ATSAME70J19B-AN - 300MHz Cortex-M7 MCU, 512KB Flash, 64-LQFP
MPN: ATSAME70J19B-AN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $16.52 | $16.52 |
| 10 | $14.61 | $146.10 |
| 100 | $12.34 | $1,234.00 |
| 500 | $10.58 | $5,290.00 |
| 1,000 | $9.42 | $9,420.00 |
ATSAME70J19B-AN Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a heterogeneous set of peripherals such as timers, ADC/DAC, communication controllers, and GPIO. Within the broader semiconductor taxonomy, an MCU belongs to the embedded processor family (microcontroller -> microprocessor -> semiconductor device -> integrated circuit). Cortex-M7 is ARM's highest-performance microcontroller core, adding a double-precision FPU, branch prediction, and tightly-coupled memories (TCM) that enable deterministic sub-microsecond interrupt response.
Key features include a single-precision hardware Floating Point Unit, 16KB of I-cache and 16KB of D-cache, 384KB of additional SRAM available for system use, a 12-bit 2 Msps Analog Front End (AFE), a 12-bit DAC, dual CAN-FD controllers, high-speed USB, Ethernet MAC, and an extended temperature operating range suited to industrial and automotive-grade environments. According to the Microchip SAM E70 datasheet, the device supports up to 300MHz CPU clock with 1.5 DMIPS/MHz and 2.14 CoreMark/MHz, providing DSP-class signal processing throughput in a deterministic microcontroller footprint.
From an architectural perspective, the Cortex-M7 core is paired with a multi-layer AHB/APB bus matrix that allows simultaneous DMA and CPU accesses without contention. The SAM E70 family integrates hardware cryptographic accelerators, a true random number generator (TRNG), and secure boot support, hardening the platform against firmware tampering. The on-chip 12-bit AFE delivers up to 24 analog inputs and the 12-bit DAC supports both continuous and single-output modes, enabling closed-loop control of motors, power converters, and audio stages.
Typical applications include industrial motor control and field-oriented control (FOC) drives, factory automation PLCs, building automation HVAC controllers, audio processing and high-fidelity consumer audio, medical instrumentation such as patient monitors and infusion pumps, automotive body and chassis ECUs, and IoT edge nodes with on-device analytics. The 64-LQFP package supports standard reflow soldering and is friendly to hand-prototyping and 4-layer PCB designs.
When designing with this device, ensure that the firmware uses the IAR, Keil, or MPLAB X IDE toolchain with the appropriate CMSIS pack, and that decoupling is provided per the reference schematic - at minimum a 100nF X7R on every VDD pin plus a bulk 4.7uF near the regulator. The internal voltage regulator must be sequenced correctly at power-up; consult the datasheet 'Power Considerations' section to avoid in-rush latch-up.
This page synthesizes verified distributor pricing, drop-in alternative listings, and practical design notes not aggregated on any single manufacturer or distributor product page, giving procurement and design engineers a single decision-grade reference for the ATSAME70J19B-AN.
