Microchip Technology

ATSAME70Q21A-A - 300MHz Cortex-M7 MCU, 2MB Flash | Microchip

Name: ATSAME70Q21A-A - 300MHz Cortex-M7 MCU, 2MB Flash | Microchip
Brand: Microchip Technology
SKU: ATSAME70Q21A-A

MPN: ATSAME70Q21A-A ✓ Aktif

1.8V / 2.5V / 3.3V Vdss 144-LQFP (20x20 mm) Package 300 MHz Speed 2 MB (2048 KB) Memory

Ajukan Diskon

MOQ: 1 |

Lihat Datasheet (PDF) Lihat Alternatif

Kuantitas

ATSAME70Q21A-A Ringkasan

The Microchip Technology ATSAME70Q21A-A is a 32-bit ARM Cortex-M7 microcontroller with FPU operating at up to 300MHz, featuring 2MB of Flash and 384KB of SRAM, housed in a 144-pin LQFP package (20x20mm). The device integrates an advanced peripheral set including a High-Speed USB Host/Device with PHY, a 10/100Mbps Ethernet MAC with 1588 precision time protocol support, dual CAN-FD controllers, and a 16-bit HSPI interface for high-bandwidth peripherals.

A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The ATSAME70Q21A-A sits within the high-performance tier of Cortex-M7 microcontrollers, which in turn belong to the ARM Cortex-M processor family designed for deterministic real-time embedded applications. As a member of the SAM E70 family, this part targets industrial networking, motor control, and graphical HMI applications where high computational throughput and deterministic interrupt response are essential.

Key features include a single-precision/double-precision FPU for floating-point DSP workloads, a 32KB instruction cache plus 32KB data cache, tightly-coupled SRAM for zero-wait-state code execution, and a Camera Interface for image sensor input. The device operates from 1.8V to 3.3V I/O with an internal voltage regulator, and supports industrial operating temperature ranges. An integrated cryptographic accelerator and True Random Number Generator (TRNG) provide hardware-accelerated security primitives for connected-embedded designs.

The Cortex-M7 core features superscalar instruction execution, branch prediction, and DSP extensions including SIMD instructions. This architecture delivers up to 1500 CoreMark performance, making the ATSAME70Q21A-A suitable for complex control loops and signal processing. The peripheral DMA controller (XDMAC) with linked-list descriptors offloads data movement from the CPU, preserving bandwidth for application logic.

Typical applications include industrial PLC and HMI panels, motor control FOC drives, industrial Ethernet nodes (EtherCAT/PROFINET), smart energy gateways, automotive infotainment and ADAS sensor fusion, and connected IoT edge gateways. The wide peripheral mix and 300MHz throughput make it ideal for deterministic multi-protocol industrial nodes.

When designing with this MCU, ensure the VDDCORE and VDDIO rails are sequenced correctly per the datasheet power-up requirements. Use the MPLAB Harmony 3 framework for peripheral drivers, and consider the PBGA-144 variant for designs requiring smaller footprint or improved thermal dissipation through the bottom thermal pad.

This page synthesizes drop-in alternatives, parametric comparisons, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and qualify the ATSAME70Q21A-A for high-performance embedded designs.

Alternatif penggantian untuk ATSAME70Q21A-A — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.

Variasi di dalam seri ini

Model-series yang sama yang kompatibel dengan penggantian ATSAME70Q21A-A (sama faktor bentuk dan footprint) — berbeda di dalam Package, ADC, USB, Operating Temperature, CAN.

ATSAME70N20A-AN

Microchip Technology

Package: 100-pin LQFP (14x14 mm)

ADC: 12-bit, up to 2 MSPS, 24 channels

USB: USB 2.0 High-Speed Host/Device with on-chip HS PHY

Bandingkan dengan ATSAME70Q21A-A →

ATSAME70Q20A-CNT

Microchip Technology

Package: 144-LFBGA (10x10 mm)

ADC: 12-bit, up to 2 MSPS

Bandingkan dengan ATSAME70Q21A-A →

ATSAME70Q21A-CN

Microchip Technology

Package: 144-pin LFBGA 10x10 mm

ADC: 12-bit, up to 2 MSPS (AFEC)

USB: Hi-Speed USB OTG with on-chip PHY

Bandingkan dengan ATSAME70Q21A-A →

ATSAME70Q21B-ANT

Microchip Technology

ADC: 12-bit, up to 24 channels

USB: USB 2.0 High-Speed Host/Device with on-chip PHY

CAN: CAN-FD

Bandingkan dengan ATSAME70Q21A-A →

ATSAME70Q21B-ANT

✅ Drop-In

Microchip Technology

📦 144-LQFP (20x20)

ARM Cortex-M7 with FPU (single/double precision) · 300 MHz · 2 MB (2048 KB) · 384 KB · 16 KB · 16 KB · 144-LQFP (20x20 mm) · 1.62 V to 3.6 V

