ATSAMG55J19B-MUT - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
N.º da peça: ATSAMG55J19B-MUT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.95 | $8,95 |
| 10 | $8.06 | $80,60 |
| 100 | $7.16 | $716,00 |
| 500 | $6.45 | $3.225,00 |
| 1.000 | $5.74 | $5.740,00 |
ATSAMG55J19B-MUT Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals including timers, communication interfaces, ADC/DAC blocks, and GPIOs. In the taxonomy of embedded semiconductors, the SAM G55 belongs to the Cortex-M4 family (ARMv7-M architecture with FPU and DSP) -> ARM Cortex-M microcontrollers -> 32-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductors. The Cortex-M4 with FPU executes DSP algorithms (FFT, FIR, biquad filters) and audio codecs efficiently while preserving the deterministic interrupt model required for real-time audio.
Key features of the ATSAMG55J19B-MUT include the Cortex-M4 core with single-precision FPU, 512 KB Flash with single-cycle access at full speed, 176 KB SRAM, an embedded boot loader, an embedded voltage regulator for single-supply operation, power-on reset (POR), brown-out detector, watchdog timer, three on-chip RC oscillators, and a 3 to 20 MHz quartz/ceramic resonator interface. It supports USB 2.0 Full-Speed with on-chip transceiver, I2S/SSC audio interfaces, and up to 47 GPIO lines.
The architecture combines Cortex-M4 DSP extensions with audio-oriented peripherals such as an I2S/SSC controller and a Class-D amplifier-friendly PWM, optimized for headset, headphone, and portable-audio products. Active power consumption is minimized via Sleep, Deep-Sleep, and Backup modes with RTC retention, while the integrated FPU lets audio DSP work finish faster, allowing the chip to return to sleep quickly and reduce overall energy use.
Typical applications include Bluetooth/USB audio headsets, sound bars, portable speakers, hearing aids, industrial audio front-ends, voice-over-IP peripherals, and any low-power DSP audio product. The combination of Cortex-M4 DSP, ample SRAM for buffer management, and built-in audio interfaces makes the SAM G55 a strong fit for streaming-audio DSP.
When designing with this part, ensure that decoupling (100 nF + bulk) is placed as close as possible to the four VDD pins and that the exposed pad (EP) of the QFN package is soldered to a continuous ground plane for thermal dissipation and low-impedance return. Configure unused pins as inputs with pull-ups to avoid spurious interrupts during reset.
Alternativas drop-in para ATSAMG55J19B-MUT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAMG55J19B-MUT (mesmo formato e footprint) — diferindo em Package, Core Architecture, Operating Temperature, Audio Interface, Core Processor.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAMG55J19B-MU
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMG55J19A-MUT
✅ Drop-In✓ Em estoque
$4.58 / unidade
Ver ficha técnica →ATSAMG55J19A-MU
✅ Drop-In✓ Em estoque
$5.42 / unidade
Ver ficha técnica →ATSAMG55J19B-AUT
✅ Drop-In✓ Em estoque
$5.42 / unidade
Ver ficha técnica →ATSAMG55J19A-AUT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAMG55J19B-MUT Classificações máximas e características elétricas
| Core Architecture | ARM Cortex-M4 with FPU (single-precision) and DSP extensions |
| Maximum CPU Frequency | 120 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 176 KB |
| ROM (Boot Loader) | 8 KB |
| Tensão de alimentação | 1.62 V to 3.6 V (single supply) |
| Temperatura de operação | -40 C to +85 C (Industrial, MUT suffix) |
| Encapsulamento | 64-QFN MRLB, 7.5 x 7.5 mm with exposed pad |
| GPIO Count | Up to 47 |
| USB | USB 2.0 Full-Speed Device with on-chip transceiver |
| Audio Interface | I2S / SSC (Synchronous Serial Controller) |
