ATSAM4CMS32CB-AUR - Dual-Core 120MHz Metering MCU 2MB | Microchip
N.º de pieza: ATSAM4CMS32CB-AUR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $5.21 | $5,21 |
| 10 | $4.95 | $49,50 |
| 100 | $4.68 | $468,00 |
| 500 | $4.45 | $2.225,00 |
| 1.000 | $4.2 | $4.200,00 |
ATSAM4CMS32CB-AUR Descripción general
A metering MCU (metering SoC) is a class of microcontroller that integrates dedicated signal-processing and metrology resources to measure electrical energy with high accuracy. In the power-management hierarchy, it sits between general-purpose MCUs and dedicated energy-metering ASICs, combining a general-purpose CPU core with a metrology-oriented co-processing architecture in one chip.
Key features include the unique dual ARM Cortex-M4 architecture, which partitions signal processing from application and communications firmware, 2 MB Flash with on-chip cache for extended program storage, class 0.2 metrology accuracy over a 3000:1 dynamic range, and integrated cryptographic hardware for secure data handling. The 10-bit ADC and 57 GPIOs support direct sensing front-ends and rich peripheral connectivity.
Technically, the SAM4CM family is a seamless extension of Atmel's proven SAM4 line: one core runs metrology DSP routines while the second runs protocol stacks and application logic, with parallel memory expansion for program and data growth. Partitioned firmware domains reduce real-time contention and simplify certification of metering algorithms.
Typical applications include residential and single-phase energy meters, industrial sub-metering, smart-grid nodes, and power-quality monitoring equipment, where 0.2-class accuracy across a wide dynamic range is mandatory.
Design consideration: budget the 120 MHz dual-core clock tree and decouple the 1.62-3.6 V rail carefully; metrology accuracy depends on a clean analog supply for the ADC front-end.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas directas para ATSAM4CMS32CB-AUR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAM4CMS32CB-AUR (mismo factor de forma y huella) — difiere en RoHS Status, Package, Operating Temperature, Packaging, Core.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAM4CMS32CA-AUR
✅ Sustitución directa✓ En stock
$9.75 / unidad
Ver hoja de datos →ATSAM4SD32BA-AU
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$9.45 / unidad
Ver hoja de datos →ATSAM4CMS32CB-AUR Valores máximos y características eléctricas
| Core Processor | ARM Cortex-M4/M4F dual-core |
| Core Size | 32-bit |
| Max Clock Frequency | 120 MHz |
| Flash Memory | 2 MB (2M x 8) |
| SRAM | 304 KB |
| Cache | On-chip cache |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Temperatura de funcionamiento | -40C to +85C |
| ADC Resolution | 10 bit |
| GPIO Count | 57 |
| Metrology Accuracy | Class 0.2, dynamic range 3000:1 |
| Security Features | Crypto hardware |
| Encapsulado | 100-LQFP (14x14 mm) |
| Tipo de montaje | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Estado RoHS | Compliant (Lead free / RoHS, Green) |
| Target Application | Residential and single-phase metering |
Guía de configuración de pines de ATSAM4CMS32CB-AUR 100-lqfp (14x14 mm)
Configuración de pines para ATSAM4CMS32CB-AUR (encapsulado 100-lqfp (14x14 mm)). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para ATSAM4CMS32CB-AUR.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATSAM4CMS32CB-AUR es adecuado para 6 aplicacións: Residential Smart Energy Meters, Industrial Sub-Metering and Panel Monitoring, Smart Grid Communication Nodes, Power Quality Monitoring Equipment, Solar Inverter and Microinverter Control, Battery-Powered Data Loggers and IoT Meters.
Residential Smart Energy Meters
The ATSAM4CMS32CB-AUR is architected specifically for residential single-phase energy metering: Microchip specifies class 0.2 metrology accuracy over a 3000:1 dynamic range and an industrial -40C to +85C operating range, exactly the envelope residential meters must meet across load conditions from standby to overload. One Cortex-M4F core executes the metrology DSP chain (sampling, filtering, energy accumulation) using the 10-bit ADC and on-chip cache, while the second core runs DLMS/COSEM communications, tamper detection, and display firmware in a separate partition, eliminating real-time contention. With 2 MB Flash, full protocol stacks and data logging fit without external memory. Placed directly on the meter mainboard, the device replaces discrete metrology ASIC + MCU pairs, reducing BOM count and certification effort while its crypto hardware secures billing data.
Recomendado
Industrial Sub-Metering and Panel Monitoring
In industrial distribution panels, the ATSAM4CMS32CB-AUR measures per-circuit energy consumption with metering-grade accuracy: the class 0.2 / 3000:1 dynamic range spec keeps readings valid from light night-shift loads to motor inrush, and the 120 MHz dual-core architecture sustains simultaneous harmonic analysis and Modbus/TCP or RS-485 reporting. The dual-core partitioning means adding or updating communications firmware never disturbs the timing-critical metrology loop, which matters for revenue-grade sub-meters subject to periodic accuracy audits. The 57 GPIOs drive breakers, relays, and status LEDs, while the 10-bit ADC front end interfaces directly to current transformers through simple anti-alias filtering. The 1.62-3.6 V rail simplifies integration with panel 3.3 V logic, and the crypto engine protects tariff data against manipulation in commercial billing environments.