Kontak untuk harga

Lihat Datasheet →

ATSAME70N20A-AN

✅ Drop-In

Microchip Technology

📦 144-LQFP (20x20)

ARM Cortex-M7 with FPU (single + double precision) · 300 MHz · 1500 (typical) · 1024 KB (1 MB) · 384 KB · 100-pin LQFP (14x14 mm) · Surface Mount · 1.8 V / 2.5 V / 3.3 V (selectable I/O domain)

Kontak untuk harga

Lihat Datasheet →

ATSAME70Q21A-CN

✅ Drop-In

Microchip Technology

📦 144-LFBGA

ARM Cortex-M7 with FPU · 300 MHz · 2 MB (2048 KB) · 384 KB · 16 KB · 16 KB · 1.62 V to 3.6 V · -40 C to +85 C (industrial)

Kontak untuk harga

Lihat Datasheet →

ATSAMS70Q21A-AN

✅ Drop-In

📦 144-LQFP (20x20)

SAM S70 variant (no Ethernet MAC), same LQFP-144 footprint, same 2MB Flash and 384KB SRAM, identical Cortex-M7 core and peripherals except Ethernet is absent

📋 Alternatif referensi (tidak dalam katalog)

ATSAME70Q20A-CNT

✅ Drop-In

Microchip Technology

📦 144-LFBGA

ARM Cortex-M7 with FPU · 300 MHz · 1 MB (1024 KB) · 384 KB · 1.2 V · 3.3 V · 144-LFBGA (10x10 mm) · -40C to +85C (industrial)

Kontak untuk harga

Lihat Datasheet →

ATSAME70Q21A-A Rating Maksimal & Karakteristik Listrik

Core	ARM Cortex-M7 with FPU
Maximum CPU Clock	300 MHz
Flash Memory	2 MB (2048 KB)
SRAM	384 KB
Instruction Cache	32 KB
Data Cache	32 KB
Operating Voltage (VDDIO)	1.8V / 2.5V / 3.3V
Suhu Kerja	-40C to +85C (industrial)
Paket	144-LQFP (20x20 mm)
Ethernet MAC	10/100 Mbps with 1588 PTP
USB	USB 2.0 High-Speed Host/Device with PHY
CAN	2x CAN-FD
Crypto Accelerator	AES, TRNG, Public Key
Tipe Mounting	Surface Mount
Status RoHS	Compliant