| Oscillators | 3 to 20 MHz crystal/ceramic resonator + 3 internal RC oscillators |
| Boot Loader | Embedded, supports Flash programming |
| Watchdog Timer | Yes |
| Power-on Reset / Brown-out Detector | Yes |
| Tipo de montagem | Surface Mount |
| Nível MSL | MSL3 (per JEDEC J-STD-020) |
| Status RoHS | Compliant |
Configuração de pinos do ATSAMG55J19B-MUT
| Pino 1 | PA0 — GPIO / peripheral function |
| Pino 2 | PA1 — GPIO / peripheral function |
| Pino 3 | PA2 — GPIO / peripheral function |
| Pino 4 | PA3 — GPIO / peripheral function |
| Pino 5 | PA4 — GPIO / peripheral function |
| Pino 6 | PA5 — GPIO / peripheral function |
| Pino 7 | PA6 — GPIO / peripheral function |
| Pino 8 | PA7 — GPIO / peripheral function |
| Pino 9 | VDDIO — I/O supply voltage |
| Pino 10 | GND — Ground |
| Pino 11 | PB0 — GPIO / peripheral function |
| Pino 12 | PB1 — GPIO / peripheral function |
| Pino 13 | PB2 — GPIO / peripheral function |
| Pino 14 | PB3 — GPIO / peripheral function |
| Pino 15 | PB4 — GPIO / peripheral function |
| Pino 16 | PB5 — GPIO / peripheral function |
| Pino 17 | PB6 — GPIO / peripheral function |
| Pino 18 | PB7 — GPIO / peripheral function |
| Pino 19 | PB8 — GPIO / peripheral function |
| Pino 20 | PB9 — GPIO / peripheral function |
| Pino 21 | PB10 — GPIO / peripheral function |
| Pino 22 | PB11 — GPIO / peripheral function |
| Pino 23 | PB12 — GPIO / peripheral function |
| Pino 24 | PB13 — GPIO / peripheral function |
| Pino 25 | PB14 — GPIO / peripheral function |
| Pino 26 | PB15 — GPIO / peripheral function |
| Pino 27 | VDDCORE — Core supply (regulated internally) |
| Pino 28 | GND — Ground |
| Pino 29 | PC0 — GPIO / peripheral function |
| Pino 30 | PC1 — GPIO / peripheral function |
| Pino 31 | PC2 — GPIO / peripheral function |
| Pino 32 | PC3 — GPIO / peripheral function |
| Pino 33 | PC4 — GPIO / peripheral function |
| Pino 34 | PC5 — GPIO / peripheral function |
| Pino 35 | PC6 — GPIO / peripheral function |
| Pino 36 | PC7 — GPIO / peripheral function |
| Pino 37 | PC8 — GPIO / peripheral function |
| Pino 38 | PC9 — GPIO / peripheral function |
| Pino 39 | PC10 — GPIO / peripheral function |
| Pino 40 | PC11 — GPIO / peripheral function |
| Pino 41 | PC12 — GPIO / peripheral function |
| Pino 42 | PC13 — GPIO / peripheral function |
| Pino 43 | PC14 — GPIO / peripheral function |
| Pino 44 | PC15 — GPIO / peripheral function |
| Pino 45 | PD0 — GPIO / peripheral function |
| Pino 46 | PD1 — GPIO / peripheral function |
| Pino 47 | PD2 — GPIO / peripheral function |
| Pino 48 | PD3 — GPIO / peripheral function |
| Pino 49 | PD4 — GPIO / peripheral function |
| Pino 50 | PD5 — GPIO / peripheral function |
| Pino 51 | PD6 — GPIO / peripheral function |
| Pino 52 | PD7 — GPIO / peripheral function |
| Pino 53 | PD8 — GPIO / peripheral function |
| Pino 54 | PD9 — GPIO / peripheral function |
| Pino 55 | NRST — Reset input (active low) |
| Pino 56 | TDI — JTAG Test Data In |
| Pino 57 | TMS — JTAG Test Mode Select |
| Pino 58 | TCK — JTAG Test Clock |
| Pino 59 | TDO — JTAG Test Data Out |
| Pino 60 | VDDIO — I/O supply voltage |
| Pino 61 | GND — Ground |
| Pino 62 | XIN — Crystal oscillator input (3-20 MHz) |
| Pino 63 | XOUT — Crystal oscillator output |
| Pino 64 | VDDIO — I/O supply voltage |
| Pino 65 | EP — Exposed pad - thermal and ground, must be soldered to PCB ground plane |
Aplicações típicas
ATSAMG55J19B-MUT é adequado para 7 aplicaçãos: Bluetooth / USB Audio Headsets, Portable Speakers and Sound Bars, Hearing Aids and Personal Audio Amplifiers, Voice over IP Peripherals and USB Headsets, Industrial Audio Front-Ends, Low-Power IoT Audio Edge Nodes, USB Audio Interfaces and DACs.
