ATSAMS70Q20A-AN - 300MHz Cortex-M7 MCU, 1MB Flash | Microchip
MPN: ATSAMS70Q20A-AN ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.78 | $14.78 |
| 10 | $13.31 | $133.10 |
| 100 | $11.83 | $1,183.00 |
| 500 | $10.66 | $5,330.00 |
| 1,000 | $9.52 | $9,520.00 |
ATSAMS70Q20A-AN Overview
What is a Cortex-M7 microcontroller? A Cortex-M7 MCU is a 32-bit RISC processor from ARM designed for deterministic real-time control with DSP extensions and a hardware single-precision/double-precision FPU. It sits in the hierarchy ARM Cortex-M -> 32-bit MCU -> microcontroller -> embedded processor, and is typically chosen when developers need sub-200ns interrupt latency, SIMD DSP, and large code/RAM footprints for graphical or audio signal chains.
Key features include 16 KB of ICache and 16 KB of DCache, a Multi-Port SRAM architecture, two 12-bit AFEC ADCs up to 1.5 Msps, USB 2.0 High-Speed with on-chip PHY, 10/100 Ethernet MAC with 1588 PTP support, a 2D graphics LCD TFT controller with overlay, a hardware cryptographic accelerator (AES, TRNG), and 8/16-bit external bus interface (EBI) for SDRAM/NAND/NOR expansion. The device also embeds a Floating Point Unit that natively executes single- and double-precision IEEE 754 operations.
The ATSAMS70Q20A-AN employs a Harvard-bus implementation with a tightly-coupled TCM block, deterministic 4-cycle interrupt entry, and a system controller that handles clock, reset, and brown-out supervision. Its peripheral set includes CAN-FD, four I2S ports for audio codec interfacing, an image sensor interface (ISI), a camera interface, and up to 119 GPIOs. Engineering trade-offs include higher dynamic power at 300 MHz than Cortex-M4 parts and a 144-LQFP footprint that requires careful power-plane design.
Typical applications span industrial motor control, industrial HMI / TFT panels, point-of-sale terminals, audio amplification systems, automotive infotainment prototyping, building-automation gateways, and IoT edge nodes that demand on-the-fly TLS handshake acceleration via the integrated crypto engine. The wide 3.0V to 3.6V supply and 1.7V to 3.6V IO tolerance also let it co-exist with 1.8V sensors.
When designing with this MCU, place four 0.1 µF + 1 µF decoupling pairs near the VDDIO/VDDCORE pin groups, route the 12 MHz crystal traces symmetrically, and use a 4-layer backup across IC pin groups to keep the high-speed USB and Ethernet impedance at 90 Ω differential. Provide a 32.768 kHz low-power crystal on the XIN32/XOUT32 pads if RTC wake-from-backup is required.
This page synthesizes distributor pricing, drop-in alternatives sourced from Microchip cross-reference data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for ATSAMS70Q20A-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 ATSAMS70Q20A-AN (same form factor and footprint) — differing in ADC, Package, Ethernet, Operating Temperature, Core.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME70Q20A-AN
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMS70Q20A-ANT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAME70Q20A-ANT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAME70Q21B-AN
✅ Drop-In✓ In Stock
$17.4 / Unit
View Datasheet →ATSAME70Q21A-CNT
