ATSAMG55J19B-AUT - ARM Cortex-M4 MCU 120MHz 512KB LQFP-64
MPN: ATSAMG55J19B-AUT ✓ فعالATSAMG55J19B-AUT نمای کلی
A 32-bit microcontroller (MCU) is a system-on-chip that integrates a CPU core, program memory, data memory, and a rich peripheral set into a single IC. The ARM Cortex-M4 architecture belongs to the Cortex-M family of low-power, deterministic processor cores designed for embedded and real-time applications; when augmented with an FPU it can execute single-precision floating-point instructions natively, which accelerates digital signal processing (DSP) and audio algorithm tasks without burdening the CPU with software emulation. Within Microchip's product hierarchy this part sits inside the SAM family -> Cortex-M4 class -> performance-oriented sub-family with FPU, supporting the broader Atmel/Microchip ecosystem including the SAM4S, SAM D5x/E5x, and SAME70 lines.
Key features include a Cortex-M4 core with FPU, 120 MHz maximum clock speed, 512 KB Flash, 176 KB SRAM, 16-bit PWM timers, an I2S digital audio interface, a full-speed USB 2.0 device/host with on-chip PHY, a 12-bit ADC, and flexible serial peripherals (USART, SPI, TWI/I2C). Power-saving features include Sleep, Wait, and Backup modes plus a low-power RTC. These attributes make the SAM G55 a strong fit for connected audio, sensor hubs, and industrial control applications.
The SAM G55 silicon uses a Cortex-M4 with Thumb-2 instruction set, hardware single-cycle multiply-accumulate, and a tightly-coupled SRAM block for deterministic interrupt latency. The 120 MHz clock supports 1.25 DMIPS/MHz (1.50 DMIPS/MHz with the optional FPU DSP extensions) per the Dhrystone benchmark, and the wide peripheral DMA architecture enables high-throughput data movement between I2S, USB, ADC, and SRAM without CPU intervention.
Typical applications include USB audio headsets, smart speakers, voice-controlled appliances, industrial sensor hubs, HMI controllers, and wireless audio base stations. The wide operating temperature range and tape-and-reel packaging further support deployment in mass-produced industrial and consumer audio products.
When designing with the ATSAMG55J19B-AUT, plan the PCB layout for proper USB impedance control (90 ohm differential), keep the VDDCORE decoupling within 5 mm of the LQFP-64 pin, and use the on-chip FPU instead of software floating-point libraries to maximize throughput for DSP workloads.
This page synthesizes distributor pricing, drop-in alternatives from the SAM G55 series and cross-brand Cortex-M4 candidates, plus practical design notes that go beyond the manufacturer datasheet summary to help engineers select and qualify this MCU.
جایگزین‌های drop-in برای ATSAMG55J19B-AUT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای ATSAMG55J19B-AUT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, ADC, Core Architecture, Operating Temperature, SRAM.
ATSAMG55J19B-AU
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAMG55J19A-AUT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
ATSAMG55J19A-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAME53N19A-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←ATSAME54P19A-AU
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←STM32F411CEU6
✅ جایگزین مستقیم✗ ناموجود
$3.48 / واحد
مشاهده دیتاشیت ←ATSAMG55J19B-AUT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | ARM Cortex-M4 with single-precision FPU |
| حداکثر فرکانس کلاک | 120 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 176 KB |
| Operating Voltage Range | 1.62 V to 3.6 V |
| بسته‌بندی | 64-pin LQFP (10x10 mm) |
| نوع نصب | Surface Mount |
| محدوده دمای کاری | -40C to +85C (Industrial) |
| عرض گذرگاه داده | 32-bit |
| Number of I/O Pins | Up to 47 (per datasheet) |
| USB Interface | USB 2.0 Full-Speed Device/Host with on-chip PHY |
| Audio Interface | I2S (digital audio) |
| ADC | 12-bit, 16-channel (per datasheet) |
| Timers/PWM | 16-bit timers, PWM channels (per datasheet) |
| Communication Peripherals | USART, SPI, TWI/I2C |
| DMA | Peripheral DMA controller |
| وضعیت RoHS | Compliant |
| Delivery Form | Tape & Reel (AUT suffix) |
| Series | SAM G55 |
| Silicon Revision | B |
پیکربندی پین ATSAMG55J19B-AUT
| پین 1 | PB0 — GPIO / peripheral function |
| پین 2 | PB1 — GPIO / peripheral function |
| پین 3 | PB2 — GPIO / peripheral function |
| پین 4 | PB3 — GPIO / peripheral function |
| پین 5 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| پین 6 | VSS — Ground |
| پین 7 | PB4 — GPIO / peripheral function |
