ATSAM4CMS16CB-AU - Dual-Core Cortex-M4 120MHz MCU | Microchip
N.º de pieza: ATSAM4CMS16CB-AU ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $8.92 | $8,92 |
| 10 | $8.02 | $80,20 |
| 100 | $6.95 | $695,00 |
| 500 | $6.32 | $3.160,00 |
| 1.000 | $5.8 | $5.800,00 |
ATSAM4CMS16CB-AU Descripción general
A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the heart of embedded systems. The SAM4CM sits within the broader hierarchy of ARM Cortex-M based 32-bit MCUs, part of Microchip's SAM4 family, and is specifically architected as a system-on-chip (SoC) solution for metering applications where signal processing and communications firmware must run in independent, isolated partitions.
Key features include the unique dual ARM Cortex-M4/M4F core architecture, which allows metrology (DSP-heavy) computation and application/communications code to execute on separate cores; hardware cryptographic acceleration as highlighted by distributors (CRYPTO designation); and a supply range of 1.62V to 3.6V per verified distributor data. The on-chip cache and up to 2 MB Flash support capability in the wider family gives headroom for complex firmware images.
According to Microchip, the SAM4CMS16 is a system-on-chip solution for residential and single-phase metering applications achieving up to class 0.2 metrology accuracy over a dynamic range of 3000:1 across an industrial temperature range. The dual-core partitioning enables secure, independent firmware domains that simplify metering certification workflows.
Typical applications include single-phase energy meters, smart grid endpoints, industrial power monitoring, and general-purpose control tasks benefiting from dual-core isolation and DSP instructions.
Design consideration: choose the CM (metering) variant only when class 0.2 measurement or core isolation is genuinely required; the single-core SAM4S in the same LQFP-100 footprint is a lower-cost fit for general control.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas directas para ATSAM4CMS16CB-AU — 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 ATSAM4CMS16CB-AU (mismo factor de forma y huella) — difiere en Core Processor, Core Size, Series, Application Target, Package Shape.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAM4CMS16CA-AU
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ATSAM4CMS16CB-AUR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAM4C16CB-AU
✅ Sustitución directa✓ En stock
$5.85 / unidad
Ver hoja de datos →ATSAM4C16CA-AU
✅ Sustitución directa✓ En stock
$9.56 / unidad
Ver hoja de datos →ATSAM4S16CB-AU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAM4CMS16CB-AU Valores máximos y características eléctricas
| Core Processor | ARM Cortex-M4/M4F, dual-core |
| Core Size | 32-bit |
| Frecuencia de reloj máxima | 120 MHz |
| Program Memory Size | 1 MB (1M x 8) Flash |
| RAM Size | 128 KB |
| Supply Voltage Range | 1.62 V to 3.6 V |
| Series | SAM4CM |
| Encapsulado | 100-LQFP (14x14 mm) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40C to +85C (industrial) |
| Número de pines | 100 |
| Terminal Form | Gull Wing |
| Package Shape | Square (LFQFP) |
| Crypto | Yes (CRYPTO designation) |
| Application Target | Single-phase metering, class 0.2 accuracy, 3000:1 dynamic range |
| Temperature Grade | Industrial |
| Estado RoHS | Green (RoHS compliant per distributor listing) |
Guía de configuración de pines de ATSAM4CMS16CB-AU square (lfqfp)
Configuración de pines para ATSAM4CMS16CB-AU (encapsulado square (lfqfp)). 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 ATSAM4CMS16CB-AU.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ATSAM4CMS16CB-AU es adecuado para 6 aplicacións: Single-Phase Smart Energy Meters, Industrial Power Monitoring, Secure IoT Gateways and Grid Endpoints, Dual-Core Partitioned Embedded Control, Battery-Powered and Portable Instrumentation, Smart Home Energy Submeters.
Single-Phase Smart Energy Meters
The ATSAM4CMS16CB-AU was purpose-built for this application: per Microchip, the SAM4CMS16 achieves up to class 0.2 metrology accuracy over a dynamic range of 3000:1 in residential and single-phase metering across the industrial temperature range. The dual Cortex-M4/M4F cores let the signal-processing metrology firmware (FFT, filtering, RMS computation) run in a partition isolated from the communications and application stack, which simplifies utility certification and firmware updates without compromising measurement integrity. The hardware crypto block secures DLMS/COSEM communications and secure firmware boot. Place the MCU at the heart of the metering board with a precision analog front end; the on-chip cache sustains deterministic DSP throughput at 120 MHz without external memory for typical metering images.
Recomendado
Industrial Power Monitoring
Three-phase and single-phase power quality monitors benefit from the ATSAM4CMS16CB-AU's dual-core architecture: one Cortex-M4 core executes continuous voltage/current sampling and harmonic analysis while the second handles Modbus RTU/TCP, logging, and human-machine interface tasks. The 1 MB Flash accommodates both the DSP measurement library and a full communication stack simultaneously, and the 128 KB SRAM supports buffering of waveform captures. The industrial -40C to +85C rating and Green RoHS LQFP-100 package suit panel-mounted equipment. The class 0.2-class metrology datapath means accuracy demanded by billing-grade submeters is available without a dedicated metering ASIC, reducing bill-of-materials count; the trade-off is higher unit cost than the single-core SAM4S in the same footprint.
Recomendado
Secure IoT Gateways and Grid Endpoints
The ATSAM4CMS16CB-AU's hardware cryptographic acceleration (CRYPTO designation per distributor listings) makes it attractive for grid endpoints, concentrators, and IoT gateways that must authenticate firmware and encrypt telemetry. One Cortex-M4 core can run the communications stack (RS-485, PLC, or cellular modems over UART/USB) while the second core isolates security-critical key handling and application logic. The 1.62V to 3.6V supply range simplifies powering from industrial 3.3V rails, and the 120 MHz clock with on-chip cache delivers adequate headroom for TLS-class workloads. The 100-pin LQFP provides sufficient GPIO and peripherals to bridge multiple field buses in a single device, consolidating functions that would otherwise require a separate security IC.