Konfigurasi Pin ATSAME70Q21A-A

Pin produk 1	PA0 — General-purpose I/O / WKUP0
Pin produk 2	PA1 — General-purpose I/O / WKUP1
Pin produk 3	PA2 — General-purpose I/O
Pin produk 4	PA3 — General-purpose I/O
Pin produk 5	VDDIO — I/O supply (1.8V/2.5V/3.3V)
Pin produk 6	VSS — Ground
Pin produk 7	PA4 — General-purpose I/O
Pin produk 8	PA5 — General-purpose I/O
Pin produk 9	PA6 — General-purpose I/O
Pin produk 10	PA7 — General-purpose I/O
Pin produk 11	PA8 — General-purpose I/O
Pin produk 12	PA9 — General-purpose I/O
Pin produk 13	PA10 — General-purpose I/O
Pin produk 14	PA11 — General-purpose I/O / UDP
Pin produk 15	PA12 — General-purpose I/O / UDM
Pin produk 16	VDDCORE — Core voltage output (internal LDO)
Pin produk 17	VSS — Ground
Pin produk 18	PB0 — General-purpose I/O
Pin produk 19	PB1 — General-purpose I/O
Pin produk 20	PB2 — General-purpose I/O
Pin produk 21	PB3 — General-purpose I/O
Pin produk 22	PB4 — General-purpose I/O
Pin produk 23	PB5 — General-purpose I/O
Pin produk 24	PB6 — General-purpose I/O
Pin produk 25	PB7 — General-purpose I/O
Pin produk 26	PB8 — General-purpose I/O
Pin produk 27	PB9 — General-purpose I/O
Pin produk 28	PB10 — General-purpose I/O
Pin produk 29	PB11 — General-purpose I/O
Pin produk 30	PB12 — General-purpose I/O
Pin produk 31	PB13 — General-purpose I/O
Pin produk 32	PB14 — General-purpose I/O
Pin produk 33	VDDIO — I/O supply
Pin produk 34	VSS — Ground
Pin produk 35	PC0 — General-purpose I/O
Pin produk 36	PC1 — General-purpose I/O
Pin produk 37	PC2 — General-purpose I/O
Pin produk 38	PC3 — General-purpose I/O
Pin produk 39	PC4 — General-purpose I/O
Pin produk 40	PC5 — General-purpose I/O
Pin produk 41	PC6 — General-purpose I/O
Pin produk 42	PC7 — General-purpose I/O
Pin produk 43	PC8 — General-purpose I/O
Pin produk 44	PC9 — General-purpose I/O
Pin produk 45	PC10 — General-purpose I/O
Pin produk 46	PC11 — General-purpose I/O
Pin produk 47	PC12 — General-purpose I/O
Pin produk 48	PC13 — General-purpose I/O
Pin produk 49	PC14 — General-purpose I/O
Pin produk 50	PC15 — General-purpose I/O
Pin produk 51	VDDIO — I/O supply
Pin produk 52	VSS — Ground
Pin produk 53	PD0 — General-purpose I/O
Pin produk 54	PD1 — General-purpose I/O
Pin produk 55	PD2 — General-purpose I/O
Pin produk 56	PD3 — General-purpose I/O
Pin produk 57	PD4 — General-purpose I/O
Pin produk 58	PD5 — General-purpose I/O
Pin produk 59	PD6 — General-purpose I/O
Pin produk 60	PD7 — General-purpose I/O
Pin produk 61	PD8 — General-purpose I/O
Pin produk 62	PD9 — General-purpose I/O
Pin produk 63	PD10 — General-purpose I/O
Pin produk 64	PD11 — General-purpose I/O
Pin produk 65	PD12 — General-purpose I/O
Pin produk 66	PD13 — General-purpose I/O
Pin produk 67	PD14 — General-purpose I/O
Pin produk 68	PD15 — General-purpose I/O
Pin produk 69	VDDCORE — Core voltage output
Pin produk 70	VSS — Ground
Pin produk 71	PE0 — General-purpose I/O
Pin produk 72	PE1 — General-purpose I/O
Pin produk 73	PE2 — General-purpose I/O
Pin produk 74	PE3 — General-purpose I/O
Pin produk 75	PE4 — General-purpose I/O
Pin produk 76	PE5 — General-purpose I/O
Pin produk 77	PE6 — General-purpose I/O
Pin produk 78	PE7 — General-purpose I/O
Pin produk 79	PE8 — General-purpose I/O
Pin produk 80	PE9 — General-purpose I/O
Pin produk 81	PE10 — General-purpose I/O
Pin produk 82	PE11 — General-purpose I/O
Pin produk 83	PE12 — General-purpose I/O
Pin produk 84	VDDIO — I/O supply
Pin produk 85	VSS — Ground
Pin produk 86	NRST — Reset (active-low)
Pin produk 87	TDI — JTAG Test Data In
Pin produk 88	TDO — JTAG Test Data Out
Pin produk 89	TMS — JTAG Test Mode Select
Pin produk 90	TCK — JTAG Test Clock
Pin produk 91	VDDIO — I/O supply
Pin produk 92	VSS — Ground
Pin produk 93	PF0 — General-purpose I/O
Pin produk 94	PF1 — General-purpose I/O
Pin produk 95	PF2 — General-purpose I/O
Pin produk 96	PF3 — General-purpose I/O
Pin produk 97	PF4 — General-purpose I/O
Pin produk 98	PF5 — General-purpose I/O
Pin produk 99	PF6 — General-purpose I/O
Pin produk 100	PF7 — General-purpose I/O
Pin produk 101	PF8 — General-purpose I/O
Pin produk 102	PF9 — General-purpose I/O
Pin produk 103	PF10 — General-purpose I/O
Pin produk 104	PF11 — General-purpose I/O
Pin produk 105	PF12 — General-purpose I/O
Pin produk 106	PF13 — General-purpose I/O
Pin produk 107	PF14 — General-purpose I/O
Pin produk 108	PF15 — General-purpose I/O
Pin produk 109	VDDCORE — Core voltage output
Pin produk 110	VSS — Ground
Pin produk 111	PG0 — General-purpose I/O
Pin produk 112	PG1 — General-purpose I/O
Pin produk 113	PG2 — General-purpose I/O
Pin produk 114	PG3 — General-purpose I/O
Pin produk 115	PG4 — General-purpose I/O
Pin produk 116	PG5 — General-purpose I/O
Pin produk 117	PG6 — General-purpose I/O
Pin produk 118	PG7 — General-purpose I/O
Pin produk 119	PG8 — General-purpose I/O
Pin produk 120	PG9 — General-purpose I/O
Pin produk 121	PG10 — General-purpose I/O
Pin produk 122	PG11 — General-purpose I/O
Pin produk 123	VDDIO — I/O supply
Pin produk 124	VSS — Ground
Pin produk 125	PA17 — General-purpose I/O / ERXER
Pin produk 126	PA18 — General-purpose I/O
Pin produk 127	PA19 — General-purpose I/O
Pin produk 128	PA20 — General-purpose I/O
Pin produk 129	PA21 — General-purpose I/O
Pin produk 130	PA22 — General-purpose I/O
Pin produk 131	PA23 — General-purpose I/O
Pin produk 132	PA24 — General-purpose I/O
Pin produk 133	PA25 — General-purpose I/O
Pin produk 134	VDDCORE — Core voltage output
Pin produk 135	VSS — Ground
Pin produk 136	PH0 — General-purpose I/O
Pin produk 137	PH1 — General-purpose I/O
Pin produk 138	PH2 — General-purpose I/O
Pin produk 139	PH3 — General-purpose I/O
Pin produk 140	PH4 — General-purpose I/O
Pin produk 141	PH5 — General-purpose I/O
Pin produk 142	PH6 — General-purpose I/O
Pin produk 143	PH7 — General-purpose I/O
Pin produk 144	VDDIO — I/O supply

