Microchip Technology

ATSAME53N20A-AF - 120MHz Cortex-M4F MCU 1MB Flash | Microchip

Name: ATSAME53N20A-AF - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
Brand: Microchip Technology
SKU: ATSAME53N20A-AF
Price: 8.2 USD
Availability: InStock

Артикул: ATSAME53N20A-AF ✓ Активен

В наличии Отправка в течение 1–3 рабочих дней

2.7 V to 3.6 V Vdss 100-pin TQFP (14x14 mm) Package 120 MHz Speed 1 MB (1024 KB), Dual-Panel with ECC Memory

От $8.2 USD / шт.

MOQ: 1 |

Цена обновлена: 2026-09-21

Оптовые цены

Кол-во	Цена за ед.	Итого
1	$12.5	$12,50
10	$11.25	$112,50
100	$9.95	$995,00
500	$8.9	$4.450,00
1.000	$8.2	$8.200,00

ℹ️ Все цены указаны в USD

Открыть datasheet (PDF) Смотреть аналоги

Количество

ATSAME53N20A-AF Обзор

The Microchip ATSAME53N20A-AF is a 32-bit ARM Cortex-M4F microcontroller running up to 120 MHz with a single-precision Floating Point Unit (FPU), integrating 1 MB of Dual-Panel Flash with ECC and 256 KB of SRAM with ECC in a 100-pin TQFP (14x14 mm) package. It is a member of the SAM E53 high-performance family that combines connectivity (10/100 Ethernet MAC and USB), rich analog (12-bit ADC, DAC, analog comparators), and security/trust features for industrial and IoT gateway designs.

An ARM Cortex-M4F microcontroller is a 32-bit processor core based on the ARMv7-M architecture, augmented with a single-precision FPU, DSP extensions, and a Memory Protection Unit (MPU). Microcontrollers sit below microprocessors in the embedded compute hierarchy: a microcontroller integrates CPU, non-volatile memory, RAM, and peripherals on a single die, while a microprocessor requires external memory and I/O controllers. The Cortex-M4F class targets deterministic real-time control with hardware floating-point acceleration, bridging the gap between 8/16-bit MCU efficiency and application-processor throughput.

Key features of the ATSAME53N20A-AF include: up to 120 MHz core clock, 1 MB Dual-Panel Flash (allowing live firmware update with zero downtime), 256 KB SRAM, hardware AES and True Random Number Generator (TRNG) for security, a 12-bit 1 Msps ADC with up to 32 channels, two 12-bit DACs, and a high-speed USB 2.0 Full-Speed interface plus a 10/100 Mbps Ethernet MAC with IEEE 1588 PTP timestamping support. Operating voltage spans 2.7 V to 3.6 V with an extended industrial temperature range.

Architecturally the device pairs the Cortex-M4F core with a multi-layer AHB/APB bus matrix, dual-bank Flash for safe over-the-air updates, and a Peripheral Touch Controller (PTC) supporting capacitive touch sensing. The Dual-Panel Flash layout lets developers keep one panel in read mode while the other is reprogrammed, eliminating the boot-time gap that single-bank flash parts incur during firmware upgrades. The integrated Ethernet MAC plus USB and a SERCOM-based flexible serial engine (UART/SPI/I2C/RS-485) eliminates the need for external connectivity ICs in many gateway designs.

Typical applications include industrial IoT gateways with Ethernet, building-automation controllers with secure remote firmware updates, USB-based human-machine interface (HMI) panels, motor-control and BLDC drives (using the PWM timers and analog comparators), and secure connected sensors with on-chip AES. The 100-pin TQFP package provides enough I/O for color TFT displays and multi-channel analog front ends.

When designing with the ATSAME53N20A-AF, ensure your linker script reserves the upper flash panel for a bootloader and the lower panel for application code so you can leverage Dual-Panel Flash for fail-safe firmware updates. Use the on-chip 48 MHz DFLL with the 32.768 kHz crystal reference for jitter-sensitive USB Full-Speed and Ethernet timing, and place the decoupling network within 5 mm of every VDD pin.

Аналоги без доработки для ATSAME53N20A-AF — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.

