ATSAM4S4BA-AUR - 120MHz Cortex-M4 256KB MCU | Microchip (Tape & Reel)
料号： ATSAM4S4BA-AUR ✓ 量产中ATSAM4S4BA-AUR 概述
A microcontroller is a programmable system-on-chip that integrates a processor core, nonvolatile program memory, volatile working memory, and peripherals such as serial interfaces, timers, and analog or digital I/O. The ATSAM4S4BA belongs to Microchip's SAM4S family, placing it in the embedded-processing hierarchy of ARM Cortex-M4 MCU, 32-bit microcontroller, embedded controller, and semiconductor.
The verified feature set includes an ARM Cortex-M4 processor operating up to 120 MHz, a Memory Protection Unit, DSP instructions, and the Thumb-2 instruction set. Its 256 KB Flash provides program storage, while 64 KB of SRAM supports data and execution. The Flash is described as embedded and ECC-enabled, with security and lock bits. These characteristics support firmware-heavy control, signal processing, communications, and general industrial applications.
SAM4S devices also feature a dual-bank Flash architecture according to the Microchip product result. Dual-bank support can improve field-update flexibility by permitting organized flash-management strategies, but project engineers must follow the manufacturer's programming and bootloader procedures rather than assume unrestricted simultaneous execution.
Typical uses include industrial automation controllers, connected embedded equipment, motor and motion-control systems, industrial communications, and compact data-acquisition platforms. The 120 MHz Cortex-M4 core and DSP capability are particularly useful when control-loop timing and fixed-point signal processing must coexist with communications firmware.
Design planning should begin with the exact 64-pin LQFP footprint, supported power architecture, clock configuration, and peripheral pin multiplexing. Because the provided web results do not expose a complete pin table or individual I/O specifications, those details must be confirmed in the manufacturer datasheet before PCB routing or firmware resource assignment.
This page consolidates verified distributor specifications, package information, sourcing links, and design-oriented guidance. It also separates confirmed data from unavailable parameters, allowing engineers to assess the ATSAM4S4BA-AUR quickly while preserving traceability to the manufacturer and distributor records retrieved on 2026-10-23.
直接替换替代料： ATSAM4S4BA-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： ATSAM4S4BA-AUR （相同外形与封装尺寸） ——差异在于 Package, Architecture, Instruction Set, Temperature Grade.
ATSAM4S4BA-UU
✅ 直接替换联系询价
查看数据手册 →ATSAM4S4BA-AN
✅ 直接替换联系询价
查看数据手册 →ATSAM4S4B-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4S4B-AA
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4S4BAB-AU
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4S4BA-AUR 最大额定值与电气特性
| Product Type | 32-bit ARM Cortex-M4 microcontroller |
| Maximum Processor Frequency | 120 MHz |
| Processor Core | Arm Cortex-M4 |
| Instruction Set | Thumb-2 |
| DSP Support | DSP instructions |
| Memory Protection Unit | Yes |
| Embedded Flash Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Flash ECC | Embedded ECC |
| Flash Security | Security bit and lock bits |
| Flash Architecture | Dual-bank Flash |
| Supply Reference | 1.2 V and 3.3 V |
| 封装 | 64-pin LQFP, 10 x 10 mm |
| 安装类型 | Surface mount |
| Series | SAM4S |
| Architecture | 32-bit RISC |
ATSAM4S4BA-AUR 64-pin lqfp, 10 x 10 mm 引脚配置指南
ATSAM4S4BA-AUR（64-pin lqfp, 10 x 10 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： ATSAM4S4BA-AUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4S4BA-AUR 适用于 6 应用s: Industrial Automation Controller, Motor and Motion Control, Industrial Communications Gateway, Data Acquisition and Sensor Hub, Connected Embedded Equipment, Digital Signal Processing Controller.
Industrial Automation Controller
The ATSAM4S4BA-AUR fits an industrial automation controller that must combine deterministic control with communications and local data handling. Its Arm Cortex-M4 core runs up to 120 MHz, while DSP instructions support fixed-point signal-processing tasks and the MPU provides hardware-assisted memory isolation. The 256 KB embedded Flash and 64 KB SRAM provide room for control firmware, parameter tables, diagnostics, and communication stacks. A typical implementation places the MCU between field I/O and an industrial network interface, using timer-based sequencing for actuators and inputs. The engineering trade-off is that the supplied data does not specify the exact temperature grade or peripheral mix, so rugged industrial deployment still requires orderable-part and qualification review.
推荐
Motor and Motion Control
The ATSAM4S4BA-AUR is appropriate for compact motor-control firmware because its Cortex-M4 processor reaches 120 MHz and includes DSP instructions. Those capabilities can support current or speed-loop calculations, PWM sequencing, and supervisory logic within one embedded controller. The 64 KB SRAM allows working buffers and state variables to remain close to the processor, while 256 KB Flash accommodates algorithms and parameter storage. In a motor-control design, the MCU would issue timing references to gate drivers and process feedback through suitable analog and digital interfaces. Exact timer channels, analog limits, and pin assignments must be verified because they are not present in the supplied snippets.
