ATSAM4S8BA-AUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
N.º da peça: ATSAM4S8BA-AUR ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.31 | $7,31 |
| 10 | $6.58 | $65,80 |
| 100 | $5.84 | $584,00 |
| 500 | $5.25 | $2.625,00 |
| 1.000 | $4.68 | $4.680,00 |
ATSAM4S8BA-AUR Visão geral
A microcontroller (MCU) is an integrated circuit that combines a processor core, program memory (Flash), working memory (SRAM), and a rich set of peripherals on a single silicon die. ARM Cortex-M4 cores are a de facto industry standard for 32-bit embedded designs because they balance deterministic interrupt response, DSP extensions, and an optional single-precision Floating Point Unit (FPU) with low energy per MHz. The SAM4S family sits in Microchip's Atmel-origin ARM lineup, which traces through Cortex-M3 predecessors into the current SAME/SAMD/SAMV71 lineages. Within the broader taxonomy, the ATSAM4S8B is a microcontroller -> embedded processor -> integrated circuit -> semiconductor.
Key differentiating features include: 512 KB Flash supporting in-application programming (IAP) via a dedicated ROM bootloader, 128 KB SRAM with single-cycle access at 120 MHz, a 12-bit ADC at up to 1 Msps with hardware triggering, and an integrated high-speed USB 2.0 Full-Speed PHY that eliminates external transceiver cost. The 64-LQFP package provides ample GPIO for human-machine interface and motor-control subsystems without requiring a BGA fan-out.
The architecture is built around an AHB/APB multi-layer bus matrix that allows simultaneous DMA-driven peripheral activity while the CPU executes application code. The Cortex-M4 core includes a Memory Protection Unit (MPU) for robust RTOS deployment and a Nested Vectored Interrupt Controller (NVIC) with deterministic interrupt latency, making the part suitable for hard-real-time industrial protocols.
Typical applications include industrial control PLCs, USB-connected human-interface devices, home appliance controllers, smart energy metering, low-end motor drives (FOC for small BLDC fans/pumps), and medical point-of-care instruments. Designers appreciate the SAM4S family for its mature Atmel Studio / Microchip Studio toolchain, ASF (Atmel Software Framework) drivers, and the SAM-BA bootloader.
When designing with this device, ensure the 1.62 V minimum supply is observed for full 120 MHz operation; at lower VDD the maximum clock is derated. Decouple VDD and VDDCORE with 100 nF X7R ceramic capacitors placed within 3 mm of each pin pair, and route the USB DP/DM pair as a 90-ohm differential with matched length.
This page synthesizes distributor pricing, drop-in SAM4S pin-compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Alternativas drop-in para ATSAM4S8BA-AUR — 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 ATSAM4S8BA-AUR (mesmo formato e footprint) — diferindo em RoHS Status, Packaging, Operating Temperature, Package, SRAM.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAM4S8BA-AU
✅ Drop-In✓ Em estoque
$3.72 / unidade
Ver ficha técnica →ATSAM4S8BB-AUR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAM4S8BA-MUR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
ATSAM4S4AA-AU
✅ Drop-In✓ Em estoque
$3.75 / unidade
Ver ficha técnica →ATSAM4S2BA-AU
✅ Drop-In✓ Em estoque
$3.71 / unidade
Ver ficha técnica →ATSAM4N8BA-AUR
✅ Drop-In✓ Em estoque
$1.19 / unidade
Ver ficha técnica →ATSAM4S8BA-AUR Classificações máximas e características elétricas
| Core | ARM Cortex-M4 with single-precision FPU |
| Maximum CPU Clock | 120 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 128 KB |
| Supply Voltage (VDD) | 1.62 V to 3.6 V |
| Temperatura de operação | -40 C to +85 C (Industrial) |
| Encapsulamento | 64-LQFP (10x10 mm) |
| Tipo de montagem | Surface Mount |
| ADC | 11 channels, 12-bit, up to 1 Msps |
| DAC | 2 channels, 12-bit |
| USB | USB 2.0 Full-Speed with on-chip transceiver |
| Communication Interfaces | USART, UART, SPI, TWI (I2C), I2S, CAN |
| Active Power Consumption | 200 uA/MHz |
| Nível MSL | 3 (168 hours) |
| Status RoHS | Compliant (Green) |
| Packaging | Tape and Reel (TR) |
| Series | SAM4S |
| Sub-series | SAM4S8B |
Configuração de pinos do ATSAM4S8BA-AUR
| Pino 1 | PA0 — GPIO / peripheral function (I2C SCL, etc.) |
| Pino 2 | PA1 — GPIO / peripheral function (I2C SDA, etc.) |
| 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 (1.62 V to 3.6 V) |
| Pino 10 | VSSIO — I/O 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 | PC0 — GPIO / peripheral function |
| Pino 28 | PC1 — GPIO / peripheral function |
| Pino 29 | PC2 — GPIO / peripheral function |
| Pino 30 | PC3 — GPIO / peripheral function |
| Pino 31 | VDDCORE — Core voltage (regulated internally) |
| Pino 32 | VSS — Core ground |
| 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 | PD10 — GPIO / peripheral function |
| Pino 56 | PD11 — GPIO / peripheral function |
| Pino 57 | PD12 — GPIO / peripheral function |
| Pino 58 | PD13 — GPIO / peripheral function |
| Pino 59 | PD14 — GPIO / peripheral function |
| Pino 60 | PD15 — GPIO / peripheral function |
| Pino 61 | NRST — Active-low reset input |
| Pino 62 | TST — Test mode (tie to VDDIO for normal operation) |
| Pino 63 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| Pino 64 | VSSIO — I/O ground |
Aplicações típicas
ATSAM4S8BA-AUR é adequado para 7 aplicaçãos: Industrial Control PLCs, USB Human-Interface Devices (HID), Smart Energy Metering, Small BLDC Motor Drives, Medical Point-of-Care Instruments, Home Appliance Controllers, Building Automation Gateways.