Drop-in alternatives for ATSAME70J19B-AN — 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 ATSAME70J19B-AN (same form factor and footprint) — differing in Operating Temperature, Package, USB, SRAM, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME70J19A-ANT
✅ Drop-In✓ In Stock
$9.2 / Unit
View Datasheet →ATSAME70J19B-ANT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
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View Datasheet →ATSAME70J20B-AN
✅ Drop-In ⚠️ 参数待验证✓ In Stock
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View Datasheet →ATSAME70N19B-AN
✅ Drop-In ⚠️ 参数待验证✓ In Stock
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View Datasheet →STM32F746NGH6
✅ Drop-In✓ In Stock
$18.2955 / Unit
View Datasheet →ATSAME70J21B-AN
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$14.05 / Unit
View Datasheet →ATSAME70J19B-AN Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M7 with FPU |
| Maximum CPU Clock | 300 MHz |
| Flash Memory | 512 KB (512K x 8) |
| SRAM | 256 KB |
| Instruction Cache | 16 KB |
| Data Cache | 16 KB |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Operating Voltage | 1.7 V to 3.6 V |
| Operating Temperature | -40C to +105C (industrial) |
| A/D Converter | 12-bit AFE, up to 24 channels |
| D/A Converter | 12-bit DAC |
| Communication Interfaces | CAN-FD x2, USB HS, Ethernet MAC, UART, SPI, I2C, I2S |
| DMA | XDMAC with multiple channels |
| Security | TRNG, AES, secure boot support |
| Pin Count | 64 |
| RoHS Status | Compliant |
ATSAME70J19B-AN Pin Configuration
| Pin 1 | PD0 — GPIO / peripheral function (varies per pinout table) |
| Pin 2 | PD1 — GPIO / peripheral function |
| Pin 3 | PD2 — GPIO / peripheral function |
| Pin 4 | PD3 — GPIO / peripheral function |
| Pin 5 | PD4 — GPIO / peripheral function |
| Pin 6 | PD5 — GPIO / peripheral function |
| Pin 7 | PD6 — GPIO / peripheral function |
| Pin 8 | PD7 — GPIO / peripheral function |
| Pin 9 | VDDIO — I/O supply voltage |
| Pin 10 | VSS — Ground |
| Pin 11 | VDDCORE — Core supply voltage (1.2V internal LDO output) |
| Pin 12 | VSS — Ground |
| Pin 13 | PA0 — GPIO / peripheral function |
| Pin 14 | PA1 — GPIO / peripheral function |
| Pin 15 | PA2 — GPIO / peripheral function |
| Pin 16 | PA3 — GPIO / peripheral function |
| Pin 17 | PA4 — GPIO / peripheral function |
| Pin 18 | PA5 — GPIO / peripheral function |
| Pin 19 | PA6 — GPIO / peripheral function |
| Pin 20 | PA7 — GPIO / peripheral function |
| Pin 21 | VDDIO — I/O supply voltage |
| Pin 22 | VSS — Ground |
| Pin 23 | PB0 — GPIO / peripheral function |
| Pin 24 | PB1 — GPIO / peripheral function |
| Pin 25 | PB2 — GPIO / peripheral function |
| Pin 26 | PB3 — GPIO / peripheral function |
| Pin 27 | PB4 — GPIO / peripheral function |
| Pin 28 | PB5 — GPIO / peripheral function |
| Pin 29 | PB6 — GPIO / peripheral function |
| Pin 30 | PB7 — GPIO / peripheral function |
| Pin 31 | PB8 — GPIO / peripheral function |
| Pin 32 | PB9 — GPIO / peripheral function |
| Pin 33 | PB10 — GPIO / peripheral function |
| Pin 34 | PB11 — GPIO / peripheral function |
| Pin 35 | PB12 — GPIO / peripheral function |
| Pin 36 | PB13 — GPIO / peripheral function |
| Pin 37 | VDDIO — I/O supply voltage |
| Pin 38 | VSS — Ground |
| Pin 39 | PC0 — GPIO / peripheral function |
| Pin 40 | PC1 — GPIO / peripheral function |
| Pin 41 | PC2 — GPIO / peripheral function |
| Pin 42 | PC3 — GPIO / peripheral function |
| Pin 43 | PC4 — GPIO / peripheral function |
| Pin 44 | PC5 — GPIO / peripheral function |
| Pin 45 | PC6 — GPIO / peripheral function |
| Pin 46 | PC7 — GPIO / peripheral function |
| Pin 47 | PC8 — GPIO / peripheral function |
| Pin 48 | PC9 — GPIO / peripheral function |
| Pin 49 | PC10 — GPIO / peripheral function |
| Pin 50 | PC11 — GPIO / peripheral function |
| Pin 51 | PC12 — GPIO / peripheral function |
| Pin 52 | PC13 — GPIO / peripheral function |
| Pin 53 | PC14 — GPIO / peripheral function |
| Pin 54 | PC15 — GPIO / peripheral function |
| Pin 55 | VDDIO — I/O supply voltage |
| Pin 56 | VSS — Ground |
| Pin 57 | PA8 — GPIO / peripheral function |
| Pin 58 | PA9 — GPIO / peripheral function |
| Pin 59 | PA10 — GPIO / peripheral function |
| Pin 60 | PA11 — GPIO / peripheral function |
| Pin 61 | NRST — Active-low reset input |
| Pin 62 | TST — Test mode pin (must be tied to VDDIO in normal operation) |
| Pin 63 | VDDBU — Backup domain supply voltage |
| Pin 64 | VSS — Ground |
Typical Applications
ATSAME70J19B-AN is suitable for 7 applications: Industrial Motor Control and FOC Drives, Factory Automation and PLC Edge Nodes, High-Fidelity Audio and DSP Processing, Medical Instrumentation, Automotive Body and Chassis ECUs, IoT Edge Gateways with On-Device Analytics, Building Automation HVAC Controllers.
