ATSAM4S4BA-AU - 120MHz Cortex-M4 256KB MCU | Microchip
MPN： ATSAM4S4BA-AU ✓ 啟用中ATSAM4S4BA-AU 概覽
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-AU quickly while preserving traceability to the manufacturer and distributor records retrieved on 2026-10-23.
直接替換替代品，適用於 ATSAM4S4BA-AU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAM4S4BA-AU （相同外形與佔位） — 差異在於 Package, Series, Instruction Set, SRAM, Maximum Clock Frequency.
ATSAM4S4BA-UUR
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S4BA-AN
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S4B-AU
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4S4B-AA
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4S4BAB-AU
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4S4BA-AU 最大額定值與電氣特性
| 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 |
| 封裝 | 64-pin LQFP, 10 x 10 mm |
| 安裝類型 | Surface mount |
| Series | SAM4S |
| Architecture | 32-bit RISC |
ATSAM4S4BA-AU 64-pin lqfp, 10 x 10 mm 腳位配置指南
ATSAM4S4BA-AU（64-pin lqfp, 10 x 10 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAM4S4BA-AU.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAM4S4BA-AU 適用於 6 應用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-AU 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.
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Motor and Motion Control
The ATSAM4S4BA-AU 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.
推薦
Industrial Communications Gateway
The ATSAM4S4BA-AU 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.
推薦
Data Acquisition and Sensor Hub
The ATSAM4S4BA-AU 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.
推薦
Connected Embedded Equipment
The ATSAM4S4BA-AU 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.
推薦
Digital Signal Processing Controller
The ATSAM4S4BA-AU 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.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4S4BA-AU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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) |
主要差異化特點
- High-performance Cortex-M4 platform (對比ATSAM4S4BA-UU)
- Embedded memory and protection features (對比ATSAM4S4BA-AN)
- Specified 64-LQFP package (對比ATSAM4S4B-AA)
- Broad sourcing visibility (對比ATSAM4S4B-AU)
設計說明
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-AU and any proposed replacement. Firmware may also require suffix-specific validation even when the PCB footprint appears unchanged.
合規資訊
The supplied records do not explicitly state compliance or automotive qualification for ATSAM4S4BA-AU. No compliance status was inferred from the distributor's LQFPGREENIND wording or from the New Device Entry lifecycle label.