ATSAM4C8CA-AUR - Dual-Core Cortex-M4 120MHz MCU | Microchip
料号： ATSAM4C8CA-AUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.55 | $65.50 |
| 100 | $5.9 | $590.00 |
| 500 | $5.35 | $2,675.00 |
| 1,000 | $4.85 | $4,850.00 |
ATSAM4C8CA-AUR 概述
A microcontroller (MCU) is a single-chip computer integrating a processor core, memory, and configurable peripherals on one die, sitting at the device level of the semiconductor hierarchy beneath system-on-chip (SoC) and above simple logic ICs. The SAM4C family extends Microchip's SAM4 ARM Cortex-M4 line into security-oriented, dual-processor applications where one core can dedicate itself to cryptographic or supervision tasks.
Key features include the dual-core architecture (Cortex-M4F main core with hardware FPU plus a second Cortex-M4 coprocessor), an Advanced Cryptographic Engine (ACE) with anti-tamper protection, 512KB embedded Flash, and 128KB SRAM. The peripheral set includes five USARTs, two UARTs, two TWI (I2C) controllers, up to seven SPI interfaces, a PWM timer, two 3-channel 16-bit general-purpose timers, and DMA controllers, enabling complex multi-channel communication designs.
Technically, the device runs from 1.2V/3.3V supply domains, supports an external bus interface (EBI/EMI) with a 16-bit bus to extend program and data memory off-chip, and integrates an LCD controller for direct segment or dot-matrix display drive. The 120MHz Cortex-M4 pipeline with DSP instructions and single-cycle FPU supports signal-processing workloads such as metering and secure communications.
Typical applications include smart energy meters, secure industrial control nodes, POS terminals, and LCD-based instrumentation where tamper resistance and dual-core isolation matter.
Design consideration: plan Flash partitioning between the two cores early; the ACE and anti-tamper features require careful PCB layout to avoid probing points on sensitive nets.
This page synthesizes distributor data, drop-in alternatives, and design notes beyond the manufacturer datasheet for higher information gain.
直接替换替代料： ATSAM4C8CA-AUR ——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： ATSAM4C8CA-AUR （相同外形与封装尺寸） ——差异在于 RoHS Status, Series, Core Processor, Packaging, Package.
快速对比工具——选择替代料号进行并排对比：
ATSAM4C16CA-CU
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAM4C4CA-AU
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAM4C32CA-CU
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAM4E8CA-AU
✅ 直接替换✓ 有现货
$7.45 / 个
查看数据手册 →ATSAM4S16CA-AU
✅ 直接替换✓ 有现货
$5.55 / 个
查看数据手册 →ATSAM4C8CA-AUR 最大额定值与电气特性
| Core Processor | ARM Cortex-M4/M4F dual-core |
| Core Size | 32-bit |
| 最大时钟频率 | 120 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 512 KB (512K x 8) |
| RAM Size | 128 KB |
| 电源电压 | 1.2 V / 3.3 V |
| External Bus Interface | EBI/EMI, 16-bit |
| Connectivity | EBI/EMI, I2C, IrDA, SPI, UART/USART |
| Peripherals | DMA, LCD controller, PWM, WDT |
| Number of USARTs | 5 |
| Number of SPIs | Up to 7 |
| Timers | Two 3-channel 16-bit general-purpose timers, PWM timer |
| Security Features | Advanced Cryptographic Engine (ACE), anti-tamper, FPU |
| 封装 | 100-LQFP (14x14 mm) |
| 安装方式 | SMD/SMT |
| Packaging | Tape & Reel (TR) |
| RoHS 状态 | Compliant (RoHS: Y) |
| Series | SAM4C |
ATSAM4C8CA-AUR 100-lqfp (14x14 mm) 引脚配置指南
ATSAM4C8CA-AUR（100-lqfp (14x14 mm) 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： ATSAM4C8CA-AUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4C8CA-AUR 适用于 6 应用s: Smart Energy Metering, Secure Industrial Control Nodes, POS and Payment Terminals, LCD-Based Instrumentation and HMI, IoT Edge Devices with Security, Motor Control and Automation.