Recomendado
Smart Grid Communication Nodes
The ATSAM4CMS32CB-AUR serves as the measurement brain of smart-grid nodes that combine metering with PLC, RF-mesh, or cellular backhaul. Its dual Cortex-M4 cores at 120 MHz allocate one core to continuous 0.2-class energy sampling and the other to running protocol stacks and security, with 304 KB SRAM providing working buffers for encrypted packet assembly and load-profile logging in the 2 MB Flash. The on-chip crypto hardware accelerates key exchange and message authentication required by utility security standards, while the 3000:1 dynamic range preserves data quality across solar-export and reverse-flow scenarios. Because communications firmware evolves faster than metrology code, the partitioned memory map allows over-the-air updates of the application core without recertifying the metrology domain, reducing fleet-maintenance risk.
Recomendado
Power Quality Monitoring Equipment
Power-quality analyzers benefit from the ATSAM4CMS32CB-AUR's combination of 120 MHz dual-core DSP throughput and a metrology-grade measurement chain. One core samples voltage and current channels through the 10-bit ADC, computing RMS, THD, sags, swells, and energy registers in real time, while the other core manages the UI, storage, and network interfaces over the 57 GPIOs and serial peripherals. The 304 KB SRAM supports waveform-capture ring buffers, and the on-chip cache smooths Flash access latency during sustained DSP workloads. The -40C to +85C industrial rating allows deployment in outdoor switchgear and rooftop combiner boxes, and the 1.62-3.6 V supply integrates with standard isolated front ends. The 3000:1 dynamic range keeps low-current harmonic readings quantifiable even near no-load conditions.
Recomendado
Solar Inverter and Microinverter Control
Grid-tied solar inverters require simultaneous, accurate energy metering and real-time control - a pairing the ATSAM4CMS32CB-AUR provides in a single chip. The metrology core computes export/import energy at class 0.2 accuracy over a 3000:1 dynamic range, satisfying feed-in billing requirements even at dawn and dusk generation levels, while the application core executes MPPT, grid-sync, and protection algorithms at 120 MHz. The 10-bit ADC and 57 GPIOs connect to current-sense channels, gate drivers, and relays, and the crypto engine supports utility-mandated secure firmware updates. The industrial temperature range and 1.62-3.6 V supply suit outdoor NEMA enclosures, and 2 MB Flash accommodates grid-code tables for multiple regions without external memory, simplifying variant management across international markets.
Recomendado
Battery-Powered Data Loggers and IoT Meters
For battery-backed metering loggers, the ATSAM4CMS32CB-AUR pairs its dual-core 120 MHz capability with low-voltage operation down to 1.62 V, allowing direct operation from a 1.8 V regulated rail or supercap-backed 3 V domain. The architecture enables burst operation: the application core wakes, harvests metrology samples and communication packets, then lets the metrology core accumulate energy in the 304 KB SRAM between radio sessions. On-chip cache reduces Flash wake frequency, and the crypto hardware secures logged consumption data end-to-end. The -40C to +85C rating covers unconditioned outdoor enclosures typical of gas/water meter retrofit gateways. With 2 MB Flash, years of interval data fit on-chip, eliminating SD-card wear-out failure modes and reducing the BOM for sealed, maintenance-free products.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAM4CMS32CB-AUR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAM4CMS32CA-AUR | ATSAM4SD32BA-AU |
|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP - same family |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | Dual ARM Cortex-M4/M4F | Dual ARM Cortex-M4/M4F | Single ARM Cortex-M4 |
| Metrology Class | Class 0.2, 3000:1 dynamic range | Class 0.2, 3000:1 dynamic range | Not metrology-specified |
Diferenciadores clave
- Dual-core metrology partitioning (frente a ATSAM4SD32BA-AU)
- Metrology-grade accuracy on-chip (frente a ATSAM4CMS32CA-AUR)
- Integrated crypto hardware (frente a ATSAM4SD32BA-AU)
Notas de diseño
Design the 3.3 V rail with low-ripple switching regulation followed by an LC or LDO stage feeding the SAM4CM's analog supply domain. The metrology chain depends on the 10-bit ADC achieving class 0.2 accuracy over 3000:1 dynamic range, so ripple on the analog rail translates directly into metering error at low-current readings. Separate the analog ground from the communications/RF ground with a single-point star connection, and place 100 nF ceramic decoupling at every VDD pin pair within 2 mm of the LQFP package, per Microchip SAM4CM layout guidance.
The 100-LQFP 14x14 mm footprint supports 0.5 mm pitch leads; use solder-mask-defined pads per IPC-recommended LQFP land patterns and add a perimeter via fence around the package tying both ground planes. Keep the crystal (for the 120 MHz-class clock tree) and its load capacitors within 5 mm of the oscillator pins, guarding them with ground traces. Route current-transformer analog inputs as short, symmetric, shielded pairs to the ADC pins to preserve the 3000:1 dynamic range at the low end.
Do not treat the ATSAM4CMS32CB-AUR as a generic SAM4: the second core and its memory partitioning require the SAM4CM-specific startup and linker configurations. Firmware built for single-core SAM4SD parts will not exercise the metrology co-processor, silently degrading accuracy. Also verify the exact Flash density of family variants (CA vs CB suffix) before reusing a binary image, and confirm -AUR tape-and-reel vs -AU tray handling in your pick-and-place feeders.
Información de cumplimiento
Lead free / RoHS Compliant per distributor records (Besen Chips); Mouser lists LQFP Green packaging. REACH and conflict-minerals declarations not found in provided data - consult Microchip compliance portal.