ATSAM4S2CB-CFN - 120MHz Cortex-M4 128KB MCU | Microchip
MPN： ATSAM4S2CB-CFN ✗ 停產ATSAM4S2CB-CFN 概覽
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, working memory, and peripherals on one die. The ATSAM4S2CB-CFN sits within the hierarchy of 32-bit microcontroller, RISC embedded processor, and system-on-chip. Its ARM Cortex-M4 core includes a Memory Protection Unit, DSP instructions, and the Thumb-2 instruction set, allowing real-time control applications to combine deterministic control with useful digital signal-processing capability.
Key resources include 128 KB of Flash organized as 128K x 8, 64 KB of SRAM, and execution at up to 120 MHz. The SAM4S family also provides USB device connectivity and a broad peripheral set for system control, connectivity, and analog interfacing. Native support for Microchip QTouch capacitive sensing expands the device beyond conventional GPIO control into buttons, sliders, and wheel interfaces. These features make the MCU suitable for compact human-interface and connected-control designs.
The ATSAM4S2C family architecture is designed to offer pin-to-pin compatibility with the 48-, 64-, and 100-pin versions of SAM3N and SAM3S, as well as the 64-pin SAM4N and SAM7S families. Compatibility provides a path for board-family standardization, although firmware, electrical limits, peripheral availability, and package construction must still be checked before changing an existing design. The VFBGA package requires careful PCB escape routing and inspection after assembly.
Typical applications include industrial data acquisition, capacitive-touch control panels, USB-connected peripherals, environmental monitoring, compact automation controllers, and embedded human-interface systems. At 120 MHz, the Cortex-M4 core provides ample performance for protocol handling, state-machine control, communications, and moderate signal-processing workloads while retaining a simple embedded architecture.
Design attention should focus on BGA escape routing, decoupling, exposed-pad or thermal management requirements, and firmware support for the selected USB and touch peripherals. Before schematic release, verify the complete pin assignment, package drawing, operating limits, and peripheral availability in the manufacturer datasheet. The ATSAM4S2CB-CFN is also a natural platform for mixed-signal nodes where local sensing, touch detection, communications, and deterministic control must share one compact processor.
This page combines the key device characteristics, practical implementation considerations, package details, and verified drop-in comparison candidates to support faster component selection and board-design review.
直接替換替代品，適用於 ATSAM4S2CB-CFN — 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： ATSAM4S2CB-CFN （相同外形與佔位） — 差異在於 Package, Mounting Type, SRAM, Temperature Grade, USB.
ATSAM4SD16CB-CFN
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4S2CB-CFN 最大額定值與電氣特性
| Product Type | 32-bit ARM Cortex-M4 RISC microcontroller |
| Series | SAM4S |
| Maximum CPU Frequency | 120 MHz |
| Embedded Flash Memory | 128 KB (128K x 8) |
| SRAM | 64 KB |
| Processor Core | ARM Cortex-M4 |
| Instruction Set | Thumb-2 instruction set |
| DSP Capability | DSP instructions |
| Memory Protection Unit | Yes |
| USB Capability | Full-speed USB device port |
| 封裝 | 100-VFBGA, 7 x 7 mm |
| Terminal Count | 100 balls |
| 安裝類型 | Surface mount |
| Temperature Grade | Industrial |
| Internal Core Voltage | 1.2 V |
| Package Color | Green |
ATSAM4S2CB-CFN green 腳位配置指南
ATSAM4S2CB-CFN（green 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： ATSAM4S2CB-CFN.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAM4S2CB-CFN 適用於 6 應用s: Industrial Data-Acquisition Controller, USB-Connected Control Peripheral, Capacitive-Touch Control Panel, Environmental Monitoring Hub, Compact Automation Controller, Secure Embedded Communication Node.
Industrial Data-Acquisition Controller
The ATSAM4S2CB-CFN fits industrial acquisition nodes that must sample sensors, execute control logic, and manage communications in one compact controller. Its 120 MHz ARM Cortex-M4 core provides headroom for real-time filtering using the core's DSP instructions, while 128 KB of Flash and 64 KB of SRAM support firmware, configuration, and short acquisition buffers. The 100-VFBGA package reduces board area, although its 100-ball construction demands careful escape routing and assembly inspection. Use the manufacturer's reference clock, decoupling, and layout guidance to preserve signal integrity and repeatable timing across industrial temperature conditions.
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USB-Connected Control Peripheral
The ATSAM4S2CB-CFN is appropriate for USB-connected control devices because the SAM4S family includes a full-speed USB device port and a 120 MHz Cortex-M4 core for protocol handling. A designer can run device firmware, manage control state, and process local I/O without a separate USB interface controller. The 128 KB of embedded Flash accommodates a compact application and USB stack, while 64 KB of SRAM supports packet handling and working state. Layout work should prioritize clean USB data routing, controlled impedance, correct supply decoupling, and ESD protection appropriate to the connector environment.
