ATSAM4S2AB-ANR - 120MHz Cortex-M4 MCU, 128KB Flash | Microchip
MPN： ATSAM4S2AB-ANR ✓ 啟用中ATSAM4S2AB-ANR 概覽
A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, sitting at the heart of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip -> semiconductor device. The ARM Cortex-M4 is a 32-bit RISC processor core optimized for mixed signal and control applications, and Flash-based MCUs allow in-field firmware updates.
Key features of the ATSAM4S2AB-ANR include the 120 MHz Cortex-M4 core with DSP extension for single-cycle MAC operations, 128 Kbytes of embedded Flash with ECC, Security Bit and Lock Bits for code protection, 64 Kbytes of SRAM, and a rich peripheral set typical of the SAM4S family including USART, SPI, TWI, PWM, ADC, and USB device support. The 1.2V/3.3V operating supply configuration supports core/IO power schemes common in industrial designs.
Architecturally, the SAM4S series achieves high code density through the Thumb-2 instruction set while the DSP instructions accelerate digital filtering and control-loop math. Flash access acceleration keeps the 120 MHz core fed from zero-wait-state execution for most code. The MPU enables robust task isolation in RTOS-based designs.
Typical applications include industrial automation and control nodes, consumer and industrial HMI panels, data loggers, motor control auxiliaries, and embedded connectivity bridges where 32-bit performance and DSP capability at moderate memory density are required. Tape-and-reel packaging (T/R) supports automated pick-and-place production.
Design consideration: the SAM4S series is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N, and legacy SAM7S series in corresponding pin counts, so PCB layouts can be reused to scale Flash/RAM density up or down without re-routing. Always verify peripheral availability across family members before reusing firmware.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single citable reference for sourcing and second-sourcing decisions.
直接替換替代品，適用於 ATSAM4S2AB-ANR — 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： ATSAM4S2AB-ANR （相同外形與佔位） — 差異在於 Packaging, RoHS Status, Flash Memory, Package, Core Processor.
ATSAM4S2BA-ANR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ATSAM4N8AA-AUR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ATSAM3S2AA-AU
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATSAM3N1AA-AU
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →ATSAM4S2AB-ANR 最大額定值與電氣特性
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-Bit |
| 最大時脈頻率 | 120 MHz |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 64 KB |
| 供應電壓 | 1.2 V / 3.3 V |
| 封裝 | 48-LQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (Industrial) |
| Instruction Set | Thumb-2 |
| DSP Instructions | Yes |
| Memory Protection Unit | Yes (MPU) |
| Flash Features | ECC, Security Bit, Lock Bits |
| Packaging | Tape & Reel (T/R) |
| Series | SAM4S |
| Terminal Form | Gull Wing |
| RoHS 狀態 | Compliant (LQFP, GREEN) |
ATSAM4S2AB-ANR 48-lqfp (7x7 mm) 腳位配置指南
ATSAM4S2AB-ANR（48-lqfp (7x7 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： ATSAM4S2AB-ANR.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAM4S2AB-ANR 適用於 6 應用s: Industrial Automation and Control Nodes, HMI Panels and User Interfaces, Data Loggers and Industrial Instrumentation, Embedded Connectivity Bridges, Smart Sensors and IoT Edge Nodes, Consumer Appliance Control Boards.
Industrial Automation and Control Nodes
The ATSAM4S2AB-ANR fits factory automation nodes such as sensor aggregation, valve and relay supervision, and actuator interfaces. Its 120 MHz Cortex-M4 core with DSP instructions executes control-loop math and digital filtering efficiently, while the industrial -40C to +85C temperature rating matches cabinet and floor-level environments. The SAM4S peripheral set (USART, SPI, TWI, PWM, ADC) covers the communication and sensing needs of a typical control node, and Flash ECC plus Lock Bits protect firmware integrity in the field. Because the SAM4S series is pin-to-pin compatible with SAM3S/SAM3N in 48-pin LQFP, OEMs can standardize one PCB across performance tiers. Place the MCU on a 3.3V rail with 100 nF decoupling per power pin; the 1.2V core domain keeps dynamic power low, supporting fanless enclosed designs.
推薦
HMI Panels and User Interfaces
For human-machine interface panels, button matrices, segment LCDs, and touch interfaces, the ATSAM4S2AB-ANR provides the processing headroom to scan inputs, run a GUI state machine, and manage communication simultaneously at 120 MHz. The 64 KB SRAM accommodates frame buffers for small displays and RTOS task stacks, while Thumb-2 code density keeps a 128 KB Flash budget sufficient for a full application. The industrial temperature grade suits panels mounted on machinery, and the 48-pin LQFP (7x7 mm) keeps PCB area compact for bezel-mounted boards. DSP instructions accelerate capacitive-touch filtering algorithms without a separate touch controller. Tape-and-reel packaging supports the mid-volume production typical of panel builders, and pin compatibility across SAM4S/SAM3S lets a single panel PCB serve cost-optimized and performance-optimized SKUs.
推薦
Data Loggers and Industrial Instrumentation
The ATSAM4S2AB-ANR is well suited to battery-powered and mains-powered data loggers: the Cortex-M4 at 120 MHz timestamps, filters, and compresses sensor data quickly, then the core idles at low power between samples, extending battery life. The ADC plus DSP single-cycle MAC operations enable on-chip FFT-based vibration or power-quality analysis before storage, reducing SD-card or communication traffic. Flash ECC preserves logged firmware integrity over long deployments, and Security/Lock Bits protect proprietary algorithms. The industrial -40C to +85C range covers unconditioned field sites, and the 48-pin LQFP footprint fits compact enclosure PCBs. With 128 KB Flash and 64 KB SRAM, typical logger firmware including a FAT file stack and MODBUS RTU fits comfortably; the pin-compatible 256 KB ATSAM4S2B covers growth without re-layout.