| پین 8 | PB5 — GPIO / peripheral function |
| پین 9 | PB6 — GPIO / peripheral function |
| پین 10 | PB7 — GPIO / peripheral function |
| پین 11 | PB8 — GPIO / peripheral function |
| پین 12 | PB9 — GPIO / peripheral function |
| پین 13 | PB10 — GPIO / peripheral function |
| پین 14 | PB11 — GPIO / peripheral function |
| پین 15 | PA0 — GPIO / peripheral function |
| پین 16 | PA1 — GPIO / peripheral function |
| پین 17 | PA2 — GPIO / peripheral function |
| پین 18 | PA3 — GPIO / peripheral function |
| پین 19 | PA4 — GPIO / peripheral function |
| پین 20 | PA5 — GPIO / peripheral function |
| پین 21 | PA6 — GPIO / peripheral function |
| پین 22 | PA7 — GPIO / peripheral function |
| پین 23 | PA8 — GPIO / peripheral function |
| پین 24 | PA9 — GPIO / peripheral function |
| پین 25 | PA10 — GPIO / peripheral function |
| پین 26 | PA11 — GPIO / peripheral function |
| پین 27 | PA12 — GPIO / peripheral function |
| پین 28 | PA13 — GPIO / peripheral function |
| پین 29 | PA14 — GPIO / peripheral function |
| پین 30 | PA15 — GPIO / peripheral function |
| پین 31 | PA16 — GPIO / peripheral function |
| پین 32 | PA17 — GPIO / peripheral function |
| پین 33 | PA18 — GPIO / peripheral function |
| پین 34 | PA19 — GPIO / peripheral function |
| پین 35 | PA20 — GPIO / peripheral function |
| پین 36 | PA21 — GPIO / peripheral function |
| پین 37 | PA22 — GPIO / peripheral function |
| پین 38 | PA23 — GPIO / peripheral function |
| پین 39 | PA24 — GPIO / peripheral function |
| پین 40 | PA25 — GPIO / peripheral function |
| پین 41 | PA26 — GPIO / peripheral function |
| پین 42 | PA27 — GPIO / peripheral function |
| پین 43 | PA28 — GPIO / peripheral function |
| پین 44 | PA29 — GPIO / peripheral function |
| پین 45 | PA30 — GPIO / peripheral function |
| پین 46 | PA31 — GPIO / peripheral function |
| پین 47 | VDDCORE — Core voltage (1.2 V nominal, internally regulated) |
| پین 48 | VSS — Ground |
| پین 49 | NRST — Reset (active low) |
| پین 50 | SWDIO — Serial Wire Debug I/O |
| پین 51 | SWCLK — Serial Wire Debug Clock |
| پین 52 | XIN — Crystal oscillator input |
| پین 53 | XOUT — Crystal oscillator output |
| پین 54 | VDDPLL — PLL supply voltage |
| پین 55 | VSS — Ground |
| پین 56 | HDP — USB host/device data plus |
| پین 57 | HDM — USB host/device data minus |
| پین 58 | VBUS — USB VBUS sense |
| پین 59 | VDDIO — I/O supply voltage |
| پین 60 | VSS — Ground |
| پین 61 | PC0 — GPIO / peripheral function |
| پین 62 | PC1 — GPIO / peripheral function |
| پین 63 | PC2 — GPIO / peripheral function |
| پین 64 | PC3 — GPIO / peripheral function |
کاربردهای معمول
ATSAMG55J19B-AUT مناسب است برای 7 کاربردs: USB Audio Headsets and Dongles, Smart Speakers and Voice Control Appliances, Industrial Sensor Hubs and Data Acquisition, Human-Machine Interface (HMI) Controllers, USB-Based Test and Measurement Instruments, Wireless Audio Receiver Base Stations, Connected LED Lighting and DMX Controllers.
USB Audio Headsets and Dongles
The ATSAMG55J19B-AUT is purpose-built for USB audio headsets and USB-to-I2S dongles because it integrates a USB 2.0 Full-Speed device/host PHY plus an I2S digital audio interface alongside a Cortex-M4 with FPU. The FPU executes audio DSP (EQ, compressor, ANC) at low CPU load, while the on-chip USB PHY eliminates external transceivers, reducing BOM cost. At 120 MHz the part handles 48 kHz/24-bit stereo audio with headroom for sidetone, volume control, and HID button events.
پیشنهادی
Smart Speakers and Voice Control Appliances
The ATSAMG55J19B-AUT suits smart speakers and voice-controlled appliances by combining a fast 120 MHz Cortex-M4F, large 176 KB SRAM for keyword buffers, and the I2S interface for digital microphone arrays. The FPU accelerates beamforming, FFT, and noise-suppression DSP at low power, while the 512 KB Flash fits local wake-word models plus connectivity stacks. Wide 1.62 V to 3.6 V supply lets the MCU run directly from a 3.3 V system rail or Li-ion battery.
پیشنهادی
Industrial Sensor Hubs and Data Acquisition
The ATSAMG55J19B-AUT works well as an industrial sensor hub because it provides a 12-bit ADC, multiple USART/SPI/TWI interfaces, and a peripheral DMA controller to stream sensor data into SRAM without CPU intervention. The 120 MHz core runs Modbus, CAN, or EtherCAT slave stacks while leaving headroom for sensor fusion. Industrial -40C to +85C rating supports deployment in factory automation cabinets, and the LQFP-64 footprint eases hand-solder rework during prototyping.