Smart Energy Metering
Smart electricity meters benefit directly from the ATSAM4C8CA-AUR's dual-core architecture and integrated security. One Cortex-M4F core runs metering computation and communication protocols at 120MHz, while the second core isolates the Advanced Cryptographic Engine handling DLMS/COSEM-class authentication and encrypted data exchange. The anti-tamper feature detects physical probing attempts, a key requirement for revenue-grade meters, and the two 3-channel 16-bit timers plus PWM support precise energy sampling. With 512KB Flash and 128KB SRAM, firmware including metrology stacks, multiple protocol stacks, and event logs fits on-chip. The LCD controller directly drives display segments, and the EBI/EMI 16-bit bus can extend memory for tariff tables when needed, all within a single 100-LQFP footprint.
推荐
Secure Industrial Control Nodes
Industrial control nodes handling proprietary process data need both deterministic performance and communication protection, and the ATSAM4C8CA-AUR delivers both in one chip. The 120MHz Cortex-M4F core with hardware FPU executes PID loops and signal filtering with single-cycle multiply-accumulate, while the coprocessor offloads encryption tasks via the Advanced Cryptographic Engine without stealing main-core cycles. Five USARTs, two TWI I2C controllers, and up to seven SPI interfaces allow simultaneous connection of sensors, drives, and fieldbus transceivers, with DMA transfers keeping CPU load low. Anti-tamper protection guards firmware IP and configuration data on physically accessible hardware. Industrial designers value that the 1.2V/3.3V supply architecture simplifies interfacing with 3.3V logic across the PLC backplane.
推荐
POS and Payment Terminals
Payment terminals require cryptographic processing, tamper evidence, and display drive - three requirements the ATSAM4C8CA-AUR addresses natively. The dual-core split lets the payment application core remain isolated from the security core running the Advanced Cryptographic Engine for PIN and transaction encryption, supporting security architectures that separate trusted and untrusted code. Anti-tamper circuitry detects enclosure intrusion attempts. The on-chip LCD controller drives customer-facing displays directly, while five USARTs connect card readers, printers, and PIN pads. With 512KB Flash and 128KB SRAM, the terminal application plus cryptographic libraries fit without external memory, though the EBI/EMI interface allows expansion if receipt buffering or graphics grow. Tape & Reel packaging (ATSAM4C8CA-AUR) suits automated production lines.
推荐
LCD-Based Instrumentation and HMI
Test instruments and human-machine interfaces need both computational headroom and direct display drive, which the ATSAM4C8CA-AUR combines on one die. Its integrated LCD controller drives segment or dot-matrix panels without a dedicated display driver, reducing BOM cost and board area, while the 120MHz Cortex-M4F with FPU performs real-time measurement math, scaling, and filtering. The 16-bit EBI/EMI external bus supports additional SRAM for frame buffers or data-log storage beyond the on-chip 128KB. Multiple SPI and USART channels connect ADC front-ends, touch controllers, and communication ports concurrently, with DMA keeping interrupt latency predictable for responsive user interfaces. The dual-core option can dedicate one processor to UI rendering and the other to control loops, preventing interaction freezes common on single-core HMIs.
推荐
IoT Edge Devices with Security
IoT edge nodes that transmit sensitive data need local cryptographic acceleration, and the ATSAM4C8CA-AUR's Advanced Cryptographic Engine with anti-tamper provides hardware security that software-only Cortex-M solutions lack. The 120MHz dual-core design handles sensor acquisition on one core and TLS-class session handling on the other, improving worst-case latency versus interrupt-driven single-core designs. Up to seven SPI controllers and two TWI I2C buses interface sensors and radios concurrently, while five USARTs support modem and RS-485 links. The 512KB Flash accommodates an RTOS plus over-the-air update images, and DMA offloads data paths to conserve power between wakeups. Designers should note supply domains are 1.2V/3.3V, matching common sensor and radio logic levels directly.
