ATSAM3S4CA-AU - 64MHz Cortex-M3 256KB MCU | Microchip
N.º de pieza: ATSAM3S4CA-AU ✓ ActivoATSAM3S4CA-AU Descripción general
A microcontroller is a programmable semiconductor that integrates a processor core, nonvolatile program memory, volatile data memory, and peripherals into one device. The ATSAM3S4C belongs to Microchip's SAM3S family, placing it within the hierarchy of embedded microcontroller, 32-bit microcontroller, ARM Cortex-M3 microcontroller, and general-purpose embedded processing. Its combination of memory capacity and peripheral integration makes it suitable for control-intensive embedded products.
The device provides 256 KB of flash for firmware and 48 KB of SRAM for working data, while its Cortex-M3 core operates at up to 64 MHz. It is supplied in a 100-lead LQFP package, giving the design a large pin count for peripheral access and external connections. The ATSAM3S4CA-AU is associated with industrial-temperature ordering information in distributor records.
Its architecture combines a 32-bit ARM Cortex-M3 processor with embedded Flash and SRAM in a single package. This configuration supports event-driven control, communication, data acquisition, and general embedded processing while retaining a compact, single-chip implementation. Exact peripheral inventory, voltage limits, GPIO count, and converter specifications were not included in the supplied verified records and therefore should be confirmed in the manufacturer datasheet before design release.
Typical implementation areas include industrial automation, embedded control, communications equipment, data-acquisition systems, and connected industrial products. Its 64 MHz processing rate supports moderately timing-sensitive control tasks, while 256 KB of flash accommodates a substantial embedded application and 48 KB of SRAM provides space for runtime variables and buffers.
A critical design step is to verify the complete pin assignment, electrical limits, clock requirements, and peripheral multiplexing for the 100-LQFP layout using the official ATSAM3S4C documentation. Designers should also account for all supply pins, decoupling requirements, programming signals, and exposed package constraints before committing the footprint to a PCB.
This product record combines verified distributor specifications with same-family drop-in alternatives, procurement information, and engineering-focused design guidance. It distinguishes verified facts from unavailable parameters so engineers can identify what is confirmed without confusing incomplete search results with manufacturer technical data.
Alternativas directas para ATSAM3S4CA-AU — 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 ATSAM3S4CA-AU (mismo factor de forma y huella) — difiere en RoHS Status, Package, Series, SRAM, Core Processor.
ATSAM3S2AA-AU
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATSAM3S1CA-AU
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATSAM3S2CA-AU
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATSAM3S4BA-AU
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATSAM3X4CA-AU
✅ Sustitución directaConsulte el precio
Ver hoja de datos →ATSAM3S4CA-AU Valores máximos y características eléctricas
| Product Type | 32-bit ARM Cortex-M3 flash microcontroller |
| Processor Core | ARM Cortex-M3 |
| Maximum CPU Frequency | 64 MHz |
| Flash Memory | 256 KB |
| Flash Organization | 256K x 8 bits |
| SRAM | 48 KB |
| Bit Width | 32 bits |
| Series | SAM3S |
| Encapsulado | 100-lead LQFP, 14 mm x 14 mm |
| Tipo de montaje | Surface mount |
| Temperature Grade | Industrial temperature |
Guía de configuración de pines de ATSAM3S4CA-AU 100-lead lqfp, 14 mm x 14 mm
Configuración de pines para ATSAM3S4CA-AU (encapsulado 100-lead lqfp, 14 mm x 14 mm). 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 ATSAM3S4CA-AU.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATSAM3S4CA-AU es adecuado para 6 aplicacións: Industrial Automation Controller, Data-Acquisition System, Communications Gateway, Connected Industrial Sensor Node, Motor and Machine Control, Human-Machine Interface Controller.
Industrial Automation Controller
The ATSAM3S4CA-AU fits an industrial automation controller that requires a 32-bit Cortex-M3 processor, 64 MHz operating speed, 256 KB of flash, and 48 KB of SRAM. Its processor capacity is suitable for coordinating control logic, managing communication tasks, and maintaining a real-time operating system without a separate host processor. The 100-lead LQFP package also provides a large pin count for digital interfaces and external signal connections. Before final design release, verify the exact GPIO count, timer resources, communication peripherals, supply-voltage limits, and isolation requirements in the manufacturer documentation.
Recomendado
Data-Acquisition System
The ATSAM3S4CA-AU can serve as the processing platform for a compact data-acquisition system requiring 256 KB of program storage and 48 KB of operating memory. Its 64 MHz Cortex-M3 core can sequence sensor readings, apply filtering, timestamp samples, and transfer results over a communications interface. The 100-LQFP package is useful when several digital, clock, debug, and peripheral signals are required. Exact ADC resolution, conversion rate, sample timing, input impedance, and external interface availability were not supplied, so analog front-end selection must be based on the official electrical characteristics.