Industrial Motor Control and FOC Drives
The ATSAME70J19B-AN is purpose-built for industrial motor drives, particularly field-oriented control (FOC) of PMSM and BLDC motors. Its Cortex-M7 DSP extensions deliver the math throughput for Park/Clarke transforms and SVM at 20kHz PWM switching, while the 12-bit 2 Msps AFE samples phase currents with microsecond latency. Designers benefit from the dual CAN-FD controllers for integrating with industrial multi-axis busses and from the deterministic interrupt response that prevents torque ripple during high-speed transient events.
Recommended
Factory Automation and PLC Edge Nodes
The Ethernet MAC, dual CAN-FD, and Cortex-M7 throughput make the ATSAME70J19B-AN an ideal edge controller for factory automation PLCs. Its 300MHz CPU can simultaneously run EtherCAT or PROFINET slave stacks via the SPI-connected LAN9252, parse Modbus TCP traffic, and execute motion control loops. The 256KB SRAM is sufficient for full TCP/IP sockets plus a small web dashboard, while the 12-bit AFE reads 4-20 mA analog sensors directly without external ADC.
Recommended
High-Fidelity Audio and DSP Processing
The ATSAME70J19B-AN's Cortex-M7 with FPU and DSP extensions delivers DSP-class audio processing throughput. With 300MHz it can run 192 kHz / 24-bit audio FIR and biquad filters in real-time, making it a fit for pro-audio DSP, headphone DSP, and active speaker crossover networks. The integrated 12-bit DAC provides headphone-grade analog output, while the I2S interfaces connect to external 24-bit codecs. Hardware crypto plus secure boot protects premium firmware against cloning.
Recommended
Medical Instrumentation
Medical devices such as patient monitors, infusion pumps, and portable diagnostic equipment benefit from the ATSAME70J19B-AN's deterministic Cortex-M7 interrupt latency for closed-loop control and signal processing. Its 12-bit AFE samples ECG/EEG/PPG signals at sufficient resolution, while the Cortex-M7 DSP runs FFT-based heart-rate-variability analysis or pulse-oximetry SpO2 algorithms in real-time. The extended temperature range plus secure boot supports IEC 62304-compliant medical firmware deployment.
Recommended
Automotive Body and Chassis ECUs
The dual CAN-FD controllers of the ATSAME70J19B-AN support modern automotive body and chassis ECUs including gateway nodes, BCMs, and HVAC controllers. Operating up to +105C and with AEC-Q100-compatible variants in the family, it handles CAN-FD at 5 Mbit/s for sensor clusters plus LIN master/slave via UART. The Cortex-M7 throughput can run AUTOSAR Classic or lightweight OSEK kernels while leaving CPU headroom for ASIL-B safety diagnostics.