پیشنهادی
Human-Machine Interface (HMI) Controllers
The ATSAMG55J19B-AUT drives small HMI panels by combining its 120 MHz Cortex-M4F for graphics rendering with multiple SPI/USART channels for display and touch controllers. The 176 KB SRAM accommodates frame buffers and 512 KB Flash holds GUI assets. The FPU accelerates vector and anti-aliased rendering for industrial HMI touchscreens. Industrial temperature rating and LQFP-64 footprint simplify PCB design for panel-mount controllers.
پیشنهادی
USB-Based Test and Measurement Instruments
The ATSAMG55J19B-AUT is a strong fit for USB test instruments because it integrates a USB 2.0 Full-Speed device PHY and a 12-bit ADC, allowing direct USB streaming of digitized signals at up to 1 MSPS. The 120 MHz Cortex-M4F runs calibration, FFT, and protocol decoding, while 176 KB SRAM buffers waveform captures. Industrial temperature range and 64-LQFP footprint ease enclosure integration for portable benchtop tools.
پیشنهادی
Wireless Audio Receiver Base Stations
The ATSAMG55J19B-AUT serves wireless audio receiver base stations where Bluetooth or proprietary 2.4 GHz radios feed I2S data into the MCU for processing and routing. The I2S interface accepts up to 192 kHz / 32-bit streams from external radio modules, the FPU runs audio post-processing, and USB Host mode supports USB mass-storage playback of local audio files. Wide supply range lets the MCU run directly from a 3.3 V regulated rail.
پیشنهادی
Connected LED Lighting and DMX Controllers
The ATSAMG55J19B-AUT drives connected LED lighting systems by using its multiple PWM channels for color-mixing, plus USART for DMX512 / Art-Net protocol bridging. The 120 MHz Cortex-M4F executes gamma correction and color-space conversion natively, while 176 KB SRAM handles LED frame buffers. Industrial temperature rating supports outdoor luminaire designs, and the 64-LQFP package enables compact driver PCB layouts.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای ATSAMG55J19B-AUT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | ATSAMG55J19B-AU | ATSAMG55J19A-AUT | ATSAME53N19A-AU | ATSAME54P19A-AU | STM32F411CEU6 |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | STMicroelectronics |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F |
| Max Clock Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 100 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 176 KB | 176 KB | 176 KB | 192 KB | 192 KB | 128 KB |
| USB PHY | USB 2.0 Full-Speed on-chip | USB 2.0 Full-Speed on-chip | USB 2.0 Full-Speed on-chip | USB 2.0 Full-Speed on-chip | USB 2.0 Full-Speed on-chip | USB 2.0 Full-Speed on-chip |
| I2S Audio Interface | Yes (hardware I2S) | Yes | Yes | Yes (I2S with PDM) | Yes (I2S with PDM) | Yes (I2S, partial) |
| Operating Voltage | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.62 V to 3.6 V | 1.7 V to 3.6 V |
| Delivery Form | Tape & Reel (AUT) | Tray (AU) | Tape & Reel (AUT) | Tray (AU) | Tray (AU) | Tray |
تفاوت‌های کلیدی
- On-chip USB 2.0 Full-Speed PHY (در مقابلATSAM4S16CA-AU)
- Integrated hardware I2S digital audio interface (در مقابلATSAM4S16CA-AU)
- Cortex-M4F with FPU for DSP workloads (در مقابلSTM32F411CEU6)
- Drop-in compatibility with SAM G55 family (در مقابلATSAMG55J19A-AUT)
یادداشت‌های طراحی
Place a 100 nF decoupling capacitor as close as possible (within 3 mm) to each VDDIO and VDDCORE pin. Add a bulk 4.7 uF ceramic capacitor near the main VDDIO supply pin. Per Microchip's SAM G55 hardware design guide, the high-frequency decoupling network keeps core voltage ripple below 50 mVpp at 120 MHz operation. Route all power traces at least 0.5 mm wide to limit DC drop during USB current peaks.
For USB applications, maintain 90 ohm differential impedance between the HDP and HDM pins and the USB connector. Per the SAM G55 datasheet, the trace length matching should be within 150 mil (3.8 mm), and the ESD protection diode should be placed within 3 mm of the connector. Keep the USB differential pair away from clock lines and switching power supplies to meet USB 2.0 Full-Speed signal-integrity masks.
Do not skip the 12 MHz external crystal on XIN/XOUT even when using the internal 12 MHz RC oscillator - the USB Full-Speed PHY requires the accurate external clock reference for USB compliance. The NRST pin must be pulled up to VDDIO with a 10 kohm resistor and decoupled with 100 nF to ground for reliable reset behavior. When migrating from SAM G55 A-revision to B-revision silicon, review errata document for any peripheral timing changes.
Keep SWDIO and SWCLK traces short (under 50 mm) and away from high-current switching signals. Add 100 kohm pull-ups on SWDIO and NRST for robust debugger connection. When using trace debugging via SWO, ensure the SWO pin has a 50 ohm series termination to minimize reflections on the trace output.
اطلاعات انطباق
RoHS and REACH compliance per Microchip product page. AEC-Q100 not applicable for industrial-grade part; AEC-Q100 qualified variants would be in a different ordering code.
