ATSAM4CMP8CA-AUR - Dual-Core Cortex-M4 120MHz MCU | Microchip
料号： ATSAM4CMP8CA-AUR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.95 | $89.50 |
| 100 | $7.9 | $790.00 |
| 500 | $7.1 | $3,550.00 |
| 1,000 | $6.45 | $6,450.00 |
ATSAM4CMP8CA-AUR 概述
A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded computing hierarchy (MCU -> embedded processor -> integrated circuit -> semiconductor). MCUs execute dedicated control tasks in real time, unlike application processors that run general-purpose operating systems. The SAM4CM family extends Microchip's (formerly Atmel) SAM4 ARM Cortex-M portfolio by adding a second Cortex-M4F core for metering and secure applications.
Key features of the ATSAM4CMP8CA include its dual-core architecture that partitions measurement and communication workloads, a 120 MHz maximum core clock for high computation throughput, 512KB of embedded Flash for firmware and data logging, and a cryptographic capability highlighted in distributor classifications (crypto, multi-rate metering support). The device operates from a 1.2V core / 3.3V I/O supply arrangement, matching standard industrial logic levels.
Technically, the dual Cortex-M4 cores with FPU (M4F) allow deterministic partitioning: one core can run closed-loop metrology sampling while the other handles protocol stacks and user interfaces, reducing real-time contention. Industrial temperature grading (industrial grade per distributor data) supports harsh-environment deployment.
Typical applications include polyphase energy meters, industrial control panels, building automation controllers, and secure data concentrators where segregated processing and metering accuracy are required.
Design consideration: budget Flash and SRAM carefully across the two cores, and verify power sequencing of the 3.3V I/O domain against the core supply during layout.
This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing tiers, drop-in alternatives, and cross-reference guidance in one place.
直接替换替代料： ATSAM4CMP8CA-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： ATSAM4CMP8CA-AUR （相同外形与封装尺寸） ——差异在于 Core Processor, Packaging, Mounting Type, Series, Program Memory Size.
快速对比工具——选择替代料号进行并排对比：
ATSAM4CMP8CC-AUR
✅ 直接替换✓ 有现货
$2.95 / 个
查看数据手册 →ATSAM4CMP32CA-AUR
✅ 直接替换✓ 有现货
$6.25 / 个
查看数据手册 →ATSAM4CMP16CA-AUR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAM4CMP8CA-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 Size | 512KB (512K x 8) Flash |
| RAM Size | 128KB |
| 电源电压 | 1.2V / 3.3V |
| Series | SAM4CM |
| 封装 | 100-LQFP (14x14 mm) |
| 安装类型 | Surface Mount |
| Number of Terminals | 100 |
| Terminal Form | Gull Wing |
| Package Shape | Square (LFQFP) |
| Temperature Grade | Industrial |
| Packaging | Tape & Reel (T/R) |
| Product Type | MCU, 32-bit, RISC microcontroller |
| Special Features | Crypto, multi-rate metering (per distributor classification) |
ATSAM4CMP8CA-AUR square (lfqfp) 引脚配置指南
ATSAM4CMP8CA-AUR（square (lfqfp) 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： ATSAM4CMP8CA-AUR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4CMP8CA-AUR 适用于 6 应用s: Polyphase Energy Metering, Industrial Control and Automation, Building Automation Controllers, Secure Data Concentrators, Test and Measurement Instrumentation, Motor Control and Power Conversion.
Polyphase Energy Metering
The ATSAM4CMP8CA-AUR fits polyphase electricity metering because FindIC classifies the SAM4CM family as a 7-channel, high-accuracy, multi-rate metering platform with cryptographic support. Its dual 120 MHz Cortex-M4/M4F cores allow deterministic separation: one core samples current and voltage channels in a fixed loop for metrology accuracy, while the second core handles tariff switching, communication, and display tasks without jittering measurement timing. With 512KB Flash and 128KB SRAM, the device stores multi-rate tariff tables, load profiles, and event logs on-chip. Placed at the center of the meter PCB with its 3.3V I/O domain interfacing to RS-485 or PLC communication PHYs, the MCU delivers single-chip metering plus protocol processing, reducing BOM cost compared to discrete metering ASIC plus MCU two-chip designs.
推荐
Industrial Control and Automation
In industrial controllers, the ATSAM4CMP8CA-AUR provides the compute headroom of a 120 MHz dual-core Cortex-M4 with hardware FPU (M4F), enabling floating-point PID loops and protocol conversion in one device. The industrial temperature grade supports cabinet-mounted electronics exposed to wide ambient swings, while the 100-pin LQFP offers enough GPIO for relay drives, indicator LEDs, and sensor multiplexing. The 512KB Flash accommodates firmware plus field-upgradeable configuration, and the 128KB SRAM buffers Modbus/CanFrame traffic. The second core can dedicate itself to a real-time safety scan while the first runs HMI and networking stacks, a partitioning strategy that shortens development versus interrupt-juggling on a single core. Its 3.3V logic simplifies interfacing with standard industrial transceiver ICs.
推荐
Building Automation Controllers
Building automation nodes benefit from the ATSAM4CMP8CA-AUR's balance of processing power and integration. The dual-core architecture lets one Cortex-M4F core run the BACnet or proprietary protocol stack while the other manages I/O scanning of temperature, occupancy, and damper feedback signals at fixed intervals, improving loop determinism. The 512KB Flash holds protocol stacks plus scheduling logic, and the crypto feature highlighted in distributor data supports secure commissioning and encrypted communication with building management systems. The industrial grade and 3.3V supply align with typical 24V-backed control panels regulated down to 3.3V. The 100-LQFP package provides ample GPIO for multiple sensor channels and actuator drives within a compact 14x14 mm footprint suitable for dense controller boards.
