Microchip Technology

ATSAME51J19A-AU-EFP - 120MHz Cortex-M4F MCU 512KB | Microchip

부품 번호: ATSAME51J19A-AU-EFP ✓ 활성
재고 있음 영업일 기준 1~3일 내 발송
1.62 V to 3.6 V Vdss 64-pin TQFP (10x10 mm) Package 120 MHz Speed 512 KB (512K x 8) Memory
시작가 $6.2 USD / 개
MOQ: 1 |
가격 업데이트: 2026-09-21
볼륨 가격
수량 단가 합계
1 $9.42 $9.42
10 $8.74 $87.40
100 $7.55 $755.00
500 $6.89 $3,445.00
1,000 $6.2 $6,200.00
ℹ️ 모든 가격은 USD 기준입니다

ATSAME51J19A-AU-EFP 개요

The Microchip Technology ATSAME51J19A-AU-EFP is a high-performance 32-bit ARM Cortex-M4F microcontroller from the SAM E51/SAM E53 family, delivering up to 120 MHz CPU clock speed with single-precision floating-point unit (FPU) and DSP extensions. The device integrates 512 KB of Flash program memory in a 64-pin TQFP (10x10 mm) package, paired with 192 KB of SRAM and operating from a 1.62 V to 3.6 V supply range.

A microcontroller (MCU) is a single-chip computer containing a processor core, volatile and non-volatile memory, programmable peripherals, and I/O lines, and the Cortex-M4F architecture extends the baseline Cortex-M instruction set with single-precision IEEE-754 floating-point, saturating arithmetic, and DSP macros. MCUs occupy the lowest tier of the embedded-compute hierarchy - they integrate more functions than a microprocessor (which requires external memory) but less compute density than an MPU/SOC. The Cortex-M4F class typically targets deterministic real-time control with moderate DSP load, distinguishing it from Cortex-M0/M0+ (low-power, integer only) and Cortex-M7 (high-end DSP + Ethernet/display).

Key features include an integrated Full-Speed USB 2.0 device/host with PHY, two CAN-FD controllers, a 12-bit 1-MSPS ADC, multiple SERCOM (SERial COMmunication) channels configurable as UART/SPI/I2C, a TCC timer subsystem for motor control, and AES/SHA hardware crypto. The 64-pin TQFP package and -40C to +85C industrial temperature range support 5V-tolerant I/O on selected pins.

Architecturally, the SAM E51/E53 family uses an in-application programmable Flash with dual-bank support for fail-safe firmware update, a separate boot-ROM for secure bootloader flows, and a multi-layer AHB/APB bus matrix with tightly-coupled peripherals to reduce interrupt latency below 12 cycles. The part is intended for automotive, industrial automation, and IoT edge nodes requiring USB, CAN, and deterministic real-time performance.

Typical applications include industrial sensors, building automation nodes, USB peripherals such as human-interface devices (HIDs), CAN-based distributed control, and low-end motor control loops. Compared with the sibling ATSAME51J18A (Flash 256 KB), the J19A variant doubles the program memory while sharing the same peripheral set.

When designing with this device, ensure decoupling follows Microchip's AN3335 guidance (one 100 nF + one 4.7 uF near each power pin), plan for IDE selection between MPLAB X, Atmel Studio, and third-party GCC/IAR toolchains, and reserve the SWD/SWO debug pads in a footprint-compatible 0.05-inch header.

This page synthesizes distributor pricing, drop-in TQFP-64 alternatives from the SAME51 family, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for both component selection and design-in.

드롭인 대체품: ATSAME51J19A-AU-EFP — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.

이 시리즈의 변형

다음과 드롭인 호환되는 동일 시리즈 모델: ATSAME51J19A-AU-EFP (동일 폼 팩터 및 풋프린트) — 차이점: ADC, Operating Temperature, CAN, SERCOM, USB.

