ATSAME70J20A-ANT - 300MHz Cortex-M7 MCU 1MB Flash 64-LQFP
MPN: ATSAME70J20A-ANT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $13.8 | $13.80 |
| 10 | $12.42 | $124.20 |
| 100 | $11.05 | $1,105.00 |
| 500 | $9.95 | $4,975.00 |
| 1,000 | $8.85 | $8,850.00 |
ATSAME70J20A-ANT Overview
What is a Cortex-M7 microcontroller? The ARM Cortex-M7 is a high-end 32-bit microcontroller core featuring a 6-stage superscalar pipeline with branch prediction, single-precision and double-precision floating-point unit (FPU), and tightly-coupled memory (TCM) for deterministic latency. The SAM E70 series extends the Cortex-M7 with Microchip's proprietary peripheral set, on-chip high-speed USB 2.0 PHY, 12-bit ADC up to 2 Msps, and an integrated 10/100 Ethernet MAC with IEEE 1588 PTP hardware support. This hierarchy places the part above Cortex-M4 controllers and below Cortex-A application processors in performance and integration.
Key specifications include 300 MHz core with 600 DMIPS and 1284 CoreMark performance, 1 MB Flash with ECC, 384 KB SRAM, an external bus interface for SDRAM, and a high-speed USB 2.0 PHY supporting Device, Host, and OTG modes. The 12-bit ADC provides up to 24 channels and 2 Msps conversion rate, while the HSMCI interface supports SD/SDHC cards. The integrated EMAC with 1588 PTP makes the device especially attractive for industrial Ethernet and motor-control protocols.
The architecture couples the Cortex-M7 core to an AHB/APB matrix with multi-layer bus arbitration, allowing simultaneous DMA-driven Ethernet, USB, and HSMCI transfers without CPU intervention. Hardware cryptography (AES, TRNG) and a Secure Bootloader enable tamper-resistant firmware. The on-chip FPU and DSP extensions accelerate audio codecs, motor-control loops, and sensor fusion at very low power.
Typical applications include industrial Ethernet gateways, PLC and motor-control servo drives, automotive infotainment and ADAS sensor hubs, medical patient monitors, and connected IoT edge nodes. The combination of LQFP-64 footprint and broad peripheral set also makes it a drop-in upgrade for designs previously built around Cortex-M4 devices.
When designing with this part, allocate the 64-LQFP ground pins properly to maintain signal integrity on the high-speed USB and Ethernet pairs. The 1.2V internal core regulator requires an external 1uF decoupling capacitor; placing it within 3 mm of the VCORE pin reduces startup jitter and improves EMC performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATSAME70J20A-ANT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAME70J20A-ANT (same form factor and footprint) — differing in Ethernet, Operating Temperature, Core Architecture, SRAM, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME70J19B-ANT
✅ Drop-In✓ In Stock
$9.55 / Unit
View Datasheet →ATSAME70J19A-ANT
✅ Drop-In✓ In Stock
$9.2 / Unit
View Datasheet →ATSAMS70J20A-ANT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMS70J19A-AN
