ATSAM4N16BA-MU - 100MHz Cortex-M4 MCU, 1MB Flash | Microchip
料号： ATSAM4N16BA-MU ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.74 | $5.74 |
| 10 | $5.45 | $54.50 |
| 100 | $5.1 | $510.00 |
| 500 | $4.75 | $2,375.00 |
| 1,000 | $4.45 | $4,450.00 |
ATSAM4N16BA-MU 概述
A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, non-volatile program memory, RAM, and peripherals such as timers, serial interfaces, and analog converters. Within the power-management hierarchy of embedded systems, MCUs sit at the application-control layer, executing firmware that coordinates sensors, actuators, and communication. The SAM4N family belongs to Microchip (formerly Atmel) ARM-based SAM product line, positioned as a cost-reduced migration path from the SAM4S series.
Key features of the ATSAM4N16BA include the ARM Cortex-M4 core with DSP instructions and the Thumb-2 instruction set, a Memory Protection Unit (MPU), and industrial temperature operation from a 1.62 V to 3.6 V supply. The device is specified as a GREEN, MRL A package for industrial applications per distributor listings.
Architecturally, the Cortex-M4 core executes Thumb-2 code with hardware DSP extensions, and the MPU supports functional-safety-oriented memory partitioning. The 1 MB single-cycle Flash array and 80 KB SRAM provide headroom for protocol stacks and data logging without external memory. Supply operation at 2.5 V or 3.3 V rails simplifies system power design.
Typical applications include industrial automation nodes, consumer and building-control systems, and cost-sensitive control panels where the SAM4N offers SAM4S-class performance at a reduced bill-of-materials cost. Pin-to-pin compatibility with SAM3N, SAM3S, SAM4S, and SAM7S devices enables board reuse across performance tiers.
When designing, budget Flash margin for over-the-air or field updates, and verify peripheral-set differences against the SAM4S before direct code migration, since SAM4N omits some SAM4S peripherals as part of its cost reduction.
This page synthesizes verified distributor pricing, pin-compatible alternatives across the Microchip SAM portfolio, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： ATSAM4N16BA-MU ——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： ATSAM4N16BA-MU （相同外形与封装尺寸） ——差异在于 RoHS Status, Maximum Clock Frequency, Operating Temperature, Core Processor, Package.
快速对比工具——选择替代料号进行并排对比：
ATSAM4N8BA-MU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.76 / 个
查看数据手册 →ATSAM4S16BA-MU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.15 / 个
查看数据手册 →ATSAM3N4BA-MU
✅ 直接替换✓ 有现货
$3.48 / 个
查看数据手册 →ATSAM3S8BA-MUR
✅ 直接替换✓ 有现货
$5.15 / 个
查看数据手册 →ATSAM4N16BA-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4N16BA-MU 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 |
| Program Memory Size | 1 MB (1M x 8) FLASH |
| RAM Size | 80 KB (80K x 8) |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Instruction Set | Thumb-2, DSP instructions |
| Memory Protection Unit | Yes (MPU) |
| 封装 | 64-QFN (9x9 mm), Exposed Pad |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial) |
| Pin-to-Pin Compatibility | SAM3N, SAM3S, SAM4S (64-pin), SAM7S (64-pin) |
| Series | SAM4N |
| Package Green Status | GREEN, MRL A |
| RoHS 状态 | Compliant (GREEN package) |
ATSAM4N16BA-MU green, mrl a 引脚配置指南
ATSAM4N16BA-MU（green, mrl a 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： ATSAM4N16BA-MU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4N16BA-MU 适用于 6 应用s: Industrial Automation Nodes, Building Control and HVAC Panels, Sensor Data Acquisition Systems, Motor Control Boards, Smart Metering and Energy Monitoring, Legacy Migration and Supply-Chain Consolidation.
Industrial Automation Nodes
The ATSAM4N16BA-MU fits industrial automation nodes where deterministic control, fieldbus interfacing, and moderate data logging converge. Its 100 MHz ARM Cortex-M4 core with DSP instructions accelerates PID control loops and digital filtering, while 1 MB of Flash stores protocol stacks such as Modbus without external memory. The Memory Protection Unit isolates critical control code from communication tasks, improving robustness in 24/7 operation. Per Microchip positioning, SAM4N is the reduced-BOM-cost path from SAM4S, so deploying it across hundreds of node PCBs cuts unit cost measurably. Running from a 3.3 V industrial rail at 1.62 V to 3.6 V tolerance, it withstands supply variation typical of factory wiring, and the 64-QFN exposed-pad package supports reliable thermal grounding on multi-layer industrial PCBs.
推荐
Building Control and HVAC Panels
Building-control panels require a microcontroller that combines enough compute headroom for control algorithms with long-term cost efficiency, and the ATSAM4N16BA-MU delivers both. The 100 MHz Cortex-M4 handles sensor aggregation, thermostat logic, and display refresh concurrently, while 80 KB of SRAM buffers schedules and network frames. Its 1.62 V to 3.6 V supply range tolerates the brownouts common in building wiring, and the industrial temperature grade suits rooftop and mechanical-room environments. Because SAM4N is pin-to-pin compatible with SAM3S, SAM3N, and SAM4S devices, panel OEMs can reuse one PCB layout across price tiers, swapping MCUs as feature requirements change. The 64-pin QFN (9x9 mm) keeps board area compact for wall-mounted enclosures.