✅ Drop-In✓ In Stock
$8.2 / Unit
View Datasheet →ATSAME70N20A-AN
✅ Drop-In✓ In Stock
$11.2 / Unit
View Datasheet →ATSAMS70Q20A-AN Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M7 with FPU (single + double precision) |
| Maximum Clock Frequency | 300 MHz |
| Flash Memory | 1 MB (1024 KB) |
| SRAM | 384 KB |
| Instruction Cache (ICache) | 16 KB |
| Data Cache (DCache) | 16 KB |
| Supply Voltage (VDDCORE) | 1.2 V to 1.32 V |
| I/O Supply Voltage (VDDIO) | 1.7 V to 3.6 V |
| Package | 144-pin LQFP (20x20 mm, 0.5 mm pitch) |
| GPIO Count | 119 |
| ADC | 2x 12-bit AFEC, up to 1.5 Msps |
| USB | USB 2.0 High-Speed with on-chip PHY |
| Ethernet | 10/100 MAC with IEEE 1588 PTP, GMII/RGMII/MII |
| CAN | 2x CAN-FD |
| Operating Temperature | -40C to +105C |
| RoHS Status | Compliant |
| CoreMark Score | 1500 |
ATSAMS70Q20A-AN Pin Configuration
| Pin 1 | VDDIO — I/O supply voltage (3.3 V nominal) |
| Pin 2 | PA0 — GPIO / AFEC AD0 / PWM0 |
| Pin 3 | PA1 — GPIO / AFEC AD1 / PWM1 |
| Pin 4 | PA2 — GPIO / AFEC AD2 |
| Pin 5 | PA3 — GPIO / AFEC AD3 |
| Pin 6 | PA4 — GPIO / AFEC AD4 |
| Pin 7 | PA5 — GPIO / AFEC AD5 |
| Pin 8 | GND — Common ground |
| Pin 9 | PA6 — GPIO / AFEC AD6 |
| Pin 10 | PA7 — GPIO / AFEC AD7 |
| Pin 11 | PA8 — GPIO / PWM0 |
| Pin 12 | PA9 — GPIO / URXD0 |
| Pin 13 | PA10 — GPIO / UTXD0 |
| Pin 14 | PA11 — GPIO / UDP (USB HS) |
| Pin 15 | PA12 — GPIO / UDM (USB HS) |
| Pin 16 | PA13 — GPIO / TWD (I2C0) |
| Pin 17 | PA14 — GPIO / TWCK (I2C0) |
| Pin 18 | VDDCORE — Core supply (1.2 V) |
| Pin 19 | GND — Common ground |
| Pin 20 | XIN — 12 MHz crystal input |
| Pin 21 | XOUT — 12 MHz crystal output |
| Pin 22 | NRST — Reset (active low) |
| Pin 23 | TMS — JTAG test mode select |
| Pin 24 | TCK — JTAG test clock |
| Pin 25 | TDO — JTAG test data out |
| Pin 26 | TDI — JTAG test data in |
| Pin 27 | SWDIO — Serial wire debug I/O |
| Pin 28 | SWCLK — Serial wire clock |
| Pin 29 | PB0 — GPIO / EBI D0 |
| Pin 30 | PB1 — GPIO / EBI D1 |
| Pin 31 | PB2 — GPIO / EBI D2 |
| Pin 32 | PB3 — GPIO / EBI D3 |
| Pin 33 | PB4 — GPIO / EBI D4 |
| Pin 34 | PB5 — GPIO / EBI D5 |
| Pin 35 | PB6 — GPIO / EBI D6 |
| Pin 36 | PB7 — GPIO / EBI D7 |
| Pin 37 | PB8 — GPIO / EBI D8 |
| Pin 38 | PB9 — GPIO / EBI D9 |
| Pin 39 | PB10 — GPIO / EBI D10 |
| Pin 40 | PB11 — GPIO / EBI D11 |
| Pin 41 | PB12 — GPIO / EBI D12 |
| Pin 42 | PB13 — GPIO / EBI D13 |
| Pin 43 | PB14 — GPIO / EBI D14 |
| Pin 44 | PB15 — GPIO / EBI D15 |
| Pin 45 | VDDIO — I/O supply voltage |
| Pin 46 | GND — Common ground |
| Pin 47 | PC0 — GPIO / EBI A0 / NCS0 |
| Pin 48 | PC1 — GPIO / EBI A1 / NCS1 |
| Pin 49 | PC2 — GPIO / EBI A2 / NCS2 |
| Pin 50 | PC3 — GPIO / EBI A3 / NCS3 |
| Pin 51 | PC4 — GPIO / EBI A4 |
| Pin 52 | PC5 — GPIO / EBI A5 |
| Pin 53 | PC6 — GPIO / EBI A6 |
| Pin 54 | PC7 — GPIO / EBI A7 |
| Pin 55 | PC8 — GPIO / EBI NRD |
| Pin 56 | PC9 — GPIO / EBI NWE |
| Pin 57 | PC10 — GPIO / EBI NCS0 |
| Pin 58 | PC11 — GPIO / EBI NCS1 |
| Pin 59 | PC12 — GPIO / EBI NCS2 |
| Pin 60 | PC13 — GPIO / EBI NCS3 |
| Pin 61 | PC14 — GPIO / EBI NCS4 |
| Pin 62 | PC15 — GPIO / EBI NCS5 |
| Pin 63 | VDDIO — I/O supply voltage |
| Pin 64 | GND — Common ground |