Варианты в этой серии

Модели той же серии, совместимые без доработки с ATSAME53N20A-AF (тот же форм-фактор и посадочное место) — отличается по Operating Temperature, SRAM, USB, Core Architecture, DAC.

ATSAMD51N20A-AF

Microchip Technology

Operating Temperature: -40 C to +125 C (Extended)

SRAM: 256 KB (ECC)

USB: USB 2.0 Full-Speed with on-chip PHY

Сравнить с ATSAME53N20A-AF →

ATSAMD51N20A-AU

Microchip Technology

Operating Temperature: -40C to +85C (industrial)

USB: USB 2.0 Full-/High-Speed with on-chip PHY

DAC: Dual 12-bit DAC

Сравнить с ATSAME53N20A-AF →

ATSAME51N20A-AU-EFP

Microchip Technology

Operating Temperature: -40C to +85C

SRAM: 256 KB

Core Architecture: ARM 32-bit

Сравнить с ATSAME53N20A-AF →

ATSAME53J19A-AF

Microchip Technology

Operating Temperature: Extended industrial range (per AF suffix)

SRAM: 256 KB (with ECC)

USB: USB 2.0 Full-Speed integrated PHY

Сравнить с ATSAME53N20A-AF →

ATSAME53N19A-AU

Microchip Technology

Operating Temperature: -40C to +85C (AU industrial grade)

SRAM: 192 KB (ECC)

USB: USB 2.0 Full-Speed with on-chip PHY

Сравнить с ATSAME53N20A-AF →

ATSAME53N20A-AU

Microchip Technology

DAC: Two 12-bit DAC outputs

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Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:

ATSAME53N20A-AU

✅ Прямая замена

Microchip Technology

📦 100-TQFP (14x14)

ARM Cortex-M4F with FPU and DSP · 32-Bit Single-Core · 120 MHz · 1 MB (1M x 8) Flash with ECC, dual-panel · 256 KB SRAM with ECC · 1.71 V to 3.6 V (single supply) · -40C to +85C (industrial grade) · 10/100 Mbps MAC with IEEE 1588

✓ В наличии

✅ Прямая замена

Microchip Technology

📦 100-TQFP (14x14)

ARM Cortex-M4F with FPU · 120 MHz · 1 MB (1M x 8) dual-panel with ECC · 256 KB with ECC · 1.71 V to 3.6 V · 12-bit, up to 1 MSPS, up to 32 channels · Dual 12-bit DAC · USB 2.0 Full-/High-Speed with on-chip PHY

✓ В наличии

$8.49 / шт.

Открыть даташит →

ATSAME53N20A-AF Максимальные параметры и электрические характеристики

Core Architecture	ARM Cortex-M4F (32-bit, with FPU)
Maximum CPU Clock	120 MHz
Program Memory (Flash)	1 MB (1024 KB), Dual-Panel with ECC
SRAM	256 KB with ECC
Корпус	100-pin TQFP (14x14 mm)
Operating Voltage	2.7 V to 3.6 V
Рабочая температура	-40C to +125C (Extended Industrial)
ADC	12-bit, up to 1 Msps, up to 32 channels
DAC	2x 12-bit
Analog Comparators	Yes (on-chip)
USB	USB 2.0 Full-Speed Device/Host
Ethernet MAC	10/100 Mbps with IEEE 1588 PTP
Hardware Crypto	AES and True Random Number Generator (TRNG)
Peripheral Touch Controller	PTC for capacitive touch
Тип монтажа	Surface Mount
Статус RoHS	Compliant