推荐
Sensor Data Acquisition Systems
In distributed data-acquisition systems, the ATSAM4N16BA-MU serves as the local processing and buffering engine for sensor arrays. The Cortex-M4's DSP instructions execute oversampling, decimation, and FIR filtering in real time, and the 1 MB Flash retains calibration tables and logging firmware. Sampling for such systems typically concentrates analog front-end work in companion ADCs, with the MCU handling digital conditioning; its MPU allows partitioning of acquisition code from communication code for improved fault containment. Operation at 1.62 V to 3.6 V aligns directly with 3.3 V sensor rails, simplifying level-shift design. The 64-QFN exposed pad provides a low-impedance ground reference that helps preserve signal integrity for the MCU's digital I/O between converter and communication peripherals.
推荐
Motor Control Boards
The ATSAM4N16BA-MU is well suited to low- and mid-power motor-control boards, where its 100 MHz Cortex-M4 with hardware DSP executes Clarke/Park transforms and current-loop PI controllers with deterministic cycle times. The Thumb-2 instruction set keeps interrupt latency predictable, and 1 MB of Flash holds field-oriented-control firmware plus diagnostics and fault logs. Running from a 3.3 V rail with 1.62 V to 3.6 V tolerance, the MCU interfaces cleanly with gate-driver and gate-driver-adjacent logic. Because SAM4N is the cost-reduced derivative of SAM4S, motor-control OEMs can benchmark SAM4S designs and drop to SAM4N when the trimmed peripheral set suffices, reusing the same 64-pin QFN PCB footprint and lowering per-unit cost at volume production.
推荐
Smart Metering and Energy Monitoring
Smart metering platforms benefit from the ATSAM4N16BA-MU's combination of DSP capability, memory, and migration-friendly packaging. DSP instructions support RMS computation, harmonic analysis, and digital filtering of current/voltage samples, while 1 MB Flash stores tariff tables, logs, and secure firmware-update images with headroom to spare. The MPU supports partitioning of metrology code from communication stacks, a common architectural requirement in metering firmware. Pin-to-pin compatibility with SAM3S and SAM4S lets meter manufacturers qualify one PCB across product variants, using SAM4N where BOM cost targets are tightest. The GREEN, MRL A package status and industrial temperature operation align with utility-grade environmental and regulatory requirements for deployed metering hardware.
推荐
Legacy Migration and Supply-Chain Consolidation
Many installed designs use the Atmel SAM7S (ARM7TDMI) or SAM3N (Cortex-M3) families, and the ATSAM4N16BA-MU is Microchip's designated migration target for those sockets. According to the Microchip product page, the SAM4N is pin-to-pin compatible with SAM3N, SAM3S, SAM7S (64-pin), and SAM4S (64-pin) devices, so legacy PCBs accept the ATSAM4N16BA-MU without layout change while gaining Cortex-M4 performance, DSP instructions, and 1 MB Flash. For manufacturers facing end-of-life pressure on older parts, consolidating multiple legacy SKUs onto one SAM4N component simplifies procurement, firmware maintenance, and second-sourcing strategy. Board-level compatibility is preserved, but firmware should be recompiled and peripheral usage audited per the SAM4N datasheet's peripheral comparison.
推荐
推荐产品汇总
工程参考数据： ATSAM4N16BA-MU ——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-MU | ATSAM4S16BA-MU | ATSAM3N4BA-MU | ATSAM4N16BA-AU |
|---|---|---|---|---|---|
| Package | 64-QFN (9x9) EP | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-QFN (9x9) - same | 64-LQFP - different footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 1 MB | 512 KB | 1 MB | 512 KB | 1 MB |
| 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 |
| Peripheral Set | SAM4N cost-reduced set | Same SAM4N set | SAM4S superset (more peripherals) | SAM3N reduced set | Same SAM4N set |
关键差异点
- Lowest-cost 1 MB Flash option in the pin-compatible 64-QFN SAM socket （对比 ATSAM4S16BA-MU)
- Double the Flash of the SAM4N entry variant （对比 ATSAM4N8BA-MU)
- Cortex-M4 with DSP instructions versus Cortex-M3 alternatives （对比 ATSAM3N4BA-MU)
设计说明
The 64-QFN (9x9 mm) exposed-pad package requires a dedicated thermal/electrical pad on the PCB. Follow the Microchip recommended footprint with an array of thermal vias (typically 5x5 or similar per the datasheet land-pattern drawing) connecting the exposed pad to internal ground planes. Insufficient solder coverage under the QFN is a leading cause of intermittent ground faults and poor thermal performance; specify an adequate stencil aperture design per IPC guidelines and inspect via X-ray for production builds.
Decouple each VDD/VDDIO pin pair with 100 nF ceramic capacitors placed within 2 mm of the pins, plus one bulk 4.7 uF to 10 uF capacitor per supply domain. The device accepts 1.62 V to 3.6 V, but performance and Flash timing are specified at nominal 2.5 V/3.3 V; verify your worst-case rail droop against the datasheet operating conditions. If using a buck converter upstream, confirm its output ripple leaves margin above 1.62 V under brownout conditions.
Migration from SAM4S or SAM3S is board-level compatible but not code-level identical: the SAM4N trims the peripheral set as a cost measure, so drivers referencing removed peripherals will fail to build. Recompile with the SAM4N device pack in Microchip's MPLAB/Start toolchain and audit peripheral usage against the SAM4N datasheet register map before prototype spin. Also verify pin-multiplex configurations, since default mux assignments can differ between SAM family generations.
合规信息
Mouser lists the part as GREEN, MRL A package; GREEN status per Microchip convention indicates RoHS-compliant, lead-free, halogen-free packaging. REACH and conflict-minerals status not stated in verified data.