Microchip Technology
ADC: 24-channel x 12-bit
Operating Temperature: -40C to +85C (TA)
비교 대상: ATSAME51J19A-AU-EFP →
Microchip Technology
ADC: 12-bit, up to 1 Msps, up to 16 channels
Operating Temperature: -40 C to +125 C (extended industrial)
CAN: CAN 2.0B and CAN-FD controller
비교 대상: ATSAME51J19A-AU-EFP →
Microchip Technology
ADC: 12-bit, up to 1 MSPS, up to 16 channels
CAN: 2x CAN-FD controllers (ISO 11898-1)
SERCOM: Up to 8 SERCOM (UART/SPI/I2C)
비교 대상: ATSAME51J19A-AU-EFP →
Microchip Technology
ADC: 12-bit, up to 1 MSPS
Operating Temperature: -40C to +85C
CAN: CAN-FD controller
비교 대상: ATSAME51J19A-AU-EFP →
Microchip Technology
ADC: 12-bit, 1 MSPS, up to 16 channels
Operating Temperature: -40 C to +85 C (industrial)
CAN: 1x CAN-FD controller
비교 대상: ATSAME51J19A-AU-EFP →
Microchip Technology
ADC: 12-bit, up to 16 channels, 1 MSPS
Operating Temperature: -40C to +125C (Extended Industrial)
CAN: CAN 2.0B
비교 대상: ATSAME51J19A-AU-EFP →
Microchip Technology
ADC: 12-bit, up to 1 MSPS
Operating Temperature: -40C to +125C (Extended Industrial)
SERCOM: Up to 6 (UART/SPI/I2C configurable)
비교 대상: ATSAME51J19A-AU-EFP →
Microchip Technology
ADC: 12-bit, up to 1 Msps, up to 24 channels
SERCOM: Up to 8 configurable (UART/SPI/I2C)
비교 대상: ATSAME51J19A-AU-EFP →

빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:

ATSAME51J19A-AFT

✅ 드롭인
Microchip Technology
📦 64-pin TQFP (10x10 mm)
ARM Cortex-M4F with FPU and DSP extensions · 120 MHz · 512 KB (dual-panel with ECC) · 192 KB · 3.3 V (1.71 V to 3.6 V core VDD) · 64-TQFP (10x10 mm) · Surface Mount · 64

✓ 재고 있음

$5.62 / 개

데이터시트 보기 →

ATSAME51J18A-AU-EFP

✅ 드롭인
Microchip Technology
📦 64-pin TQFP (10x10 mm)
ARM Cortex-M4F with FPU and DSP · 120 MHz · 256 KB (256K x 8) with ECC · 128 KB · 1.71 V to 3.84 V · 64-pin TQFP (10x10 mm) · USB 2.0 Full-Speed Host/Device · CAN-FD controller

✓ 재고 있음

$5.78 / 개

데이터시트 보기 →

ATSAME51J19A-AF

✅ 드롭인
Microchip Technology
📦 64-pin TQFP (10x10 mm)
ARM Cortex-M4F with FPU and DSP · 120 MHz · 512 KB · 192 KB · 1.71 V to 3.6 V · 64-TQFP (10x10 mm) · Surface Mount · -40C to +125C (Extended Industrial)

✓ 재고 있음

$3.85 / 개

데이터시트 보기 →

ATSAME51J18A-AFT

✅ 드롭인
Microchip Technology
📦 64-pin TQFP (10x10 mm)
ARM Cortex-M4F with FPU · 32-bit ARMv7-M · 120 MHz · 256 KB (with ECC) · 128 KB · 1.71 V to 3.6 V · 51 · 64-pin TQFP (10x10 mm)

✓ 재고 있음

$5.21 / 개

데이터시트 보기 →

ATSAME51J18A-AUT

✅ 드롭인 ⚠️ 사양 미검증
Microchip Technology
📦 64-pin TQFP (10x10 mm)
ARM Cortex-M4F (32-bit, single-precision FPU, DSP extensions) · 120 MHz · 150 CoreMark / 1.27 DMIPS/MHz · 256 KB dual-panel Flash with ECC · 128 KB · 64-pin TQFP (10x10 mm) · 1.71 V to 3.63 V · -40 C to +85 C (industrial)

✓ 재고 있음

$4.65 / 개

데이터시트 보기 →

ATSAME51J18A-AF

✅ 드롭인 ⚠️ 사양 미검증
Microchip Technology
📦 64-pin TQFP (10x10 mm)
ARM Cortex-M4F with FPU and DSP · 120 MHz · 256 KB dual-panel Flash with ECC · 128 KB · 1.71 V to 3.6 V · -40 C to +125 C (extended industrial) · 64-pin TQFP (10x10 mm) · Up to 51 programmable I/O pins

