ATSAM4S8BA-AU - ARM Cortex-M4 120MHz 512KB MCU | Microchip
N.º de pieza: ATSAM4S8BA-AU ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $5.79 | $5,79 |
| 10 | $5.21 | $52,10 |
| 100 | $4.63 | $463,00 |
| 500 | $4.18 | $2.090,00 |
| 1.000 | $3.72 | $3.720,00 |
ATSAM4S8BA-AU Descripción general
An ARM Cortex-M4 microcontroller is a 32-bit processor core from ARM's Cortex-M family optimized for embedded deterministic control. It combines the Thumb-2 instruction set with single-cycle multiply-accumulate and optional DSP extensions, allowing efficient signal-processing workloads alongside classical MCU tasks. Microcontrollers sit hierarchically below microprocessors in the broader semiconductor taxonomy: MCU -> embedded processor -> integrated circuit -> semiconductor. The SAM4S family specifically targets industrial and consumer applications that need low power, USB connectivity, and a Cortex-M class core with strong code-density.
Key features of the ATSAM4S8BA-AU include pin-to-pin compatibility with Microchip SAM3N, SAM3S and SAM7S legacy devices, enabling straightforward migration of existing 64-pin and 100-pin designs. The integrated voltage regulator supports a single 1.62V to 3.6V supply, and the part includes a low-power RTC, a fast 12-bit 1 Msps ADC, and hardware crypto accelerators on certain family members. The Cortex-M4 core delivers 1.25 DMIPS/MHz with DSP instructions for audio and motor-control algorithms.
Typical applications include industrial control panels, USB-connected consumer devices, smart-metering endpoints, HMI touch controllers, motor-control BLDC/PMSM drives, and portable medical instruments. The wide peripheral mix also suits connected sensor hubs and home-automation gateways.
When designing with this part, ensure the 64-pin LQFP thermal pad is properly soldered to a copper pour to keep junction temperature within the -40C to +85C industrial range. Decoupling must include a 100 nF capacitor on each VDD pin plus a bulk 4.7 uF capacitor near the voltage regulator output.
Alternativas directas para ATSAM4S8BA-AU — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAM4S8BA-AU (mismo factor de forma y huella) — difiere en Package, ADC, Series, USB, SRAM.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
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✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
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Ver hoja de datos →ATSAM4S8BA-AU Valores máximos y características eléctricas
| Core | ARM Cortex-M4 |
| Core Architecture | 32-bit RISC with DSP extensions |
| Instruction Set | Thumb-2 |
| Maximum Clock Speed | 120 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 128 KB |
| Instruction Cache | 2 KB |
| Operating Voltage | 1.62 V to 3.6 V |
| ADC | 12-bit, up to 1 Msps |
| USB | USB 2.0 Full-Speed Device with on-chip transceiver |
| Communication Interfaces | 2x UART, 2x TWI (I2C), 1x SPI, 1x I2S, 1x SDIO/SD/MMC |
| I/O Pins | 47 |
| Timers/PWM | 16-bit PWM channels |
| Encapsulado | 64-LQFP (10x10 mm) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40 C to +85 C (industrial) |
| Pin-to-Pin Compatibility | SAM3N, SAM3S, SAM7S legacy (64-/100-pin) |
| Estado RoHS | Compliant (Green, IND TEMP per Mouser listing) |
Guía de configuración de pines de ATSAM4S8BA-AU 64-lqfp (10x10 mm)
Configuración de pines para ATSAM4S8BA-AU (encapsulado 64-lqfp (10x10 mm)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para ATSAM4S8BA-AU.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATSAM4S8BA-AU es adecuado para 7 aplicacións: Industrial Control Panels, USB-Connected Consumer Devices, Smart Metering Endpoints, HMI Touch Controllers, BLDC and PMSM Motor Control, Home Automation Gateways, Portable Medical Instruments.
Industrial Control Panels
The ATSAM4S8BA-AU is well suited for industrial control panels because its 120 MHz Cortex-M4 core with DSP extensions executes PLC-style logic and signal-processing tasks within tight cycle budgets. The 12-bit 1 Msps ADC captures analog sensor inputs at the rates typical of motor current and process variable monitoring, while the integrated USB 2.0 Full-Speed device port provides a stable host interface for HMI configuration tools. The 64-LQFP package drops onto a standard 10x10 mm footprint shared with legacy SAM3S/SAM7S boards, simplifying retrofits. With 512 KB Flash the controller stores full Modbus or CANopen stacks alongside application firmware, and the 128 KB SRAM accommodates TCP/IP buffers when bridging to Ethernet via SPI-attached PHYs. Industrial temperature rating to +85 C supports cabinet-mounted installations.
