ATSAMV71Q21B-AAB - 300MHz Cortex-M7 MCU 2MB Flash | Microchip
MPN: ATSAMV71Q21B-AAB ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $22.5 | $22.50 |
| 10 | $20.4 | $204.00 |
| 100 | $18.2 | $1,820.00 |
| 250 | $16.85 | $4,212.50 |
| 500 | $15.6 | $7,800.00 |
ATSAMV71Q21B-AAB Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, RAM, and on-chip peripherals designed to embedded applications. Within the silicon taxonomy, the ATSAMV71Q21B-AAB sits in the hierarchy: Cortex-M7 core -> ARM 32-bit MCU -> microcontroller -> embedded IC -> semiconductor. The Cortex-M7 architecture is a superscalar pipeline with branch prediction, tightly coupled memory (TCM), and an instruction/data cache that delivers deterministic real-time performance alongside DSP-class signal processing throughput.
Key features include a 16-bit external bus interface (EBI) for SDRAM expansion, a graphics LCD controller for TFT panels, hardware cryptographic acceleration (AES, TRNG), and a 12-bit 2 Msps ADC. The device supports 1.8V, 2.5V, and 3.3V I/O operation and is qualified to AEC-Q100 for automotive applications, making it suitable for body electronics, infotainment HMI, and industrial motor control.
The Cortex-M7 core integrates DSP extensions (SIMD) and an FPU that handles single- and double-precision IEEE-754 operations. Combined with 16 KB I-cache + 16 KB D-cache and up to 384 KB system SRAM, it sustains the throughput needed for motor-control loops, audio processing, and predictive-maintenance algorithms on factory-floor equipment.
Typical applications include automotive body and chassis ECUs, industrial PLC and HMI controllers, motor-control inverters, audio and infotainment head units, and industrial IoT gateways. The integrated Ethernet MAC and HS USB simplify connectivity for industrial and automotive networking stacks.
When designing with this device, plan decoupling with bulk 4.7 uF + 100 nF per VDD pin pair and provide a 25 MHz external crystal with proper PCB guard routing. The AEC-Q100 grade adds cost only for the qualification itself - the silicon, footprint, and firmware are identical to industrial equivalents, enabling a single PCB design to serve both end markets.
This page synthesizes distributor pricing, drop-in alternatives within the SAM V71 family, and practical hardware-design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATSAMV71Q21B-AAB — 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 ATSAMV71Q21B-AAB (same form factor and footprint) — differing in Ethernet, Core, Operating Temperature, ADC, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME70Q21B-AN
✅ Drop-In✓ In Stock
$17.4 / Unit
View Datasheet →ATSAMS70Q21B-ANT
✅ Drop-In✓ In Stock
$15.85 / Unit
View Datasheet →ATSAMS70Q20A-AN
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$9.52 / Unit
View Datasheet →ATSAMV71Q21B-AAB Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M7 with FPU |
| Core Count | 1 |
| Data Bus Width | 32-bit |
| Maximum Clock Frequency | 300 MHz |
| Program Memory Size | 2 MB Flash |
| RAM Size | 384 KB |
| Supply Voltage Range | 1.8 V / 2.5 V / 3.3 V |
| Operating Temperature | -40C to +85C (industrial, per -AAB suffix) |
| Package | 144-LQFP (20x20 mm) |
| Mounting Type | Surface Mount |
| Ethernet | 10/100 Mbps MAC (MII/RMII) |
| USB | USB 2.0 High-Speed Host/Device |
| CAN | 2x CAN-FD |
| ADC | 12-bit, up to 2 Msps |
| External Bus Interface (EBI) | 16-bit (SDRAM support) |
| Crypto Accelerator | AES, TRNG |
