ATSAM4CMP16CC-AUR - Dual Cortex-M4 120MHz MCU | Microchip
MPN: ATSAM4CMP16CC-AUR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.9 | $4.90 |
| 10 | $4.6 | $46.00 |
| 100 | $4.35 | $435.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $4.08 | $4,080.00 |
ATSAM4CMP16CC-AUR Overview
A metering SoC is a class of microcontroller that combines a general-purpose MCU core with dedicated metrology computation resources, enabling smart energy meters to measure voltage, current, power, and energy with high accuracy on a single chip. Within the power management hierarchy, it sits above general-purpose MCUs by integrating metrology hardware accelerators, and it extends Atmel's proven SAM4 family and SAM4C family architecture.
Key features include dual Cortex-M4/M4F cores operating at up to 120 MHz with hardware floating-point and DSP instructions, 1 MB Flash memory for firmware plus data logging, and support for poly-phase metering up to class 0.2 metrology accuracy over a dynamic range of 3000:1. The integrated crypto engine supports secure firmware and data protection, essential for modern utility infrastructure, and the part is specified for the full industrial temperature range.
Architecturally, the SAM4CMP16 is a seamless extension of the SAM4C family: one core is dedicated to metrology computation while the second core handles communication, display, and application tasks. This partitioning eliminates timing conflicts between measurement and protocol stacks such as DLMS/COSEM or M-Bus, improving both measurement integrity and system responsiveness.
Typical applications include residential and poly-phase electricity meters, industrial sub-meters, and secure industrial control systems requiring high-accuracy energy measurement with encrypted communication.
When designing with this device, partition metrology routines on one core early in the project and validate class 0.2 accuracy across the full 3000:1 dynamic range with your front-end circuitry, since sensor selection directly affects achievable accuracy.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATSAM4CMP16CC-AUR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAM4CMP16CU-AUR
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATSAM4CMP16CC-AUT
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATSAM4CMS16CB-AUR
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATSAM4CMS16CC-AUR
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATSAM4CMP16CA-AUR
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
ATSAM4CMP16CC-AUR Maximum Ratings & Electrical Characteristics
| Core Processor | ARM Cortex-M4/M4F dual-core |
| Core Size | 32-bit |
| Maximum Clock Frequency | 120 MHz |
| Flash Memory | 1 MB (1M x 8) |
| SRAM | 152 KB |
| Number of Cores | 2 |
| Target Application | Poly-phase metering, class 0.2 accuracy |
| Metrology Dynamic Range | 3000:1 |
| Metrology Channels | 7 channels |
| Security | Integrated cryptographic acceleration |
| Package | LQFP-100 (14x14 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | Industrial range |
| RoHS Status | Compliant |
ATSAM4CMP16CC-AUR lqfp-100 (14x14 mm) Pin Configuration Guide
Pin configuration for ATSAM4CMP16CC-AUR (lqfp-100 (14x14 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATSAM4CMP16CC-AUR.
Refer to the datasheet for full pin configuration.
Typical Applications
ATSAM4CMP16CC-AUR is suitable for 6 applications: Residential Smart Electricity Meters, Poly-Phase Industrial Energy Meters, Sub-Metering and Energy Monitoring Gateways, Secure Industrial Control Systems, Smart Grid Concentrators and Data Collectors, Solar Inverter and Renewable Energy Metering.
Residential Smart Electricity Meters
The ATSAM4CMP16CC-AUR is purpose-built for single-phase residential smart meters, delivering class 0.2 metrology accuracy over a 3000:1 dynamic range that covers everything from standby loads below 1 W to full household peak current on a single chip. One 120 MHz Cortex-M4F core executes the metering DSP algorithms with fixed latency while the second core runs DLMS/COSEM communication, tamper detection, and LCD driving, preventing protocol interrupts from corrupting measurement sampling. The integrated crypto engine secures billing data and firmware updates required by utility security mandates. This eliminates the separate metrology ASIC previously needed, reducing BOM cost and board area in the meter's constrained enclosure.
Recommended
Poly-Phase Industrial Energy Meters
For three-phase (poly-phase) industrial and commercial metering, the ATSAM4CMP16CC-AUR provides the class 0.2 accuracy and 3000:1 dynamic range that utility billing standards demand, with seven metrology channels supporting multiple phase voltage and current inputs in the LQFP-100 footprint. The dual-core 120 MHz architecture dedicates one Cortex-M4F core to simultaneous three-phase sampling and power computation while the second core manages industrial protocols and load-profile logging into the 1 MB Flash and 152 KB SRAM. Because metrology and communication run on isolated cores, harmonic-rich industrial loads do not degrade billing accuracy, and the integrated crypto protects revenue data over the meter's service life.
Recommended
Sub-Metering and Energy Monitoring Gateways
In commercial building sub-metering and energy management systems, the ATSAM4CMP16CC-AUR offers a cost-effective single-chip solution combining accurate energy measurement and communication. Its 1 MB Flash stores extensive load-profile data for tenant billing, and the 152 KB SRAM buffers records during network outages. The 120 MHz Cortex-M4F cores can simultaneously run metrology and a TCP/IP or Modbus stack, and the crypto engine authenticates meter readings sent upstream to energy dashboards. Compared with discrete MCU-plus-ASIC designs, the SAM4CM reduces component count and achieves class 0.2 accuracy over a 3000:1 dynamic range across widely varying tenant loads.
