ATSAME70J20B-AN - 300MHz Cortex-M7 MCU, 1MB Flash | Microchip
MPN: ATSAME70J20B-AN ✓ فعالATSAME70J20B-AN نمای کلی
A microcontroller (MCU) is a self-contained computer on a single chip that combines a processor core, non-volatile program memory, volatile data memory, and a set of peripherals such as timers, serial interfaces, and analog converters. MCUs sit at the heart of embedded systems, forming the boundary between the physical world (sensors, actuators, motors) and digital processing. Within the product hierarchy, the ATSAME70J20B-AN is a 32-bit ARM Cortex-M7 MCU in the SAM E70 family, which belongs to the broader class of 32-bit microcontrollers and, above that, to embedded processors and semiconductors.
Key features include 1 MB Flash with 384 KB SRAM, a 12-bit ADC with up to 24 channels, dual CAN-FD controllers, USB 2.0 High-Speed with on-chip transceiver, 10/100 Ethernet MAC, and a wide 1.7 V to 3.6 V supply range. The Cortex-M7 core with double-precision FPU and DSP extensions enables single-cycle MAC operations, making the device suitable for motor control, audio processing, and real-time signal conditioning.
The SAM E70 architecture uses a multi-layer AHB bus matrix with 24 DMA channels, allowing peripherals to move data without CPU intervention. The embedded Flash accelerator and dual 16 KB caches reduce wait states at 300 MHz, sustaining near-zero-wait-state execution for deterministic control loops.
Typical applications include industrial motor drives, building automation gateways, IoT edge nodes with Ethernet/CAN connectivity, audio equipment, and test-and-measurement instruments. The 64-LQFP package with 114 GPIO pins provides ample I/O for multi-peripheral designs.
When designing with this device, ensure the VDDCORE and VDDPLL rails are decoupled with low-ESR ceramic capacitors and that the 12 MHz main crystal is placed close to the XIN/XOUT pins to minimize jitter. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
جایگزین‌های drop-in برای ATSAME70J20B-AN — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای ATSAME70J20B-AN (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Ethernet, Operating Temperature, CAN, Package, SRAM.
ATSAME70J20B-ANT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAME70J19B-AN
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAME70J19B-ANT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAME70J20A-AN
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAME70J20A-ANT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAME70J21B-AN
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAME70J20B-AN حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Processor | ARM Cortex-M7 with FPU |
| حداکثر فرکانس کلاک | 300 MHz |
| Program Memory Size | 1 MB (1M x 8) Flash |
| SRAM Size | 384 KB |
| عرض گذرگاه داده | 32-bit |
| Instruction Cache | 16 KB |
| Data Cache | 16 KB |
| ADC Resolution | 12-bit |
| ADC Channels | Up to 24 |
| Supply Voltage Range | 1.7 V to 3.6 V |
| دمای کاری | -40 C to +105 C |
| بسته‌بندی / کیس | 64-LQFP (10x10 mm) |
| Number of I/O | 114 |
| Connectivity | CAN-FD, Ethernet, USB 2.0 HS, SPI, I2C, USART |
| DMA Channels | 24 |
| نوع نصب | Surface Mount |
| وضعیت RoHS | Compliant |
| REACH Status | Compliant |
پیکربندی پین ATSAME70J20B-AN
| پین 1 | VDDIN — Voltage regulator input supply |
| پین 2 | VDDOUT — Voltage regulator output (core supply) |
| پین 3 | VDDCORE — Core supply voltage |
| پین 4 | VDDPLL — PLL supply voltage |
| پین 5 | GNDPLL — PLL ground |
| پین 6 | XIN — Main crystal oscillator input |
| پین 7 | XOUT — Main crystal oscillator output |
| پین 8 | NRST — Reset input (active low) |
| پین 9 | TST — Test pin (factory use) |
| پین 10 | PA0 — GPIO / ADC channel 0 |
| پین 11 | PA1 — GPIO / ADC channel 1 |
| پین 12 | PA2 — GPIO / ADC channel 2 |
| پین 13 | PA3 — GPIO / ADC channel 3 |
| پین 14 | PA4 — GPIO / ADC channel 4 |
| پین 15 | PA5 — GPIO / ADC channel 5 |
| پین 16 | PA6 — GPIO / ADC channel 6 |
| پین 17 | PA7 — GPIO / ADC channel 7 |
| پین 18 | PA8 — GPIO / USART0 TX |
| پین 19 | PA9 — GPIO / USART0 RX |
| پین 20 | PA10 — GPIO / USART1 TX |