| Graphics LCD Controller | Yes (TFT, up to 1024x768) |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Automotive Qualification | AEC-Q100 qualified (SAM V71 family) |
ATSAMV71Q21B-AAB Pin Configuration
| Pin 1 | VDDIO — I/O supply voltage |
| Pin 2 | PA0 — GPIO / peripheral function |
| Pin 3 | PA1 — GPIO / peripheral function |
| Pin 4 | PA2 — GPIO / peripheral function |
| Pin 5 | PA3 — GPIO / peripheral function |
| Pin 6 | PA4 — GPIO / peripheral function |
| Pin 7 | PA5 — GPIO / peripheral function |
| Pin 8 | PA6 — GPIO / peripheral function |
| Pin 9 | PA7 — GPIO / peripheral function |
| Pin 10 | PA8 — GPIO / peripheral function |
| Pin 11 | PA9 — GPIO / peripheral function |
| Pin 12 | PA10 — GPIO / peripheral function |
| Pin 13 | PA11 — GPIO / peripheral function |
| Pin 14 | PA12 — GPIO / peripheral function |
| Pin 15 | PA13 — GPIO / peripheral function |
| Pin 16 | PA14 — GPIO / peripheral function |
| Pin 17 | PA15 — GPIO / peripheral function |
| Pin 18 | PA16 — GPIO / peripheral function |
| Pin 19 | PA17 — GPIO / peripheral function |
| Pin 20 | GND — Ground |
| Pin 21 | PA18 — GPIO / peripheral function |
| Pin 22 | PA19 — GPIO / peripheral function |
| Pin 23 | PA20 — GPIO / peripheral function |
| Pin 24 | PA21 — GPIO / peripheral function |
| Pin 25 | PA22 — GPIO / peripheral function |
| Pin 26 | PA23 — GPIO / peripheral function |
| Pin 27 | PA24 — GPIO / peripheral function |
| Pin 28 | PA25 — GPIO / peripheral function |
| Pin 29 | PA26 — GPIO / peripheral function |
| Pin 30 | PA27 — GPIO / peripheral function |
| Pin 31 | PA28 — GPIO / peripheral function |
| Pin 32 | PA29 — GPIO / peripheral function |
| Pin 33 | PA30 — GPIO / peripheral function |
| Pin 34 | PA31 — GPIO / peripheral function |
| Pin 35 | PB0 — GPIO / peripheral function |
| Pin 36 | PB1 — GPIO / peripheral function |
| Pin 37 | PB2 — GPIO / peripheral function |
| Pin 38 | PB3 — GPIO / peripheral function |
| Pin 39 | PB4 — GPIO / peripheral function |
| Pin 40 | PB5 — GPIO / peripheral function |
| Pin 41 | PB6 — GPIO / peripheral function |
| Pin 42 | PB7 — GPIO / peripheral function |
| Pin 43 | PB8 — GPIO / peripheral function |
| Pin 44 | PB9 — GPIO / peripheral function |
| Pin 45 | PB10 — GPIO / peripheral function |
| Pin 46 | PB11 — GPIO / peripheral function |
| Pin 47 | PB12 — GPIO / peripheral function |
| Pin 48 | PB13 — GPIO / peripheral function |
| Pin 49 | PB14 — GPIO / peripheral function |
| Pin 50 | PB15 — GPIO / peripheral function |
| Pin 51 | VDDCORE — Core supply voltage (1.2V) |
| Pin 52 | GND — Ground |
| Pin 53 | PB16 — GPIO / peripheral function |
| Pin 54 | PB17 — GPIO / peripheral function |
| Pin 55 | PB18 — GPIO / peripheral function |
| Pin 56 | PB19 — GPIO / peripheral function |
| Pin 57 | PB20 — GPIO / peripheral function |
| Pin 58 | PB21 — GPIO / peripheral function |
| Pin 59 | PB22 — GPIO / peripheral function |
| Pin 60 | PB23 — GPIO / peripheral function |
| Pin 61 | PB24 — GPIO / peripheral function |
| Pin 62 | PB25 — GPIO / peripheral function |
| Pin 63 | PB26 — GPIO / peripheral function |
| Pin 64 | PB27 — GPIO / peripheral function |
| Pin 65 | PB28 — GPIO / peripheral function |
| Pin 66 | PB29 — GPIO / peripheral function |
| Pin 67 | PB30 — GPIO / peripheral function |
| Pin 68 | PB31 — GPIO / peripheral function |
| Pin 69 | PC0 — GPIO / peripheral function |
| Pin 70 | PC1 — GPIO / peripheral function |
| Pin 71 | PC2 — GPIO / peripheral function |
| Pin 72 | PC3 — GPIO / peripheral function |
| Pin 73 | PC4 — GPIO / peripheral function |
| Pin 74 | PC5 — GPIO / peripheral function |
| Pin 75 | PC6 — GPIO / peripheral function |