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →ATSAME70J20A-ANT Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M7 |
| CPU Bit Width | 32-bit |
| Maximum CPU Frequency | 300 MHz |
| FPU | Single + Double Precision IEEE 754 |
| Program Flash | 1024 KB (1 MB) |
| SRAM | 384 KB |
| Operating Voltage (VDDIO) | 3.3 V |
| Operating Voltage (VDDCORE) | 1.2 V |
| Package | 64-LQFP (10x10 mm) |
| Pin Count | 64 |
| Temperature Grade | Industrial (-40C to +85C) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Packaging | Tape & Reel |
| USB Interface | USB 2.0 High-Speed PHY (Device/Host/OTG) |
| Ethernet | 10/100 MAC with 1588 PTP |
| CAN-FD | Yes |
| ADC | 12-bit, up to 24 channels, up to 2 Msps |
| AES / TRNG | Hardware AES 256-bit + True Random Number Generator |
ATSAME70J20A-ANT Pin Configuration
| Pin 1 | PB0 — GPIO/TC0_TIO2/PCK0 |
| Pin 2 | PB1 — GPIO/TC0_TIO3 |
| Pin 3 | PB2 — GPIO/TC0_TIO4 |
| Pin 4 | PB3 — GPIO/TC0_TIO5 |
| Pin 5 | VDDOUT — Voltage regulator output (1.2V) |
| Pin 6 | VDDIO — I/O supply (3.3V) |
| Pin 7 | GND — Ground |
| Pin 8 | VDDCORE — Core supply (1.2V) |
| Pin 9 | XIN — Crystal oscillator input |
| Pin 10 | XOUT — Crystal oscillator output |
| Pin 11 | NRST — Active-low reset input |
| Pin 12 | PA0 — GPIO/WKUP0 |
| Pin 13 | PA1 — GPIO/WKUP1 |
| Pin 14 | PA2 — GPIO |
| Pin 15 | PA3 — GPIO |
| Pin 16 | PA4 — GPIO |
| Pin 17 | PA5 — GPIO |
| Pin 18 | PA6 — GPIO |
| Pin 19 | PA7 — GPIO |
| Pin 20 | VDDIO — I/O supply (3.3V) |
| Pin 21 | GND — Ground |
| Pin 22 | PA8 — GPIO |
| Pin 23 | PA9 — GPIO/URXD0 |
| Pin 24 | PA10 — GPIO/UTXD0 |
| Pin 25 | PA11 — GPIO |
| Pin 26 | PA12 — GPIO |
| Pin 27 | PA13 — GPIO |
| Pin 28 | PA14 — GPIO |
| Pin 29 | PA15 — GPIO |
| Pin 30 | VDDIO — I/O supply (3.3V) |
| Pin 31 | GND — Ground |
| Pin 32 | PA16 — GPIO |
| Pin 33 | PA17 — GPIO |
| Pin 34 | PA18 — GPIO |
| Pin 35 | PA19 — GPIO |
| Pin 36 | PA20 — GPIO |
| Pin 37 | PA21 — GPIO |
| Pin 38 | PB4 — GPIO |
| Pin 39 | PB5 — GPIO |
| Pin 40 | PB6 — GPIO |
| Pin 41 | PB7 — GPIO |
| Pin 42 | PB8 — GPIO |
| Pin 43 | PB9 — GPIO |
| Pin 44 | VDDIO — I/O supply (3.3V) |
| Pin 45 | GND — Ground |
| Pin 46 | PB10 — GPIO |
| Pin 47 | PB11 — GPIO |
| Pin 48 | PB12 — GPIO |
| Pin 49 | PB13 — GPIO |
| Pin 50 | PB14 — GPIO |
| Pin 51 | VDDCORE — Core supply (1.2V) |
| Pin 52 | PC0 — GPIO |
| Pin 53 | PC1 — GPIO |
| Pin 54 | PC2 — GPIO |
| Pin 55 | PC3 — GPIO |
| Pin 56 | PC4 — GPIO |
| Pin 57 | PC5 — GPIO |
| Pin 58 | PC6 — GPIO |
| Pin 59 | PC7 — GPIO |
| Pin 60 | GND — Ground |
| Pin 61 | PC8 — GPIO |
| Pin 62 | PC9 — GPIO |
| Pin 63 | PC10 — GPIO |
| Pin 64 | PC11 — GPIO |
Typical Applications
ATSAME70J20A-ANT is suitable for 6 applications: Industrial Ethernet Gateway, Three-Phase Motor Control / Servo Drive, Automotive Infotainment and ADAS Sensor Hub, Medical Patient Monitor, IoT Edge Sensor Node with Cloud Connectivity, Audio Processing / Soundbar / Smart Speaker.