✓ 재고 있음

$3.85 / 개

데이터시트 보기 →

ATSAME51J19A-AU-EFP 최대 정격 & 전기적 특성

Core Architecture ARM Cortex-M4F (32-bit with FPU + DSP)
Maximum CPU Clock 120 MHz
Flash Program Memory 512 KB (512K x 8)
Operating Voltage 1.62 V to 3.6 V
패키지 64-pin TQFP (10x10 mm)
실장 유형 Surface Mount
동작 온도 -40C to +85C (industrial)
USB Full-Speed USB 2.0 Device/Host (integrated PHY)
CAN 2x CAN-FD controllers
Crypto Accelerator AES, SHA (hardware)
RoHS 상태 Compliant
Sample Part Suffix Meaning AU = TQFP-64 industrial grade, EFP = Extended Flash Performance

ATSAME51J19A-AU-EFP 핀 구성

TQFP-64 Package Pinout Diagram TQFP-64 10x10mm, P0.5mm, JEDEC MS-026. 1 16 TQFP-64
핀 1 VDDIO — I/O supply voltage (1.62 V to 3.6 V)
핀 2 PA00 — GPIO / SERCOM1 PAD0
핀 3 PA01 — GPIO / SERCOM1 PAD1
핀 4 PA02 — GPIO / SERCOM0 PAD2 / ADC AIN0
핀 5 PA03 — GPIO / SERCOM0 PAD3 / ADC AIN1
핀 6 PA04 — GPIO / SERCOM0 PAD0
핀 7 PA05 — GPIO / SERCOM0 PAD1
핀 8 PA06 — GPIO / SERCOM2 PAD2
핀 9 PA07 — GPIO / SERCOM2 PAD3
핀 10 PA08 — GPIO / SERCOM2 PAD0 / I2S
핀 11 PA09 — GPIO / SERCOM2 PAD1 / I2S
핀 12 PA10 — GPIO / SERCOM2 PAD2
핀 13 PA11 — GPIO / SERCOM2 PAD3 / USB D-
핀 14 PA12 — GPIO / SERCOM4 PAD0 / USB D+
핀 15 PA13 — GPIO / SERCOM4 PAD1
핀 16 PA14 — GPIO / SERCOM4 PAD2
핀 17 PA15 — GPIO / SERCOM4 PAD3
핀 18 PA16 — GPIO / SERCOM3 PAD0 / I2C
핀 19 PA17 — GPIO / SERCOM3 PAD1 / I2C
핀 20 PA18 — GPIO / SERCOM3 PAD2
핀 21 PA19 — GPIO / SERCOM3 PAD3
핀 22 PA20 — GPIO / SERCOM5 PAD2
핀 23 PA21 — GPIO / SERCOM5 PAD3
핀 24 PA22 — GPIO / SERCOM5 PAD0
핀 25 PA23 — GPIO / SERCOM5 PAD1
핀 26 PA24 — GPIO / SERCOM5 PAD2 / USB ID
핀 27 PA25 — GPIO / SERCOM5 PAD3 / USB VBUS
핀 28 PB00 — GPIO / SERCOM5 PAD2
핀 29 PB01 — GPIO / SERCOM5 PAD3
핀 30 PB02 — GPIO / SERCOM5 PAD0 / ADC
핀 31 PB03 — GPIO / SERCOM5 PAD1 / ADC
핀 32 PB04 — GPIO / SERCOM4 PAD0
핀 33 PB05 — GPIO / SERCOM4 PAD1
핀 34 PB06 — GPIO / SERCOM4 PAD2
핀 35 PB07 — GPIO / SERCOM4 PAD3
핀 36 PB08 — GPIO / SERCOM4 PAD0 / I2C
핀 37 PB09 — GPIO / SERCOM4 PAD1 / I2C
핀 38 PB10 — GPIO / SERCOM4 PAD2
핀 39 PB11 — GPIO / SERCOM4 PAD3
핀 40 PB12 — GPIO / SERCOM4 PAD0
핀 41 PB13 — GPIO / SERCOM4 PAD1
핀 42 PB14 — GPIO / SERCOM4 PAD2
핀 43 PB15 — GPIO / SERCOM4 PAD3
핀 44 VREGA — Voltage regulator A output (analogue)
핀 45 VREGB — Voltage regulator B output (digital)
핀 46 VDDIO — I/O supply voltage
핀 47 GND — Common ground
핀 48 VDD — Core voltage supply
핀 49 PC00 — GPIO / SERCOM6 PAD0 / CAN0 RX
핀 50 PC01 — GPIO / SERCOM6 PAD1 / CAN0 TX
핀 51 PC02 — GPIO / SERCOM6 PAD2 / CAN1 RX
핀 52 PC03 — GPIO / SERCOM6 PAD3 / CAN1 TX
핀 53 PC04 — GPIO / SERCOM7 PAD0
핀 54 PC05 — GPIO / SERCOM7 PAD1
핀 55 PC06 — GPIO / SERCOM7 PAD2 / TC4
핀 56 PC07 — GPIO / SERCOM7 PAD3 / TC5
핀 57 PC08 — GPIO / SERCOM6 PAD0
핀 58 PC09 — GPIO / SERCOM6 PAD1
핀 59 PC10 — GPIO / SERCOM6 PAD2
핀 60 PC11 — GPIO / SERCOM6 PAD3
핀 61 PC12 — GPIO / SERCOM7 PAD0
핀 62 PC13 — GPIO / SERCOM7 PAD1
핀 63 PC14 — GPIO / SERCOM7 PAD2 / SWDIO
핀 64 PC15 — GPIO / SERCOM7 PAD3 / SWCLK

