $2 674,00 |
| 500 | $24.06 | $12 030,00 |
| 1 000 | $22.73 | $22 730,00 |
ATSAME70N21A-CN Présentation
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.
Alternatives de remplacement direct pour ATSAME70N21A-CN — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATSAME70N21A-CN (même facteur de forme et même empreinte) — différant par ADC, Package, SRAM, Operating Temperature, USB.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAME70N20A-CN
✅ Remplacement direct✓ En stock
$7.75 / unité
Voir la fiche technique →ATSAME70N19A-CN
✅ Remplacement direct✓ En stock
$8.39 / unité
Voir la fiche technique →ATSAME70N21A-CNT
✅ Remplacement direct✓ En stock
$8.85 / unité
Voir la fiche technique →ATSAMS70N21A-CN
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAME70N21B-CN
✅ Remplacement direct✓ En stock
$12.1 / unité
Voir la fiche technique →ATSAME70N21A-CN Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM Cortex-M7 with FPU |
| Fréquence d'horloge maximale | 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 |
| Boîtier | 100-pin TFBGA (9x9 mm) |
| Type de montage | 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 |
| Température de fonctionnement | -40C to +105C (industrial) |
| Statut RoHS | Compliant |
Configuration des broches de ATSAME70N21A-CN
| Broche A1 | VDDIO — I/O supply voltage |
| Broche A2 | PA0 — GPIO / peripheral function |
| Broche A3 | PA1 — GPIO / peripheral function |
| Broche A4 | PA2 — GPIO / peripheral function |
| Broche A5 | PA3 — GPIO / peripheral function |
| Broche A6 | VDDIN — Voltage regulator input supply |
| Broche A7 | GND — Ground |
| Broche A8 | VDDOUT — Voltage regulator output (core supply) |
| Broche A9 | PA4 — GPIO / peripheral function |
| Broche A10 | PA5 — GPIO / peripheral function |
| Broche B1 | PA6 — GPIO / peripheral function |
| Broche B2 | PA7 — GPIO / peripheral function |
| Broche B3 | PA8 — GPIO / peripheral function |
| Broche B4 | PA9 — GPIO / peripheral function |
| Broche B5 | VDDIO — I/O supply voltage |
| Broche B6 | GND — Ground |
| Broche B7 | PA10 — GPIO / peripheral function |
| Broche B8 | PA11 — GPIO / peripheral function |
| Broche B9 | PA12 — GPIO / peripheral function |
| Broche B10 | PA13 — GPIO / peripheral function |
| Broche C1 | PA14 — GPIO / peripheral function |
| Broche C2 | PA15 — GPIO / peripheral function |
| Broche C3 | PA16 — GPIO / peripheral function |
| Broche C4 | PA17 — GPIO / peripheral function |
| Broche C5 | PA18 — GPIO / XOUT32 (external 32 kHz crystal) |
| Broche C6 | PA19 — GPIO / XIN32 (external 32 kHz crystal) |
| Broche C7 | PA20 — GPIO / peripheral function |
| Broche C8 | PA21 — GPIO / peripheral function |
| Broche C9 | PA22 — GPIO / peripheral function |
| Broche C10 | PA23 — GPIO / peripheral function |
| Broche D1 | PA24 — GPIO / peripheral function |
| Broche D2 | PA25 — GPIO / peripheral function |
| Broche D3 | PA26 — GPIO / peripheral function |
| Broche D4 | PA27 — GPIO / peripheral function |
| Broche D5 | PA28 — GPIO / peripheral function |
| Broche D6 | PA29 — GPIO / peripheral function |
| Broche D7 | PA30 — GPIO / peripheral function |
| Broche D8 | PA31 — GPIO / peripheral function |
| Broche D9 | PB0 — GPIO / peripheral function |
| Broche D10 | PB1 — GPIO / peripheral function |
| Broche E1 | PB2 — GPIO / peripheral function |
| Broche E2 | PB3 — GPIO / peripheral function |
| Broche E3 | PB4 — GPIO / peripheral function |