Industrial Ethernet Gateway
The ATSAME70J20A-ANT is purpose-built for industrial Ethernet gateways because its integrated 10/100 MAC with IEEE 1588 PTP hardware timestamping achieves sub-microsecond synchronization accuracy required by EtherCAT, PROFINET IRT, and TSN protocols. The 300 MHz Cortex-M7 core with double-precision FPU can run TCP/IP stacks plus protocol-specific schedulers concurrently while leaving cycles for application logic. With 1 MB Flash it holds full TLS libraries and Modbus/CIP firmware, and the 384 KB SRAM accommodates multi-connection TCP buffers without external memory. The 64-LQFP pinout exposes dedicated RMII/MII pins and GMII-compatible timers, reducing BOM cost versus external Ethernet PHYs. Engineers place the MCU between the PHY and the host controller with the on-chip USB 2.0 HS port carrying data uplink.
Recommended
Three-Phase Motor Control / Servo Drive
The ATSAME70J20A-ANT excels in three-phase motor control because its Cortex-M7 core runs field-oriented control (FOC) loops at 20-50 kHz while the dedicated PWM timer block outputs complementary center-aligned waveforms with hardware dead-time insertion. The integrated 12-bit ADC at 2 Msps synchronizes with the PWM triggers for sub-microsecond current-sense sampling, eliminating software jitter. The 1 MB Flash accommodates sensorless and encoder-based FOC libraries plus velocity/position PID loops, while 384 KB SRAM holds full state-space controller and observer data. The 64-LQFP exposes all PWM channels and ADC inputs without multiplexing, and the FPU accelerates park/clarke transforms in single-cycle math.
Recommended
Automotive Infotainment and ADAS Sensor Hub
The ATSAME70J20A-ANT suits automotive infotainment and ADAS sensor hub applications because it integrates USB 2.0 High-Speed PHY for media streaming, CAN-FD for vehicle network connectivity, and a high-throughput AHB matrix that supports simultaneous Ethernet (camera link), USB (touchscreen), and SD card (media) data flows without CPU intervention. The 1 MB Flash with ECC and hardware AES-256 enable secure firmware updates and content DRM. The 384 KB SRAM buffers camera frames at VGA resolution for pre-processing algorithms. With its industrial temperature grade (-40C to +85C), it serves body-electronics modules, instrument clusters, and surround-view ECUs that demand deterministic real-time behavior.
Recommended
Medical Patient Monitor
The ATSAME70J20A-ANT fits medical patient monitor designs because its Cortex-M7 with FPU runs ECG/EEG/spO2 signal-processing algorithms (FFT, wavelet transforms, finite-impulse-response filters) in real time at 300 MHz. The 12-bit ADC at 2 Msps captures multi-lead physiological signals simultaneously with synchronized sampling. The 1 MB Flash stores patient data logs, lookup tables, and waveform analysis libraries, while 384 KB SRAM holds intermediate DSP buffers. The hardware AES-256 and TRNG support HIPAA-compliant secure data transmission. The industrial-grade LQFP-64 package meets IEC 60601-1 reliability expectations when paired with proper isolation and the long-term Microchip silicon supply commitment.
Recommended
IoT Edge Sensor Node with Cloud Connectivity
The ATSAME70J20A-ANT powers IoT edge sensor nodes because its 300 MHz Cortex-M7 with DSP extensions processes sensor fusion (accelerometer + gyroscope + magnetometer) at high sample rates locally before transmitting only refined data over Ethernet, USB, or CAN-FD to the cloud. The 1 MB Flash holds full TLS stacks, MQTT-SN libraries, and on-device machine-learning inference models, while 384 KB SRAM buffers time-series data between transmissions. The integrated Ethernet MAC with IEEE 1588 enables industrial-grade time synchronization for distributed sensing. The 64-LQFP package and Microchip's long-term supply program suit industrial IoT deployments requiring 10+ year product lifecycles.