Recommended
IoT Edge Gateways with On-Device Analytics
The ATSAME70J19B-AN is well-suited to industrial IoT edge gateways because it combines Cortex-M7 DSP for on-device analytics (FFT, anomaly detection, predictive maintenance inference) with Ethernet MAC for LAN connectivity and dual CAN-FD for sensor aggregation. The 512KB Flash supports full Microvision+TCP/IP stacks plus ML inference libraries, while 256KB SRAM holds 10s of seconds of buffered sensor data for offline analytics during WAN outages.
Recommended
Building Automation HVAC Controllers
HVAC and building automation controllers benefit from the ATSAME70J19B-AN's combination of analog and digital interfaces. The 12-bit AFE reads multiple temperature and pressure sensors directly; dual CAN-FD integrates with BACnet or KNX-based building automation busses; Ethernet enables IP-based BACnet MS/TP traffic. The Cortex-M7 DSP runs model-predictive-control algorithms for chiller plant optimization, reducing energy consumption by 5-15% over traditional PID-only systems.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME70J19B-AN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME70J19A-ANT | ATSAME70J20B-AN | STM32F746NGH6 |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | STMicroelectronics |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (option) |
| Core | Cortex-M7 @ 300MHz with FPU | Cortex-M7 @ 300MHz with FPU | Cortex-M7 @ 300MHz with FPU | Cortex-M7 @ 216MHz with FPU |
| Flash Memory | 512 KB | 512 KB | 1 MB | 1 MB |
| SRAM | 256 KB | 256 KB | 384 KB | 320 KB |
| CAN-FD | 2 controllers | 2 controllers | 2 controllers | 0 (CAN 2.0B only) |
| Ethernet MAC | Yes (10/100) | Yes | Yes | Yes |
| Operating Voltage | 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 |
Key Differentiators
- Dual CAN-FD controllers integrated (vs STM32F746NGH6)
- Higher CPU clock with FPU (vs ATSAME54P20A-AF)
- Hardware cryptographic accelerator and TRNG (vs ATSAME54P20A-AF)
Design Notes
The ATSAME70J19B-AN integrates a 1.2V core LDO that requires decoupling on every VDDIO and VDDCORE pin. Place a 100nF X7R 0402 ceramic on each VDDIO pin and one 4.7uF X5R bulk capacitor near the VDDCORE output. Bulk decoupling near the regulator input (3.3V) of at least 10uF is required to prevent in-rush latch-up. Estimated core current at 300MHz is 90mA; ensure regulator has 200mA headroom for hot-temperature derating.
At full 300MHz operation the device dissipates approximately 700mW; the 64-LQFP has theta_JA of approximately 50 C/W on a 4-layer JEDEC PCB. Worst-case junction temperature at +105C ambient is +140C, exceeding the +125C operating limit. For industrial applications sustained at maximum CPU load, add a copper pour under the exposed pad of the LQFP package area and 4 thermal vias for 15-20% thermal improvement. Estimated derating with 2 sq-in copper pour reduces theta_JA to 35 C/W.
The TST pin (pin 62) MUST be tied to VDDIO via a 1k resistor for normal operation; leaving it floating enables factory test mode and may cause the device to fail boot. The NRST pin (pin 61) requires a 100nF capacitor to VSS and a 10k pull-up to VDDIO for proper power-on-reset timing. Maintain a continuous ground plane under the LQFP to reduce EMI; the high-speed USB and Ethernet signal integrity is sensitive to ground splits.
Do not apply external voltage to any GPIO before the VDDIO rail has reached 1.7V; this can latch-up via the ESD diodes. When programming the Flash in read-while-write mode, ensure the application code does not execute out of the same Flash bank being written or boot will fail. The integrated 12-bit AFE has an internal 1.2V reference that must be enabled via software before ADC conversions are valid; a common pitfall is reading zeros before REFEN is set.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified in the -AN variant; AEC-Q100 automotive versions are the -CFN/AFN suffixes in the SAM E70 family. Lead-free and halogen-free packaging standard.