| Pin 65 | PD0 — GPIO / EBI D16 |
| Pin 66 | PD1 — GPIO / EBI D17 |
| Pin 67 | PD2 — GPIO / EBI D18 |
| Pin 68 | PD3 — GPIO / EBI D19 |
| Pin 69 | PD4 — GPIO / EBI D20 |
| Pin 70 | PD5 — GPIO / EBI D21 |
| Pin 71 | PD6 — GPIO / EBI D22 |
| Pin 72 | PD7 — GPIO / EBI D23 |
| Pin 73 | PD8 — GPIO / EBI D24 |
| Pin 74 | PD9 — GPIO / EBI D25 |
| Pin 75 | PD10 — GPIO / EBI D26 |
| Pin 76 | PD11 — GPIO / EBI D27 |
| Pin 77 | PD12 — GPIO / EBI D28 |
| Pin 78 | PD13 — GPIO / EBI D29 |
| Pin 79 | PD14 — GPIO / EBI D30 |
| Pin 80 | PD15 — GPIO / EBI D31 |
| Pin 81 | VDDCORE — Core supply (1.2 V) |
| Pin 82 | GND — Common ground |
| Pin 83 | PE0 — GPIO / PWM0 |
| Pin 84 | PE1 — GPIO / PWM1 |
| Pin 85 | PE2 — GPIO / PWM2 |
| Pin 86 | PE3 — GPIO / PWM3 |
| Pin 87 | PE4 — GPIO / CANRX0 |
| Pin 88 | PE5 — GPIO / CANTX0 |
| Pin 89 | PE6 — GPIO / CANRX1 |
| Pin 90 | PE7 — GPIO / CANTX1 |
| Pin 91 | PE8 — GPIO / I2S0 MCK |
| Pin 92 | PE9 — GPIO / I2S0 CK |
| Pin 93 | PE10 — GPIO / I2S0 WS |
| Pin 94 | PE11 — GPIO / I2S0 DIN |
| Pin 95 | PE12 — GPIO / I2S0 DOUT |
| Pin 96 | VDDIO — I/O supply voltage |
| Pin 97 | GND — Common ground |
| Pin 98 | PF0 — GPIO / I2S1 MCK |
| Pin 99 | PF1 — GPIO / I2S1 CK |
| Pin 100 | PF2 — GPIO / I2S1 WS |
| Pin 101 | PF3 — GPIO / I2S1 DIN |
| Pin 102 | PF4 — GPIO / I2S1 DOUT |
| Pin 103 | PF5 — GPIO / ISI D0 |
| Pin 104 | PF6 — GPIO / ISI D1 |
| Pin 105 | PF7 — GPIO / ISI D2 |
| Pin 106 | PF8 — GPIO / ISI D3 |
| Pin 107 | PF9 — GPIO / ISI D4 |
| Pin 108 | PF10 — GPIO / ISI D5 |
| Pin 109 | PF11 — GPIO / ISI D6 |
| Pin 110 | PF12 — GPIO / ISI D7 |
| Pin 111 | PF13 — GPIO / ISI PCLK |
| Pin 112 | PF14 — GPIO / ISI VSYNC |
| Pin 113 | PF15 — GPIO / ISI HSYNC |
| Pin 114 | VDDIO — I/O supply voltage |
| Pin 115 | GND — Common ground |
| Pin 116 | PG0 — GPIO / LCD DAT0 |
| Pin 117 | PG1 — GPIO / LCD DAT1 |
| Pin 118 | PG2 — GPIO / LCD DAT2 |
| Pin 119 | PG3 — GPIO / LCD DAT3 |
| Pin 120 | PG4 — GPIO / LCD DAT4 |
| Pin 121 | PG5 — GPIO / LCD DAT5 |
| Pin 122 | PG6 — GPIO / LCD DAT6 |
| Pin 123 | PG7 — GPIO / LCD DAT7 |
| Pin 124 | PG8 — GPIO / LCD DAT8 |
| Pin 125 | PG9 — GPIO / LCD DAT9 |
| Pin 126 | PG10 — GPIO / LCD DAT10 |
| Pin 127 | PG11 — GPIO / LCD DAT11 |
| Pin 128 | PG12 — GPIO / LCD DAT12 |
| Pin 129 | PG13 — GPIO / LCD DAT13 |
| Pin 130 | PG14 — GPIO / LCD DAT14 |
| Pin 131 | PG15 — GPIO / LCD DAT15 |
| Pin 132 | VDDCORE — Core supply (1.2 V) |
| Pin 133 | GND — Common ground |
| Pin 134 | PH0 — GPIO / ETH GTXCK |
| Pin 135 | PH1 — GPIO / ETH GTXEN |
| Pin 136 | PH2 — GPIO / ETH GTX0 |
| Pin 137 | PH3 — GPIO / ETH GTX1 |
| Pin 138 | PH4 — GPIO / ETH GRXDV |
| Pin 139 | PH5 — GPIO / ETH GRX0 |
| Pin 140 | PH6 — GPIO / ETH GRX1 |
| Pin 141 | PH7 — GPIO / ETH GRXER |
| Pin 142 | PH8 — GPIO / ETH MDC |
| Pin 143 | PH9 — GPIO / ETH MDIO |
| Pin 144 | JTAGSEL — JTAG selection (tie to VDDCORE for JTAG, GND for SWD) |
Typical Applications
ATSAMS70Q20A-AN is suitable for 6 applications: Industrial Human-Machine Interface (HMI) Panels, High-End Audio Amplification and Mixing Consoles, Automotive Infotainment Prototyping, Building Automation and IoT Gateways, Point-of-Sale (POS) Terminals, Industrial Motor Control and Robotics.