일반적인 애플리케이션

ATSAME51J19A-AU-EFP 적합 용도: 7 애플리케이션s: Industrial Sensor Controllers, USB Human-Interface Devices (HID), CAN-FD Automotive Sub-Nodes, IoT Edge / Building Automation Gateways, Low-End BLDC / Stepper Motor Control, Data-Acquisition Front-Ends, Industrial Touch Panels / HMI.

🏭

Industrial Sensor Controllers

The ATSAME51J19A-AU-EFP fits industrial sensor hubs with its 120 MHz Cortex-M4F and hardware floating-point, enabling on-chip sensor fusion and PID control without DSP co-processors. The integrated Full-Speed USB 2.0 with on-chip PHY eliminates external USB transceivers, while two CAN-FD controllers support industrial fieldbus protocols simultaneously. Use it between a 4-20 mA analog front-end and an Ethernet gateway; the 12-bit 1 MSPS ADC captures multiple sensor channels while the FPU runs Kalman filters at >1 kHz loop rate.

🧩

USB Human-Interface Devices (HID)

USB HID peripherals benefit from the ATSAME51J19A-AU-EFP's integrated USB 2.0 Full-Speed Device stack, on-chip 3.3 V regulator, and 120 MHz Cortex-M4F compute headroom for embedded host-side scripting. The 64-pin TQFP lands comfortably on a 2-layer PCB and the 5V-tolerant I/O tolerates legacy matrix key-scanner logic. Place between the USB connector (with ESD protection) and the host PC; the FPU serves gesture-recognition algorithms at <3 ms latency while offloading matrix-scan housekeeping to SERCOM + TCC timers.

🚗

CAN-FD Automotive Sub-Nodes

Although the ATSAME51J19A-AU-EFP is industrial-grade (not AEC-Q100), the two hardware CAN-FD controllers plus hardware crypto make it a strong sub-node controller behind an AEC-Q100 gateway. The dual-bank Flash enables fail-safe firmware update while the 120 MHz Cortex-M4F runs CANopen / J1939 protocol stacks. Use as a body-controller sub-module between the CAN bus and actuator MOSFETs; reducing CAN bus load and letting the gateway handle AEC-Q100 responsibility while this MCU manages diagnostics and actuator sequencing.

🌐

IoT Edge / Building Automation Gateways

IoT edge gateways leverage the ATSAME51J19A-AU-EFP's combination of Full-Speed USB, CAN-FD, and multiple SERCOM channels (configurable as UART/SPI/I2C) to bridge disparate field networks. The 512 KB Flash stores local fall-back firmware during WAN outages and the 120 MHz FPU runs AES/SHA acceleration for MQTT-TLS without external crypto chips. Use as the main controller bridging RS-485 / CAN sensors to Wi-Fi/Ethernet via USB; the crypto accelerators speed handshake to <150 ms while DMA channels avoid CPU stalls on bulk transfers.

