ATSAMG55J19B-AUT - ARM Cortex-M4 MCU 120MHz 512KB LQFP-64
MPN: ATSAMG55J19B-AUT ✓ Hoạt độngATSAMG55J19B-AUT Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ATSAMG55J19B-AUT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMG55J19B-AUT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Architecture, Operating Temperature, SRAM.
ATSAMG55J19B-AU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMG55J19A-AUT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMG55J19A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME53N19A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME54P19A-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →STM32F411CEU6
✅ Drop-In✗ Hết hàng
$3.48 / Đơn vị
Xem tài liệu →ATSAMG55J19B-AUT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M4 with single-precision FPU |
| Tần số xung maksimum | 120 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 176 KB |
| Operating Voltage Range | 1.62 V to 3.6 V |
| Hộp | 64-pin LQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Bề rộng đường dữ liệu | 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 |
| Trạng thái RoHS | Compliant |
| Delivery Form | Tape & Reel (AUT suffix) |
| Series | SAM G55 |
| Silicon Revision | B |
Cấu hình chân ATSAMG55J19B-AUT
| Chân 1 | PB0 — GPIO / peripheral function |
| Chân 2 | PB1 — GPIO / peripheral function |
| Chân 3 | PB2 — GPIO / peripheral function |
| Chân 4 | PB3 — GPIO / peripheral function |
| Chân 5 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| Chân 6 | VSS — Ground |
| Chân 7 | PB4 — GPIO / peripheral function |
| Chân 8 | PB5 — GPIO / peripheral function |
| Chân 9 | PB6 — GPIO / peripheral function |
| Chân 10 | PB7 — GPIO / peripheral function |
| Chân 11 | PB8 — GPIO / peripheral function |
| Chân 12 | PB9 — GPIO / peripheral function |
| Chân 13 | PB10 — GPIO / peripheral function |
| Chân 14 | PB11 — GPIO / peripheral function |
| Chân 15 | PA0 — GPIO / peripheral function |
| Chân 16 | PA1 — GPIO / peripheral function |
| Chân 17 | PA2 — GPIO / peripheral function |
| Chân 18 | PA3 — GPIO / peripheral function |
| Chân 19 | PA4 — GPIO / peripheral function |
| Chân 20 | PA5 — GPIO / peripheral function |
| Chân 21 | PA6 — GPIO / peripheral function |
| Chân 22 | PA7 — GPIO / peripheral function |
| Chân 23 | PA8 — GPIO / peripheral function |
| Chân 24 | PA9 — GPIO / peripheral function |
| Chân 25 | PA10 — GPIO / peripheral function |
| Chân 26 | PA11 — GPIO / peripheral function |
| Chân 27 | PA12 — GPIO / peripheral function |
| Chân 28 | PA13 — GPIO / peripheral function |
| Chân 29 | PA14 — GPIO / peripheral function |
| Chân 30 | PA15 — GPIO / peripheral function |
| Chân 31 | PA16 — GPIO / peripheral function |
| Chân 32 | PA17 — GPIO / peripheral function |
| Chân 33 | PA18 — GPIO / peripheral function |
| Chân 34 | PA19 — GPIO / peripheral function |
| Chân 35 | PA20 — GPIO / peripheral function |
| Chân 36 | PA21 — GPIO / peripheral function |
| Chân 37 | PA22 — GPIO / peripheral function |
| Chân 38 | PA23 — GPIO / peripheral function |
| Chân 39 | PA24 — GPIO / peripheral function |
| Chân 40 | PA25 — GPIO / peripheral function |
| Chân 41 | PA26 — GPIO / peripheral function |
| Chân 42 | PA27 — GPIO / peripheral function |
| Chân 43 | PA28 — GPIO / peripheral function |
| Chân 44 | PA29 — GPIO / peripheral function |
| Chân 45 | PA30 — GPIO / peripheral function |
| Chân 46 | PA31 — GPIO / peripheral function |
| Chân 47 | VDDCORE — Core voltage (1.2 V nominal, internally regulated) |
| Chân 48 | VSS — Ground |
| Chân 49 | NRST — Reset (active low) |
| Chân 50 | SWDIO — Serial Wire Debug I/O |
| Chân 51 | SWCLK — Serial Wire Debug Clock |
| Chân 52 | XIN — Crystal oscillator input |
| Chân 53 | XOUT — Crystal oscillator output |
| Chân 54 | VDDPLL — PLL supply voltage |
| Chân 55 | VSS — Ground |
| Chân 56 | HDP — USB host/device data plus |
| Chân 57 | HDM — USB host/device data minus |
| Chân 58 | VBUS — USB VBUS sense |
| Chân 59 | VDDIO — I/O supply voltage |
| Chân 60 | VSS — Ground |
| Chân 61 | PC0 — GPIO / peripheral function |
| Chân 62 | PC1 — GPIO / peripheral function |
| Chân 63 | PC2 — GPIO / peripheral function |
| Chân 64 | PC3 — GPIO / peripheral function |
Ứng dụng tiêu biểu
ATSAMG55J19B-AUT phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMG55J19B-AUT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- On-chip USB 2.0 Full-Speed PHY (vsATSAM4S16CA-AU)
- Integrated hardware I2S digital audio interface (vsATSAM4S16CA-AU)
- Cortex-M4F with FPU for DSP workloads (vsSTM32F411CEU6)
- Drop-in compatibility with SAM G55 family (vsATSAMG55J19A-AUT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