| Pin 76 | PC7 — GPIO / peripheral function |
| Pin 77 | PC8 — GPIO / peripheral function |
| Pin 78 | PC9 — GPIO / peripheral function |
| Pin 79 | PC10 — GPIO / peripheral function |
| Pin 80 | PC11 — GPIO / peripheral function |
| Pin 81 | PC12 — GPIO / peripheral function |
| Pin 82 | PC13 — GPIO / peripheral function |
| Pin 83 | PC14 — GPIO / peripheral function |
| Pin 84 | PC15 — GPIO / peripheral function |
| Pin 85 | PC16 — GPIO / peripheral function |
| Pin 86 | PC17 — GPIO / peripheral function |
| Pin 87 | PC18 — GPIO / peripheral function |
| Pin 88 | PC19 — GPIO / peripheral function |
| Pin 89 | PC20 — GPIO / peripheral function |
| Pin 90 | PC21 — GPIO / peripheral function |
| Pin 91 | PC22 — GPIO / peripheral function |
| Pin 92 | PC23 — GPIO / peripheral function |
| Pin 93 | PC24 — GPIO / peripheral function |
| Pin 94 | PC25 — GPIO / peripheral function |
| Pin 95 | PC26 — GPIO / peripheral function |
| Pin 96 | PC27 — GPIO / peripheral function |
| Pin 97 | PC28 — GPIO / peripheral function |
| Pin 98 | PC29 — GPIO / peripheral function |
| Pin 99 | PC30 — GPIO / peripheral function |
| Pin 100 | PC31 — GPIO / peripheral function |
| Pin 101 | PD0 — GPIO / peripheral function |
| Pin 102 | PD1 — GPIO / peripheral function |
| Pin 103 | PD2 — GPIO / peripheral function |
| Pin 104 | PD3 — GPIO / peripheral function |
| Pin 105 | PD4 — GPIO / peripheral function |
| Pin 106 | PD5 — GPIO / peripheral function |
| Pin 107 | PD6 — GPIO / peripheral function |
| Pin 108 | PD7 — GPIO / peripheral function |
| Pin 109 | PD8 — GPIO / peripheral function |
| Pin 110 | PD9 — GPIO / peripheral function |
| Pin 111 | PD10 — GPIO / peripheral function |
| Pin 112 | PD11 — GPIO / peripheral function |
| Pin 113 | PD12 — GPIO / peripheral function |
| Pin 114 | PD13 — GPIO / peripheral function |
| Pin 115 | PD14 — GPIO / peripheral function |
| Pin 116 | PD15 — GPIO / peripheral function |
| Pin 117 | PD16 — GPIO / peripheral function |
| Pin 118 | PD17 — GPIO / peripheral function |
| Pin 119 | PD18 — GPIO / peripheral function |
| Pin 120 | PD19 — GPIO / peripheral function |
| Pin 121 | PD20 — GPIO / peripheral function |
| Pin 122 | PD21 — GPIO / peripheral function |
| Pin 123 | PD22 — GPIO / peripheral function |
| Pin 124 | PD23 — GPIO / peripheral function |
| Pin 125 | PD24 — GPIO / peripheral function |
| Pin 126 | PD25 — GPIO / peripheral function |
| Pin 127 | PD26 — GPIO / peripheral function |
| Pin 128 | PD27 — GPIO / peripheral function |
| Pin 129 | PD28 — GPIO / peripheral function |
| Pin 130 | PD29 — GPIO / peripheral function |
| Pin 131 | PD30 — GPIO / peripheral function |
| Pin 132 | PD31 — GPIO / peripheral function |
| Pin 133 | PE0 — GPIO / peripheral function |
| Pin 134 | PE1 — GPIO / peripheral function |
| Pin 135 | PE2 — GPIO / peripheral function |
| Pin 136 | PE3 — GPIO / peripheral function |
| Pin 137 | PE4 — GPIO / peripheral function |
| Pin 138 | PE5 — GPIO / peripheral function |
| Pin 139 | VDDIO — I/O supply voltage |
| Pin 140 | GND — Ground |
| Pin 141 | NRST — Reset input (active-low) |
| Pin 142 | XIN — Crystal oscillator input |
| Pin 143 | XOUT — Crystal oscillator output |
| Pin 144 | VDDIO — I/O supply voltage |
Typical Applications
ATSAMV71Q21B-AAB is suitable for 7 applications: Automotive Body Electronics ECU, Industrial HMI / TFT Display Controller, Motor Control / Servo Drive, Automotive Infotainment Head Unit, Industrial IoT Gateway, Audio Processing / DSP Front-End, Predictive Maintenance Sensor Hub.