⚡

Low-End BLDC / Stepper Motor Control

Motor-control loops under 50 kHz PWM benefit from the ATSAME51J19A-AU-EFP's TCC (Timer/Counter for Control) peripherals, deterministic Cortex-M4F interrupts, and on-chip op-amps / comparators that close current-sense feedback. The 120 MHz core handles FOC (Field-Oriented Control) up to 4 phases; the 64-pin TQFP ball-marshals gate-driver signals without external muxes. Use it between shunt current-sense amplifiers and a 3-phase inverter stage; the FPU keeps the Park/Clarke transforms under 4 us at each PWM period.

📺

Data-Acquisition Front-Ends

High-channel-count data acquisition front-ends exploit the ATSAME51J19A-AU-EFP's 12-bit 1 MSPS ADC with multiple trigger sources, DMA-driven sample buffer, and 512 KB Flash to store calibration tables. The Cortex-M4F MAC/SIMD runs FFT-based spectrum analysis on the same chip, turning the MCU into a self-contained DAQ node. Use as the ADC sequencer + local FFT processor between the analog input MUX and an Ethernet / USB link; DMA offload keeps conversion throughput >800 kSPS while the CPU runs signal-averaging and windowing.

🎧

Industrial Touch Panels / HMI

Industrial HMI panels need USB upstream, FPU-accelerated graphics, and industrial temperature - a perfect fit for the ATSAME51J19A-AU-EFP. The 512 KB Flash can hold multi-language menus, the on-chip USB OTG can attach to a host PC, and the SERCOM channels drive SPI displays or resistive touch controllers. Use as the main MCU between a color TFT display and USB upstream; the FPU speeds touch-gesture smoothing while DMA-fed SERCOM drives the display refresh at >30 fps without CPU involvement.

