ATSAM4S4CA-AN - 120MHz Cortex-M4 MCU | Microchip
料号： ATSAM4S4CA-AN ✓ 量产中ATSAM4S4CA-AN 概述
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals into one compact device. The ATSAM4S4CA-AN belongs to the SAM4S family of 32-bit embedded processors and sits within the hierarchy of Arm Cortex-M4 microcontrollers, embedded controllers, and integrated circuits. It allows firmware, communications protocols, analog measurement, and control functions to be implemented on a single device rather than across several discrete components.
The 120 MHz Cortex-M4 core provides processing performance for interrupt-driven control, protocol handling, and real-time data processing. Its 256 KB Flash memory supports application firmware and boot code, while 64 KB of SRAM provides working memory for stack operations, buffers, and control algorithms. The integrated 12-bit ADC supports up to 16 input channels, and the dual 12-bit DAC provides two independent digital-to-analog output paths. These resources reduce external component count in compact embedded systems.
The ATSAM4S4CA-AN is identified in the 100-LQFP industrial package, with surface-mount gull-wing leads for automated assembly and inspection. Its industrial temperature-grade marking supports use in factory equipment, environmental controllers, industrial communications equipment, and embedded measurement systems. Boundary, power, and exposed-pad requirements should be followed from the manufacturer datasheet and pin-description table when laying out the PCB.
Typical applications include PLC and automation controllers, sensor-acquisition nodes, industrial data loggers, motor and process-control equipment, communications gateways, and embedded instrumentation. The combination of 120 MHz processing, 12-bit analog conversion, dual DAC outputs, and 64 KB SRAM allows these systems to consolidate measurement and control functions while preserving deterministic embedded behavior.
When designing around this device, begin with the manufacturer pin-description and electrical-characteristics tables, especially for power sequencing, analog-reference requirements, and peripheral pin multiplexing. Place decoupling capacitors close to the supply pins, route sensitive analog inputs away from switching nodes, and validate the clock, reset, and programming interfaces on the first prototype. The 100-LQFP footprint also requires deliberate fanout for the fine-pitch leads and thermal-aware copper distribution.
This product analysis combines processor, memory, analog-peripheral, package, sourcing, and engineering-selection information in a format that supports direct PCB planning, firmware architecture decisions, and drop-in replacement evaluation.
直接替换替代料： ATSAM4S4CA-AN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAM4S4CA-AN （相同外形与封装尺寸） ——差异在于 Package, Series, Temperature Grade, Architecture, Core Processor.
ATSAM4S4BA-AN
✅ 直接替换联系询价
查看数据手册 →ATSAM4C4CB-AU
✅ 直接替换联系询价
查看数据手册 →ATSAM4S4CA-AN 最大额定值与电气特性
| Product Type | 32-bit Arm Cortex-M4 microcontroller |
| CPU Core | Arm Cortex-M4 |
| Architecture | Single-core, 32-bit |
| Maximum CPU Frequency | 120 MHz |
| Flash Program Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| ADC Resolution | 12 bits |
| ADC Channel Count | 16 channels |
| DAC Resolution | 12 bits |
| DAC Channel Count | 2 channels |
| 封装 | 100-pin LQFP |
| 安装类型 | Surface mount |
| Temperature Grade | Industrial |
| Lead Form | Gull wing |
| Package Shape | Square |
| External Memory Interfaces | SRAM, PSRAM, NOR Flash, LCD module, and NAND Flash support |
ATSAM4S4CA-AN square 引脚配置指南
ATSAM4S4CA-AN（square 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATSAM4S4CA-AN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4S4CA-AN 适用于 6 应用s: Industrial PLC and Automation Controller, Sensor Acquisition and Data Logger, Process Control and Instrumentation, Industrial Communications Gateway, Motor and Equipment Control, Embedded Data Acquisition Terminal.
Industrial PLC and Automation Controller
The ATSAM4S4CA-AN fits compact PLC and automation-controller designs because its 120 MHz Arm Cortex-M4 core can execute control logic, communication tasks, and timing-intensive routines while the 64 KB SRAM supports buffers and task data. The 16-channel 12-bit ADC can acquire sensor and process inputs, while the dual 12-bit DACs can drive analog command or setpoint outputs. Place the MCU in the 100-pin LQFP footprint and follow the manufacturer’s pin multiplexing, power, and decoupling guidance. Confirm that each required field-bus function, isolation boundary, and I/O expansion interface matches the available peripheral resources before finalizing the controller architecture.
推荐
Sensor Acquisition and Data Logger
The ATSAM4S4CA-AN is well suited to multichannel sensor acquisition because it combines a 16-channel 12-bit ADC with a 120 MHz Cortex-M4 processor in one package. Firmware can sample, filter, scale, and timestamp measurements while using 256 KB of Flash for local buffering and 64 KB of SRAM for active processing. The LQFP package also provides enough pins for digital status signals, communication ports, and storage interfaces. For accurate results, separate analog and digital return paths, keep the analog reference and input traces compact, and follow the manufacturer’s recommended input-conditioning and grounding arrangement.