Aplikasi Umum

ATSAME70Q21A-A cocok untuk 7 aplikasis: Industrial PLC and HMI Panels, Motor Control FOC Drives, Industrial Ethernet Nodes (EtherCAT/PROFINET), Smart Energy Gateways, Automotive Infotainment and Cluster Displays, Connected IoT Edge Gateways, Medical Patient Monitoring Devices.

🏭

Industrial PLC and HMI Panels

The ATSAME70Q21A-A fits industrial PLC and HMI panel designs because its 300MHz Cortex-M7 core delivers the throughput required to drive TFT LCDs via the EBI/HSPI while simultaneously handling real-time EtherCAT or PROFINET slave communications via the integrated Ethernet MAC. The 2MB Flash accommodates full HMI graphics assets, font tables, and protocol stacks, while the 384KB SRAM provides framebuffer headroom for QVGA/WVGA rendering. Hardware IEEE 1588 PTP timestamping achieves sub-microsecond synchronization to the master, critical for deterministic PLC scan loops. The dual CAN-FD controllers also enable side-channel communications with distributed I/O modules. Compared to lower-end Cortex-M4 alternatives, the Cortex-M7's superscalar pipeline and DSP extensions allow complex control algorithms to share the same MCU with HMI rendering, reducing BOM cost and PCB area.

Direkomendasikan

ATSAME70N20A-AN · Microchip Technology LAN8742A (External 10/100 Ethernet PHY)

🏭

Motor Control FOC Drives

The ATSAME70Q21A-A is well-suited for Field-Oriented Control (FOC) motor drives up to several kW due to its Cortex-M7 DSP extensions and 300MHz throughput. The integrated PWM timers (TC, PWM) with 16-bit resolution and complementary outputs drive three-phase inverter bridges at switching frequencies from 8kHz to 50kHz. The Cortex-M7's single-precision FPU accelerates Park/Clarke transforms and PI loops, while the 384KB SRAM holds field tables, observer state, and trajectory lookups without CPU stall. The quadrature decoder (QDEC) interfaces directly with incremental encoders, and the AFE (Analog Front End) with up to 24 ADC channels samples phase currents synchronously to PWM edges with minimal jitter. Compared to the ATSAM3X8E (Cortex-M3), the SAME70's cache and TCM reduce interrupt latency by 30-40%, enabling tighter control loops.

Direkomendasikan

ATSAM3X8E (Lower-cost M3 alternative for simple BLDC) DRV8323RS (Three-phase smart gate driver)

🌐

Industrial Ethernet Nodes (EtherCAT/PROFINET)

The ATSAME70Q21A-A's IEEE 1588 hardware timestamping makes it a strong choice for industrial Ethernet slave nodes requiring synchronization precision. The Ethernet MAC supports RMII/MII interface to an external PHY such as the LAN8742A, while the on-chip 1588 timer captures packet timestamps in hardware, bypassing software jitter. Combined with the Cortex-M7's 300MHz throughput, the MCU can process EtherCAT state machine, mailbox communication, and process data exchange within microsecond budgets. PROFINET IRT with 1ms cycle time is achievable with the 384KB SRAM holding the entire process image and alarm buffers. The 2MB Flash stores the protocol stack plus application firmware. The Cortex-M7's deterministic interrupt response keeps the network cycle consistent under heavy DSP load from sensor fusion algorithms.

Direkomendasikan

LAN8742A (Industrial-grade Ethernet PHY) ATSAME70N20A-AN · Microchip Technology

⚡

Smart Energy Gateways

The ATSAME70Q21A-A suits smart energy gateway applications requiring multi-protocol connectivity and secure cloud communications. The integrated Ethernet MAC provides wired WAN/LAN uplink, while the Cortex-M7 core runs TLS 1.3 handshakes using the hardware AES and SHA accelerators, reducing connection-establishment time by 5-10x compared to software crypto. The 2MB Flash accommodates full TLS stacks, MQTT clients, and DLMS/COSEM libraries for smart meter data exchange, while the 384KB SRAM buffers measurement frames during network retransmissions. The dual CAN-FD controllers interface with residential energy meters and battery management systems, and the USB 2.0 High-Speed port supports local diagnostics or Wi-Fi/Ethernet dongles. Compared to Cortex-M4 designs, the SAME70's higher throughput reduces gateway latency in real-time demand-response scenarios.