Recommended
Secure Industrial Control Systems
Distributor listings for the ATSAM4CMP16CC-AUR highlight its use in high-reliability industrial control and secure data processing. The dual-core Cortex-M4F architecture at 120 MHz provides DSP capability for sensor processing while the second core supervises control logic and secure boot, and the integrated crypto engine supports authenticated firmware updates and encrypted field-bus communication demanded by modern industrial security frameworks. The 1 MB Flash accommodates protocol stacks and application code, and the industrial temperature rating suits factory-floor environments. Its LQFP-100 package offers abundant GPIO and peripheral multiplexing for motor, valve, and sensor interfaces in compact controllers.
Recommended
Smart Grid Concentrators and Data Collectors
The ATSAM4CMP16CC-AUR fits smart grid data concentrators that poll many meters and aggregate readings over WAN links. Its 1 MB Flash stores meter tables and firmware for both functions, and the 152 KB SRAM buffers burst collections from hundreds of endpoints. One 120 MHz Cortex-M4F core manages the local meter bus while the other runs the cellular or Ethernet uplink protocol, an ideal split for the dual-core architecture. The crypto engine encrypts aggregated billing data in transit, and the industrial temperature rating plus RoHS-compliant green packaging support outdoor cabinet installations, making it a complete single-chip concentrator controller.
Recommended
Solar Inverter and Renewable Energy Metering
Grid-tied solar inverters and renewable energy systems require billing-grade energy measurement on both generation and grid sides, which the ATSAM4CMP16CC-AUR addresses with class 0.2 accuracy over a 3000:1 dynamic range - essential for capturing low irradiance generation as well as peak output. Its seven metrology channels and 120 MHz dual-core Cortex-M4F architecture measure multiple energy flows simultaneously, while the second core handles inverter supervision, MPPT communication, and grid-code compliance logging. The integrated crypto supports utility anti-tampering requirements, and the 1 MB Flash stores event and production logs, allowing one chip to replace separate metering and control MCUs in the inverter enclosure.
Recommended
Recommended Products Summary
Engineering reference data for ATSAM4CMP16CC-AUR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAM4CMP16CU-AUR | ATSAM4CMP16CC-AUT | ATSAM4CMS16CB-AUR | ATSAM4CMS16CC-AUR |
|---|---|---|---|---|---|
| Package | LQFP-100 (14x14 mm) | LQFP-100 (14x14 mm) - same | LQFP-100 (14x14 mm) - same | LQFP-100 (14x14 mm) - same | LQFP-100 (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Configuration | Dual-core Cortex-M4/M4F | Dual-core Cortex-M4/M4F | Dual-core Cortex-M4/M4F | Single-core Cortex-M4F | Single-core Cortex-M4F |
| Max Clock Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 1 MB | 1 MB | 1 MB | 1 MB | 1 MB |
| Crypto Acceleration | Yes | Yes | Yes | Yes | Yes |
| Packaging / Ordering Variant | Tape & Reel, industrial (AUR) | Tape & Reel, alternate temp grade | Tray | Tape & Reel | Tape & Reel |
Key Differentiators
- Dual-core parallel metrology and application processing (vs ATSAM4CMS16CB-AUR)
- Single-chip metering integration with crypto (vs ATSAM4CMP16CA-AUR)
- Class 0.2 accuracy over 3000:1 dynamic range (vs Generic Cortex-M4 MCUs)
Design Notes
Do not assume all SAM4CM family members are identical: the 'P' (poly-phase, dual-core) and 'S' (single-core) suffixes change the firmware model fundamentally. Firmware written for dual-core parallel metrology will not run unmodified on ATSAM4CMS16 parts, and vice versa. Additionally, when substituting suffix variants, confirm the crypto feature set and temperature grade in the ordering code decoder of the ATSAM4CM datasheet before release, since 'C', 'U', and 'A' suffixes encode grade and package options.
Estimated: at 120 MHz, a Cortex-M4 class core typically draws tens of mA per core; with two cores active, budget supply and decoupling for the combined peak plus flash write current. Use separate ferrite beads or RC filters on the analog metrology supply domain versus the digital core supply - mixed-signal noise coupling into the ADC front end directly degrades the class 0.2 accuracy target. Follow the SAM4CM family power tree in the datasheet and place 100 nF decoupling capacitors at every supply pin pair on the LQFP-100.
On a metering PCB, keep the ATSAM4CMP16CC-AUR's metrology ADC input traces (voltage divider and current sensor outputs) short, differential where possible, and physically separated from switching supplies and communication drivers. A solid ground plane under the LQFP-100 with no digital return paths crossing the analog front-end region preserves the 3000:1 dynamic range. Place crystal and its load capacitors within a few millimeters of the oscillator pins and guard with ground, per Microchip SAM4CM reference design layouts.
Compliance Information
RoHS compliant and lead-free per TrustCompo and Microchip green ('Green' package designation in datasheet titles) listings. AEC-Q100 status not stated for this part; the SAM V70 comparison listing references automotive for that series, not SAM4CM.