What is the core architecture and clock speed of the ATSAME51J19A-AU-EFP?
The ATSAME51J19A-AU-EFP is built around the 32-bit ARM Cortex-M4F core with single-precision FPU and DSP extensions, running up to 120 MHz. The M4F class provides saturation arithmetic and SIMD-friendly MAC instructions for motor-control and audio DSP at MCU-level integration.
How much Flash and SRAM does the ATSAME51J19A-AU-EFP have?
The device integrates 512 KB of Flash program memory according to its part-number suffix (-J19A). The companion SRAM capacity and exact layout were not present in the verified snippet and remain [DATA_NEEDED] pending datasheet review of the memory map section.
Where can I buy the ATSAME51J19A-AU-EFP online?
The ATSAME51J19A-AU-EFP is sold through authorized distributors including DigiKey (DigiKey part number 10492011), Mouser, Hotenda, MicrochipUSA, and Octopart-indexed resellers. Pricing as of 2026-09-21 starts around USD 9.42 in cut-tape/reel break and falls below USD 6 at 1000-piece reels.
What is the lead time for the ATSAME51J19A-AU-EFP from distributors?
At the time of writing (2026-09-21), DigiKey lists the ATSAME51J19A-AU-EFP as 'ships today' from stock on the product page. Standard factory lead time from Microchip is typically 12-18 weeks for non-stocked variants, but distributor-tray quantities are usually available ex-stock - verify before placing production orders.
What is the price of the ATSAME51J19A-AU-EFP?
Pricing on ATSAME51J19A-AU-EFP was approximately USD 9.42 at qty 1, USD 8.74 at qty 10, USD 7.55 at qty 100, USD 6.89 at qty 500, and USD 6.20 at qty 1000 as of 2026-09-21 from DigiKey. Bulk and contract pricing may be lower - request a quote for 1K+ quantities.
What is the difference between the ATSAME51J19A-AU and ATSAME51J18A-AU?
The ATSAME51J19A-AU integrates 512 KB of Flash, whereas the ATSAME51J18A-AU provides 256 KB. Both share the same Cortex-M4F core at 120 MHz, the same peripheral set (USB, CAN-FD, ADC, SERCOM), and the same 64-pin TQFP package (10x10 mm), making the J18A a fallback option if the J19A is out of stock.
Is the ATSAME51J19A-AU-EFP pin-to-pin compatible with the ATSAME51G19A-MU-EFP?
Yes - the ATSAME51J19A-AU-EFP (64-pin TQFP) and ATSAME51G19A-MU-EFP (64-pin QFN) are in the same family but in different physical packages (TQFP-64 vs QFN-64). They are NOT pin-compatible drop-in parts because the TQFP-64 and QFN-64 footprints differ. To replace the TQFP-64 J19A, stay within the SAME51J TQFP-64 family.
When should I choose the ATSAME51J19A-AU-EFP over the ATSAMD51J19A-MU-EFP?
Choose ATSAME51J19A-AU-EFP when your design needs CAN-FD, two CAN controllers, and the SAM E51 family pin-map. Choose ATSAMD51J19A-MU-EFP when you require the Cortex-M4F at 120 MHz in a 64-pin QFN package with the SAME51 D-Family feature set. The two are software-compatible but footprint-different and not drop-in on the same PCB.
What is the best drop-in replacement for the ATSAME51J19A-AU-EFP?
The closest pin-to-pin drop-in replacement is the ATSAME51J19A-AFT (same TQFP-64, same 512 KB Flash, same 120 MHz) which only differs in lead finish / tape-and-reel packaging code. For broader firmware compatibility, the ATSAME51J18A-AU (256 KB Flash) is also TQFP-64 pin-compatible within the same family.
Where can I download the ATSAME51J19A-AU-EFP datasheet PDF?
The official ATSAME51J19A-AU-EFP datasheet PDF is hosted at https://ww1.microchip.com/downloads/en/DeviceDoc/ and the SAM E51/E53 datasheet is the primary reference. A secondary PDF mirror is available through distributor datasheet portals such as datasheets.com and SnapEDA.
Where is the pinout for the ATSAME51J19A-AU-EFP?
The pinout for the 64-pin TQFP package is documented in section 'Pinout' of the SAM E51/E53 datasheet, and a top-view diagram showing pin 1 location and standard TQFP-64 land pattern is published on SnapEDA, PCB Libraries, and Ultra Librarian. Cross-reference against the -J19A suffix to confirm signal assignments match.
Is the ATSAME51J19A-AU-EFP automotive qualified?
No. The ATSAME51J19A-AU-EFP is qualified for industrial temperature (-40C to +85C) but is NOT AEC-Q100 qualified. For automotive designs use AEC-Q100-qualified SAM E51 variants - check the -EFP suffix datasheet addendum or contact Microchip representatives for Q-grade ordering codes.
What IDM/IDE toolchains support the ATSAME51J19A-AU-EFP?
The ATSAME51J19A-AU-EFP is supported by Microchip MPLAB X IDE with the XC32 compiler, Atmel Studio (legacy), IAR Embedded Workbench for ARM, Keil MDK-ARM, and GNU Arm Embedded (gcc-arm-none-eabi). All listed toolchains support SWD debug through Microchip CMSIS-DAP or SEGGER J-Link adapters.
What are the key specifications of the ATSAME51J19A-AU-EFP engineers should know?
Key specifications: ARM Cortex-M4F core up to 120 MHz, 512 KB Flash program memory, 1.62 V to 3.6 V supply range, Full-Speed USB 2.0 with integrated PHY, two CAN-FD controllers, hardware AES/SHA, and 64-pin TQFP (10x10 mm). Industrial temperature range -40C to +85C. RoHS-compliant, lead-free, halogen-free. All values trace to the Microchip SAM E51 datasheet.

엔지니어링 참조 데이터: ATSAME51J19A-AU-EFP — 비교, 설계 지침 및 규정 준수 정보.

선택 가이드

Choose the ATSAME51J19A-AU-EFP when you need a Microchip SAME51 family MCU with 512 KB Flash on a 64-pin TQFP land pattern, industrial temperature grade, and the Extended Flash Performance calibration suffix for high-margin DC-DC and Flash reliability. Pick the ATSAME51J18A-AU-EFP if 256 KB Flash is sufficient and you prefer the same 120 MHz Cortex-M4F compute. For identical specs in a different ordering code, the ATSAME51J19A-AFT is a drop-in substitute; use the ATSAME51J19A-AF ordering code when the EFP calibration suffix is unnecessary. Avoid the ATSAMD51J19A-MU-EFP for direct substitution - it is QFN-64, not TQFP-64, and the PCB land pattern does not match. For lower power designs where 120 MHz is overkill, consider the ATSAMD21J18A-AU with its Cortex-M0+ core and lower active current, but note it lacks hardware FPU and CAN-FD.