推荐
Motor Control and Automation
The ATSAM4C8CA-AUR suits embedded motor-control and automation controllers that combine FOC computation with supervisory communication. The Cortex-M4F's hardware FPU executes field-oriented control math efficiently at 120MHz, the PWM timer generates drive waveforms, and two 3-channel 16-bit general-purpose timers capture encoder or hall feedback. Five USARTs and multiple SPI channels connect drives, sensors, and supervisory PLCs, while DMA ensures PWM update rates are not disturbed by communication interrupts. The dual-core split can dedicate one core to the control loop and the other to protocol stacks such as Modbus, hardening real-time determinism. Anti-tamper protects proprietary control algorithms, and the 100-LQFP (14x14 mm) package offers abundant GPIO for relays, indicators, and safety interlocks on one board.
推荐
推荐产品汇总
工程参考数据： ATSAM4C8CA-AUR ——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 | ATSAM4C16CA-CU | ATSAM4C4CA-AU | ATSAM4E8CA-AU | ATSAM4S16CA-AU |
|---|---|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP - same footprint | 100-LQFP - same footprint | 100-LQFP - same footprint, different pin functions | 100-LQFP - same footprint, different pin functions |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | Dual-core Cortex-M4/M4F | Dual-core Cortex-M4/M4F | Dual-core Cortex-M4/M4F | Single-core Cortex-M4F | Single-core Cortex-M4F |
| Flash Memory | 512 KB | 1024 KB | 256 KB | 512 KB | 1024 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| Maximum Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Cryptographic Engine | Yes (ACE + anti-tamper) | Yes (ACE + anti-tamper) | Yes (ACE + anti-tamper) | No | No |
| Ethernet MAC | No | No | No | Yes | No |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant |
关键差异点
- Dual-core security architecture （对比 ATSAM4E8CA-AU)
- Hardware security for revenue-grade designs （对比 ATSAM4S16CA-AU)
- Memory headroom migration path （对比 ATSAM4C4CA-AU)
- Trade-off: no Ethernet （对比 ATSAM4E8CA-AU)
设计说明
The ATSAM4C8CA-AUR uses 1.2V and 3.3V supply domains (per Kynix listing: 1.2V/3.3V 100-Pin LQFP). Provide separate, well-decoupled 3.3V rails for VDDIO/VDDCORE per the SAM4C datasheet power architecture, and use a regulated 1.2V core supply with local 100nF plus bulk 10uF decoupling at each power pin pair. Estimated: with ~50 mA typical active current at 3.3V, core power is roughly 0.17 W - well within LQFP-100 thermal capability, but verify against the current datasheet electrical characteristics table for your exact clock configuration.
For the anti-tamper and cryptographic features to be meaningful, avoid routing tamper-detection nets and crystal circuits on the outer PCB layers where they can be probed. Place the 120MHz-capable main oscillator close to the MCU with guard ground, keep the EBI/EMI 16-bit bus within 10 cm of external memory to limit stubs, and use a solid ground plane under the 100-LQFP. Follow Microchip's SAM4C hardware design application notes for oscillator layout and reset circuitry before tape-out.
A frequent SAM4C pitfall is assuming cross-family pin compatibility: the ATSAM4C8C, ATSAM4E8C, and ATSAM4S16 all exist in 100-LQFP, but peripheral multiplexing and pin assignments differ, so a footprint match is NOT a drop-in match across families. Within the SAM4C family itself (ATSAM4C4C/8C/16C/32C in the same package), migration is intended to be footprint-compatible - always confirm against the specific datasheet pinout table. Also budget Flash partitions for the coprocessor early; late dual-core partitioning changes are costly.
合规信息
RoHS: Y per distributor listing (omo-ic.com). Mouser lists the part as 'LQFP Green IND TEMP' indicating green/lead-free industrial-temperature packaging. REACH, halogen-free, and conflict-minerals status not stated in provided data.