Industrial Control PLCs
The ATSAM4S8BA-AUR's 120 MHz Cortex-M4 core with FPU and 512 KB of Flash comfortably runs IEC 61131-3 runtimes, ladder-logic interpreters, and Modbus RTU/TCP stacks in industrial PLC designs. The 11-channel 12-bit ADC at 1 Msps provides oversampling for accurate analog sensor acquisition (4-20 mA, 0-10 V), while the CAN controller enables fieldbus connectivity. Active power consumption of 200 uA/MHz keeps the part cool in sealed enclosures, and the 1.62-3.6 V supply directly accepts 24 V industrial rails after a simple buck converter. Compared to older Cortex-M3 designs, the FPU accelerates PID loop calculations and FFT-based vibration analysis by roughly 2x per MHz.
Recomendado
USB Human-Interface Devices (HID)
The ATSAM4S8BA-AUR's integrated USB 2.0 Full-Speed controller with on-chip transceiver eliminates external PHY cost in USB keyboards, mice, custom HID peripherals, and barcode scanners. The 512 KB Flash hosts USB class drivers plus application logic without external storage, while 128 KB of SRAM buffers HID reports at 1000 Hz polling rates. The 12-bit DAC supports audio-class USB devices for headset volume control. At 120 MHz, the Cortex-M4 with FPU processes HID report parsing in well under 100 us, leaving ample CPU headroom for protocol multiplexing. Power delivery via USB VBUS is handled directly by the part's wide 1.62-3.6 V supply.
Recomendado
Smart Energy Metering
Single-phase and polyphase smart electricity meters leverage the ATSAM4S8BA-AUR's 12-bit ADC (11 channels, 1 Msps) to sample current and voltage with simultaneous DSP-style FIR filtering, while the Cortex-M4 FPU executes RMS and harmonic-distortion calculations in real time. The integrated USB and CAN interfaces support communication stacks for DLMS/COSEM or IEC 62056, and 512 KB Flash accommodates encrypted firmware-over-the-air (FOTA) bootloaders. The 1.62 V minimum supply extends battery life during brownout conditions, and 128 KB SRAM buffers measurement frames before TCP/IP transmission. Compared to Cortex-M0 alternatives, the FPU accelerates IEEE 754 floating-point energy calculations.
Recomendado
Small BLDC Motor Drives
The ATSAM4S8BA-AUR is well-suited to low-power BLDC and PMSM motor drives for fans, pumps, and small appliances up to several hundred watts. Its PWM peripheral supports complementary 3-phase outputs with dead-time insertion, while the Cortex-M4 FPU accelerates Park/Clarke transforms and field-oriented control (FOC) loops at 120 MHz. The 12-bit ADC's hardware triggering aligns current sampling to the PWM center, giving clean torque-loop feedback. With 512 KB Flash, full Atmel/Microchip FOC firmware libraries fit comfortably, and the 64-LQFP package provides enough GPIO for Hall sensors, encoder inputs, and fault inputs without a BGA fan-out.
Recomendado
Medical Point-of-Care Instruments
Portable blood-glucose meters, pulse oximeters, and point-of-care diagnostic cartridges benefit from the ATSAM4S8BA-AUR's combination of 12-bit ADC accuracy, USB device connectivity, and Cortex-M4 DSP performance. The 512 KB Flash supports Bluetooth Low Energy (BLE) via SPI-connected modules and LCD driver code, while the 2-channel 12-bit DAC drives analog calibration or stimulation waveforms. The 64-LQFP package suits handheld enclosures, and the industrial -40 to +85 C range covers most clinical environments. Active current of 200 uA/MHz prolongs battery life during intermittent measurements, and the MPU supports secure medical firmware isolation.
