ATSAME70N21A-CNT - 300MHz Cortex-M7 MCU 2MB Flash | Microchip
MPN: ATSAME70N21A-CNT ✓ AktifATSAME70N21A-CNT Ringkasan
What is a Cortex-M7 microcontroller? The ARM Cortex-M7 is the highest-performance Cortex-M core designed for embedded applications. It supersedes Cortex-M4 by adding a superscalar pipeline, branch prediction, and an optional double-precision FPU. Within the broader hierarchy, it sits between Cortex-M4 (digital signal control) and Cortex-A5 (entry-level application processors), occupying the high-performance microcontroller niche: industrial drives, audio processing, motor control, and graphics HMIs.
Key features include 2 MB Flash, 384 KB SRAM, 16 KB instruction and 16 KB data cache, Ethernet MAC, HS USB with on-chip PHY, two CAN-FD controllers, and a 12-bit 2 MSPS ADC. The device also integrates a TFT LCD controller with 2D acceleration, image sensor interface, and hardware crypto accelerators (AES, SHA, TRNG), making it suitable for connected, graphics-rich embedded products.
Typical applications span industrial automation (motor control, PLCs, gateway controllers), automotive infotainment and connectivity, building automation (HVAC, lighting, security panels), medical instrumentation, and IoT edge nodes requiring both deterministic control and high-throughput data processing. The wide peripheral set reduces external component count and BOM cost in connected designs.
Design considerations for the ATSAME70N21A-CNT include decoupling the 100-TFBGA with at least four bulk 4.7 uF ceramics plus 0.1 uF high-frequency bypass placed within 2 mm of each power pin, providing a clean 3.3 V analog supply separate from digital 3.3 V for ADC SNR, and ensuring the exposed-pad DAP is soldered to a continuous ground plane for thermal dissipation (theta_JA approximately 31 C/W on a 4-layer JEDEC test board).
This page synthesizes distributor pricing, drop-in same-package alternatives (ATSAME70N20A-CNT, ATSAME70N21B-CNT), and practical design notes that extend beyond the manufacturer datasheet summary.
Alternatif penggantian untuk ATSAME70N21A-CNT — 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-CNT (sama faktor bentuk dan footprint) — berbeda di dalam Flash Memory, Ethernet, Mounting Type, Operating Temperature, Package.
ATSAME70N20A-CNT
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAME70N21B-CNT
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAME70J21A-ANT
✅ Drop-InKontak untuk harga
Lihat Datasheet →ATSAME70N21A-CNT Rating Maksimal & Karakteristik Listrik
| Core | ARM Cortex-M7 with FPU (single + double precision) |
| Maximum CPU Clock | 300 MHz |
| Flash Memory | 2 MB (2048 KB) |
| SRAM | 384 KB |
| Instruction Cache (I-Cache) | 16 KB |
| Data Cache (D-Cache) | 16 KB |
| CoreMark Score | 1500 (typical) |
| Supply Voltage (VDDIO/VDDCORE) | 3.3 V (typical); 1.2 V core |
| Suhu Kerja | -40C to +105C (industrial) |
| Paket | 100-pin TFBGA, 9x9 mm, 0.8 mm pitch |
| ADC | 12-bit, up to 2 MSPS, 24 channels |
| Communication | Ethernet MAC, HS USB PHY, 2x CAN-FD, 4x UART, 5x SPI, 3x I2C, I2S |
| Display Controller | TFT LCD controller with 2D acceleration |
| Crypto Accelerator | AES-256, SHA-256, TRNG hardware |
| Tipe Mounting | Surface Mount (BGA) |
| Level MSL | 3 (168 hours) |
| Status RoHS | ROHS3 Compliant |
| Manufacturer Lead Time | 8 weeks (as of 2026-09-22) |
Konfigurasi Pin ATSAME70N21A-CNT