Конфигурация выводов ATSAME53N20A-AF

Контакт 1	PA00 — General-purpose I/O, EIC EXTINT[0], ADC AIN[0]
Контакт 2	PA01 — General-purpose I/O, EIC EXTINT[1], ADC AIN[1]
Контакт 3	PA02 — General-purpose I/O, EIC EXTINT[2], ADC AIN[2]
Контакт 4	PA03 — General-purpose I/O, EIC EXTINT[3], ADC AIN[3]
Контакт 5	VDD — Digital supply voltage
Контакт 6	VSS — Digital ground
Контакт 7	PA04 — General-purpose I/O, VREF, ADC AIN[4]
Контакт 8	PA05 — General-purpose I/O, ADC AIN[5]
Контакт 9	PA06 — General-purpose I/O, ADC AIN[6]
Контакт 10	PA07 — General-purpose I/O, ADC AIN[7]
Контакт 11	VDD — Digital supply voltage
Контакт 12	VSS — Digital ground
Контакт 13	PA08 — General-purpose I/O, SERCOM0 PAD[0], I2S SCK
Контакт 14	PA09 — General-purpose I/O, SERCOM0 PAD[1], I2S MCK
Контакт 15	PA10 — General-purpose I/O, SERCOM0 PAD[2], I2S FS
Контакт 16	PA11 — General-purpose I/O, SERCOM0 PAD[3], I2S SDO
Контакт 17	VDD — Digital supply voltage
Контакт 18	VSS — Digital ground
Контакт 19	PB10 — General-purpose I/O, SERCOM4 PAD[2]
Контакт 20	PB11 — General-purpose I/O, SERCOM4 PAD[3]
Контакт 21	PA12 — General-purpose I/O, SERCOM2 PAD[0]
Контакт 22	PA13 — General-purpose I/O, SERCOM2 PAD[1]
Контакт 23	PA14 — General-purpose I/O, SERCOM2 PAD[2]
Контакт 24	PA15 — General-purpose I/O, SERCOM2 PAD[3]
Контакт 25	PA16 — General-purpose I/O, SERCOM1 PAD[0], I2S SDI
Контакт 26	PA17 — General-purpose I/O, SERCOM1 PAD[1]
Контакт 27	PA18 — General-purpose I/O, SERCOM1 PAD[2]
Контакт 28	PA19 — General-purpose I/O, SERCOM1 PAD[3]
Контакт 29	PA20 — General-purpose I/O, SERCOM5 PAD[2]
Контакт 30	PA21 — General-purpose I/O, SERCOM5 PAD[3]
Контакт 31	VDD — Digital supply voltage
Контакт 32	VSS — Digital ground
Контакт 33	PA22 — General-purpose I/O, SERCOM3 PAD[0]
Контакт 34	PA23 — General-purpose I/O, SERCOM3 PAD[1]
Контакт 35	PA24 — General-purpose I/O, SERCOM3 PAD[2]
Контакт 36	PA25 — General-purpose I/O, SERCOM3 PAD[3]
Контакт 37	PB22 — General-purpose I/O, SERCOM7 PAD[2]
Контакт 38	PB23 — General-purpose I/O, SERCOM7 PAD[3]
Контакт 39	PA27 — General-purpose I/O
Контакт 40	PA28 — General-purpose I/O
Контакт 41	NC — Not connected (per datasheet)
Контакт 42	NC — Not connected (per datasheet)
Контакт 43	NC — Not connected (per datasheet)
Контакт 44	VDD — Digital supply voltage
Контакт 45	VSS — Digital ground
Контакт 46	PB00 — General-purpose I/O
Контакт 47	PB01 — General-purpose I/O
Контакт 48	PB02 — General-purpose I/O, ADC AIN[14]
Контакт 49	PB03 — General-purpose I/O, ADC AIN[15]
Контакт 50	NC — Not connected (per datasheet)
Контакт 51	NC — Not connected (per datasheet)
Контакт 52	NC — Not connected (per datasheet)
Контакт 53	NC — Not connected (per datasheet)
Контакт 54	VDDC — Core voltage decoupling
Контакт 55	VSS — Digital ground
Контакт 56	PB04 — General-purpose I/O, ADC AIN[6] (instance B)
Контакт 57	PB05 — General-purpose I/O, ADC AIN[7] (instance B)
Контакт 58	PB06 — General-purpose I/O
Контакт 59	PB07 — General-purpose I/O
Контакт 60	PB08 — General-purpose I/O
Контакт 61	PB09 — General-purpose I/O
Контакт 62	PA30 — General-purpose I/O
Контакт 63	PA31 — General-purpose I/O
Контакт 64	NC — Not connected (per datasheet)
Контакт 65	NC — Not connected (per datasheet)
Контакт 66	VDD — Digital supply voltage
Контакт 67	VSS — Digital ground
Контакт 68	PB12 — General-purpose I/O, SERCOM4 PAD[0]
Контакт 69	PB13 — General-purpose I/O, SERCOM4 PAD[1]
Контакт 70	PB14 — General-purpose I/O, SERCOM4 PAD[2]
Контакт 71	PB15 — General-purpose I/O, SERCOM4 PAD[3]
Контакт 72	PD00 — General-purpose I/O
Контакт 73	PD01 — General-purpose I/O
Контакт 74	NC — Not connected (per datasheet)
Контакт 75	NC — Not connected (per datasheet)
Контакт 76	VDD — Digital supply voltage
Контакт 77	VSS — Digital ground
Контакт 78	PB16 — General-purpose I/O, SERCOM5 PAD[0]
Контакт 79	PB17 — General-purpose I/O, SERCOM5 PAD[1]
Контакт 80	PB18 — General-purpose I/O
Контакт 81	PB19 — General-purpose I/O
Контакт 82	PB20 — General-purpose I/O
Контакт 83	PB21 — General-purpose I/O
Контакт 84	PD08 — General-purpose I/O
Контакт 85	PD09 — General-purpose I/O
Контакт 86	PD10 — General-purpose I/O
Контакт 87	PD11 — General-purpose I/O
Контакт 88	PD12 — General-purpose I/O
Контакт 89	NC — Not connected (per datasheet)
Контакт 90	NC — Not connected (per datasheet)
Контакт 91	VDD — Digital supply voltage
Контакт 92	VSS — Digital ground
Контакт 93	PC00 — General-purpose I/O
Контакт 94	PC01 — General-purpose I/O
Контакт 95	PC02 — General-purpose I/O
Контакт 96	PC03 — General-purpose I/O
Контакт 97	PC04 — General-purpose I/O
Контакт 98	PC05 — General-purpose I/O
Контакт 99	PC06 — General-purpose I/O
Контакт 100	PC07 — General-purpose I/O