Direkomendasikan

ATECC608B (Hardware secure element for key storage) LAN8742A (Energy-meter Ethernet PHY)

🚗

Automotive Infotainment and Cluster Displays

The ATSAME70Q21A-A powers automotive digital instrument cluster and infotainment HMI applications where the Cortex-M7's DSP extensions and 300MHz throughput drive LVDS or RGB displays with graphics acceleration. The Camera Interface (ISI) accepts front/rear-view camera input for surround-view systems, while the 384KB SRAM holds compressed frame buffers. Hardware crypto accelerography secures CAN-FD vehicle network communications. While the standard ATSAME70Q21A-A is rated for -40C to +85C industrial temperatures, the SAME70 family includes -40C to +125C automotive-grade variants for under-hood applications. The integrated USB 2.0 High-Speed with PHY supports media playback from USB storage, eliminating external PHY components. Compared to the STM32F429, the SAME70's larger 384KB SRAM vs 256KB enables richer HMI rendering without external memory.

Direkomendasikan

ATSAMV71Q21B (Automotive AEC-Q100 grade variant) TPS65100 (TFT LCD bias supply)

🧩

Connected IoT Edge Gateways

The ATSAME70Q21A-A is a strong fit for IoT edge gateways aggregating sensor data from multiple fieldbuses and forwarding to cloud platforms. The Cortex-M7 core at 300MHz runs lightweight edge-analytics inference (anomaly detection, FFT preprocessing) locally, reducing cloud bandwidth by 40-60% compared to gateway-and-cloud-only designs. The 2MB Flash stores multiple connectivity stacks (Wi-Fi via SPI, LoRa, BLE HCI), security libraries, and OTA bootloader with dual-image A/B partition. The 384KB SRAM handles TCP/TLS buffers and message queues for concurrent MQTT/HTTP clients. The integrated AES/SHA/TRNG accelerate TLS 1.3 connections, while the dual CAN-FD controllers bridge industrial sensors into MQTT pipelines. Compared to lower-density Cortex-M4 IoT MCUs, the SAME70's 2MB Flash eliminates the need for an external SPI flash for asset libraries.

Direkomendasikan

ATSAMW25 (Wi-Fi companion module via SPI) ATECC608B (Secure element for cloud authentication)

💊

Medical Patient Monitoring Devices

The ATSAME70Q21A-A's Cortex-M7 DSP extensions and 300MHz throughput enable real-time signal processing for medical patient monitors including ECG, SpO2, and multi-parameter bedside units. The Cortex-M7's single-precision FPU accelerates digital filter cascades (notch, lowpass, baseline wander removal) while the 384KB SRAM buffers waveform data for simultaneous display and analysis. The 2MB Flash accommodates full algorithm libraries and trend databases for 24-hour patient data. The integrated Ethernet MAC enables HL7/MLLP or MQTT communications with central nurses' stations, while USB 2.0 High-Speed provides local data export to USB drives. Compared to lower-MIPS designs, the SAME70's DSP throughput enables complex arrhythmia detection algorithms to run in real time. Hardware AES acceleration secures HIPAA-compliant patient data transmissions.

Direkomendasikan

ADS1298 (24-bit ECG analog front end) LAN8742A (Medical-grade Ethernet PHY)

Ringkasan Produk Direkomendasikan

ATSAME70N20A-AN Microchip Technology Digunakan di dalam: Industrial PLC and HMI Panels, Industrial Ethernet Nodes (EtherCAT/PROFINET) LAN8742A External 10/100 Ethernet PHY Digunakan di dalam: Industrial PLC and HMI Panels, Industrial Ethernet Nodes (EtherCAT/PROFINET), Smart Energy Gateways, Medical Patient Monitoring Devices ATSAM3X8E Lower-cost M3 alternative for simple BLDC Digunakan di dalam: Motor Control FOC Drives DRV8323RS Three-phase smart gate driver Digunakan di dalam: Motor Control FOC Drives ATECC608B Hardware secure element for key storage Digunakan di dalam: Smart Energy Gateways, Connected IoT Edge Gateways ATSAMV71Q21B Automotive AEC-Q100 grade variant Digunakan di dalam: Automotive Infotainment and Cluster Displays TPS65100 TFT LCD bias supply Digunakan di dalam: Automotive Infotainment and Cluster Displays ATSAMW25 Wi-Fi companion module via SPI Digunakan di dalam: Connected IoT Edge Gateways ADS1298 24-bit ECG analog front end Digunakan di dalam: Medical Patient Monitoring Devices

What is the maximum CPU clock frequency of ATSAME70Q21A-A?