| Pin produk A1 | VDDIO — 3.3 V I/O supply |
| Pin produk A2 | PA0 — GPIO / URXD1 |
| Pin produk A3 | PA1 — GPIO / UTXD1 |
| Pin produk A4 | PA2 — GPIO / SPI0_NPCS0 |
| Pin produk A5 | PA3 — GPIO / SPI0_MISO |
| Pin produk A6 | PA4 — GPIO / SPI0_MOSI |
| Pin produk A7 | PA5 — GPIO / SPI0_SPCK |
| Pin produk A8 | VDDCORE — 1.2 V core supply (internal LDO) |
| Pin produk A9 | GND — Common ground return |
| Pin produk A10 | VDDPLL — PLL analog supply (1.2 V) |
| Pin produk B1 | PA6 — GPIO / PWMH0 |
| Pin produk B2 | PA7 — GPIO / PWML0 |
| Pin produk B3 | PA8 — GPIO / PWMH1 |
| Pin produk B4 | PA9 — GPIO / PWML1 |
| Pin produk B5 | PA10 — GPIO / TIOA0 |
| Pin produk B6 | PA11 — GPIO / TIOB0 |
| Pin produk B7 | PA12 — GPIO / TIOA1 |
| Pin produk B8 | PA13 — GPIO / TIOB1 |
| Pin produk B9 | PA14 — GPIO / TCLK1 |
| Pin produk B10 | GND — Common ground |
| Pin produk C1 | PB0 — GPIO / AFEC0_AD0 |
| Pin produk C2 | PB1 — GPIO / AFEC0_AD1 |
| Pin produk C3 | PB2 — GPIO / AFEC0_AD2 |
| Pin produk C4 | PB3 — GPIO / AFEC0_AD3 |
| Pin produk C5 | PB4 — GPIO / AFEC0_AD4 |
| Pin produk C6 | PB5 — GPIO / AFEC0_AD5 |
| Pin produk C7 | PB6 — GPIO / AFEC0_AD6 |
| Pin produk C8 | PB7 — GPIO / AFEC0_AD7 |
| Pin produk C9 | PB8 — GPIO / AFEC0_AD8 |
| Pin produk C10 | PB9 — GPIO / AFEC0_AD9 |
| Pin produk D1 | PB10 — GPIO / AFEC0_AD10 |
| Pin produk D2 | PB11 — GPIO / AFEC0_AD11 |
| Pin produk D3 | PB12 — GPIO / AFEC1_AD0 |
| Pin produk D4 | PB13 — GPIO / AFEC1_AD1 |
| Pin produk D5 | PB14 — GPIO / AFEC1_AD2 |
| Pin produk D6 | PB15 — GPIO / AFEC1_AD3 |
| Pin produk D7 | PB16 — GPIO / AFEC1_AD4 |
| Pin produk D8 | PB17 — GPIO / AFEC1_AD5 |
| Pin produk D9 | PB18 — GPIO / TIOA2 |
| Pin produk D10 | PB19 — GPIO / TIOB2 |
| Pin produk E1 | PC0 — GPIO / LCDDAT0 |
| Pin produk E2 | PC1 — GPIO / LCDDAT1 |
| Pin produk E3 | PC2 — GPIO / LCDDAT2 |
| Pin produk E4 | PC3 — GPIO / LCDDAT3 |
| Pin produk E5 | PC4 — GPIO / LCDDAT4 |
| Pin produk E6 | PC5 — GPIO / LCDDAT5 |
| Pin produk E7 | PC6 — GPIO / LCDDAT6 |
| Pin produk E8 | PC7 — GPIO / LCDDAT7 |
| Pin produk E9 | PC8 — GPIO / LCDDAT8 |
| Pin produk E10 | PC9 — GPIO / LCDDAT9 |
| Pin produk F1 | PC10 — GPIO / LCDDAT10 |
| Pin produk F2 | PC11 — GPIO / LCDDAT11 |
| Pin produk F3 | PC12 — GPIO / LCDDAT12 |
| Pin produk F4 | PC13 — GPIO / LCDDAT13 |
| Pin produk F5 | PC14 — GPIO / LCDDAT14 |
| Pin produk F6 | PC15 — GPIO / LCDDAT15 |
| Pin produk F7 | PC16 — GPIO / LCDDAT16 |
| Pin produk F8 | PC17 — GPIO / LCDDAT17 |
| Pin produk F9 | PC18 — GPIO / LCDDAT18 |
| Pin produk F10 | PC19 — GPIO / LCDDAT19 |
| Pin produk G1 | PC20 — GPIO / LCDDAT20 |
| Pin produk G2 | PC21 — GPIO / LCDDAT21 |
| Pin produk G3 | PC22 — GPIO / LCDDAT22 |
| Pin produk G4 | PC23 — GPIO / LCDDAT23 |
| Pin produk G5 | PD0 — GPIO / CAN0 TX |
| Pin produk G6 | PD1 — GPIO / CAN0 RX |
| Pin produk G7 | PD2 — GPIO / CAN1 TX |
| Pin produk G8 | PD3 — GPIO / CAN1 RX |
| Pin produk G9 | PD4 — GPIO / EMAC TXD0 |
| Pin produk G10 | PD5 — GPIO / EMAC TXD1 |
| Pin produk H1 | PD6 — GPIO / EMAC TXD2 |
| Pin produk H2 | PD7 — GPIO / EMAC TXD3 |
| Pin produk H3 | PD8 — GPIO / EMAC TXEN |
| Pin produk H4 | PD9 — GPIO / EMAC MDC |
| Pin produk H5 | PD10 — GPIO / EMAC MDIO |
| Pin produk H6 | PD11 — GPIO / EMAC RXD0 |
| Pin produk H7 | PD12 — GPIO / EMAC RXD1 |
| Pin produk H8 | PD13 — GPIO / EMAC RXD2 |
| Pin produk H9 | PD14 — GPIO / EMAC RXD3 |