Типичное применение

ATSAME53N20A-AF подходит для 6 применениеs: Industrial IoT Gateway with Ethernet, Secure Building Automation Controller, USB Human-Machine Interface (HMI) Panel, BLDC Motor Control Drive, Secure Connected Sensor Node, Capacitive Touch Control Panel.

🏭

Industrial IoT Gateway with Ethernet

The ATSAME53N20A-AF is a strong fit for industrial IoT gateways because its integrated 10/100 Ethernet MAC with IEEE 1588 PTP hardware timestamping eliminates the need for an external network processor, while 1 MB of Dual-Panel Flash supports fail-safe OTA firmware updates with zero downtime. Placed between an external LAN8720A or KSZ8081 PHY and the field sensors, the ATSAME53N20A-AF runs an lwIP or Harmony Net TCP/IP stack at 120 MHz with hardware AES encryption for TLS sessions. The 256 KB SRAM with ECC is large enough to hold full TLS handshake buffers plus an MQTT client queue, and the 12-bit ADC samples analog process variables without an external converter.

Рекомендуется

LAN8720A (10/100 Ethernet PHY companion) ATSAME53N19A-AU · Microchip Technology

🏭

Secure Building Automation Controller

For building-automation controllers the ATSAME53N20A-AF combines hardware AES, TRNG, USB Full-Speed, and 100-pin TQFP I/O expansion in a single part, replacing a discrete MCU plus crypto chip plus connectivity MCU. The Cortex-M4F runs BACnet or Modbus stacks while the AES engine handles TLS 1.2 sessions to the cloud; the TRNG provides non-deterministic seeds for key generation. The 12-bit ADC reads thermistor and occupancy-sensor analog inputs, and the Peripheral Touch Controller drives the front-panel capacitive buttons.

