ATSAM4CMP8CC-AU - Dual Cortex-M4 120MHz 512KB MCU | Microchip
MPN： ATSAM4CMP8CC-AU ✓ 啟用中ATSAM4CMP8CC-AU 概覽
A metrology microcontroller (MCU) is a class of microcontroller that integrates a high-accuracy analog front end and metrology computation engine alongside the general-purpose processing core. Within the power-management IC hierarchy, the ATSAM4CMP8CC-AU sits in the ARM Cortex-M4-based SAM4 family - a seamless extension of Atmel's SAM4 and SAM4C families of microcontrollers - combining compute, communications, and metrology in a single SoC.
Key features include the unique dual ARM Cortex-M4 architecture, which supports independent implementation of signal processing, application, and communications firmware in separate partitions; up to class 0.2 metrology accuracy over a dynamic range of 3000:1; industrial temperature range operation (-40C to +85C); and embedded crypto functionality for smart-grid security. On-chip cache and SRAM of up to 304 Kbytes across the SAM4CM series support demanding firmware workloads.
Technical depth: the dual-core Cortex-M4F (with hardware floating point) partitions metrology from communications tasks, improving determinism and security isolation. The ability to extend program and data memory via parallel memory interfaces allows designs to grow beyond embedded Flash limits. Firmware is developed through the SAM4 ecosystem with standard ARM CMSIS tooling.
Typical applications include poly-phase energy meters, residential smart meters, smart grid security and communications nodes, and industrial metering equipment requiring class 0.2 accuracy across a 3000:1 dynamic range.
Design consideration: partition metrology firmware and communication stacks across the two Cortex-M4 cores early in the project; this determines SRAM allocation and crypto key storage strategy and is difficult to change late in development.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 ATSAM4CMP8CC-AU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAM4CMP8CC-AU （相同外形與佔位） — 差異在於 Flash Memory, Metrology Accuracy, Operating Temperature, Series, Packaging.
ATSAM4CMP8CB-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAM4CMP8CC-CU
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ATSAM4C16C-CU
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4C8C-CU
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAM4CMP8CC-AU 最大額定值與電氣特性
| Core Processor | ARM Cortex-M4/M4F (dual-core) |
| Core Size | 32-bit |
| Max Clock Speed | 120 MHz |
| Flash Memory | 512KB (512K x 8) |
| SRAM (series max) | Up to 304 KB with on-chip cache |
| Series | SAM4CM (SAM4C family extension) |
| Metrology Accuracy | Class 0.2, dynamic range 3000:1 |
| Crypto | Yes (embedded crypto engine) |
| 工作溫度 | -40C to +85C (TA) |
| 封裝 | 100-LQFP (14x14 mm) |
| 安裝類型 | Surface Mount |
| Memory Extension | Parallel memory interface for program/data extension |
| Packaging | Tray |
| Green Status | Green (RoHS), per Mouser listing |
ATSAM4CMP8CC-AU 100-lqfp (14x14 mm) 腳位配置指南
ATSAM4CMP8CC-AU（100-lqfp (14x14 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAM4CMP8CC-AU.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAM4CMP8CC-AU 適用於 6 應用s: Poly-Phase Energy Meters, Residential Smart Meters, Smart Grid Security and Communications Nodes, Industrial Metering and Submetering, Signal Processing Embedded Systems, Secure Firmware Update Platforms.
Poly-Phase Energy Meters
The ATSAM4CMP8CC-AU is purpose-built for poly-phase metering: Microchip specifies up to class 0.2 metrology accuracy over a 3000:1 dynamic range across the -40C to +85C industrial temperature range, meeting commercial and industrial meter requirements in a single SoC. One Cortex-M4F core runs the metrology signal-processing chain with its hardware FPU, while the second core independently runs DLMS/COSEM or proprietary communication stacks, improving determinism and security isolation. The integrated crypto engine protects metering data and firmware updates, and the parallel memory interface allows firmware growth beyond the 512KB embedded Flash for multi-tariff, load-profile, and remote-disconnect features.
推薦
Residential Smart Meters
For residential smart meters, the ATSAM4CMP8CC-AU integrates metrology, application processing, and communications in one device, reducing bill of materials and board area in the constrained form factor of a single-phase meter housing. Its 512KB embedded Flash accommodates the metrology firmware, tariff engine, and communication protocol stack, while the dual-core Cortex-M4 architecture isolates utility-critical metering code from modifiable communication firmware - a key smart-grid security property. With class 0.2 accuracy over a 3000:1 dynamic range, it also supports tamper-detection and partial-load billing accuracy requirements that many residential standards demand.
推薦
Smart Grid Security and Communications Nodes
Microchip positions the SAM4CM family as a solution for smart grid security and communications applications. The ATSAM4CMP8CC-AU's embedded crypto engine provides hardware acceleration for authentication and encryption, while the dual Cortex-M4 partitioning keeps key handling and secure boot in a separate firmware partition from the application core. At 120 MHz with Cortex-M4F DSP instructions, each core has headroom for protocol stacks, data aggregation, and signal analysis. The parallel memory extension interface lets designers add external program and data memory as node firmware grows, extending product life in long-deployment grid infrastructure.