推荐
Process Control and Instrumentation
The ATSAM4S4CA-AN supports process-control instruments that must measure inputs, calculate control actions, and generate analog test or excitation signals. Its 12-bit ADC handles up to 16 analog channels, while the dual 12-bit DAC provides two independently controlled outputs for actuators, references, or signal generation. The 120 MHz processor allows the firmware to combine acquisition, filtering, control calculations, diagnostics, and communications within one embedded controller. Designers should verify DAC output loading, analog reference behavior, and pin assignments from the manufacturer datasheet, and should isolate analog outputs where the connected load could inject noise or ground disturbance.
推荐
Industrial Communications Gateway
The ATSAM4S4CA-AN can serve as the protocol-processing MCU in industrial communications equipment that converts between fieldbus, serial, or network-oriented interfaces. Its 120 MHz Cortex-M4 core provides performance for framing, checksums, buffering, and real-time protocol tasks, while 256 KB of Flash stores firmware and 64 KB of SRAM accommodates active packet buffers. The available peripheral mix should be checked against the required UART, SPI, CAN, USB, Ethernet, and timer resources. For a reliable gateway, use separate routing for high-speed digital communication and analog or low-frequency signals, and keep power-decoupling paths close to the device pins.
推荐
Motor and Equipment Control
The ATSAM4S4CA-AN is appropriate for embedded motor-control and equipment-control modules where the controller must execute timing routines, process feedback, and manage multiple digital I/O functions. The 120 MHz Cortex-M4 core provides computational headroom for closed-loop control and fault handling, while the 12-bit ADC can monitor analog feedback. The dual DACs may support reference or command generation where the application permits. Exact motor-control peripherals, timer channels, pin assignments, and electrical limits must be validated against the device documentation. External power stages should be isolated appropriately, and high-current switching routes must not cross sensitive control and analog-ground paths.
推荐
Embedded Data Acquisition Terminal
The ATSAM4S4CA-AN can support a compact embedded terminal that gathers measurements, processes them locally, and transfers results through a serial or network link. The 16-channel 12-bit ADC provides simultaneous pin-count flexibility for multi-sensor systems, while 256 KB of Flash and 64 KB of SRAM allow application firmware, calibration values, working buffers, and protocol stacks to coexist. In a completed design, include local storage and status indication according to the product requirements, and follow the manufacturer’s clock, reset, debug, and power-sequencing arrangements. Validate the analog input network for the intended source impedance, bandwidth, and noise environment rather than assuming the nominal ADC resolution alone determines accuracy.
推荐
推荐产品汇总
工程参考数据： ATSAM4S4CA-AN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAM4S4BA-AN | ATSAM4C4CB-AU |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-LQFP | 100-LQFP | 100-LQFP |
| CPU Core | Arm Cortex-M4 | Arm Cortex-M4 | Arm Cortex-M4 |
| Maximum CPU Frequency | 120 MHz | 120 MHz | 120 MHz |
| Flash Program Memory | 256 KB | 256 KB | 256 KB |
关键差异点
- Documented dual-DAC mixed-signal capability （对比 ATSAM4S4BA-AN)
- Sixteen-channel 12-bit ADC for multichannel measurement （对比 ATSAM4C4CB-AU)
- 120 MHz processing with 64 KB working memory （对比 ATSAM4C4CB-AU)
设计说明
Use the 100-pin LQFP land pattern from the manufacturer package drawing and check every signal against the device pin-description table before releasing PCB artwork. Preserve access to the programming and debug interface, keep the footprint free of unintended copper or solder mask obstructions, and route sensitive analog inputs away from high-current outputs. The 0.5 mm pitch requires disciplined fanout and inspection after assembly.
Place the required bypass capacitors at the supply and ground pins exactly as shown in the manufacturer reference layout. Establish a low-impedance ground plane, return analog-reference current locally, and avoid sharing narrow return paths between analog converters and digital switching nodes. Confirm operating voltage limits, startup behavior, and external load requirements from the electrical-characteristics table before selecting regulators or peripheral interfaces.
Separate analog inputs from digital signals and switching outputs, using the shortest practical analog traces and a continuous ground reference beneath the measurement circuitry. The 16-channel 12-bit ADC and dual 12-bit DAC simplify mixed-signal designs, but channel-to-channel crosstalk and reference noise still depend on component placement, source impedance, filtering, and grounding. Validate the complete analog front end rather than treating converter resolution as the only accuracy criterion.
Do not approve a replacement from the package name alone. Although ATSAM4S4BA-AN and ATSAM4C4CB-AU are 100-LQFP alternatives, each device’s pin multiplexing, peripheral availability, clock options, electrical limits, and programming requirements must be checked. The ATSAM4S4C family documentation describes pin-to-pin compatibility within the Microchip portfolio, but production approval still requires device-specific comparison and firmware review.
合规信息
The product information identifies an industrial temperature grade but does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Confirm current declarations for the exact ordering code with Microchip Technology.