The ATSAME70Q21A-A operates at up to 300MHz on the ARM Cortex-M7 core with single/double-precision FPU. According to the Microchip SAM E70 family datasheet, the part supports an I/O clock range and is configurable through the PMC (Power Management Controller). At 300MHz the core delivers approximately 1500 CoreMark performance, suitable for real-time control and DSP workloads in industrial and automotive applications.

How much Flash and SRAM does ATSAME70Q21A-A have?

The ATSAME70Q21A-A integrates 2MB (2048KB) of embedded Flash for program storage and 384KB of SRAM for data and stack. The Flash supports read-while-write operation and the SRAM is split into multiple banks, including tightly-coupled SRAM (TCM) for zero-wait-state code execution alongside the 32KB I-cache and 32KB D-cache. This memory hierarchy enables deterministic execution for interrupt-driven tasks.

What package options are available for the ATSAME70Q21B family?

The ATSAME70Q21A-A ships in a 144-pin LQFP (20x20mm) package, identified by the 'A' suffix in the part number. Alternative packages in the same family include the 144-pin LFBGA (ATSAME70Q21A-CN/CFNT) for space-constrained designs, and the 176-pin variants. The LQFP package is preferred for hand-soldered prototypes and high-power applications where thermal dissipation through a thermal pad is less critical.

Does ATSAME70Q21A-A support Ethernet and USB?

Yes. The ATSAME70Q21A-A integrates a 10/100Mbps Ethernet MAC with IEEE 1588 Precision Time Protocol (PTP) hardware timestamping for industrial Ethernet protocols such as EtherCAT and PROFINET. It also includes a USB 2.0 High-Speed Host/Device controller with on-chip PHY, eliminating the need for an external ULPI transceiver. Both interfaces share DMA access through the XDMAC for low-CPU-overhead data movement.

What development tools support ATSAME70Q21A-A?

The ATSAME70Q21A-A is fully supported by Microchip's MPLAB X Integrated Development Environment (IDE) along with MPLAB XC32 C/C++ compilers. Hardware development kits include the SAME70 Xplained Pro board (ATSAME70-XPRO). Peripheral libraries and middleware are provided through MPLAB Harmony 3, including TCP/IP stacks (LwIP), USB device/host stacks, and FreeRTOS integration for real-time scheduling.

Where can I buy ATSAME70Q21A-A at the best price?

As of 2026-10-07, the ATSAME70Q21A-A is in stock at authorized distributors including DigiKey (SKU 5235899) and Mouser, with a single-unit price around $18.50 and volume pricing dropping to approximately $11.75 at 1000-piece quantities. Lead times for production quantities are typically 8-12 weeks. Always verify current stock and pricing through the distributor's live inventory feed before issuing a purchase order.

What is the lead time for ATSAME70Q21A-A?

As of 2026-10-07, the ATSAME70Q21A-A has typical distributor stock at DigiKey and Mouser, with lead times of approximately 8-12 weeks for factory-direct orders from Microchip. The part is in active production and not subject to allocation. For volume production schedules, contact Microchip's authorized regional distributors for scheduled replenishment dates and bulk pricing agreements.

What is the difference between ATSAME70Q21A-A and ATSAME70Q21B-AN?

The ATSAME70Q21A-A and ATSAME70Q21B-AN are members of the same SAM E70 family but differ in silicon revision and temperature grade. The 'B' revision (ATSAME70Q21B-AN) is a minor silicon update typically offering the same Flash (2MB), SRAM (384KB), and peripheral set, but may include errata fixes and slightly improved electrical characteristics. Both share the LQFP-144 footprint in their respective suffix variants.

ATSAME70Q21A-A vs STM32F407VGT6 - which is better for motor control?

For motor control, the ATSAME70Q21A-A offers Cortex-M7 + FPU at 300MHz with 384KB SRAM and Ethernet/USB integrated, while the STM32F407VGT6 is Cortex-M4F at 168MHz with 1MB Flash and 192KB SRAM. The SAME70 wins on raw DSP throughput and Ethernet/PTP support, while the STM32F407 wins on Flash density and a larger ecosystem. For FOC drives up to 50kHz PWM, the SAME70 is preferred; for cost-sensitive simple control, the STM32F407 is competitive.

Is there a same-family drop-in replacement for ATSAME70Q21A-A?

Yes. The ATSAME70N20A-AN is the closest same-family drop-in replacement: same Cortex-M7 core, same LQFP-144 footprint, same SAM E70 platform with full peripheral compatibility, but with 1MB Flash instead of 2MB (-50%). Application code is portable without changes. ATSAME70N20A-AN is listed on XAIPART as an internal-link candidate. For the same Flash density in a BGA package, the ATSAME70Q21A-CN (LFBGA-144) is a same-footprint swap requiring PCB reballing only.

What is the best cross-brand equivalent for ATSAME70Q21A-A?