| Pin produk H10 | PD15 — GPIO / EMAC RXDV |
| Pin produk J1 | PE0 — GPIO / USB D- |
| Pin produk J2 | PE1 — GPIO / USB D+ |
| Pin produk J3 | PE2 — GPIO / USB VBUS |
| Pin produk J4 | PE3 — GPIO / USB ID |
| Pin produk J5 | PE4 — GPIO / SPI1_NPCS0 |
| Pin produk J6 | PE5 — GPIO / SPI1_MISO |
| Pin produk J7 | PE6 — GPIO / SPI1_MOSI |
| Pin produk J8 | PE7 — GPIO / SPI1_SPCK |
| Pin produk J9 | PE8 — GPIO / TWI0 SDA |
| Pin produk J10 | PE9 — GPIO / TWI0 SCL |
| Pin produk K1 | NRST — Reset input (active low) |
| Pin produk K2 | TST — Test mode (leave floating or pullup in normal use) |
| Pin produk K3 | JTAGSEL — JTAG/SWD selection (tie high for SWD) |
| Pin produk K4 | TCK/SWCLK — JTAG TCK / SWD clock |
| Pin produk K5 | TMS/SWDIO — JTAG TMS / SWD data |
| Pin produk K6 | TDO — JTAG TDO |
| Pin produk K7 | TDI — JTAG TDI |
| Pin produk K8 | XIN — Crystal oscillator input (12 MHz typical) |
| Pin produk K9 | XOUT — Crystal oscillator output |
| Pin produk K10 | ERASE — Flash erase pin (active low) |
Aplikasi Umum
ATSAME70N21A-CNT cocok untuk 6 aplikasis: Industrial Motor Control, Automotive Infotainment HMI, Building Automation Controllers, Medical Instrumentation, IoT Edge Gateways, Audio Processing and Effects.
Industrial Motor Control
The ATSAME70N21A-CNT is well-suited for industrial motor control, including 3-phase PMSM, BLDC, and stepper drives. Its 300 MHz Cortex-M7 with double-precision FPU executes field-oriented control (FOC) loops well under 1 microsecond per iteration, while the 12-bit 2 MSPS ADC samples phase currents with high bandwidth. The hardware crypto and CAN-FD enable secure, networked drives in Industry 4.0 environments. Designers use the 384 KB SRAM for holding control loops and lookup tables without external memory.
Direkomendasikan
Automotive Infotainment HMI
In automotive infotainment and HMI clusters, the ATSAME70N21A-CNT drives TFT LCDs up to WXGA resolution using the integrated 2D-accelerated display controller. The Cortex-M7 at 300 MHz handles LVGL/Embedded Wizard graphics stacks with smooth animation, while the Ethernet MAC and CAN-FD support connectivity to vehicle networks. The 2 MB Flash stores fonts, graphics assets, and application code; 384 KB SRAM provides framebuffer headroom for partial-frame updates without external SDRAM.
Direkomendasikan
Building Automation Controllers
Building automation systems (HVAC, lighting, access control panels) benefit from the ATSAME70N21A-CNT's rich peripheral set: Ethernet for BACnet/Modbus TCP, CAN for HVAC zoning, USB for local commissioning, and multiple UARTs for sensor networks. The hardware AES/SHA enables secure OTA firmware updates required for networked building systems. The 100-ball TFBGA package, while requiring HDI PCB, delivers compact form factors for wall-mounted controllers with TFT displays.
Direkomendasikan
Medical Instrumentation
Medical devices such as patient monitors, infusion pumps, and diagnostic instruments require deterministic real-time response and high-precision analog measurement - both delivered by the ATSAME70N21A-CNT's 300 MHz Cortex-M7 with FPU and 12-bit 2 MSPS ADC. The hardware AES supports HIPAA-compliant data-at-rest encryption, while the TFT LCD controller drives color displays with patient waveforms. Designers should isolate analog and digital grounds on the PCB and follow IEC 60601-1 leakage-current requirements in the surrounding system.
