ATSAM4S2CB-CFN - 120MHz Cortex-M4 128KB MCU | Microchip
N.º de pieza: ATSAM4S2CB-CFN ✗ Fin de vidaATSAM4S2CB-CFN Descripción general
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.
Alternativas directas para ATSAM4S2CB-CFN — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAM4S2CB-CFN (mismo factor de forma y huella) — difiere en Package, Mounting Type, SRAM, Temperature Grade, USB.
ATSAM4SD16CB-CFN
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Ver hoja de datos →ATSAM4S2CB-CFN Valores máximos y características eléctricas
| 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 |
| Encapsulado | 100-VFBGA, 7 x 7 mm |
| Terminal Count | 100 balls |
| Tipo de montaje | Surface mount |
| Temperature Grade | Industrial |
| Internal Core Voltage | 1.2 V |
| Package Color | Green |
Guía de configuración de pines de ATSAM4S2CB-CFN green
Configuración de pines para ATSAM4S2CB-CFN (encapsulado green). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para ATSAM4S2CB-CFN.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATSAM4S2CB-CFN es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAM4S2CB-CFN — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Compact 100-ball implementation (frente a ATSAM4SD16CB-CFN)
- Real-time processing headroom (frente a ATSAM4SD16CB-CFN)
- Integrated connectivity and touch control (frente a ATSAM4SD16CB-CFN)
Notas de diseño
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.
Información de cumplimiento
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.
