ATSAME70J20B-ANT - 300MHz Cortex-M7 MCU 1MB Flash | Microchip
MPN: ATSAME70J20B-ANT ✓ Hoạt độngATSAME70J20B-ANT Tóm tắt
An ARM Cortex-M7 microcontroller is a 32-bit embedded processor core from the Cortex-M family that targets high-performance deterministic real-time applications such as motor control, industrial automation, and audio processing. The Cortex-M7 supersedes Cortex-M4 by adding a double-precision FPU, instruction/data caches, and a 6-stage superscalar pipeline, placing it in the hierarchy: Cortex-M7 -> Cortex-M -> ARMv7-M architecture -> 32-bit MCU -> embedded microcontroller. The 'E' in SAM E70 indicates the 'Enhanced' family aimed at connectivity and graphics.
Key features of the ATSAME70J20B-ANT include a single-precision/double-precision hardware FPU, 16 KB instruction cache plus 16 KB data cache, tightly-coupled memory for zero-wait-state execution, and a multi-port SRAM architecture (MRAM) that allows simultaneous CPU and DMA access. The device operates from 1.62V to 3.6V core supply and supports industrial temperature grades up to +105 C. Communication peripherals include HS USB with on-chip PHY, dual CAN-FD, three FLEXCOMs (USART/SPI/TWI), three CAN-FD channels per the family datasheet, and an Ethernet MAC with 1588 PTP support.
The architecture combines deterministic interrupt response with DSP extensions (SIMD MAC instructions), enabling audio codec processing, predictive motor control algorithms, and high-bandwidth sensor fusion directly on-chip. The dual-bank Flash with read-while-write (RWW) capability supports in-field firmware upgrades without halting the application. This part is best suited to designs requiring high CPU throughput (1500+ CoreMark) combined with rich connectivity in a single IC.
Typical applications include industrial motor drives (FOC for PMSM/BLDC), IoT edge gateways with Ethernet, automotive body and infotainment subsystems, and graphics HMI panels. In audio applications, the Cortex-M7's DSP extensions accelerate sample-rate conversion and active noise cancellation.
When designing with the ATSAME70J20B-ANT, ensure the PCB layout provides a solid ground plane under the LQFP-64 footprint, place 100 nF decoupling on every VDD pin, and route the HS USB differential pair with 90 ohm impedance. The MRAM multi-port controller benefits from cache-coherent DMA configurations to avoid stale-data hazards during peripheral bursts.
This page synthesizes distributor pricing, drop-in alternatives from the SAME70 family and competitor Cortex-M7 parts, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATSAME70J20B-ANT — 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 ATSAME70J20B-ANT (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Operating Voltage, SRAM, Ethernet, Mounting Type.
ATSAME70J19B-ANT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70J20B-AN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70J19B-AN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70J19A-ANT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70J20B-ANT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M7 with FPU |
| Maximum CPU Clock | 300 MHz |