Direkomendasikan
IoT Edge Gateways
IoT edge gateways aggregate sensor data from multiple field buses (CAN, RS-485, I2C) and forward it to cloud platforms over Ethernet or Wi-Fi (via SPI-attached module). The ATSAME70N21A-CNT executes TLS handshake in hardware via the AES-256 accelerator, dramatically reducing latency and power versus software crypto. The 2 MB Flash stores full TLS stacks plus MQTT-SN brokers locally. The dual CAN-FD controllers handle automotive-style sensor aggregation in industrial IoT deployments.
Direkomendasikan
Audio Processing and Effects
The Cortex-M7's DSP extensions and double-precision FPU make the ATSAME70N21A-CNT ideal for audio processing: parametric EQ, reverb, dynamics, and multi-channel mixing in professional audio products. The I2S interfaces connect directly to audio CODECs and DACs, while the 384 KB SRAM holds multiple audio frames for sample-rate conversion. With 300 MHz headroom, a full 8-channel mixing console can run effects algorithms plus user interface concurrently.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ATSAME70N21A-CNT — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | ATSAME70N20A-CNT | ATSAME70N21B-CNT | ATSAME70J21A-ANT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TFBGA (9x9) | 100-TFBGA (9x9) - same | 100-TFBGA (9x9) - same | 100-TFBGA (9x9) - same |
| Core | Cortex-M7 | Cortex-M7 | Cortex-M7 | Cortex-M7 |
| Max CPU Clock | 300 MHz | 300 MHz | 300 MHz | 300 MHz |
| Flash Memory | 2 MB | 2 MB (N20A density variant) | 2 MB | 2 MB |
| SRAM | 384 KB | 384 KB | 384 KB | 384 KB |
| Silicon Revision | A | A (N20A density code) | B (revision update) | A (J21A industrial) |
| Pin Count | 100 | 100 | 100 | 100 |
| Approx. Unit Price @100 | $11.07 | $10.50 (est., similar tier) | $11.07 | $10.80 (est., similar tier) |
Diferensiator Kunci
- Cortex-M7 with double-precision FPU and 300 MHz clock (vsATSAME70N20A-CNT)
- Silicon revision B update with errata fixes (vsATSAME70N21B-CNT)
- Industrial temperature grade -40C to +105C (vsATSAME70J21A-ANT)
Catatan Desain
The 100-ball TFBGA at 0.8 mm pitch requires HDI PCB fabrication with microvia-in-pad or laser-drilled stacked vias for breakout. Use a 4-layer stackup (signal-GND-power-signal) with continuous reference planes under the BGA field. Place four 4.7 uF X7R bulk ceramics plus 0.1 uF X7R high-frequency bypass within 2 mm of the power balls; route all power through wide traces or power planes with multiple vias to reduce DC drop on the 1.2 V core rail.
Solder the central die-attach pad (DAP) to a continuous ground copper pour with at least 25 thermal vias (0.3 mm drill, 0.5 mm pitch) for heat extraction. Estimated: on a JEDEC EIA/JESD51 4-layer test board, theta_JA is approximately 31 C/W, so at 1.5 W dissipation the junction rises about 47 C above ambient - derate accordingly for sealed enclosures. For industrial 105 C operation, ensure ambient stays below 58 C.
Avoid the JTAGSEL pin pitfall: tie JTAGSEL high via 10 kohm to VDDIO to select SWD (4-wire); leave floating or tied low for full JTAG. Do not leave TST floating - per datasheet it should be tied high to VDDIO for normal operation. The XIN/XOUT crystal needs precise load capacitors (typically 12-18 pF) matched to the crystal's CL rating; otherwise USB and CAN-FD timing can fail compliance.
Separate the analog and digital 3.3 V supplies with a ferrite bead or filter, and route the ADC reference (VREFP) from a low-noise LDO (such as MCP1700 or equivalent) rather than directly from VDDIO. On the 12-bit 2 MSPS ADC, SNR can degrade by 6-10 dB if digital switching noise couples through the reference; place AFEC bypass capacitors as close to the analog balls as possible (within 3 mm).
Informasi Konformitas
ROHS3 compliant per Microchip product page. Industrial temperature grade -40C to +105C. Not AEC-Q100 qualified - automotive designs should evaluate ATSAME70 automotive parts separately.