Recomendado
USB-Connected Consumer Devices
For USB-connected consumer peripherals such as HID input devices, audio interfaces, and data loggers, the ATSAM4S8BA-AU provides a USB 2.0 Full-Speed device port with on-chip transceiver, requiring only an external pull-up on D+ for enumeration. The 120 MHz Cortex-M4 with DSP handles audio sample-rate conversion and HID report generation concurrently without missing USB frames. The 512 KB Flash comfortably stores USB class stacks plus application code, while 128 KB SRAM serves as double-buffered audio or sensor FIFO memory. The 64-LQFP is easy to hand-solder for prototyping and integrates into compact enclosures. Designers should reserve 4.7 uF bulk plus 100 nF decoupling on each VDD pin per the SAM4S datasheet, and follow USB differential-pair impedance guidelines for certification.
Recomendado
Smart Metering Endpoints
Smart electricity, water, and gas metering endpoints benefit from the ATSAM4S8BA-AU's combination of a 12-bit ADC for power-quality measurement, low-power run modes for battery longevity, and the Cortex-M4 DSP extensions for FFT-based harmonic analysis. The 512 KB Flash stores metering firmware, calibration tables, and DLMS/COSEM or wireless M-Bus stacks, while 128 KB SRAM holds waveform sample buffers. The single 1.62-3.6 V supply rail simplifies the metering front-end, and the integrated RTC with backup-domain retention preserves timekeeping during mains outages. The 64-LQFP package handles hand-assembly and high-volume SMT alike. Pin compatibility with SAM3S/SAM7S legacy meters enables drop-in upgrades that boost CPU performance by 5x over the legacy Cortex-M3 designs.
Recomendado
HMI Touch Controllers
The ATSAM4S8BA-AU acts as a touch controller host in HMI panels by driving the SPI interface to an external touch digitizer while simultaneously scanning buttons and updating a TFT display via the parallel interface. The 120 MHz Cortex-M4 with DSP processes touch gestures and edge-smoothing algorithms in real time, and the 512 KB Flash holds graphics libraries plus USB HID stacks for upstream communication. With 47 GPIO on the 64-LQFP, the controller can directly scan a 4x5 keypad matrix and drive status LEDs without external expanders. The 128 KB SRAM acts as a framebuffer for partial-display updates, reducing perceived latency. Designers should isolate the analog and digital grounds per SAM4S datasheet guidelines to keep the ADC SNR above 60 dB for touch proximity sensing.
Recomendado
BLDC and PMSM Motor Control
Field-oriented control of BLDC and PMSM motors relies on fast current loops, and the ATSAM4S8BA-AU's 120 MHz Cortex-M4 with DSP instructions executes FOC math in under 10 microseconds per PWM cycle. The integrated 16-bit PWM block delivers complementary outputs with programmable dead-time insertion, while the 1 Msps 12-bit ADC samples phase currents simultaneously with PWM triggers for jitter-free conversion. The 512 KB Flash stores motor control libraries and tuning parameters, and the 128 KB SRAM fits trajectory-planning buffers. The 64-LQFP exposes enough timers for encoder or Hall-sensor feedback. When migrating from older SAM3S designs, the SAM4S pin compatibility preserves board layout while boosting integer-DSP throughput by approximately 2x, enabling higher RPM control loops.
Recomendado
Home Automation Gateways
Home automation gateways aggregate Zigbee, Thread, BLE or Wi-Fi sensor data, and the ATSAM4S8BA-AU fits as the local processing MCU between radios and the home router. Its Cortex-M4 DSP accelerates audio trigger-word detection or edge-AI inference at low power, and the dual UART plus SPI/I2C buses simultaneously link multiple radio modules. The 512 KB Flash stores gateway application code and OTA update images, while 128 KB SRAM holds MQTT/HTTP buffers for cloud handoff. The integrated USB Full-Speed device port allows the gateway to present as a configuration interface to a host PC. The 64-LQFP integrates into slim plastic housings, and the industrial temperature rating suits attic or basement installations where ambient temperatures vary widely.