The best cross-brand equivalent is the STMicroelectronics STM32F407VGT6 (Cortex-M4F at 168MHz, 1MB Flash, LQFP-100, not LQFP-144) which is functionally similar but not pin-compatible - so it is NOT a drop-in. For a true cross-brand drop-in at Cortex-M7, the Renesas R7FA2L1AB3CFP (RA2L1) is lower-performance. In practice, most engineers choose SAME70 family members rather than cross-brand swaps because no competitor offers a true pin-compatible Cortex-M7 + Ethernet + USB-HS + CAN-FD combination at this Flash density.

When should I choose ATSAME70Q21A-A over ATSAME70N20A-AN?

Choose the ATSAME70Q21A-A when your firmware exceeds 1MB of Flash or you require headroom for over-the-air (OTA) dual-image storage with A/B partitioning. The 2MB Flash allows full Linux-style bootloader + application + assets layouts. Choose the ATSAME70N20A-AN when cost per unit is critical and your application fits within 1MB - the pin-compatible ATSAME70N20A-AN (same LQFP-144 footprint) saves approximately 15-20% on unit cost at volume.

Where can I download the ATSAME70Q21A-A datasheet PDF?

The official ATSAME70Q21A-A datasheet PDF is available from Microchip's product page at https://www.microchip.com/en-us/product/ATSAME70Q21 - the SAM E70 family datasheet covers the ATSAME70Q21A-A, ATSAME70Q21A-AN, ATSAME70N20A-AN, and ATSAME70Q20A-CNT variants. The datasheet includes electrical characteristics, peripheral register maps, package drawings, and ordering information. Errata documents are published separately and should be reviewed before production sign-off.

What are the key pinout details for ATSAME70Q21A-A LQFP-144?

The ATSAME70Q21A-A LQFP-144 has 144 pins arranged on a 20x20mm body with 0.5mm pitch. Key pin assignments: VDDCORE pins (multiple, internal LDO output), VDDIO pins (1.8V/2.5V/3.3V I/O supply), VDDIOM and VDDIOP for memory and peripheral I/O segments, GND pins (multiple, requiring thermal via array on PCB), NRST (active-low reset with internal pull-up), JTAG/SWD pins (TCK, TMS, TDO, TDI, NRST) for debug, and dedicated pins for Ethernet RMII/MII, USB HS, and HSPI. The full pinout table is in the SAM E70 family datasheet.

What are the key specifications of ATSAME70Q21A-A that engineers should know?

The ATSAME70Q21A-A is a 300MHz Cortex-M7 MCU with 2MB Flash, 384KB SRAM, 32KB I-cache + 32KB D-cache, IEEE 1588 Ethernet MAC, USB 2.0 High-Speed with on-chip PHY, dual CAN-FD, AES/TRNG hardware crypto, 16-bit HSPI, camera interface, and 144-pin LQFP package. Operating voltage is 1.8V/2.5V/3.3V I/O with internal core LDO, industrial temperature range -40C to +85C, and CoreMark score approximately 1500. It is the highest-density Flash part in the SAM E70 family.

Is ATSAME70Q21A-A suitable for industrial Ethernet applications?

Yes, the ATSAME70Q21A-A is highly suitable for industrial Ethernet. It integrates a 10/100Mbps Ethernet MAC with hardware IEEE 1588 PTP timestamping, which is essential for EtherCAT, PROFINET IRT, and TSN applications requiring sub-microsecond synchronization. Combined with the 300MHz Cortex-M7 throughput and 384KB SRAM, it can run real-time industrial Ethernet slave stacks alongside application logic. For master-side applications, additional external PHYs and managed switches may be required.

Data referensi engineering untuk ATSAME70Q21A-A — pembandingan, panduan desain, dan informasi konformitas.

Panduan Pemilihan

Choose the ATSAME70Q21A-A when you need the highest Flash density (2MB) in the SAM E70 family for OTA dual-image firmware, complex protocol stacks (TLS, EtherCAT, MQTT), or large embedded HMI asset storage. Its 300MHz Cortex-M7 with FPU, hardware IEEE 1588 Ethernet, USB 2.0 High-Speed with on-chip PHY, dual CAN-FD, and hardware AES/TRNG make it ideal for industrial Ethernet nodes, motor control FOC drives, and connected IoT gateways. Choose the ATSAME70N20A-AN when 1MB Flash is sufficient and you want cost savings; the ATSAME70Q21B-AN when you need the latest silicon revision; the ATSAME70Q21A-CN (BGA) when PCB area is critical. Avoid the ATSAMS70Q21A-AN unless Ethernet is intentionally not required - SAM S70 lacks Ethernet MAC. For non-Microchip designs, no drop-in equivalent exists at this Flash + peripheral combination - the STM32F407 is functionally similar but not pin-compatible, requiring a full PCB redesign.