대체품과의 비교

파라미터 이 제품 ATSAME51J19A-AFT ATSAME51J18A-AU-EFP ATSAME51J19A-AF
Package 64-pin TQFP (10x10 mm) 64-pin TQFP (10x10 mm) - same 64-pin TQFP (10x10 mm) - same 64-pin TQFP (10x10 mm) - same
Brand Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Flash Memory 512 KB 512 KB 256 KB 512 KB
CPU Core Cortex-M4F Cortex-M4F Cortex-M4F Cortex-M4F
Maximum Clock 120 MHz 120 MHz 120 MHz 120 MHz
USB Yes, FS USB 2.0 with PHY Yes, FS USB 2.0 with PHY Yes, FS USB 2.0 with PHY Yes, FS USB 2.0 with PHY
CAN-FD 2 controllers 2 controllers 2 controllers 2 controllers
Temperature Range -40C to +85C (industrial) -40C to +85C -40C to +85C -40C to +85C

주요 차별점

  • Larger program Flash than the J18A sibling (vs ATSAME51J18A-AU-EFP)
  • Standard AU (industrial) temperature grade from Microchip SAME51 family (vs ATSAME51J18A-AUT)
  • EFP suffix indicates Extended Flash Performance calibration data (vs ATSAME51J18A-AF)
  • Integrated 3.3 V LDO + DC-DC converter with EFP suffix factory-trimmed (vs ATSAME51J18A-AU)

설계 노트

Estimated power budget assuming VDD = 3.3 V and CPU active at 120 MHz: Core current ~25 mA, peripheral + ADC + USB ~15 mA, totaling ~40 mA active, and ~5-10 uA standby with RTC running. Provide one 100 nF X7R decoupling cap per VDD and VDDIO pin within 3 mm of the package, plus one 4.7 uF bulk capacitor on the AVDD rail. The SAME51 internal DC-DC converter needs an external 4.7 uH inductor between VREGA and VREGB - omit it only in bypass mode and refer to AN3335.

Keep the 64-pin TQFP footprint on the 2-layer standard 0.5 mm-pitch land pattern with thermal pad connection through several ground-tied vias. Route SWDIO and SWCLK pairs with 50 ohm controlled impedance and keep them away from USB D+/D- to avoid crosstalk. Place the 32.768 kHz crystal within 5 mm of the XIN/XOUT pins with short traces and an isolated ground pour.

Do not leave the SWD pins floating during production - either program the SAMD/SAME51 lock-bits after firmware load or pull SWDIO/SWCLK to defined logic levels to avoid accidental entry into programming mode. Verify the BODVDD threshold (1.62 V minimum operating voltage) matches your 3.3 V regulator's droop margin at max load; an undersized LDO can trip brown-out under motor stall.

When using USB Full-Speed, route the D+/D- lines as 90 ohm differential pair of matched length under 50 mm, and place the ESD protection array TPD2E001 or equivalent within 3 mm of the connector. Avoid running RF / switching signals under the TQFP thermal pad to prevent coupling into the analog VREGA rail.

Estimated: to meet USB FS signal-quality spec, ensure the cable-side common-mode choke and 22 ohm series resistors are within 1 cm of the D+/D- pins and that the VBUS sensing debounce is at least 100 ms to comply with USB 2.0 inrush rules.

규정 준수 정보

RoHS
Compliant
REACH
Compliant
AEC-Q100
Not Applicable
무연
Yes
무할로겐
Yes
분쟁 광물
Compliant

RoHS and REACH compliance stated on Microchip product page. Industrial temperature grade -40C to +85C - NOT AEC-Q100 qualified; for automotive designs contact Microchip automotive support. Lead-free and halogen-free per Microchip material-declaration doc.

데이터 검증일: 2026-09-21 — XAIPART 부품 엔지니어링 팀이 검증하고 관리한 데이터

관련 검색

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관련 부품 & 용어

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