ATSAM4N8BA-AUR - 100MHz Cortex-M4 MCU 512KB Flash | Microchip
料号： ATSAM4N8BA-AUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.78 | $1.78 |
| 10 | $1.62 | $16.20 |
| 100 | $1.45 | $145.00 |
| 500 | $1.31 | $655.00 |
| 1,000 | $1.19 | $1,190.00 |
ATSAM4N8BA-AUR 概述
A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the lowest layer of the embedded-computing hierarchy: semiconductor -> microcontroller (MCU) -> embedded system. The ARM Cortex-M4 core used here is a 32-bit RISC processor optimized for deterministic real-time control, placing the ATSAM4N8B within Microchip's SAM4N family of general-purpose flash MCUs.
Key features of the ATSAM4N8BA-AUR include 512 KB (512K x 8) of embedded flash memory for code and data storage, 64 KB of SRAM for runtime variables, and a rich peripheral set for communication: six USARTs, three SPIs, and three I2C interfaces. These serial resources make the device well suited to designs that must talk to multiple external ICs simultaneously.
Technical depth comes from the Cortex-M4 architecture, which provides single-cycle multiply-accumulate DSP instructions and fast interrupt handling, allowing the 100 MHz core to handle both control loops and moderate signal processing without an external DSP. One integrated 10-channel 1 Msps-class ADC (per Microchip product data) offloads analog-to-digital conversion from external components.
Typical applications include industrial automation nodes, motor control and sensor-hub boards, consumer appliance controllers, and multi-bus communication gateways that exploit the six USARTs and three SPI ports.
A key design consideration is the industrial temperature rating (-40C to +85C per distributor data): confirm your worst-case ambient and self-heating stay within this window, and verify supply requirements in the manufacturer datasheet before finalizing power-tree design.
This page synthesizes distributor pricing, drop-in family alternatives, comparison tables, and practical design notes not found in the standard manufacturer datasheet, providing engineers with a decision-ready product profile.
直接替换替代料： ATSAM4N8BA-AUR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAM4N8BA-AUR （相同外形与封装尺寸） ——差异在于 Package, Packaging, RoHS Status, SRAM Size, Series.
快速对比工具——选择替代料号进行并排对比：
ATSAM4N8BA-AU
✅ 直接替换✓ 有现货
$3.75 / 个
查看数据手册 →ATSAM4N16BA-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4N8AA-AUR
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4N16CA-CFUR
✅ 直接替换✓ 有现货
$4.95 / 个
查看数据手册 →ATSAM4N8BA-AUR 最大额定值与电气特性
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-Bit |
| 最大时钟频率 | 100 MHz |
| Flash Memory Size | 512 KB (512K x 8) |
| SRAM Size | 64 KB |
| Number of USARTs | 6 |
| Number of SPI Interfaces | 3 |
| Number of I2C Interfaces | 3 |
| ADC Channels | 10 channels, 1 ADC |
| 封装 | 64-LQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| Program Memory Type | FLASH |
| RoHS 状态 | Compliant (GREEN, per Mouser listing) |
| Packaging | Tape & Reel (MRL, per Mouser listing) |
ATSAM4N8BA-AUR 64-lqfp (10x10 mm) 引脚配置指南
ATSAM4N8BA-AUR（64-lqfp (10x10 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATSAM4N8BA-AUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4N8BA-AUR 适用于 6 应用s: Industrial Automation Nodes, Motor Control Systems, Multi-Bus Communication Gateways, Sensor Hubs and Data Loggers, Consumer Appliance Controllers, Test and Measurement Instruments.
Industrial Automation Nodes
The ATSAM4N8BA-AUR fits industrial automation nodes because its 100 MHz Cortex-M4 core and industrial -40C to +85C rating align with factory-floor environmental and real-time requirements. The six USARTs allow simultaneous Modbus RTU links to drives and sensors, while three SPI and three I2C interfaces connect local ADCs, EEPROMs, and displays without bus contention. In a typical node, the MCU polls field sensors over I2C at fixed intervals, processes control logic using the Cortex-M4 DSP-capable core, and reports over a USART-based fieldbus. The 512 KB flash accommodates protocol stacks plus OTA-style firmware slots, and the 64-pin LQFP offers enough GPIO for relays and status LEDs without port expanders.
推荐
Motor Control Systems
For motor control, the ATSAM4N8BA-AUR offers the 100 MHz deterministic Cortex-M4 execution and single-cycle MAC instructions needed for field-oriented control (FOC) inner loops. The integrated 10-channel ADC (1 Msps class per Microchip data) samples phase currents and bus voltage with modest external signal conditioning, while timers generate complementary PWM for inverter bridges. The 64 KB SRAM holds control-state variables, PI tuning tables, and commutation look-up tables with headroom for a lightweight RTOS. Its 512 KB flash stores parameter sets, fault logs, and bootloader code for field updates. The 64-LQFP footprint provides adequate GPIO for gate-driver enables, encoder inputs, and protective interlocks in a compact single-chip solution.