推荐
Secure Data Concentrators
Data concentrators in AMI (advanced metering infrastructure) networks aggregate traffic from many meters, and the ATSAM4CMP8CA-AUR suits this role through its combination of dual-core throughput and on-chip cryptographic support noted by FindIC. One core can service meter-bus or RF-module communication while the second performs encryption/decryption and uplink protocol handling, so security processing does not stall data collection. The 120 MHz clock and M4F floating-point units handle packet processing and any analytics pre-aggregation, while 512KB Flash stores firmware, keys, and queue structures in 128KB SRAM. The industrial temperature grade matches outdoor or cabinet-mounted concentrator hardware, and the 100-pin LQFP supplies the GPIO and multiple serial interfaces needed to connect several communication PHYs simultaneously.
推荐
Test and Measurement Instrumentation
Benchtop and portable test instruments use the ATSAM4CMP8CA-AUR as a control and preprocessing MCU. The 120 MHz dual-core Cortex-M4/M4F with hardware FPU performs fast floating-point scaling, calibration interpolation, and trigger logic, while the second core services the front panel, USB or UART interfaces, and display refresh independently, keeping measurement paths responsive. The 512KB Flash stores calibration tables and instrument firmware with room for feature expansion; 128KB SRAM buffers sampled data before streaming upstream. The 100-pin LQFP exposes numerous ADC-related and general-purpose pins for analog front-end control, and the industrial temperature grade suits instruments used in varied lab and field environments. Its 3.3V I/O connects directly to common front-end and communication ICs.
推荐
Motor Control and Power Conversion
The ATSAM4CMP8CA-AUR supports motor control applications where its dual-core 120 MHz Cortex-M4F cores execute field-oriented control (FOC) arithmetic with hardware floating point. One core runs the current loop and PWM update at fixed rate for deterministic torque control, while the second handles communication (Modbus/CAN), supervisory logic, and fault logging without perturbing the control loop timing. The 512KB Flash stores multiple motor profiles and firmware update images, and 128KB SRAM holds current-loop state variables and diagnostic buffers. The industrial grade supports drives in hot enclosures, and the 100-LQFP provides timer and GPIO resources to interface gate drivers and position sensors. The 3.3V I/O domain connects directly to standard isolated gate-driver inputs.
推荐
推荐产品汇总
工程参考数据： ATSAM4CMP8CA-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 | ATSAM4CMP8CC-AUR | ATSAM4CMP32CA-AUR | ATSAM4CMP16CA-AUR |
|---|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | Dual-core ARM Cortex-M4/M4F, 32-bit | Dual-core ARM Cortex-M4/M4F | Dual-core ARM Cortex-M4/M4F | Dual-core ARM Cortex-M4/M4F |
| Max Clock Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Supply Voltage | 1.2V / 3.3V | 1.2V / 3.3V | 1.2V / 3.3V | 1.2V / 3.3V |
| Temperature Grade | Industrial | Industrial (R suffix, T/R) | Industrial (R suffix, T/R) | Industrial (R suffix, T/R) |
关键差异点
- Dual-core architecture for workload partitioning （对比 ATSAM4S16CA-AU)
- Balanced 512KB Flash / 128KB SRAM memory profile （对比 ATSAM4CMP32CA-AUR)
- Metering-optimized feature set （对比 ATSAM4CMP8CC-AUR)
设计说明
The ATSAM4CMP8CA-AUR uses a dual supply arrangement: 1.2V for the core domain and 3.3V for I/O. Verify power sequencing between these domains during startup, since incorrect sequencing can latch up I/O structures. Estimated: at 120 MHz with both cores active, core current draw of a few tens of milliamperes is typical for Cortex-M4 class devices, so a small 1.2V LDO or buck rated at 150-300 mA provides margin. Decouple each supply pin pair with 100 nF ceramics placed within 2 mm of the pins, plus one bulk 10 uF capacitor per domain.
The 100-LQFP (14x14 mm) package has 0.5 mm pitch gull-wing leads requiring solder-mask-defined or non-solder-mask-defined pads per IPC-SM-782A-style convention for LQFP-100 footprints. Route the crystal and its load capacitors close to the oscillator pins with a guard ground; keep high-current switching traces (relay drives, LED strings) away from the analog supply pins. Provide a solid ground plane under the device, and fan out the 25 pins per side with via-in-pad or dog-bone fanout on 2+ layer boards to avoid acid traps at 0.5 mm pitch.
Do not assume all SAM4CM family order codes are interchangeable: the CA/CC suffix denotes different Flash/configuration tiers, so confirm the exact memory size in the current Microchip datasheet before substitution. Also verify the -AUR suffix requirements: it specifies the industrial temperature range and tape-and-reel packing - ordering the wrong packing (tray vs reel) disrupts pick-and-place lines. Finally, when moving from the single-core SAM4S family (e.g., ATSAM4S16CA), remember the dual-core programming model, shared-peripheral ownership, and inter-processor communication differ fundamentally and require firmware redesign, not just recompilation.
合规信息
RoHS/REACH status not stated in the searched distributor snippets; the FindIC classification mentions a Green package description. Confirm via Microchip product page compliance certificates for the exact ordering code.