Automotive Body Electronics ECU
The ATSAMV71Q21B-AAB fits automotive body ECUs because of its AEC-Q100 Grade 2 qualification, dual CAN-FD controllers, and 300 MHz Cortex-M7 compute headroom. Body controllers handle door modules, seat controllers, lighting, and HVAC actuators that exchange dozens of CAN frames per millisecond. The CAN-FD peripheral supports bit rates up to 5 Mbps with payload up to 64 bytes, allowing multi-signal frames that the older CAN 2.0B cannot carry in a single transmission. The 384 KB SRAM provides buffer space for OBD-II diagnostic stacks, while the 12-bit ADC samples thermistor and current-sense inputs for actuator feedback. Pin-muxing through the MATRIX controller lets designers route CAN1, CAN2, LIN (via USART), and PWM channels without external mux ICs.
Recommended
Industrial HMI / TFT Display Controller
The ATSAMV71Q21B-AAB is well-suited for industrial HMI panels because the on-chip TFT LCD controller drives WQVGA to XGA panels directly without an external graphics controller. The 2 MB Flash stores full-frame buffers plus LVGL or emWin graphical stacks, while the 384 KB SRAM keeps two partial framebuffers for tear-free animation. Cortex-M7 SIMD instructions accelerate alpha blending and dithering at runtime. Combined with HS USB for touch-screen digitizer input and 10/100 Ethernet for Modbus TCP, the device replaces discrete graphics-CPU systems. The LQFP-144 footprint exposes all parallel RGB data lines plus the EBI for SDRAM expansion when full-HD panels are required.
Recommended
Motor Control / Servo Drive
The ATSAMV71Q21B-AAB is ideal for 3-phase servo drives and field-oriented-control (FOC) inverters because the 300 MHz Cortex-M7 executes FOC loops in single-digit microseconds. The PWM peripheral with 12-bit resolution and dead-time generators produces complementary 3-phase outputs at 20 kHz switching frequency, while the 12-bit 2 Msps ADC samples phase currents synchronously to the PWM. The Cortex-M7's single-precision FPU and SIMD instructions handle Park/Clarke transforms and PID loops with deterministic timing. The LQFP-144 footprint exposes 8 PWM channels and 24 ADC channels to support dual 3-phase stages or a 6-phase drive. Ethernet connectivity enables real-time EtherCAT slave implementations on the same silicon.
Recommended
Automotive Infotainment Head Unit
The ATSAMV71Q21B-AAB fits infotainment head units because it integrates an I2S digital audio port for DAC/ADC chaining, HS USB for smartphone CarPlay/Android Auto bridging, and the TFT LCD controller for the cluster display. The Cortex-M7 with 384 KB SRAM decodes MP3, AAC, and FLAC in real time while leaving cycles for voice-prompt mixing and chime synthesis. The CAN-FD peripheral exchanges vehicle-network messages with the body controller, while Ethernet AVB handles rear-seat entertainment streams. AEC-Q100 qualification and the -40C to +85C operating range make the device robust against cabin temperature swings.
Recommended
Industrial IoT Gateway
The ATSAMV71Q21B-AAB fits industrial IoT gateways because it integrates Ethernet MAC, USB, CAN-FD, and multiple UART/SPI ports on a single 300 MHz Cortex-M7 core. The device can run MQTT-SN, OPC-UA, or Modbus TCP clients while simultaneously aggregating sensor data over I2C, SPI, and analog inputs. The 2 MB Flash holds TLS certificates and a full Linux-like networking stack from lwIP, while the 384 KB SRAM buffers MQTT payloads. The 16-bit EBI allows SDRAM expansion to MB-class buffer pools for high-throughput stream aggregation. The LQFP-144 footprint simplifies through-hole-friendly PCB prototyping for industrial environments.
Recommended
Audio Processing / DSP Front-End
The ATSAMV71Q21B-AAB is suitable for audio-processing front-ends because the Cortex-M7 SIMD DSP extensions accelerate FFT, FIR, and biquad filter pipelines at low latency. The I2S peripheral streams multi-channel digital audio at 192 kHz sample rates, and the 12-bit ADC supports analog mic-array input. The 2 MB Flash stores audio-effect algorithms and voice-recognition models, while the 384 KB SRAM keeps multiple delay-line buffers for reverb and echo cancellation. The 300 MHz CPU leaves headroom for simultaneous AEC, noise-suppression, and beamforming pipelines running in real time on a 16 kHz voice-band stream.