推荐
Multi-Bus Communication Gateways
The ATSAM4N8BA-AUR is a natural protocol gateway because Microchip equipped it with six USARTs, three SPIs, and three I2C interfaces - eleven independent serial engines on one chip. A gateway can, for example, bridge RS-485 field devices to a USB or Ethernet-attached upstream controller while simultaneously serving local I2C sensor buses, all without software bit-banging that would steal CPU cycles. The 100 MHz Cortex-M4 core handles framing, CRC checks, and buffering in the 64 KB SRAM, with the DMA-capable peripherals reducing interrupt load. The 512 KB flash leaves ample room for multiple protocol stacks. Industrial temperature rating makes the gateway deployable in unconditioned electrical cabinets.
推荐
Sensor Hubs and Data Loggers
As a sensor hub or data logger, the ATSAM4N8BA-AUR aggregates analog and digital sensor streams through its 10-channel ADC and triple I2C/SPI interfaces. The 1 Msps-class ADC captures fast analog signals such as vibration or pressure transients, while digital sensors (accelerometers, humidity, temperature) attach to the I2C buses. The 64 KB SRAM buffers burst data between storage writes, and the 512 KB flash retains configuration, calibration tables, and event logs. At 100 MHz, the Cortex-M4 applies filtering or threshold detection locally, transmitting only summarized results over a USART link, which cuts power and bandwidth. The industrial temperature range suits outdoor and factory loggers alike.
推荐
Consumer Appliance Controllers
Consumer appliance boards - coffee machines, air conditioners, dishwashers - benefit from the ATSAM4N8BA-AUR's balance of cost and integration. At roughly $1.78 unit pricing (LCSC, as of 2026-09-20), it delivers a 100 MHz 32-bit core that outperforms legacy 8-bit controllers while keeping BOM count low: the 10-channel ADC reads touch panels, NTC thermistors, and current shunts directly, and USARTs drive displays or Wi-Fi modules. The GREEN, RoHS-compliant LQFP-64 package supports standard lead-free reflow assembly used in high-volume consumer manufacturing. Its 512 KB flash supports UI assets, multiple language packs, and firmware update banks, extending product life through post-deployment feature upgrades without hardware revision.
推荐
Test and Measurement Instruments
In handheld meters, dongle analyzers, and bench accessories, the ATSAM4N8BA-AUR provides the acquisition and interface mix these products need: the 10-channel 1 Msps-class ADC digitizes measurement front-ends, the Cortex-M4 core applies calibration and DSP filtering at 100 MHz, and multiple USART/SPI ports drive front-panel displays, external memory, and PC connectivity. The 64 KB SRAM supports waveform capture buffers, while 512 KB flash stores calibration constants, unit firmware, and menu assets. The 64-LQFP (10x10 mm) keeps the PCB small enough for portable enclosures. Industrial -40C to +85C rating also allows these instruments to operate reliably in unconditioned field environments such as substations and job sites.
推荐
推荐产品汇总
工程参考数据： ATSAM4N8BA-AUR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAM4N8BA-AU | ATSAM4N16BA-AU | ATSAM4N8AA-AUR | ATSAM4N16CA-CFUR |
|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | LQFP (family variant) - verify pin-map |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Frequency | ARM Cortex-M4, 100 MHz | ARM Cortex-M4, 100 MHz | ARM Cortex-M4, 100 MHz | ARM Cortex-M4, 100 MHz | ARM Cortex-M4, 100 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- Eleven serial interfaces on one chip （对比 ATSAM4N8AA-AUR)
- Doublable flash density on the same footprint （对比 ATSAM4N16BA-AU)
- Industrial temperature and GREEN package （对比 ATSAM4N8BA-AU)
设计说明
The 64-LQFP (10x10 mm) exposes power and ground on multiple corner pins; per standard Microchip SAM4 layout guidance, place a 100 nF ceramic decoupling capacitor within 2 mm of each VDD pin pair plus one bulk 4.7-10 uF capacitor near the supply entry. Keep the analog supply domain (VDDA/VDDIO ADC routing) separated with an RC or ferrite filter so the 1 Msps-class ADC achieves its rated accuracy. Route USART/SPI traces with at least 3W spacing from switching-node nets in motor-control layouts.
Confirm the memory map when substituting family variants: code linked for the ATSAM4N8BA-AUR (512 KB flash) will not relocate automatically to ATSAM4N8AA-AUR's smaller flash, and the linker script must be updated for ATSAM4N16BA-AU's 1 MB map. Also verify the supply-voltage class and pin-multiplexing table in the specific datasheet revision - identical packages can differ in peripheral muxing between family members. Always pull errata sheets from Microchip's product page before tape-out.
Estimated: a 100 MHz Cortex-M4 in this class typically draws on the order of tens of mA active; budget the regulator accordingly and verify against the datasheet's power-consumption tables for your exact clock configuration. For battery or low-power logger designs, exploit wait/sleep modes and gate the ADC between bursts; wake latency and exit-current figures are specified in the SAM4N datasheet and should anchor the duty-cycle power estimate rather than generic assumptions.
合规信息
Mouser lists the part as 'LQFP, GREEN, IND TEMP, MRL' - GREEN denotes Microchip's RoHS-compliant, lead-free package. REACH, halogen-free, and conflict-minerals status require the latest Microchip compliance certificates.