| پین 21 | PA11 — GPIO / USART1 RX |
| پین 22 | PA12 — GPIO / SPI0 MOSI |
| پین 23 | PA13 — GPIO / SPI0 MISO |
| پین 24 | PA14 — GPIO / SPI0 SPCK |
| پین 25 | PA15 — GPIO / SPI0 NPCS0 |
| پین 26 | PA16 — GPIO / TWI0 SDA |
| پین 27 | PA17 — GPIO / TWI0 SCL |
| پین 28 | PA18 — GPIO / CAN0 TX |
| پین 29 | PA19 — GPIO / CAN0 RX |
| پین 30 | PA20 — GPIO / USB D- |
| پین 31 | PA21 — GPIO / USB D+ |
| پین 32 | PA22 — GPIO / USB ID |
| پین 33 | PA23 — GPIO / USB VBUS |
| پین 34 | PA24 — GPIO / PWM channel 0 |
| پین 35 | PA25 — GPIO / PWM channel 1 |
| پین 36 | PA26 — GPIO / PWM channel 2 |
| پین 37 | PA27 — GPIO / PWM channel 3 |
| پین 38 | PA28 — GPIO / Ethernet MDC |
| پین 39 | PA29 — GPIO / Ethernet MDIO |
| پین 40 | PA30 — GPIO / Ethernet TXD0 |
| پین 41 | PA31 — GPIO / Ethernet TXD1 |
| پین 42 | PB0 — GPIO / Ethernet RXD0 |
| پین 43 | PB1 — GPIO / Ethernet RXD1 |
| پین 44 | PB2 — GPIO / Ethernet TXEN |
| پین 45 | PB3 — GPIO / Ethernet CRS |
| پین 46 | PB4 — GPIO / Ethernet RXER |
| پین 47 | PB5 — GPIO / Ethernet REFCLK |
| پین 48 | PB6 — GPIO / TWI1 SDA |
| پین 49 | PB7 — GPIO / TWI1 SCL |
| پین 50 | PB8 — GPIO / CAN1 TX |
| پین 51 | PB9 — GPIO / CAN1 RX |
| پین 52 | PB10 — GPIO / USART2 TX |
| پین 53 | PB11 — GPIO / USART2 RX |
| پین 54 | PB12 — GPIO / SPI1 MOSI |
| پین 55 | PB13 — GPIO / SPI1 MISO |
| پین 56 | PB14 — GPIO / SPI1 SPCK |
| پین 57 | PB15 — GPIO / SPI1 NPCS0 |
| پین 58 | PB16 — GPIO / I2S0 TX |
| پین 59 | PB17 — GPIO / I2S0 RX |
| پین 60 | PB18 — GPIO / I2S0 SCK |
| پین 61 | PB19 — GPIO / I2S0 WS |
| پین 62 | PB20 — GPIO / ADC channel 8 |
| پین 63 | PB21 — GPIO / ADC channel 9 |
| پین 64 | GND — Ground |
کاربردهای معمول
ATSAME70J20B-AN مناسب است برای 6 کاربردs: Industrial Motor Control, IoT Edge Gateway with Ethernet and CAN, Audio Processing and Effects, Test and Measurement Instrumentation, Building Automation and HVAC Controllers, Portable Medical Monitoring Devices.
Industrial Motor Control
The ATSAME70J20B-AN fits industrial motor control because its 300 MHz Cortex-M7 core with double-precision FPU executes field-oriented control (FOC) loops in well under 10 microseconds, while the 12-bit ADC samples phase currents at up to 2 Msps. The dual CAN-FD controllers and 24-channel DMA allow encoder and bus traffic to be handled without CPU intervention, keeping the control loop deterministic. In a typical three-phase inverter, the MCU runs the Park/Clarke transforms and space-vector PWM while the ADC triggers synchronously from the PWM timer. The trade-off is that the 64-LQFP package offers 114 GPIO but no integrated gate driver, so external isolated drivers are still required for the power stage.
پیشنهادی
IoT Edge Gateway with Ethernet and CAN
The ATSAME70J20B-AN suits IoT edge gateways because it integrates a 10/100 Ethernet MAC, dual CAN-FD controllers, and USB 2.0 High-Speed with on-chip transceiver, eliminating external bridge chips. The 1 MB Flash and 384 KB SRAM accommodate a TCP/IP stack, TLS, and protocol translation firmware simultaneously, while the 300 MHz core handles packet processing at wire speed. In a typical gateway, the MCU bridges CAN sensor nodes to an Ethernet backhaul and buffers messages in SRAM using the 24-channel DMA. The trade-off is that the integrated Ethernet MAC still requires an external PHY and magnetics, adding BOM cost and board area compared with a module-based design.
پیشنهادی
Audio Processing and Effects
The ATSAME70J20B-AN is well suited to audio processing because the Cortex-M7 FPU and DSP extensions execute biquad filters and FFTs in single-precision floating point at 300 MHz, supporting multi-channel equalization and effects in real time. The 384 KB SRAM provides enough buffer space for 48 kHz/24-bit multi-channel delay lines, and the I2S/SSI peripherals interface directly to audio codecs. In a typical design, the MCU runs a 1024-point FFT in roughly 30 microseconds, leaving ample headroom for reverb and dynamics processing. The trade-off is that the 64-LQFP package has no integrated audio codec, so an external DAC/ADC such as the AK4558 is required.