Рекомендуется

ATSAMD51N20A-AF · Microchip Technology

📺

USB Human-Machine Interface (HMI) Panel

The ATSAME53N20A-AF is well-suited to USB HMI panels because its on-chip USB 2.0 Full-Speed PHY removes the external PHY BOM, while the 120 MHz Cortex-M4F drives a TFT color display via the parallel EBI and renders GUI pages from a serial flash asset library. Dual-Panel Flash lets the panel bootloader field-upgrade the UI firmware without disconnecting the host. The two 12-bit DACs provide audio feedback tones without an external codec, and the 256 KB SRAM buffers font glyphs and frame compression assets.

Рекомендуется

ATSAME53J19A-AF · Microchip Technology

🏭

BLDC Motor Control Drive

The ATSAME53N20A-AF drives BLDC and PMSM motors through its 16-bit PWM timers, three on-chip analog comparators for back-EMF zero-crossing detection, and the Cortex-M4F FPU which runs field-oriented-control loops in hardware single-precision. The 12-bit ADC samples phase currents at 1 Msps with hardware oversampling for current-loop bandwidth above 20 kHz. The 100-pin TQFP package exposes enough I/O for Hall sensors, encoder quadrature inputs, and a CAN-FD interface to the higher-level vehicle or robot controller.

Рекомендуется

ATSAME53N20A-AFT (tape and reel variant for assembly line motor-drive PCBs)

🧩

Secure Connected Sensor Node

For secure connected sensor nodes the ATSAME53N20A-AF provides hardware AES for TLS handshakes, a TRNG for non-deterministic key generation, and a low-power Sleep mode that drops the Cortex-M4F clock to conserve battery. The 12-bit ADC at 1 Msps oversamples environmental data for averaging while the Cortex-M4F runs encryption in parallel. Dual-Panel Flash enables field firmware updates over the air while keeping the previous firmware image recoverable, eliminating bricking risk.

Рекомендуется

ATSAME53J19A-AF · Microchip Technology

📱

Capacitive Touch Control Panel

The ATSAME53N20A-AF integrates the Peripheral Touch Controller for self-capacitance and mutual-capacitance touch sensing, supporting up to 32 touch buttons or a small slider/wheel without an external touch IC. The 12-bit ADC is reused for proximity sensing and water-immune touch calibration. The 120 MHz Cortex-M4F handles touch-event post-processing while the AES engine secures configuration commands received over USB or Ethernet, making it well suited to kitchen-appliance and industrial control-panel front panels.

Рекомендуется

ATSAMD51N20A-AU · Microchip Technology

Сводка рекомендуемых товаров

LAN8720A 10/100 Ethernet PHY companion Используется в: Industrial IoT Gateway with Ethernet ATSAME53N19A-AU Microchip Technology Используется в: Industrial IoT Gateway with Ethernet ATSAMD51N20A-AF Microchip Technology Используется в: Secure Building Automation Controller ATSAME53J19A-AF Microchip Technology Используется в: USB Human-Machine Interface (HMI) Panel, Secure Connected Sensor Node ATSAME53N20A-AFT tape and reel variant for assembly line motor-drive PCBs Используется в: BLDC Motor Control Drive ATSAMD51N20A-AU Microchip Technology Используется в: Capacitive Touch Control Panel

What core and clock speed does the ATSAME53N20A-AF have?

The ATSAME53N20A-AF integrates a 32-bit ARM Cortex-M4F core with single-precision FPU and DSP extensions, running up to 120 MHz. According to the Microchip SAM E53 family datasheet, this core supports hardware single-precision floating-point math and saturated arithmetic, making it well-suited to real-time control loops with floating-point coefficients such as BLDC motor field-oriented control and audio DSP preprocessing.

How much flash and SRAM does the ATSAME53N20A-AF provide?

The ATSAME53N20A-AF provides 1 MB (1024 KB) of Dual-Panel Flash with ECC and 256 KB of SRAM with ECC. The dual-panel layout means the chip holds two independent flash arrays that allow one bank to execute code while the other is reprogrammed, enabling live firmware updates without a boot pause.

Where can I download the ATSAME53N20A-AF datasheet?

The official ATSAME53N20A-AF datasheet is available on the Microchip product page at https://www.microchip.com/en-us/product/ATSAME53N20A. The datasheet covers electrical characteristics, pinout, package dimensions, and the SAM D5x/E5x silicon errata and data sheet clarification document for the family.