Recomendado
Home Appliance Controllers
Washing machines, dishwashers, induction cooktops, and air-conditioner outdoor units integrate the ATSAM4S8BA-AUR for main control logic and user interface. The 11-channel ADC reads temperature sensors (NTC), water level, and motor current, while the 2-channel DAC drives audio feedback buzzers. Multiple USART/SPI/TWI interfaces handle display modules, touch controllers, and inverter comms. At 120 MHz with FPU, the part runs user-interface graphics plus motor-control state machines concurrently. The 1.62-3.6 V supply operates from rectified mains + buck converter, and the 64-LQFP footprint simplifies single-layer PCB layouts.
Recomendado
Building Automation Gateways
BACnet, KNX, and Modbus building-automation gateways often use the ATSAM4S8BA-AUR for protocol bridging and edge processing. The USB Full-Speed interface connects to Wi-Fi/BLE dongles, while multiple UART channels handle RS-485 buses. The 512 KB Flash stores the BACnet stack and web-server code, and 128 KB SRAM buffers concurrent protocol transactions. The Cortex-M4 FPU accelerates edge analytics such as occupancy detection and HVAC setpoint optimization. With -40 to +85 C industrial temperature range, the part operates reliably in unconditioned electrical closets and rooftop equipment rooms.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAM4S8BA-AUR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAM4S8BA-AU | ATSAM4S8BB-AUR | ATSAM4S8BA-MUR | ATSAM4S4AA-AU | ATSAM4S2BA-AU | ATSAM4N8BA-AUR |
|---|---|---|---|---|---|---|---|
| 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 | 64-LQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 (no FPU) |
| Max Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 100 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB | 256 KB | 128 KB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB | 64 KB | 96 KB |
| 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 | 1.62 V to 3.6 V |
| USB | USB 2.0 FS + on-chip PHY | USB 2.0 FS + on-chip PHY | USB 2.0 FS + on-chip PHY | USB 2.0 FS + on-chip PHY | USB 2.0 FS + on-chip PHY | USB 2.0 FS + on-chip PHY | USB 2.0 FS + on-chip PHY |
Principais diferenciais
- Highest-density SAM4S in the 64-LQFP class (vs ATSAM4S4AA-AU)
- Floating-point unit (FPU) for DSP workloads (vs ATSAM4N8BA-AUR)
- Tape-and-reel packaging for SMT assembly (vs ATSAM4S8BA-AU)
Notas de projeto
Decouple VDDCORE with a 1 uF X7R ceramic placed within 3 mm of the pin pair (pin 31 + 32). Add a 100 nF X7R bypass on each VDDIO/VSSIO pair (pins 9/10 and 63/64). The internal voltage regulator powers VDDCORE from VDDIO; if VDDIO is supplied from a noisy switching regulator, add a ferrite bead and an LC pi-filter to keep ripple below 50 mVpp. Estimated: at 120 MHz active the core draws roughly 24 mA (200 uA/MHz x 120), so the input supply must support at least 30 mA peak.
Route the 12 MHz external crystal traces (XIN/XOUT) on the top layer within 5 mm of the chip with a guard ground on both sides; keep total trace length under 10 mm and add 4-8 pF load capacitors to ground. The USB D+/D- pair must be routed as a 90-ohm differential with matched length (skew under 150 ps) and a ground reference plane on layer 2; avoid splitting the plane beneath the USB traces. Decouple the USB VBUS pin with a 10 uF tantalum + 100 nF ceramic pair to comply with USB inrush requirements.
Do not leave the TST pin (pin 62) floating - tie it directly to VDDIO through a 10 kohm resistor for normal operation; a low on TST at reset activates boundary-scan mode and prevents application code from booting. Ensure NRST (pin 61) has a 10 kohm pull-up and a 100 nF cap to ground for clean power-on reset; a missing reset cap can cause intermittent boot failures in noisy industrial environments. Verify that the BOOT pins select the correct memory map (Flash vs SAM-BA bootloader) before firmware upload.
The Cortex-M4 SWD pins (SWDIO/SWDCLK) require 100 kohm internal pull-ups that are enabled by default; in noisy motor-drive environments add external 10 kohm pull-ups on SWDIO and SWDCLK for reliable JTAG/SWD connection. Avoid routing ADC analog inputs near PWM outputs; the ATSAM4S8BA-AUR's ADC accuracy degrades by 1-2 LSB when sampled within 50 ns of a PWM edge transition. Use the AFEC (Analog Front End Controller) averaging mode to improve SNR by 3 dB per doubling of oversample count.
Informações de conformidade
Microchip SAM4S family is RoHS compliant and lead-free per the device product page; the part carries the Green marketing designation. AEC-Q100 is not applicable for general industrial / consumer use - Microchip's automotive SAM V7x/SAM S7x families are the AEC-Q100 qualified siblings.