推薦
Embedded Connectivity Bridges
As a protocol bridge, the ATSAM4S2AB-ANR converts between industrial buses such as RS-485/MODBUS and USB device or SPI/I2C sensor links. The SAM4S UART/USART and USB device peripherals handle transport layers while the 120 MHz core runs protocol stacks in the 128 KB Flash; Thumb-2 density leaves headroom for CRC checking, buffering in 64 KB SRAM, and secondary application logic. DSP instructions accelerate checksum and filtering routines in high-throughput bridging. The 3.3V I/O domain connects directly to standard transceivers, and the industrial temperature grade suits DIN-rail and cabinet-mounted converters. Pin compatibility with SAM3S/SAM3N/SAM4N in 48-pin LQFP allows a common bridge PCB populated with different memory/performance grades per product tier, simplifying inventory and qualification for connectivity product families.
推薦
Smart Sensors and IoT Edge Nodes
The ATSAM4S2AB-ANR serves smart sensor and IoT edge nodes that must preprocess analog data before transmission. The on-chip ADC samples sensor channels, DSP instructions run calibration and windowing filters at 120 MHz, and USART/SPI/TWI links feed radio or wired modules. Flash ECC and Security Bit protect firmware and keys in deployed nodes, while the 1.2V core domain minimizes energy per sample-important for duty-cycled battery nodes. The 48-pin LQFP (7x7 mm) keeps node PCBs small enough for retrofit sensor housings, and the -40C to +85C industrial rating covers outdoor enclosures. Because SAM4S is pin-compatible with SAM3N/SAM3S 48-pin parts, node designs can offer a low-cost Cortex-M3 SKU and a DSP-capable Cortex-M4 SKU on one PCB, sharing qualification and firmware architecture.
推薦
Consumer Appliance Control Boards
Appliance control boards - dishwashers, air conditioners, power tools chargers - benefit from the ATSAM4S2AB-ANR combination of 120 MHz Cortex-M4 performance and moderate cost. DSP instructions support compressor control filtering and sensor fusion, PWM peripherals drive displays, heaters, and small motors, and 128 KB Flash holds a full application plus bootloader for field firmware updates. The 48-pin LQFP (7x7 mm) fits standard control-board footprints, and gull-wing terminals withstand reflow profiles used in appliance manufacturing. Tape-and-reel delivery aligns with high-volume SMT lines. MRL B moisture rating simplifies floor-life handling on the production line. Where BOM cost dominates basic models, the pin-compatible SAM3S 48-pin parts drop onto the same board, preserving one layout across product tiers.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4S2AB-ANR — 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 | ATSAM4S2BA-ANR | ATSAM4N8AA-AUR | ATSAM3S2AA-AU | ATSAM3N1AA-AU |
|---|---|---|---|---|---|
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Architecture | ARM Cortex-M4 with DSP + MPU | ARM Cortex-M4 with DSP + MPU | ARM Cortex-M4 (SAM4N family) | ARM Cortex-M3 | ARM Cortex-M3 |
| Pin-to-Pin Compatibility | Reference (SAM4S 48-pin) | Pin-to-pin compatible | Pin-compatible per SAM4S datasheet | Pin-compatible per SAM4S datasheet | Pin-compatible per SAM4S datasheet |
| Temperature Grade | Industrial (-40C to +85C) | Industrial | Industrial | Industrial | Industrial |
主要差異化特點
- 120 MHz Cortex-M4 with DSP instructions in a small 48-pin footprint (對比ATSAM3S2AA-AU)
- Flash ECC for functional-safety-leaning designs (對比ATSAM3S2AA-AU)
- In-family memory upgrade without PCB change (對比ATSAM4S2BA-ANR)
設計說明
The SAM4S2A uses a 1.2V core / 3.3V I/O supply scheme per distributor parametric data (1.2V/3.3V). Decouple every VDDIO pin with 100 nF ceramic capacitors placed within 2 mm of the pin, plus bulk 10 uF per rail. Power up VDDIO before or with VDDCORE to avoid latch-up during sequencing; consult the SAM4S datasheet power-supply section for the exact ramp requirements. Estimated: at 120 MHz active mode, core current is on the order of tens of mA - verify the exact figure in the datasheet electrical characteristics rather than sizing the regulator from this estimate.
The 48-LQFP 7x7 mm footprint uses 0.5 mm pitch gull-wing leads. Use a standard LQFP-48 land pattern with solder-mask-defined pads for reliable joint inspection. Route the NRST and TCK/TMS SWD programming traces to a 5-pin tag-connect or 2x5 header even in cost-optimized builds - field firmware updates via the SAM-BA bootloader still require a recovery path. Keep the 12 MHz (typical) main crystal within 10 mm of the OSC pins with short ground returns for reliable startup.
The ATSAM4S2AB-ANR contains 128 KB Flash; firmware exceeding this budget cannot be ported by simply recompiling - plan the migration to the pin-compatible 256 KB ATSAM4S2BA-ANR early if feature growth is expected. Also, the SAM4S is pin-compatible with SAM3N/SAM3S, but peripherals differ: firmware assuming identical register maps will fail. Verify the flash wait-state configuration for 120 MHz operation - running Flash at full speed without the correct wait states causes hard faults.
合規資訊
Mouser lists the part as LQFP, GREEN, IND TEMP, MRL B; omo-ic.com confirms RoHS: Compliant. GREEN designation indicates halogen-free packaging. REACH and conflict-minerals status not stated in provided data.