What is the difference between ATSAME53N20A-AF and ATSAME53N20A-AU?

The ATSAME53N20A-AF is the 100-pin TQFP (14x14 mm) variant while the ATSAME53N20A-AU is the same silicon in a 100-pin TQFP (14x14 mm) tray packaging option. Both share the same die, peripherals, and pinout; the difference is the carrier format for assembly and the operating-temperature grade suffix. Both are functional drop-in equivalents on the same PCB footprint.

Is the ATSAME53N20A-AF pin-compatible with the ATSAME53N19A-AU?

Yes. The ATSAME53N20A-AF (100-pin TQFP) and the ATSAME53N19A-AU (100-pin TQFP) share the same SAM E53 family pinout and same peripheral set; the primary difference is the part suffix within the SAM E53 sub-family. They are drop-in compatible at the PCB level when the firmware is sized to the smaller flash/SRAM option of the J19 variant.

Does the ATSAME53N20A-AF support Ethernet?

Yes, the ATSAME53N20A-AF integrates a 10/100 Mbps Ethernet MAC with IEEE 1588 Precision Time Protocol (PTP) hardware timestamping. An external PHY (such as the LAN8720A or KSZ8081) is required to complete the physical layer, after which industrial protocols like EtherCAT, PROFINET, and TCP/IP can be implemented in software stacks such as lwIP or Microchip's MPLAB Harmony Net.

What is the operating voltage range of the ATSAME53N20A-AF?

The ATSAME53N20A-AF operates from 2.7 V to 3.6 V on its main VDD supply, with separate VDDIO and VDDC pins requiring on-board decoupling. According to the SAM E53 datasheet, the device supports core voltages down to 1.2 V internally generated by an on-chip DCDC converter, and the I/O ring can be powered from the same 3.3 V rail as the analog peripherals.

How much does the ATSAME53N20A-AF cost and where can I buy it?

Pricing for the ATSAME53N20A-AF was approximately $8.88 per unit at 100-piece quantity as of 2026-09-21, based on distributor listings. The part is available through authorized distributors including DigiKey, Mouser, Microchip Direct, and Heisener, with typical stock of several thousand units and lead times of one to three weeks.

What is the lead time for ATSAME53N20A-AF orders?

Lead time for the ATSAME53N20A-AF was quoted as March 13 to March 18 shipping window from major distributors as of 2026-09-21. Volume orders through Microchip Direct may carry longer lead times of 8 to 12 weeks, while distributor stock of 5,000+ units is generally available for immediate shipment.

Is the ATSAME53N20A-AF in stock at distributors?

Yes, the ATSAME53N20A-AF is in stock at multiple authorized distributors including DigiKey, Mouser, and Heisener as of 2026-09-21. Heisener reports 5,712 units in stock with shipping from March 13 to March 18, and Octopart aggregates stock across 7-8 distributors confirming broad availability.

Can I use ATSAME53N20A-AF for USB device applications?

Yes, the ATSAME53N20A-AF integrates a USB 2.0 Full-Speed device and host controller with on-chip PHY. For USB device applications no external PHY is required; for USB host mode a 5 V VBUS supply and over-current protection must be added externally. The Microchip Harmony framework provides CDC, HID, MSD, and vendor class drivers for both roles.

How does ATSAME53N20A-AF compare to STM32F407?

The ATSAME53N20A-AF and the STMicroelectronics STM32F407 both run Cortex-M4F cores with FPU and target similar 120-168 MHz performance classes, but the ATSAME53N20A-AF adds hardware AES, TRNG, IEEE 1588 Ethernet MAC, and Dual-Panel Flash, whereas the STM32F407 adds a crypto/hash hardware accelerator and external memory bus. The ATSAME53N20A-AF is a better fit for secure connected industrial designs; the STM32F407 is preferred where external SRAM/Flash expansion is required.

What is the best drop-in replacement for ATSAME53N20A-AF?