Recomendado
Communications Gateway
ATSAM3S4CA-AU is suitable for a communications gateway that must combine protocol handling, local control, and firmware storage in one microcontroller. The 64 MHz ARM Cortex-M3 core supports responsive packet processing, while 256 KB of flash accommodates embedded networking and application code and 48 KB of SRAM supports buffers and working state. Its 100-lead LQFP footprint offers extensive pin availability for serial links and control signals. Verify the required USART, SPI, CAN, Ethernet, or other interface resources directly because the supplied search records do not enumerate the complete peripheral set.
Recomendado
Connected Industrial Sensor Node
The ATSAM3S4CA-AU can be used in a connected sensor node that combines local sensing, configuration storage, and network-facing control. Its 64 MHz Cortex-M3 processor provides enough performance for sampling, filtering, protocol framing, and health monitoring, while the 256 KB flash and 48 KB SRAM support embedded middleware and runtime buffers. The 100-lead LQFP package is appropriate when a prototype or industrial assembly benefits from readily inspectable leads. Before deployment, confirm low-power modes, wake-up sources, radio-interface requirements, and operating-temperature limits against verified documentation.
Recomendado
Motor and Machine Control
The ATSAM3S4CA-AU is a candidate for machine-control logic combining a 64 MHz Cortex-M3 processor with 256 KB of firmware storage and 48 KB of SRAM. It can execute motion sequencing, manage discrete inputs, monitor machine-state variables, and coordinate communications with a higher-level controller. The 100-lead package offers numerous external signal opportunities for encoders, control outputs, communications, and debugging. Exact timer channels, PWM resources, analog inputs, fault handling, and pin multiplexing must be verified before replacing a dedicated controller or designing safety-related timing functions.
Recomendado
Human-Machine Interface Controller
ATSAM3S4CA-AU can serve as the controller behind a human-machine interface that combines display updates, input handling, and embedded system logic. The 64 MHz processor supports responsive menu and event handling, while 256 KB of flash and 48 KB of SRAM accommodate interface firmware and transient display or input data. Its 100-lead LQFP package provides a practical development and production package when multiple control and communication lines are needed. Verify LCD or touch-controller interfaces, external memory support, and pin multiplexing because those peripheral details were not included in the verified snippets.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAM3S4CA-AU — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAM3S2AA-AU | ATSAM3S1CA-AU | ATSAM3S2CA-AU | ATSAM3S4BA-AU | ATSAM3X4CA-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) | 100-LQFP (14x14) |
| Maximum CPU Frequency | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
Diferenciadores clave
- Verified 256 KB flash capacity (frente a ATSAM3S2AA-AU)
- Verified 48 KB SRAM configuration (frente a ATSAM3S1CA-AU)
- Directly identified manufacturer product family (frente a ATSAM3X4CA-AU)
Notas de diseño
Do not treat a similar SAM3-family order code as an unconditional substitute. The ATSAM3S4CA-AU has a verified 64 MHz Cortex-M3 core, 256 KB flash, 48 KB SRAM, and 100-lead LQFP package, while the retrieved records do not expose the complete pin and peripheral tables for the alternatives. Before substitution, compare every power pin, ground pin, debug signal, reset connection, boot option, peripheral mapping, and supply limit in the manufacturer documentation. Firmware and bootloader changes may also be necessary even when the PCB footprint remains the same.
Allocate the 100-LQFP footprint according to the official package drawing rather than from the generic 14 mm by 14 mm package description. Confirm pin-1 orientation, exposed thermal requirements, pad dimensions, solder-mask clearance, and recommended land pattern directly from Microchip documentation. Place required decoupling capacitors beside their associated supply pins and provide a short, low-impedance return path for each supply connection. The verified dataset does not identify the capacitor values or pin assignments, so those items must come from the manufacturer datasheet.
Establish the device's supported supply range and operating conditions from the official electrical-characteristics table before powering the board. The supplied data confirms a 64 MHz Cortex-M3 configuration with 256 KB flash and 48 KB SRAM but does not state input-voltage limits or current consumption. Validate startup behavior, brownout handling, clock configuration, and regulator headroom under the worst processor workload. Avoid inferring electrical limits from the package, industrial-temperature label, or distributor description because those details do not establish safe operating conditions.
Información de cumplimiento
The supplied verified records identify an industrial-temperature ATSAM3S4CA-AU but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown pending current manufacturer declarations.