推薦
Industrial Metering and Submetering
Industrial submetering panels require accuracy and wide dynamic range at moderate cost. The ATSAM4CMP8CC-AU delivers class 0.2 accuracy across a 3000:1 dynamic range - sufficient for lightly loaded industrial feeders - while its industrial -40C to +85C temperature rating suits unconditioned electrical rooms. One Cortex-M4F core performs continuous multi-channel signal processing with DSP instructions, and the second core services Modbus, DLMS, or Ethernet-gateway firmware. Availability through DigiKey, Mouser, LCSC, and Heisener (2,480 pieces in stock as of 2026-09-20) supports both new designs and repair volumes for installed industrial meter fleets.
推薦
Signal Processing Embedded Systems
Beyond metering, the ATSAM4CMP8CC-AU is a capable dual-core DSP host: the Cortex-M4F cores include hardware single-precision FPU and DSP instructions, running at up to 120 MHz per core. According to the SAM4CM datasheet, the dual architecture supports independent firmware partitions for signal processing and communications, with up to 304KB SRAM plus on-chip cache across the series. Designs that outgrow the 512KB embedded Flash can attach external program and data memory via the parallel memory interface, making the part attractive for vibration sensing, power-quality analysis, and other real-time measurement subsystems.
推薦
Secure Firmware Update Platforms
Utilities require field-updatable meters with cryptographic authentication of firmware images. The ATSAM4CMP8CC-AU supports this with its embedded crypto engine and dual-core partitioning: the metrology/application core continues operating while the second core verifies and installs signed firmware images, keeping power-accuracy interruption minimal. The 512KB Flash supports dual-bank update strategies for the primary image, and external parallel memory can hold staging areas for larger packages. Distributors list this part as an industrial, green, crypto-enabled MCU, making it a natural fit for secure OTA update architectures in metering infrastructure.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAM4CMP8CC-AU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAM4CMP8CB-AU | ATSAM4CMP8CC-CU | ATSAM4C16C-CU | ATSAM4C8C-CU |
|---|---|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP (14x14 mm) - same | 100-LQFP - same family | 100-LQFP - same family |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | Dual ARM Cortex-M4/M4F | Dual ARM Cortex-M4/M4F | Dual ARM Cortex-M4/M4F | Dual ARM Cortex-M4/M4F | Dual ARM Cortex-M4/M4F |
| Max Clock Speed | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 512KB | 512KB | 512KB | 1MB (series) | 512KB |
| Metrology Front End | Yes (class 0.2, 3000:1 DR) | Yes (class 0.2, 3000:1 DR) | Yes (class 0.2, 3000:1 DR) | No | No |
| Embedded Crypto | Yes | Yes | Yes | Yes (SAM4C crypto option) | Yes (SAM4C crypto option) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
主要差異化特點
- Integrated metrology front end with class 0.2 accuracy over 3000:1 dynamic range (對比ATSAM4C16C-CU)
- Fully verified pin-and-package-compatible alternate source (對比ATSAM4CMP8CB-AU)
- Dual-core partitioned architecture for security isolation (對比ATSAM4C8C-CU)
設計說明
Partition firmware across the two Cortex-M4 cores at project start: place metrology signal processing (with its class 0.2 accuracy and 3000:1 dynamic-range budget) in a dedicated partition, and keep communications and crypto firmware separate. The SAM4CM dual-core architecture is designed for this isolation, but retrofitting partitioning after the SRAM map and flash layout are frozen is costly. Use the parallel memory interface only for genuine growth headroom - do not rely on it for code on the metrology core where deterministic access timing matters.
The 100-LQFP (14x14 mm) package has 0.5 mm pin pitch - standard practice for metrology boards applies: keep the analog metrology front-end traces short and routed over a solid ground plane, segregate analog ground from switching-supply ground, and follow the SAM4CM datasheet decoupling scheme at each VDD/VDDIO pin pair. For LQFP hand or rework soldering, verify the exposed pin geometry against the LCSC-provided package diagram before committing to the footprint.
Estimated: meter designs often run continuously for decades, so total power budget matters. Since the exact supply voltage range is not stated in the retrieved web data ([DATA_NEEDED: supply voltage range]), consult the ATSAM4CM datasheet electrical characteristics for VDD/VDDIO ranges and typical core/metrology current at 120 MHz. When sizing the power supply, include the metrology analog front end as a continuous load, and confirm thermal margin for -40C to +85C ambient operation per Microchip's derating data.
合規資訊
Mouser lists the part as 'Green' with crypto functions; the AU ordering suffix denotes Microchip industrial range, RoHS/lead-free matte-tin finish. REACH and conflict-minerals status should be confirmed via Microchip compliance documentation.