Bluetooth / USB Audio Headsets
The ATSAMG55J19B-MUT is purpose-built for low-power wireless audio headsets. Its Cortex-M4 with single-precision FPU executes audio DSP (FIR filters, biquad EQ, SBC / AAC decoding) at high throughput, and the 176 KB SRAM holds multiple audio buffers (e.g. 8 kHz mic capture plus 44.1 kHz playback) without external memory. The integrated I2S / SSC controller connects directly to a Bluetooth SoC's PCM/I2S port, while the on-chip USB 2.0 Full-Speed transceiver supports wired USB headsets. Compared with Cortex-M0/M3 designs, the SAM G55 finishes DSP faster and returns to Sleep more quickly, lowering total system energy per audio frame.
Recomendado
Portable Speakers and Sound Bars
Portable speakers and sound bars benefit from the ATSAMG55J19B-MUT's combination of DSP headroom, audio peripherals, and low-power modes. The Cortex-M4 with FPU runs speaker-compensation algorithms (dynamic bass boost, virtual surround) while the I2S/SSC feeds a Class-D amplifier PWM stage. At 120 MHz the device executes a full 8-band parametric EQ and limiter pipeline at <10% CPU load, leaving bandwidth for user-interface and wireless-streaming tasks. Backup mode with RTC retention reduces idle current during standby to single-digit microamps, extending battery life between charge cycles.
Recomendado
Hearing Aids and Personal Audio Amplifiers
The ATSAMG55J19B-MUT's ultra-low-power architecture suits hearing aids, where every microwatt of DSP energy matters. The Cortex-M4 with FPU runs noise-reduction, feedback-cancellation, and multiband compression filters efficiently, while Sleep and Deep-Sleep modes let the chip idle between audio frames. The 176 KB SRAM supports ring-buffer audio with low latency, and the integrated 12-bit ADC and I2S ports handle microphone and receiver chains directly. Industrial temperature grade (-40 C to +85 C) is sufficient for body-worn applications.
Recomendado
Voice over IP Peripherals and USB Headsets
VoIP peripherals and USB headsets use the ATSAMG55J19B-MUT to handle acoustic-echo-cancellation, noise-suppression, and duplex audio routing on-chip. The on-chip USB 2.0 Full-Speed Device with transceiver enumerates as a USB audio class device without an external PHY, reducing BOM cost. The 120 MHz Cortex-M4 with FPU processes AEC and NS algorithms in real time with margin, and the 176 KB SRAM holds echo-reference and voice buffers. Industrial temperature grade supports desk-phone and conference-room hardware environments.
Recomendado
Industrial Audio Front-Ends
Industrial audio front-ends (acoustic-monitoring, condition-monitoring, smart speakers in factories) benefit from the ATSAMG55J19B-MUT's industrial temperature range and DSP throughput. The Cortex-M4 with FPU runs FFT-based acoustic analysis (machine-health monitoring, anomaly detection) at audio sample rates, and the SAM G55's low-power modes suit always-on edge deployments. GPIO count (up to 47) supports multiple microphone arrays and actuator interfaces, while the integrated USB enables field firmware updates and diagnostics.
Recomendado
Low-Power IoT Audio Edge Nodes
The ATSAMG55J19B-MUT fits low-power IoT audio edge nodes (smart-home voice capture, doorbell intercoms, voice-controlled appliances) where it runs keyword-spotting and beamforming DSP at the edge. The Cortex-M4 with FPU accelerates MFCC / neural-network feature extraction, and the 176 KB SRAM supports audio ring buffers for edge analytics. The chip's multiple low-power modes let it spend most of its time in Sleep, waking only on voice activity, which is critical for battery-powered or energy-harvesting nodes.