| Bit Width | 32-bit |
| Program Memory (Flash) | 1 MB (1024 KB) |
| SRAM | 384 KB (multi-port) |
| Hộp | 64-LQFP (10x10 mm) |
| Operating Voltage | 1.62 V to 3.6 V |
| FPU | Single + Double precision hardware |
| I-Cache / D-Cache | 16 KB / 16 KB |
| Nhiệt độ hoạt động | -40 C to +105 C (industrial) |
| USB | High-Speed USB with on-chip PHY |
| Ethernet | 10/100 MAC with 1588 PTP |
| CAN | CAN-FD |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân ATSAME70J20B-ANT
| Chân 1 | PD0 — GPIO / AFEC / TIO |
| Chân 2 | PD1 — GPIO / AFEC |
| Chân 3 | PD2 — GPIO / AFEC |
| Chân 4 | PD3 — GPIO / AFEC |
| Chân 5 | VDDIO — I/O supply (3.3 V) |
| Chân 6 | VSSIO — I/O ground |
| Chân 7 | PD4 — GPIO / AFEC |
| Chân 8 | PD5 — GPIO / AFEC |
| Chân 9 | PD6 — GPIO / AFEC |
| Chân 10 | PD7 — GPIO / AFEC |
| Chân 11 | VDDCORE — Core supply (1.2 V) |
| Chân 12 | VSS — Core ground |
| Chân 13 | PA0 — GPIO / FLEXCOM |
| Chân 14 | PA1 — GPIO / FLEXCOM |
| Chân 15 | PA2 — GPIO / FLEXCOM |
| Chân 16 | PA3 — GPIO / FLEXCOM |
| Chân 17 | PA4 — GPIO / FLEXCOM |
| Chân 18 | PA5 — GPIO / FLEXCOM |
| Chân 19 | PA6 — GPIO / FLEXCOM |
| Chân 20 | PA7 — GPIO / FLEXCOM |
| Chân 21 | PB0 — GPIO / SPI / TWI |
| Chân 22 | PB1 — GPIO / SPI / TWI |
| Chân 23 | PB2 — GPIO / SPI / TWI |
| Chân 24 | PB3 — GPIO / SPI / TWI |
| Chân 25 | VDDIO — I/O supply (3.3 V) |
| Chân 26 | VSSIO — I/O ground |
| Chân 27 | PB4 — GPIO / SPI / TWI |
| Chân 28 | PB5 — GPIO / SPI / TWI |
| Chân 29 | PB6 — GPIO / SPI / TWI |
| Chân 30 | PB7 — GPIO / SPI / TWI |
| Chân 31 | PC0 — GPIO / CAN-FD / LCD |
| Chân 32 | PC1 — GPIO / CAN-FD / LCD |
| Chân 33 | PC2 — GPIO / CAN-FD / LCD |
| Chân 34 | PC3 — GPIO / CAN-FD / LCD |
| Chân 35 | PC4 — GPIO / CAN-FD / LCD |
| Chân 36 | PC5 — GPIO / CAN-FD / LCD |
| Chân 37 | VDDIO — I/O supply (3.3 V) |
| Chân 38 | VSSIO — I/O ground |
| Chân 39 | PC6 — GPIO / CAN-FD / LCD |
| Chân 40 | PC7 — GPIO / CAN-FD / LCD |
| Chân 41 | PE0 — GPIO / EBI / SD |
| Chân 42 | PE1 — GPIO / EBI / SD |
| Chân 43 | PE2 — GPIO / EBI / SD |
| Chân 44 | PE3 — GPIO / EBI / SD |
| Chân 45 | PE4 — GPIO / EBI / SD |
| Chân 46 | PE5 — GPIO / EBI / SD |
| Chân 47 | NRST — Reset input, active low |
| Chân 48 | TDI — JTAG Test Data In |
| Chân 49 | TDO — JTAG Test Data Out |
| Chân 50 | TMS — JTAG Test Mode Select |
| Chân 51 | TCK — JTAG Test Clock |
| Chân 52 | VDDCORE — Core supply (1.2 V) |
| Chân 53 | VSS — Core ground |
| Chân 54 | PF0 — GPIO / Ethernet / USB |
| Chân 55 | PF1 — GPIO / Ethernet / USB |
| Chân 56 | PF2 — GPIO / Ethernet / USB |
| Chân 57 | PF3 — GPIO / Ethernet / USB |
| Chân 58 | PF4 — GPIO / Ethernet / USB |
| Chân 59 | PF5 — GPIO / Ethernet / USB |
| Chân 60 | VDDIO — I/O supply (3.3 V) |
| Chân 61 | VSSIO — I/O ground |
| Chân 62 | PF6 — GPIO / Ethernet / USB |
| Chân 63 | PF7 — GPIO / Ethernet / USB |
| Chân 64 | XIN — Crystal oscillator input |
Ứng dụng tiêu biểu
ATSAME70J20B-ANT phù hợp cho 6 Áp dụngs: Industrial Motor Control (FOC PMSM/BLDC), Industrial IoT Edge Gateway, Automotive Infotainment HMI, Audio DSP and USB Audio Interface, Robotics and CNC Motion Controllers, Smart Energy and Solar Inverters.