Recommended
Predictive Maintenance Sensor Hub
The ATSAMV71Q21B-AAB fits predictive-maintenance sensor hubs because the Cortex-M7 SIMD DSP instructions accelerate FFT and envelope-analysis pipelines that detect bearing faults in 3-phase motors. The 12-bit 2 Msps ADC samples vibration signals from MEMS accelerometers at 50 kHz+ rates, while the 384 KB SRAM stores time-domain windows before FFT transformation. The Ethernet MAC pushes alerts over PROFINET or EtherCAT to the plant SCADA, and CAN-FD aggregates messages from local sub-controllers. AEC-Q100 qualification makes the same silicon suitable for vehicle-mounted predictive-maintenance controllers in commercial fleets.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMV71Q21B-AAB — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME70Q21B-AN | ATSAMS70Q21B-ANT | ATSAMS70Q20A-AN |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 144-LQFP (20x20 mm) | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same |
| Core | ARM Cortex-M7 + FPU | ARM Cortex-M7 + FPU | ARM Cortex-M7 + FPU | ARM Cortex-M7 + FPU |
| Maximum Clock Frequency | 300 MHz | 300 MHz | 300 MHz | 300 MHz |
| Program Memory | 2 MB Flash | 2 MB Flash | 2 MB Flash | 2 MB Flash |
| RAM | 384 KB | 384 KB | 384 KB | 384 KB |
| Automotive Grade (AEC-Q100) | Yes (Grade 2) | No (industrial) | No (industrial) | No (industrial) |
| CAN-FD | Yes (2x) | Yes (2x) | Yes (2x) | Yes (2x) |
| TFT LCD Controller | Yes | Yes | Yes | Yes |
Key Differentiators
- AEC-Q100 automotive qualification with on-chip CAN-FD (vs ATSAME70Q21B-AN)
- Highest-density Flash/RAM combination in SAM V family (vs ATSAMS70Q21B-ANT)
- Single PCB layout across automotive and industrial variants (vs ATSAMS70Q20A-AN)
Design Notes
The ATSAMV71Q21B-AAB requires two separate supply rails: VDDCORE (1.2V, internal LDO output) and VDDIO (1.8V/2.5V/3.3V). Per the SAM V71 family datasheet, place a 4.7 uF bulk + 100 nF decoupling pair on every VDDIO pin pair (1, 51, 139, 144 in this package) and a 10 uF + 100 nF pair on the VDDCORE supply. Use a ferrite bead between the external 3.3V regulator and the VDDIO pins if switching noise from the regulator is greater than 50 mVpp.
Route the external 25 MHz crystal traces (XIN/XOUT, pins 142/143) as short differential pairs with guard traces grounded on both sides. Keep the crystal within 5 mm of the MCU and avoid crossing any high-speed traces (USB DP/DN, Ethernet TX/RX). Use a 4-layer PCB with continuous GND plane beneath the LQFP-144 footprint for thermal dissipation and signal-integrity - the SAM V71 at full 300 MHz operation switches multiple GPIO banks at 50 MHz, requiring a low-impedance ground return path.
Estimated: at 300 MHz and full GPIO toggle load (33 mA typ per bank), the SAM V71 draws approximately 120 mA core current with 2 MB Flash active. Designers often forget the VDDCORE bypass sizing - inadequate capacitance causes VDD droop during ADC sampling, producing noisy measurements. Also note that the JTAG/SWD interface shares pins with the AHB peripheral controller; verify pin-mux configuration before boundary-scan testing or bootloader recovery.
The LQFP-144 package has a theta_JA of approximately 28 C/W on a 4-layer JEDEC test board. At 1.2V core, 120 mA load, the device dissipates approximately 144 mW (Estimated: V*I = 1.2V x 0.120A), producing a 4C junction-rise above ambient. No heatsink is required, but ambient temperature near the LQFP should not exceed 85C in sealed enclosures - consider venting or a small copper-pour heatsink on the top layer for industrial cabinets with no airflow.
Compliance Information
AEC-Q100 Grade 2 qualification confirmed via SAM V71 family datasheet (DS60001327). RoHS/REACH compliant per Microchip product environmental compliance information.