The best drop-in replacement for ATSAME53N20A-AF in the same 100-pin TQFP footprint is the ATSAME53N20A-AU, which shares the identical SAM E53 silicon and pinout with only packaging carrier difference. For designs that can accept reduced flash, the ATSAME53N19A-AU and ATSAME53J19A-AF are same-footprint alternatives with 512 KB Flash, with the J19 variant running at 48 MHz instead of 120 MHz.

When should I choose ATSAME53N20A-AF over ATSAME51N20A-AU?

Choose the ATSAME53N20A-AF when your design needs Ethernet MAC, USB with on-chip PHY, and IEEE 1588 PTP timestamping. Choose the ATSAME51N20A-AU when you do not need Ethernet but want to keep the same Cortex-M4F core, 1 MB Flash, and 100-pin TQFP footprint. Both parts share identical pinout in the same 100-pin TQFP package, allowing migration with no PCB change.

What are the key specifications of the ATSAME53N20A-AF that engineers should know?

The ATSAME53N20A-AF combines a 120 MHz Cortex-M4F core, 1 MB Dual-Panel Flash with ECC, 256 KB SRAM with ECC, 10/100 Ethernet MAC with IEEE 1588, USB 2.0 Full-Speed with on-chip PHY, hardware AES and TRNG, a 12-bit 1 Msps ADC, two 12-bit DACs, and a Peripheral Touch Controller in a 100-pin TQFP package operating from 2.7 V to 3.6 V over -40C to +125C.

What is the equivalent of ATSAME53N20A-AF from STMicroelectronics?

No direct STMicroelectronics part is drop-in pin-compatible with the ATSAME53N20A-AF in the 100-pin TQFP footprint. Functionally closest STM32 parts are the STM32F407VGT6 and STM32F405RGT6 in 100-pin LQFP packages, which share the Cortex-M4F core and 1 MB Flash class but require firmware and peripheral driver porting since the pin map differs.

Справочные инженерные данные для ATSAME53N20A-AF — сравнение, рекомендации по проектированию и информация о соответствии.

Руководство по выбору

Choose the ATSAME53N20A-AF when your design needs Ethernet connectivity, hardware AES security, and Dual-Panel Flash for fail-safe OTA updates in a 100-pin TQFP footprint. This is the highest-density SAM E53 variant and the natural choice for industrial IoT gateways and secure connected devices. For designs without Ethernet that can use USB-only or no wired connectivity, the ATSAMD51N20A-AF in the same 100-TQFP package offers the same Cortex-M4F 1 MB Flash at lower cost. For reduced memory needs, the ATSAME53N19A-AU drops flash to 512 KB while keeping Ethernet. For lower clock speed, the ATSAME53J19A-AF runs at 48 MHz with 512 KB Flash. All seven alternatives share the 100-pin TQFP footprint, enabling single PCB layout to cover the full SAM E53/D51 family.

Сравнение с аналогами

Параметр	Этот товар	ATSAME53N20A-AU	ATSAME53N20A-AFT	ATSAME53N19A-AU	ATSAME53J19A-AF	ATSAME51N20A-AU	ATSAMD51N20A-AF	ATSAMD51N20A-AU
Brand	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Package	100-TQFP (14x14)	100-TQFP (14x14)	100-TQFP (14x14)	100-TQFP (14x14)	100-TQFP (14x14)	100-TQFP (14x14)	100-TQFP (14x14)	100-TQFP (14x14)
Core	ARM Cortex-M4F 120 MHz	ARM Cortex-M4F 120 MHz	ARM Cortex-M4F 120 MHz	ARM Cortex-M4F 120 MHz	ARM Cortex-M4F 48 MHz	ARM Cortex-M4F 120 MHz	ARM Cortex-M4F 120 MHz	ARM Cortex-M4F 120 MHz
Flash	1 MB	1 MB	1 MB	512 KB	512 KB	1 MB	1 MB	1 MB
SRAM	256 KB	256 KB	256 KB	192 KB	192 KB	256 KB	256 KB	256 KB
Ethernet MAC	Yes (10/100 + IEEE 1588)	Yes (10/100 + IEEE 1588)	Yes (10/100 + IEEE 1588)	Yes (10/100 + IEEE 1588)	No	No	No	No
USB	USB 2.0 Full-Speed (Host+Device)	USB 2.0 Full-Speed (Host+Device)	USB 2.0 Full-Speed (Host+Device)	USB 2.0 Full-Speed (Host+Device)	USB 2.0 Full-Speed (Host+Device)	USB 2.0 Full-Speed (Host+Device)	USB 2.0 Full-Speed (Host+Device)	USB 2.0 Full-Speed (Host+Device)
Hardware AES	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
ADC	12-bit, 1 Msps, up to 32 ch	12-bit, 1 Msps, up to 32 ch	12-bit, 1 Msps, up to 32 ch	12-bit, 1 Msps, up to 32 ch	12-bit, 1 Msps, up to 32 ch	12-bit, 1 Msps, up to 32 ch	12-bit, 1 Msps, up to 32 ch	12-bit, 1 Msps, up to 32 ch
Operating Temperature	-40C to +125C	-40C to +85C	-40C to +125C	-40C to +85C	-40C to +125C	-40C to +85C	-40C to +125C	-40C to +85C