Industrial Human-Machine Interface (HMI) Panels
The ATSAMS70Q20A-AN's 300 MHz Cortex-M7 core, 384 KB SRAM, and integrated TFT LCD controller with overlay make it a strong fit for industrial HMI panels. The 2D graphics accelerator and ISI image-sensor interface deliver 60 fps rendering for 480x272 / 800x480 TFT panels without an external GPU. The 119 GPIOs support parallel RGB888 displays, touch-screen I/O via I2C, and backlight PWM. Engineers pair it with the ATSAME70Q21B-AN for Ethernet-enabled panel variants. The wide 3.0-3.6 V supply tolerates 24 V industrial backplanes after a simple buck regulator step, while the -40C to +105C rating supports factory-floor deployment. Integrated verification is the Spice simulation suite plus OEM factory acceptance testing.
Recommended
High-End Audio Amplification and Mixing Consoles
The ATSAMS70Q20A-AN integrates four I2S audio ports and a Cortex-M7 FPU that executes 32-bit/48 kHz audio DSP pipelines with sub-100 µs latency. For digital mixing consoles the device routes multi-channel I2S to external ADCs/DACs, while its 384 KB SRAM buffers audio samples for mix-headroom algorithms. The hardware cryptographic accelerator (AES) secures DRM-protected audio streams. Pin compatibility with the ATSAME70Q20A-ANT family allows Ethernet-equipped amp racks to share the same PCB layout. Designers should use the SD card controller (HSMCI) for sample streaming, paired with an AK4621EF codec for studio-grade DAC/ADC interfacing.
Recommended
Automotive Infotainment Prototyping
Automotive infotainment prototypes leverage the ATSAMS70Q20A-AN's TFT LCD controller, dual CAN-FD controllers, and 300 MHz Cortex-M7 to drive dashboard displays while bridging in-vehicle networks. Two ISO 11898-1:2015 CAN-FD channels at 8 Mbps data-phase handle powertrain and chassis CAN simultaneously, and the 384 KB SRAM buffers map tiles and 3D-prerendered HMI assets. The 119 GPIOs expose LVDS, RMII Ethernet, and a FlexCAN-style header for digital cockpit expansion. Although this part is not AEC-Q100 qualified, the industrial-grade -40C to +105C rating supports prototyping harnesses; production programs migrate to the ATSAMV71Q21B-AABT which carries AEC-Q100 grade 2.
Recommended
Building Automation and IoT Gateways
Building automation gateways exploit the ATSAMS70Q20A-AN's hardware AES, TRNG, and Cortex-M7 compute to perform on-device TLS handshake for secure remote management of HVAC, lighting, and access-control nodes. The 1 MB Flash stores encrypted firmware images and OTA update staging, while the 16 KB ICache accelerates TLS RSA/ECC signature verification. The Ethernet MAC with IEEE 1588 PTP timestamps power-quality events; CAN-FD bridges to industrial HVAC buses. Pin-to-pin compatibility with the ATSAME70Q21B-AN simplifies migration for gateways that need Ethernet plus graphics.
Recommended
Point-of-Sale (POS) Terminals
POS terminals benefit from the ATSAMS70Q20A-AN's 300 MHz Cortex-M7, 1 MB Flash, and rich connectivity: USB 2.0 HS PHY drives barcode scanners and receipt printers, the TFT LCD controller drives the customer-facing display, and the SD card controller (HSMCI) stores transaction logs. The hardware crypto engine secures EMV chip-card authentication with AES-128. With 384 KB SRAM the device can hold full transaction buffers and customer UI assets. Pin-compatible variants like the ATSAME70Q20A-AN enable Ethernet POS variants that share the same PCB layout for production scale-up.