| Broche E4 | PB5 — GPIO / peripheral function |
| Broche E5 | PB6 — GPIO / peripheral function |
| Broche E6 | PB7 — GPIO / peripheral function |
| Broche E7 | PB8 — GPIO / peripheral function |
| Broche E8 | PB9 — GPIO / peripheral function |
| Broche E9 | PB10 — GPIO / peripheral function |
| Broche E10 | PB11 — GPIO / peripheral function |
| Broche F1 | PB12 — GPIO / peripheral function |
| Broche F2 | PB13 — GPIO / peripheral function |
| Broche F3 | PB14 — GPIO / peripheral function |
| Broche F4 | VDDIO — I/O supply voltage |
| Broche F5 | GND — Ground |
| Broche F6 | PB15 — GPIO / peripheral function |
| Broche F7 | PB16 — GPIO / peripheral function |
| Broche F8 | PB17 — GPIO / peripheral function |
| Broche F9 | PB18 — GPIO / peripheral function |
| Broche F10 | PB19 — GPIO / peripheral function |
| Broche G1 | PB20 — GPIO / peripheral function |
| Broche G2 | PB21 — GPIO / peripheral function |
| Broche G3 | PB22 — GPIO / peripheral function |
| Broche G4 | PB23 — GPIO / peripheral function |
| Broche G5 | PB24 — GPIO / peripheral function |
| Broche G6 | PB25 — GPIO / peripheral function |
| Broche G7 | PB26 — GPIO / peripheral function |
| Broche G8 | PB27 — GPIO / peripheral function |
| Broche G9 | PB28 — GPIO / peripheral function |
| Broche G10 | PB29 — GPIO / peripheral function |
| Broche H1 | PC0 — GPIO / peripheral function |
| Broche H2 | PC1 — GPIO / peripheral function |
| Broche H3 | PC2 — GPIO / peripheral function |
| Broche H4 | PC3 — GPIO / peripheral function |
| Broche H5 | VDDIO — I/O supply voltage |
| Broche H6 | GND — Ground |
| Broche H7 | PC4 — GPIO / peripheral function |
| Broche H8 | PC5 — GPIO / peripheral function |
| Broche H9 | PC6 — GPIO / peripheral function |
| Broche H10 | PC7 — GPIO / peripheral function |
| Broche J1 | PC8 — GPIO / peripheral function |
| Broche J2 | PC9 — GPIO / peripheral function |
| Broche J3 | PC10 — GPIO / peripheral function |
| Broche J4 | PC11 — GPIO / peripheral function |
| Broche J5 | PC12 — GPIO / peripheral function |
| Broche J6 | PC13 — GPIO / peripheral function |
| Broche J7 | PC14 — GPIO / peripheral function |
| Broche J8 | PC15 — GPIO / peripheral function |
| Broche J9 | PC16 — GPIO / peripheral function |
| Broche J10 | PC17 — GPIO / peripheral function |
| Broche K1 | PC18 — GPIO / peripheral function |
| Broche K2 | PC19 — GPIO / peripheral function |
| Broche K3 | PC20 — GPIO / peripheral function |
| Broche K4 | PC21 — GPIO / peripheral function |
| Broche K5 | PC22 — GPIO / peripheral function |
| Broche K6 | PC23 — GPIO / peripheral function |
| Broche K7 | PC24 — GPIO / peripheral function |
| Broche K8 | PC25 — GPIO / peripheral function |
| Broche K9 | PC26 — GPIO / peripheral function |
| Broche K10 | PC27 — GPIO / peripheral function |
Applications typiques
ATSAME70N21A-CN convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAME70N21A-CN — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Highest Flash density in the SAM E70 TFBGA-100 family (vs ATSAME70N20A-CN)
- Optional secure-boot and crypto accelerator available in pin-compatible S70 variant (vs ATSAMS70N21A-CN)
- 300 MHz Cortex-M7 outperforms Cortex-M4 alternatives at similar cost (vs ATSAME70N19A-CN)
Notes de conception
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.
Informations de conformité
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.