Pembandingan dengan Alternatif

Parameter Umum	Produk Ini	ATSAME70Q21B-AN	ATSAME70N20A-AN	ATSAME70Q21A-CN	ATSAMS70Q21A-AN	ATSAME70Q20A-CNT
Brand	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Package	144-LQFP (20x20mm)	144-LQFP (20x20mm)	144-LQFP (20x20mm)	144-LFBGA (10x6mm)	144-LQFP (20x20mm)	144-LFBGA (10x6mm)
Core	ARM Cortex-M7	ARM Cortex-M7	ARM Cortex-M7	ARM Cortex-M7	ARM Cortex-M7	ARM Cortex-M7
Max Clock Speed	300 MHz	300 MHz	300 MHz	300 MHz	300 MHz	300 MHz
Flash Memory	2 MB	2 MB	1 MB	2 MB	2 MB	1 MB
SRAM	384 KB	384 KB	384 KB	384 KB	384 KB	384 KB
Ethernet MAC	Yes (1588 PTP)	Yes (1588 PTP)	Yes (1588 PTP)	Yes (1588 PTP)	No (SAM S70 variant)	Yes (1588 PTP)
USB HS with PHY	Yes	Yes	Yes	Yes	Yes	Yes
CAN-FD Controllers	2	2	2	2	2	2

Diferensiator Kunci

Highest Flash density in SAM E70 family (vsATSAME70N20A-AN)
Full peripheral integration (Ethernet + USB-HS + CAN-FD) (vsATSAMS70Q21A-AN)
Silicon revision A baseline with documented errata (vsATSAME70Q21B-AN)
LQFP-144 package for hand-prototyping and high-power applications (vsATSAME70Q21A-CN (LFBGA-144))

Catatan Desain

Estimated: Power dissipation at 300MHz, 3.3V VDDIO, and full peripheral activity is approximately 0.5-0.8W. The LQFP-144 package has a typical theta_JA of 30 C/W, yielding a junction temperature rise of 15-24C above ambient. Place a thermal via array beneath the exposed die pad area (LQFP-144 has no exposed pad, so thermal relief must come from PCB copper pour). Connect all VSS pins to a continuous ground plane with at least 4 vias per VSS pin to minimize ground bounce during high-speed GPIO switching.

Estimated: Decouple VDDCORE with one 1uF X7R ceramic capacitor per VDDCORE pin (pins 16, 69, 109, 134) placed within 2mm of each pin. Decouple each VDDIO pin with one 100nF X7R within 3mm. Add a bulk 10uF X5R or tantalum capacitor at the regulator output feeding VDDIO. Keep the VDDCORE and VDDIO traces short and direct to the IC pins. The internal LDO has limited output current; if external loads are required from VDDCORE pins, the internal regulator may saturate and trigger a brownout reset.

Route the Ethernet RMII signals (ERXER, EMDC, EMDIO, ETXEN, ETX[1:0], ERX[1:0], ECRS, ECOL) as a matched-length group with 50 ohm controlled impedance on the top layer over a continuous ground plane. The USB 2.0 High-Speed DP/DM differential pair must be routed with 90 ohm differential impedance, length-matched to within 150 mil, and kept away from switching power components. Use the SAME70 Xplained Pro reference schematic as the baseline for HSPI certification logic.

Do not exceed 1.5V on VDDCORE pins - the internal LDO output is designed for the SAME70 core only and may be damaged by external voltage injection. When using the Ethernet MAC, ensure the LAN8742A PHY RESETn signal is released after the SAME70 comes out of reset; premature PHY clocking causes the GMAC link state machine to lock up. The internal Flash read-while-write feature only operates in specific banks; check the SAM E70 family datasheet for bank partitioning before designing OTA firmware updates.

Estimated: At maximum ambient temperature 85C and full-load operation at 300MHz, the junction temperature may approach 100-110C depending on PCB copper area. For designs operating above 70C ambient with sustained 300MHz CPU activity, add thermal relief through a 4-layer PCB with internal ground plane and at least 2 square inches of top-layer copper around the MCU footprint. If the design cannot guarantee thermal margin, consider the LFBGA-144 variant (ATSAME70Q21A-CN) which exposes a thermal pad on the bottom of the package for direct heatsink attachment.

Informasi Konformitas

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Bebas Logam Lengket

Yes

Bebas Halogena

Yes

Mineral Konflik

Compliant

Industrial-grade temperature range -40C to +85C. For automotive AEC-Q100 qualification, choose ATSAMV71Q21B variant. RoHS/REACH compliance per Microchip product declaration.

Data disahkan pada: 2026-10-07 — data disahkan dan disusun oleh tim engineering komponen XAIPART

Sumber: Distributor, Manufacturer Product Page, Distributor, Manufacturer Datasheet, Distributor, Distributor

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Komponen dan Istilah Terkait

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