推荐
Industrial Communications Gateway
The ATSAM4S4BA-AUR can serve as the control processor in an industrial communications gateway because its 120 MHz Cortex-M4 core provides headroom for protocol processing alongside local supervisory tasks. The verified 256 KB Flash and 64 KB SRAM are useful for protocol stacks, diagnostics, and buffered traffic, while dual-bank Flash supports organized firmware-maintenance strategies when used according to Microchip's procedures. A practical design could bridge a local sensor bus to Ethernet or a serial uplink, with the MCU validating frames and controlling status indicators. The verified package is a 64-pin LQFP, but physical isolation strategy, transceiver requirements, and exact baud-rate peripherals must be established from the full datasheet.
推荐
Data Acquisition and Sensor Hub
The ATSAM4S4BA-AUR fits a sensor hub that must sample, filter, and package measurements while retaining network or local-logging functions. Its Cortex-M4 core at up to 120 MHz supports DSP instructions useful for filtering and fixed-point transforms, while 64 KB SRAM provides room for sampled data and control state. The 256 KB Flash can hold firmware, calibration constants, and protocol code. In a typical system, analog front ends feed the MCU's verified-to-be-confirmed conversion and timer resources before a communications module transports results. Exact ADC performance, sample-rate limits, channel count, and electrical characteristics are not included in the supplied web data, so acquisition accuracy cannot be finalized from these records alone.
推荐
Connected Embedded Equipment
The ATSAM4S4BA-AUR is useful in connected embedded equipment where one MCU must manage local control, user-facing logic, and a network protocol. The verified 120 MHz Cortex-M4 core and 256 KB Flash provide a capable platform for protocol stacks and application logic, while 64 KB SRAM handles packet buffers and working state. A practical implementation could supervise relays, read local inputs, update a status interface, and forward telemetry through Ethernet. The MPU can separate protected code or data regions when the architecture benefits from isolation. However, cryptographic resources, exact peripheral mix, boot behavior, and package-level connectivity are not specified in the supplied snippets and must be reviewed before security-sensitive deployment.
推荐
Digital Signal Processing Controller
The ATSAM4S4BA-AUR can serve as a dedicated DSP controller because the Arm Cortex-M4 core operates up to 120 MHz and explicitly supports DSP instructions. This combination is suited to fixed-point filtering, control-law evaluation, and signal transformations that must run alongside embedded supervisory logic. The device's 256 KB Flash provides program and coefficient storage, while 64 KB SRAM supports sample buffers and intermediate state. In an implementation, the MCU could process sensor or communications data, update control outputs, and report operating status. The supplied results do not quantify accelerator performance, cache behavior, or analog front-end limits, so actual signal-chain bandwidth must be established through datasheet review and bench validation.
推荐
推荐产品汇总
工程参考数据： ATSAM4S4BA-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 | ATSAM4S4BA-UU | ATSAM4S4BA-AN | ATSAM4S4B-AU | ATSAM4S4B-AA | ATSAM4S4BAB-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) | 64-LQFP (10x10) | 64-LQFP (10x10) | 64-LQFP (10x10) | 64-LQFP (10x10) |
关键差异点
- High-performance Cortex-M4 platform （对比 ATSAM4S4BA-UU)
- Embedded memory and protection features （对比 ATSAM4S4BA-AN)
- Specified 64-LQFP package （对比 ATSAM4S4B-AA)
- Broad sourcing visibility （对比 ATSAM4S4B-AU)
设计说明
Use the manufacturer's recommended decoupling topology and voltage rails before assigning external components. The verified distributor records mention 1.2 V and 3.3 V references, while the Microchip SAM4S4B family result specifies a 1.62 V to 3.6 V supply. Treat these as distinct kinds of information, not interchangeable operating limits. Place required bulk and high-frequency capacitors at the pins identified in the datasheet, keep return paths short, and verify startup, voltage tolerance, and power-sequencing requirements for every populated rail.
The confirmed mechanical format is a 64-pin LQFP with a 10 x 10 mm body. Before releasing the layout, verify the exact land pattern, pin-1 orientation, lead pitch, courtyard, solder mask, and paste stencil against the official package drawing. Also inspect whether thermal-pad or exposed-pad treatment is required; the supplied snippets do not resolve that detail. Incorrect interpretation of a package-suffix drawing can shift every pad even when the component appears to match by name, so package-specific review is mandatory.
At the verified maximum clock frequency of 120 MHz, route clocks and high-speed interfaces as controlled-impedance signals where applicable. Keep sensitive analog inputs away from switching nodes, provide solid ground-plane continuity, and minimize stubs on memory and communication routes. The supplied results do not specify which alternate functions are available on each LQFP pin, so engineers must build the pin-assignment matrix from the manufacturer datasheet. Reserved pins and peripheral multiplexing should be fixed before placement rather than handled during firmware bring-up.
Do not treat similar SAM4S orderable codes as automatically interchangeable. The suffix may encode package, temperature, packing, or qualification information, and none of the retrieved snippets fully decode every alternative suffix. Confirm the ordering-information table, exact pinout, electrical limits, flash configuration, boot behavior, and packing for ATSAM4S4BA-AUR and any proposed replacement. Firmware may also require suffix-specific validation even when the PCB footprint appears unchanged.
合规信息
The supplied records do not explicitly state compliance or automotive qualification for ATSAM4S4BA-AUR. No compliance status was inferred from the distributor's LQFPGREENIND wording or from the New Device Entry lifecycle label.