پیشنهادی
Test and Measurement Instrumentation
The ATSAME70J20B-AN fits test and measurement instruments because its 12-bit ADC with up to 24 channels and 2 Msps conversion rate captures fast transients, while the 300 MHz core performs real-time filtering and RMS computation. The 1 MB Flash stores calibration tables and waveform data, and the USB 2.0 High-Speed interface streams measurements to a host PC at up to 480 Mbps. In a typical benchtop instrument, the MCU oversamples the ADC and applies digital averaging to reach 14-bit effective resolution. The trade-off is that the on-chip ADC has limited input range, so external programmable-gain amplifiers are needed for low-level signal capture.
پیشنهادی
Building Automation and HVAC Controllers
The ATSAME70J20B-AN suits building automation controllers because the dual CAN-FD and multiple USART/SPI/I2C interfaces connect to BACnet, Modbus, and sensor buses simultaneously, while the 300 MHz core runs the protocol stack and control logic. The wide 1.7 V to 3.6 V supply and -40 C to +105 C operating range support 24 V industrial backplanes with local regulation. In a typical HVAC controller, the MCU polls temperature and pressure sensors over I2C, drives damper actuators via PWM, and reports over Ethernet. The trade-off is that the 64-LQFP package requires careful thermal design when the ambient approaches 105 C.
پیشنهادی
Portable Medical Monitoring Devices
The ATSAME70J20B-AN fits portable medical monitoring because the Cortex-M7 FPU performs ECG filtering and QRS detection in real time, while the 12-bit ADC digitizes biopotential signals at up to 2 Msps. The 384 KB SRAM buffers continuous waveform data, and the USB 2.0 High-Speed interface transfers recordings to a host for analysis. In a typical wearable monitor, the MCU runs a 0.5 Hz to 40 Hz bandpass filter and computes heart rate using a Pan-Tompkins algorithm. The trade-off is that the 64-LQFP package and 300 MHz clock increase power consumption versus a Cortex-M4, so duty-cycled operation is needed for battery life.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAME70J20B-AN — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAME70J20B-ANT | ATSAME70J19B-AN | ATSAME70J20A-AN | ATSAME70J21B-AN |
|---|---|---|---|---|---|
| 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 |
| Core Processor | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU |
| Maximum Clock Frequency | 300 MHz | 300 MHz | 300 MHz | 300 MHz | 300 MHz |
| Flash Memory | 1 MB | 1 MB | 512 KB | 1 MB | 2 MB |
| SRAM | 384 KB | 384 KB | 256 KB | 384 KB | 384 KB |
| Supply Voltage Range | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| 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 |
| Packaging | Tray | Tape & Reel | Tray | Tray | Tray |
| Silicon Revision | B-revision | B-revision | B-revision | A-revision | B-revision |
تفاوت‌های کلیدی
- Full 1 MB Flash and 384 KB SRAM in the 64-LQFP footprint (در مقابلATSAME70J19B-AN)
- B-revision silicon with latest errata fixes (در مقابلATSAME70J20A-AN)
- Tray packaging for prototyping and low-volume builds (در مقابلATSAME70J20B-ANT)
- Headroom for larger firmware without package change (در مقابلATSAME70J21B-AN)
یادداشت‌های طراحی
Decouple VDDCORE, VDDPLL, and VDDIN with 100 nF ceramic capacitors placed within 5 mm of the respective pins, plus a 4.7 uF bulk capacitor on VDDIN. The internal core regulator requires a 2.2 uF low-ESR capacitor on VDDOUT; using a high-ESR capacitor can cause regulator instability and erratic core behavior at 300 MHz.
Place the 12 MHz main crystal and its two load capacitors as close as possible to XIN/XOUT, keeping the traces under 10 mm and guarded by ground. Route the USB D+/D- pair as a 90 ohm differential pair and keep the Ethernet TX/RX pairs matched to within 5 mil to preserve signal integrity at 100 Mbps.
Estimated: at 300 MHz with all peripherals active, the ATSAME70J20B-AN core current is approximately 60-80 mA at 1.2 V, giving roughly 100 mW of core dissipation. With a 64-LQFP theta_JA near 45 C/W, the junction rise is about 5 C above ambient, so no heatsink is required below 85 C ambient; verify with the actual peripheral load.
Do not leave the NRST pin floating; add a 10 kOhm pull-up to VDDIO and a 100 nF capacitor to ground to prevent spurious resets. Also ensure the TST pin is tied low or left per datasheet guidance, as incorrect termination can prevent the device from booting from Flash.
اطلاعات انطباق
EU RoHS compliant and REACH compliant per distributor compliance data. DRC conflict-free status reported by Abacus Technologies. Not AEC-Q100 qualified; contact Microchip for automotive-grade SAM variants.