推薦
Capacitive-Touch Control Panel
The ATSAM4S2CB-CFN suits compact capacitive-touch interfaces because the SAM4S family provides native Microchip QTouch support for buttons, sliders, and wheels. The 120 MHz Cortex-M4 core can service touch scanning while also running the user interface, diagnostics, and communications needed by a panel controller. Its 100-VFBGA package allows the complete control function to fit into a dense assembly, but the touch electrodes, analog routing, and grounding network require careful implementation. Validate electrode geometry and filtering in the final mechanical design, then use QTouch calibration to compensate for board and enclosure variation.
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Environmental Monitoring Hub
The ATSAM4S2CB-CFN can serve as the processing hub in an environmental monitoring system that combines temperature, humidity, gas, and motion inputs. Its 64 KB of SRAM supports local buffering, while the Cortex-M4 core's DSP instructions support signal conditioning and filtering in software. The MCU's extensive system-control and analog-interfacing peripherals make it useful for coordinating sensor acquisition, threshold logic, alarm outputs, and local data transfer. Power efficiency should be evaluated with the exact sensor duty cycle, and the design should place analog inputs away from fast digital and USB routing to minimize interference.
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Compact Automation Controller
The ATSAM4S2CB-CFN is well suited to compact automation controllers that combine sequence logic, communications, and local I/O. At up to 120 MHz, the Cortex-M4 core can execute multiple communication and control tasks while retaining deterministic peripheral handling. The 128 KB Flash capacity provides room for application code and configuration, and the 100-VFBGA package helps limit controller board size. For motor, relay, or high-current interfaces, keep the MCU and sensitive clock circuitry separated from switching nodes, provide local bulk and high-frequency decoupling, and validate industrial temperature operation under the worst expected load.
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Secure Embedded Communication Node
The ATSAM4S2CB-CFN can anchor a compact communications node that must parse protocols and maintain local control functions. The 120 MHz Cortex-M4 core handles protocol processing efficiently, while the Memory Protection Unit helps isolate memory regions in a structured firmware design. Flash lock bits and the embedded security features associated with the SAM4S family should be configured for the product's update model and threat assumptions. Package-level work should include controlled clock routing, robust supply filtering, and programming access that remains available without compromising production security.
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推薦產品摘要
工程參考資料，適用於 ATSAM4S2CB-CFN — 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 | ATSAM4SD16CB-CFN |
|---|---|---|
| Package | 100-VFBGA (7x7) | 100-VFBGA (7x7) |
| Brand | Microchip Technology | Microchip Technology |
| Processor Core | ARM Cortex-M4 | ARM Cortex-M4 |
| Maximum CPU Frequency | 120 MHz | 120 MHz |
| Instruction Set | Thumb-2 instruction set | Thumb-2 instruction set |
| Touch Support | Native Microchip QTouch support | Native Microchip QTouch support |
主要差異化特點
- Compact 100-ball implementation (對比ATSAM4SD16CB-CFN)
- Real-time processing headroom (對比ATSAM4SD16CB-CFN)
- Integrated connectivity and touch control (對比ATSAM4SD16CB-CFN)
設計說明
Design the 100-VFBGA escape routing with short, symmetric signal paths and a defined ground reference on every layer. Place input and output decoupling capacitors close to their associated power balls, and route clocks away from USB data and switching nodes. The 7 x 7 mm land pattern requires advanced assembly capability, so confirm the manufacturer's package drawing, ball map, solder-mask and paste recommendations, and X-ray inspection requirements before releasing the PCB files.
Follow the datasheet's separate supply requirements for the 1.2 V internal core and external I/O rails. Keep the core supply quiet and decouple each rail at the package with the required bulk and high-frequency capacitors. Estimated: with a 5 V input, 1.2 V core output, and 100 mA total core load, ideal linear-regulator dissipation is 0.38 W before regulator efficiency losses; actual device dissipation depends on the complete power architecture and must be checked against the thermal design.
Preserve USB signal quality by using a continuous reference plane, minimizing stub lengths, and applying the layout and impedance guidance from the manufacturer datasheet. Place USB protection close to the connector and keep it referenced to the same ground system as the MCU. For QTouch electrodes, keep the sensitive analog paths short and isolated from USB, clock, and switching traces; validate the complete electrode and enclosure geometry during prototype testing.
Do not assume that family-level pin compatibility makes every SAM3, SAM4N, or SAM7S MCU interchangeable with the ATSAM4S2CB-CFN. Confirm BGA ball count, exposed connections, supply rails, clock limits, peripheral instances, interrupt assignments, bootloader behavior, and Flash organization. For ATSAM4SD16CB-CFN, update linker scripts and memory initialization as required; the larger-memory configuration can alter the firmware image even when the PCB remains unchanged.
合規資訊
The verified product records identify a green, industrial-temperature package but do not provide explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 qualification is not identified for this part.