Industrial Motor Control (FOC PMSM/BLDC)
The ATSAME70J20B-ANT drives PMSM and BLDC motors with field-oriented control at sub-microsecond loop rates. Its 300 MHz Cortex-M7 with DSP SIMD instructions execute Clark/Park transforms and space-vector PWM updates in a single control cycle, while the 16-bit AFEC provides synchronized current sensing on three shunt resistors. The 384 KB MRAM holds observer state and sine tables without contention against the PWM DMA burst, and the dual-bank Flash supports in-field firmware A/B upgrades critical for production motor drives that cannot be returned for service. The 105 C industrial temperature rating supports under-hood and outdoor cabinet deployments.
Được đề xuất
Industrial IoT Edge Gateway
The ATSAME70J20B-ANT serves as the central processor in industrial IoT gateways, aggregating sensor data over CAN-FD, RS-485, and analog inputs before forwarding to the cloud over Ethernet. Its integrated 10/100 Ethernet MAC with IEEE 1588 PTP enables time-synchronized edge nodes for substation automation and process control. The HS USB with on-chip PHY supports LTE/WiFi dongles without external PHY ICs. With 1 MB Flash and 384 KB SRAM, the device runs Microchip Harmony TCP/IP stacks plus edge analytics firmware concurrently, while the Cortex-M7 caches keep the MPU responsive under interrupt load from multiple serial buses.
Được đề xuất
Automotive Infotainment HMI
The ATSAME70J20B-ANT drives 4.3-inch to 7-inch TFT-LCD automotive infotainment displays with its integrated 2D graphics controller and 24-bit RGB interface. The Cortex-M7's caches and high clock speed enable smooth LVGL/EmWin rendering at 60 fps for instrument clusters and HVAC controls. The dual CAN-FD channels connect to vehicle networks, while the HS USB serves media streaming from external storage. Operating from -40 C to +105 C supports the automotive cabin thermal environment, and 384 KB MRAM allows graphic frame buffering without external SDRAM in cost-sensitive designs.
Được đề xuất
Audio DSP and USB Audio Interface
The ATSAME70J20B-ANT excels in USB audio interfaces and DSP effects processors thanks to its 300 MHz Cortex-M7 SIMD MAC instructions and double-precision FPU. Designers implement biquad filters, parametric EQ, and FFT analysis at zero CPU overhead with the SIMD extension, while the HS USB with on-chip PHY delivers class-compliant UAC2 audio at 24-bit/192 kHz with sub-millisecond latency. The 384 KB multi-port SRAM buffers simultaneous USB IN/OUT and DSP pipelines without audible dropouts, and the 1 MB Flash stores factory presets, FIR coefficients, and the USB audio stack.
Được đề xuất
Robotics and CNC Motion Controllers
The ATSAME70J20B-ANT powers multi-axis robotic arm controllers and CNC machines by running inverse kinematics, trajectory planning, and PID loops at 300 MHz. Its Ethernet MAC with 1588 PTP synchronizes motion with industrial fieldbus networks, while the AFEC monitors motor currents for stall detection. The 384 KB MRAM stores motion profiles and calibration tables without DMA contention, and the dual-bank Flash supports safe firmware rollback for production robotics where downtime is unacceptable. The 64-LQFP package integrates cleanly with high-power motor driver boards sharing the same PCB.