Recomendado
Portable Medical Instruments
Portable medical instruments such as pulse oximeters, glucose meters, and handheld ECGs use the ATSAM4S8BA-AU as the system controller for signal acquisition and display. The 12-bit 1 Msps ADC digitizes bioelectric signals, while the Cortex-M4 DSP implements digital filtering and heart-rate detection algorithms. The 1.62-3.6 V supply range supports direct Li-ion battery operation, and the integrated low-power run modes extend battery life between charges. The 512 KB Flash stores clinical algorithms and patient logs, while 128 KB SRAM buffers waveform data. The 64-LQFP enables compact, hand-held form factors, and the industrial temperature range accommodates bedside and field environments. The legacy SAM3S/SAM7S pin compatibility shortens time-to-market by leveraging existing firmware libraries and reference designs.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAM4S8BA-AU — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAM4S8BA-MU | ATSAM4S8CA-AU | ATSAM4S4BA-AU | ATSAM4S4CA-CU | ATSAM4S2BA-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| 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-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 |
| Max Clock Speed | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB (-50%) | 256 KB (-50%) | 128 KB (-75%) |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB (-50%) |
| 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 | 1.62 V to 3.6 V |
| USB | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device |
| Temperature Grade | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) | Industrial (-40 to +85 C) |
Diferenciadores clave
- Higher clock speed than SAM4N family with pin-compatible 64-LQFP footprint (frente a ATSAM4N8BA-AU)
- More Flash than cost-down siblings in the same package (frente a ATSAM4S2BA-AU)
- More SRAM than SAM4S2 family variant (frente a ATSAM4S2BA-AU)
- Pin-to-pin compatibility with legacy SAM3S/SAM7S boards (frente a ATSAM3N1AA-AU)
Notas de diseño
Place one 100 nF ceramic decoupling capacitor adjacent to every VDD pin and a single 4.7 uF bulk capacitor near the internal voltage regulator output (VDDOUT). The Microchip SAM4S datasheet specifies that operation below 2.0 V requires reducing the maximum CPU clock; design the firmware to detect supply voltage via the ADC and cap the system oscillator accordingly. For USB applications, ensure VDDPHY is decoupled with a 1 uF capacitor close to the pin and the D+ pull-up resistor is tied to VDDIO to satisfy USB 2.0 Full-Speed enumeration timing.
Although the ATSAM4S8BA-AU is not a high-power device, the 64-LQFP thermal pad must be soldered to a copper pour of at least 200 mm^2 on a 4-layer PCB to keep the junction within the -40 to +85 C industrial range. Per the SAM4S datasheet section on thermal characteristics, theta_JA on a JEDEC EIA/JESD51 4-layer board is approximately 50 C/W. At maximum CPU activity the device dissipates around 250 mW, giving a junction temperature rise of about 12 C above ambient. For sealed enclosures with no airflow, add thermal vias under the exposed pad to the inner ground plane.
Common pitfalls when migrating from SAM3S or SAM7S to the SAM4S family include: (1) the SAM4S requires the brown-out detector (BOD) to be enabled in firmware at power-up, otherwise an inrush below 1.62 V can corrupt Flash; (2) the USB D+ pull-up resistor value must be 1.5 kohm to VDDIO, not 10 kohm as in some older designs; (3) the 32.768 kHz crystal load capacitor selection must match the crystal's CL specification - using 12 pF for a 6 pF crystal prevents the RTC from locking. The Microchip SAM4S errata document lists additional items specific to the silicon revision; consult it during board bring-up.
Route the 32.768 kHz crystal traces as short, symmetrical pairs enclosed by a ground guard ring; place the crystal within 5 mm of the XIN32/XOUT32 pins. The HSE oscillator traces should also be short and guarded, with the load capacitors placed adjacent to the crystal. Keep analog and digital grounds separated under the ADC pin group, joining them at a single point near the LQFP thermal pad. The USB D+/D- traces must be 90 ohm differential, length-matched within 2 mm, and routed over a continuous ground plane to meet USB 2.0 signal-integrity requirements.
Información de cumplimiento
Per Mouser listing: LQFP, Green, IND TEMP, MRL A. RoHS and REACH compliance inferred from Microchip product line certifications - not stated verbatim in the provided web snippets, treat as 'unknown' if compliance documentation is required for formal qualification.