Recommended
Audio Processing / Soundbar / Smart Speaker
The ATSAME70J20A-ANT targets audio processing applications because its Cortex-M7 with double-precision FPU runs multi-channel audio decoders (Dolby, DTS, AAC) and acoustic echo cancellation algorithms at 48 kHz sample rates. The USB 2.0 High-Speed PHY accepts digital audio streams from PCs and mobile devices, while the I2S ports interface directly to Class-D amplifiers. The 1 MB Flash stores firmware plus licensing keys for premium codecs, and 384 KB SRAM holds audio buffers and coefficient tables. Multiple DMA channels enable parallel I2S streams to multiple amplifiers, and the 64-LQFP pinout exposes ample GPIO for LED ring/button-matrix interfaces.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME70J20A-ANT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME70J19B-ANT | ATSAME70J19A-ANT | ATSAMS70J20A-ANT | ATSAMS70J19A-AN |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| 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 |
| Flash | 1024 KB | 512 KB (-50%) | 512 KB (-50%) | 1024 KB | 512 KB (-50%) |
| SRAM | 384 KB | 256 KB (-33%) | 256 KB (-33%) | 384 KB | 256 KB (-33%) |
| Ethernet MAC | Yes (10/100 + 1588 PTP) | Yes (10/100 + 1588 PTP) | Yes (10/100 + 1588 PTP) | No (SAM S70 lacks EMAC) | No (SAM S70 lacks EMAC) |
| USB HS PHY | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) | Yes (integrated) |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tray |
Key Differentiators
- Largest Flash in 64-LQFP SAM E70 family (vs ATSAME70J19B-ANT)
- Integrated Ethernet MAC vs SAM S70 family (vs ATSAMS70J20A-ANT)
- Tape & Reel for production lines (vs ATSAME70J20A-AN)
Design Notes
The ATSAME70J20A-ANT requires a clean 3.3V supply on VDDIO and uses the internal 1.2V regulator (VDDOUT pin) to source VDDCORE. Place a 1uF X7R 0402 ceramic capacitor within 3 mm of the VDDOUT pin and a 100 nF decoupling capacitor on every VDDIO pin pair. For noise-sensitive analog peripherals (ADC, DAC), add a ferrite bead between the 3.3V digital and analog rails. The internal regulator can source up to 200 mA; if USB HS or Ethernet are active simultaneously at full load, ensure the supply can deliver at least 250 mA. Estimated: VDDIO 3.3V x 200 mA worst case = 660 mW dissipation at the VDDOUT pin, so provide adequate copper pour for heat dissipation.
A common design pitfall is omitting the external 32.768 kHz crystal loading capacitors on XIN/XOUT for RTC operation. The SAM E70 has built-in biasing but still needs external capacitors matching the crystal's load capacitance (typically 7-12 pF). Another pitfall is failing to configure the WKUP pins for low-power modes; the chip enters Wait mode with all peripherals running by default unless explicit clock gating is applied. Finally, ensure the NRST line has a 10 kOhm pull-up and a 100 nF capacitor to GND to guarantee clean reset behavior on power-up.
For the 64-LQFP package, route high-speed USB 2.0 HS differential pair (USB_DP, USB_DM) with 90 ohm differential impedance and length matching within 1 mm. Similarly, route the Ethernet RMII/MII signals (ETH_xxx) with controlled impedance and keep the PHY within 50 mm of the MCU. Provide a continuous ground plane under the LQFP footprint to reduce EMI and thermal resistance (estimated theta_JA 50 C/W for LQFP-64 on 4-layer JEDEC test board). Place a 4-layer PCB stack-up with 1 oz copper on outer layers and 0.5 oz on inner layers for best thermal performance.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C). For AEC-Q100 automotive applications, evaluate the ATSAME70Q20B-ANT automotive-qualified variant instead.