Recomendado
USB Audio Interfaces and DACs
USB audio interfaces, headphone DACs, and USB-to-I2S bridges can use the ATSAMG55J19B-MUT as the control and DSP core. The on-chip USB 2.0 Full-Speed Device handles audio-class enumeration; the I2S / SSC feeds an external DAC; and the Cortex-M4 with FPU implements volume control, mute, sample-rate conversion, and oversampling filters. With 512 KB Flash there is headroom for USB audio class 1.0/2.0 stacks, while the 176 KB SRAM holds playback buffers and DSP state. Industrial temperature grade supports studio equipment environments.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAMG55J19B-MUT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAMG55J19B-MU | ATSAMG55J19A-MUT | ATSAMG55J19A-MU | ATSAMG55J19B-AUT | ATSAMG55J19A-AUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-QFN MRLB (7.5x7.5 mm) | 64-QFN MRLB (7.5x7.5 mm) - same | 64-QFN MRLB (7.5x7.5 mm) - same | 64-QFN MRLB (7.5x7.5 mm) - same | 64-LQFP - different footprint | 64-LQFP - different footprint |
| Core | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU |
| Maximum CPU Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 176 KB | 176 KB | 176 KB | 176 KB | 176 KB | 176 KB |
| Silicon Revision | B | B | A | A | B | A |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Supply 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 | 1.62 V to 3.6 V |
| USB 2.0 FS | Yes (on-chip transceiver) | Yes (on-chip transceiver) | Yes (on-chip transceiver) | Yes (on-chip transceiver) | Yes (on-chip transceiver) | Yes (on-chip transceiver) |
Principais diferenciais
- Audio-optimized Cortex-M4 with FPU and integrated audio peripherals (vs Generic Cortex-M4 MCU without FPU)
- Largest on-chip SRAM in SAM G55 family (176 KB) (vs Cortex-M0+ MCUs in same price tier)
- On-chip USB 2.0 Full-Speed transceiver eliminates external PHY (vs Cortex-M MCUs without USB)
Notas de projeto
The 64-QFN MRLB package has an exposed thermal pad (EP) that must be soldered to a continuous ground plane on the PCB. Use a 7.5x7.5 mm land pattern with at least 0.5 mm thermal via array (0.3 mm vias, 1 mm pitch) underneath the EP to provide low-impedance thermal and electrical return. Insufficient EP soldering raises junction temperature and degrades USB signal integrity. Place four 100 nF decoupling capacitors as close as possible to the four VDDIO pins and one bulk 4.7 uF within 5 mm.
The ATSAMG55J19B-MUT integrates a core voltage regulator that derives VDDCORE from VDDIO, so only a single 1.62 V to 3.6 V external supply is required. For low-noise analog peripherals (ADC, audio), add a ferrite bead or pi-filter between the digital VDDIO rail and the analog AVSS-supplied pins, and provide a clean 3.3 V LDO with <30 uVrms noise for AVCC. Backup mode with RTC retention reduces quiescent current to single-digit microamps; the VDDIO rail must remain present for RTC to function.
Do not leave the NRST pin floating - tie it to VDDIO through a 10 kohm pull-up and a 100 nF capacitor to ground for a clean POR behavior. Unused GPIO pins must be configured as inputs with internal pull-ups enabled, or as outputs driving a defined level, to prevent spurious interrupts and extra current draw. The XIN/XOUT pins require a 3-20 MHz crystal or ceramic resonator with proper load capacitors per the datasheet's Crystal Oscillator Characteristics table; incorrect loading will cause start-up failure.
For USB 2.0 Full-Speed signals (D+, D-), route the differential pair with 90-ohm differential impedance, length-matched within 2 mm, and keep the pair away from switching regulator nodes. The on-chip USB transceiver requires a 1.5 kohm pull-up on D+ (or D- for low-speed) selected by software to enumerate as Full-Speed. The I2S / SSC audio bus signals should be length-matched within 5 mm and series-terminated with 33 ohm if the cable or trace exceeds 50 mm to avoid ringing at 3.072 MHz MCLK harmonics.
Informações de conformidade
RoHS and REACH compliant per Microchip product page. Lead-free and halogen-free packaging. Tape-and-reel packaging qualified to JEDEC J-STD-020 MSL3 at 260 C peak reflow. Not AEC-Q100 qualified - this is a commercial/industrial grade part.