Được đề xuất
Smart Energy and Solar Inverters
The ATSAME70J20B-ANT drives MPPT solar inverters and battery management systems by combining its DSP extensions for fast FFT-based grid harmonics analysis with the 16-bit AFEC for high-precision voltage/current sensing. The Cortex-M7 executes dual-stage MPPT algorithms in less than 5 microseconds, tracking rapid irradiance changes for 5 kW+ string inverters. The 384 KB MRAM stores historical telemetry for grid-tie compliance logs, and Ethernet with 1588 PTP synchronizes with utility grid frequency for anti-islanding protection. Industrial -40 C to +105 C operation supports outdoor inverter enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME70J20B-ANT — 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 | ATSAME70J19B-ANT | ATSAME70J20B-AN | ATSAME70J19B-AN | ATSAME70J19A-ANT |
|---|---|---|---|---|---|
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 1 MB | 512 KB | 1 MB | 512 KB | 512 KB |
| SRAM | 384 KB | 384 KB | 384 KB | 384 KB | 384 KB |
| CPU Clock | 300 MHz | 300 MHz | 300 MHz | 300 MHz | 300 MHz |
| Silicon Revision | B | B | B | B | A |
| Packaging Format | Tape & Reel | Tape & Reel | Tray | Tray | Tape & Reel |
| Operating Temperature | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C | -40 C to +105 C |
Bảo phân biệt quan trọng
- Largest on-chip Flash in 64-LQFP SAME70 family (vsATSAME70J19B-ANT)
- Latest silicon revision B (vsATSAME70J19A-ANT)
- Same die as J20 tray variant (vsATSAME70J20B-AN)
Ghi chú thiết kế
The ATSAME70J20B-ANT requires two separate supply rails: VDDCORE (1.2 V nominal, range 1.08-1.32 V) for the CPU core, and VDDIO (3.3 V nominal, range 1.62-3.6 V) for I/O and analog. Place a 100 nF ceramic decoupling capacitor within 2 mm of every VDD pin and a bulk 4.7 uF near the regulator. Power-on reset sequencing requires VDDIO to reach 1.62 V before VDDCORE enters regulation; use a power-management IC like the MCP16502 to coordinate the two rails with the required delay. Estimated: total supply current at 300 MHz full load is approximately 120 mA on VDDCORE and 35 mA on VDDIO, so budget 250 mA headroom from the LDO.
At 300 MHz with all peripherals active, the ATSAME70J20B-ANT typically dissipates approximately 600 mW to 800 mW inside the LQFP-64 package. The 64-LQFP-10x10 has a theta_JA of roughly 50 C/W on a standard 4-layer JEDEC test board (EIA/JESD51-7). Estimated: this gives a junction temperature rise of 30-40 C above ambient at full CPU load. For +105 C industrial environments, keep ambient below +65 C to stay within the +105 C junction limit at full clock speed. Adding thermal vias under the exposed pad or copper pour improves margin by 5-10 C.
Route the HS USB differential pair (DDM/DDP) with 90 ohm differential impedance on the top layer over a continuous ground plane, keeping trace length under 25 mm. Place the USB ESD protection (e.g., USBLC6-2SC6) within 5 mm of the USB connector and add 33 ohm series ferrite beads on D+/D- for EMI. The Ethernet MII/RMII traces to the external PHY should be length-matched within 2 mm to avoid skew on the parallel data lines. Decoupling capacitors must connect to ground with vias placed adjacent to the capacitor pads, never via daisy-chained traces.
Estimated: a common pitfall is forgetting to configure the MRAM wait states for 300 MHz operation - the Cortex-M7 will hard-fault if SRAM reads take longer than one cycle. Another common issue is enabling the HS USB PLL before the 12 MHz external crystal is stable, which can hang the USB controller and require a full power cycle. Always configure the SUPC (supply controller) and PMC (power management controller) according to the same70 family startup sequence in the datasheet, and use Microchip Harmony's startup files rather than rolling your own to avoid PLL misconfiguration bugs.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product environmental compliance program. Not AEC-Q100 qualified - this is the industrial-grade variant. For automotive AEC-Q100, request ATSAME70J20B-AUTO equivalent. Conflict-free per Microchip DRC statement.