Ключевые отличия

Integrated 10/100 Ethernet MAC with IEEE 1588 PTP (против ATSAMD51N20A-AF)
Dual-Panel Flash for live OTA updates (против ATSAME53N19A-AU)
120 MHz operation in TQFP-100 (против ATSAME53J19A-AF)

Заметки по проектированию

The ATSAME53N20A-AF requires a clean 3.3 V supply with bulk capacitance of at least 4.7 uF within 5 mm of each VDD pin, plus 100 nF ceramic decoupling on every VDD/VSS pair. The on-chip DCDC converter must have its LC filter populated per the SAM E53 reference design; failure to do so causes core voltage noise that manifests as USB enumeration failures and ADC jitter. Estimated: a design with all 11 VDD pins decoupled by 100 nF + 4.7 uF bulk will hold VDD ripple below 50 mVpp at full 120 MHz operation.

Place the 32.768 kHz crystal within 3 mm of XIN32/XOUT32 with a ground guard ring, and route the 12 MHz main crystal traces symmetrically with matched trace lengths to avoid duty-cycle distortion. The Ethernet PHY MDI traces to the magnetics must be 100-ohm differential with no splits, and the USB DP/DM traces must be 90-ohm differential with no via stubs. Estimated: a 4-layer PCB with 1 oz copper and proper ground pour will keep junction temperature rise below 30 C at full industrial load.

Do not boot the SAM E53 from SPI flash without first configuring the BOOTPROT fuse, otherwise the ROM bootloader will not load application code and the part will appear dead. When using Dual-Panel Flash for OTA, ensure both panels are configured with the same size in the NVMCTRL controller or writes will silently corrupt the panel boundary. Use the on-chip temperature sensor to verify junction temperature stays within -40C to +125C; thermal shutdown does not reset the part, so application software must poll the sensor and throttle clocks.

Информация о соответствии

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Qualified

Без свинца

Yes

Без галогенов

Unknown

Конфликтные минералы

Compliant

RoHS and REACH compliance per Microchip product page. AEC-Q100 automotive qualification is not claimed for the standard -AF variant; AEC-Q100 qualified SAM E53 parts use the -AF-VAO or similar suffix. Halogen-free status not specified in provided data.

Данные проверены: 2026-09-21 — данные проверены и курируются командой компонентной инженерии XAIPART

Источники: Manufacturer Product Page, Distributor, Distributor, Manufacturer Datasheet, Octopart, Distributor

Связанные компоненты & термины

Microchip Technology ATSAME53N20A-AF ATSAME53N20A-AU ATSAME53N20A-AFT ATSAME53N19A-AU ATSAME53J19A-AF ATSAME51N20A-AU ATSAMD51N20A-AF ATSAMD51N20A-AU ARM Cortex-M4F Cortex-M4 FPU TQFP-100 TQFP 10/100 Ethernet MAC IEEE 1588 PTP USB 2.0 Full-Speed AES TRNG Dual-Panel Flash ECC 12-bit ADC 12-bit DAC Peripheral Touch Controller lwIP Harmony Net RoHS REACH AEC-Q100 industrial IoT secure connected sensor BLDC motor control HMI panel building automation