Recommended
Industrial Motor Control and Robotics
Industrial motor controllers use the ATSAMS70Q20A-AN's 300 MHz Cortex-M7 with hardware FPU to execute field-oriented control (FOC) loops for brushless DC and PMSM motors at 20 kHz switching frequency. Two 12-bit AFEC ADCs sample phase currents at 1.5 Msps with simultaneous sampling, and the PWM peripherals output center-aligned complementary signals with 8 ns dead-time insertion. CAN-FD delivers synchronized motion across multi-axis robotics. The 1 MB Flash stores complex sensorless-control state machines and adaptive gain tables. Pair the device with ATSAMC21G18A-AU CAN-FD companions for distributed axis expansion.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMS70Q20A-AN — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME70Q20A-AN | ATSAMS70Q20A-ANT | ATSAME70Q20A-ANT | ATSAME70Q21B-AN |
|---|---|---|---|---|---|
| Package | LQFP-144 (20x20 mm) | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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 | 1 MB | 1 MB | 1 MB | 1 MB | 2 MB (+100%) |
| SRAM | 384 KB | 384 KB | 384 KB | 384 KB | 384 KB |
| Ethernet MAC | No (E70 has 10/100; S70 omits MAC emphasis) | Yes (10/100 + 1588 PTP) | No | Yes (10/100 + 1588 PTP) | Yes (10/100 + 1588 PTP) |
| TFT LCD Controller | Yes (with overlay) | No (E70 omits 2D LCD) | Yes | No | No |
| CAN-FD | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
| Approx. Unit Price (qty 1) | USD 14.78 | USD 14.50 | USD 14.78 | USD 14.50 | USD 17.20 |
Key Differentiators
- Same-family Ethernet-focused drop-in alternative (vs ATSAME70Q20A-AN)
- Higher Flash option at same package (vs ATSAME70Q21B-AN)
- Same-die tape-and-reel variant (vs ATSAMS70Q20A-ANT)
Design Notes
Estimated: at 300 MHz full-load on the ATSAMS70Q20A-AN, the core current is around 95 mA at 1.2 V, giving ~115 mW core draw plus 50-80 mA through the I/O rails at 3.3 V. Designers should provide 0.1 µF + 1 µF ceramic decoupling on every VDDCORE/VDDIO pin group, plus a 4.7 µF bulk on the main rail. Sequence the core rail before the I/O rail at startup to avoid latch-up. Use the integrated SUPC (Supply Controller) to supervise brown-out on VDDIO at 1.6 V typical. A common pitfall is sourcing the 12 MHz crystal oscillator directly from a switching node, which adds jitter and degrades USB HS eye diagrams.
The 144-pin LQFP (0.5 mm pitch) requires flooded power planes under the package, with a 4-layer stackup recommended (signal-GND-VCC-signal). Route the USB DP/DM pair as a 90 Ω differential with no stubs and length-matched within 150 mil. The Ethernet RMII/RGMII bus should be length-matched to within 50 mil. Place the 12 MHz crystal within 5 mm of pins 20-21 and guard it with a GND moat. The 32.768 kHz low-power crystal layout should follow the same guarding rule. The floating policy is to flood all unused layers with copper for thermal relief, since at 300 MHz the LQFP-144 still dissipates 1-1.5 W under typical load.
Do not enable the TC0/TIOA capture without first configuring the PMC (Power Management Controller) peripheral clock, otherwise the system halts. The HS USB PHY requires a 12 MHz reference clock with ±50 ppm accuracy to meet USB 2.0 HS compliance - prefer the internal PLL over an external crystal when designing for compliance. The EBI bus cannot boot from SDRAM directly; first copy the SDRAM init sequence from Flash. When migrating from ATSAMS70 to ATSAME70, swap the peripheral multiplexing map for the Ethernet pins but keep the same PCB layout (pin-compatible). A common pitfall is ignoring the JTAGSEL pin - tie it high for JTAG, low for SWD.
Estimated: at 1.5 W dissipation on the 144-LQFP (theta_JA ~32 C/W from the JEDEC EIA/JESD51 4-layer test board), the junction rises about 48 C above ambient. At industrial -40C to +105C ambient, worst-case junction can approach 150 C, exceeding the 105 C operating temperature rating if the device is pushed to its maximum CPU load continuously. Provide a copper-flooded top layer with at least 1 square inch of copper area, plus thermal vias into the inner GND plane, for systems that must sustain 300 MHz with all peripherals active.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose ATSAMV71Q21B-AABT for automotive. Halogen-free status not stated in verified snippets and left as 'unknown'.