Recomendado
Dual-Core Partitioned Embedded Control
Any embedded control system that benefits from running safety- or certification-relevant code in an isolated partition from user-facing firmware is a fit for the ATSAM4CMS16CB-AU. The dual ARM Cortex-M4/M4F architecture, described by distributors as supporting 'implementation of signal processing, application and communications firmware in independent partitions,' enables functional separation without a second chip. The floating-point (M4F) capability accelerates control loops and sensor fusion, while 1 MB Flash leaves room for over-the-air update images. Compared to running two discrete MCUs, this part cuts board area, simplifies inter-core messaging over on-chip fabric, and reduces sourcing complexity - a meaningful advantage in industrial drives, HVAC controllers, and medical monitoring front ends.
Recomendado
Battery-Powered and Portable Instrumentation
The wide 1.62V to 3.6V supply range and 32-bit Cortex-M4 efficiency make the ATSAM4CMS16CB-AU viable in battery-operated instruments such as portable power analyzers, clamp meters, and data loggers. Running from a single Li-ion cell (3.0V to 3.6V fresh-to-empty window) or a 3.3V LDO rail keeps the power tree simple. The M4F core's single-cycle MAC and floating-point unit accelerate calibration math and waveform math in handheld test tools, while dual-core partitioning lets a low-duty-cycle second core manage housekeeping tasks. The industrial temperature rating tolerates field conditions, and the 100-pin LQFP exposes enough ADC channels and GPIO for multi-signal front ends in a 14x14 mm footprint.
Recomendado
Smart Home Energy Submeters
Smart-home energy monitoring hubs and DIN-rail submeters use the ATSAM4CMS16CB-AU to deliver billing-adjacent accuracy (class 0.2 over 3000:1 dynamic range per Microchip) while running Wi-Fi, Zigbee, or Ethernet bridge firmware on the second core. The dual-core isolation allows the measurement partition to be validated once and left untouched while consumer features (mobile app protocols, OTA updates) evolve rapidly. The crypto engine protects against meter-tampering attacks that are increasingly regulated in residential metering. With 1 MB Flash there is headroom for both the metrology library and a full TCP/IP stack with TLS, avoiding external Flash in compact designs, and the industrial-grade LQFP-100 package supports automated reflow assembly in volume.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAM4CMS16CB-AU — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAM4CMS16CA-AU | ATSAM4C16CB-AU | ATSAM4C16CA-AU | ATSAM4S16CB-AU |
|---|---|---|---|---|---|
| Package | 100-LQFP (14x14 mm) | 100-LQFP (14x14 mm) - same | 100-LQFP - same | 100-LQFP - same | 100-LQFP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology (Atmel legacy) | Microchip Technology (Atmel legacy) | Microchip Technology |
| Core Architecture | Dual-core ARM Cortex-M4/M4F | Dual-core ARM Cortex-M4/M4F | Single-core ARM Cortex-M4 | Single-core ARM Cortex-M4 | Single-core ARM Cortex-M4 |
| Max Clock Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Hardware Crypto | Yes (CRYPTO designation) | Yes (CRYPTO designation) | Yes (Smart Energy Metering family) | Yes (Smart Energy Metering family) | No (general-purpose SAM4S) |
| Target Application | Class 0.2 single-phase metering, 3000:1 dynamic range | Class 0.2 single-phase metering | Smart energy metering (single-core) | Smart energy metering (single-core) | General-purpose embedded control |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | Industrial | Industrial | Industrial |
Diferenciadores clave
- Dual-core Cortex-M4/M4F with independent firmware partitions (frente a ATSAM4S16CB-AU)
- Class 0.2 metrology accuracy with 3000:1 dynamic range (frente a ATSAM4S16CB-AU)
- Higher SRAM configuration than same-class single-core parts (frente a ATSAM4C16CB-AU)
Notas de diseño
Do not assume dual-core equivalence when substituting single-core SAM4C or SAM4S parts on the same LQFP-100 footprint. Although the electrical footprint is pin-compatible, the firmware must be substantially re-architected: dual-core partitioning, inter-core communication, and the metrology library are SAM4CM-specific. If class 0.2 metering certification is a project requirement, only SAM4CM variants preserve the validated measurement path. Re-verify peripheral pin multiplexing against the SAM4CM datasheet before finalizing the PCB, even for same-family swaps.
Design the supply for a nominal 3.3V rail within the verified 1.62V to 3.6V operating range. Metering applications demand stable analog supply for measurement accuracy - Microchip's class 0.2 claim over 3000:1 dynamic range assumes clean power. Place local 100 nF ceramic decoupling at each supply pin pair plus bulk 10 uF per rail. Avoid routing noisy communications or relay-driver currents under the MCU. Estimated: at 120 MHz, core current is on the order of tens of milliamps (verify exact figure in the datasheet power chapter); size the regulator with margin for both cores active.
The 100-LQFP (14x14 mm, 0.5 mm pitch) package requires careful fanout: use 4-mil trace/spacing for escape routing between adjacent pins, and consider a via-in-pad-free dog-bone fanout on a 4-layer board. Reserve ground pour under the device and stitch vias around the perimeter to contain EMI from the 120 MHz core clock - important in metering products subject to conducted/radiated emissions limits. Keep the crystal or oscillator traces short and guarded. Microchip's SAM4 family reference designs for metering provide proven layout patterns worth replicating.
The LQFP-100 plastic package relies on PCB copper for heat spreading. Estimated: a dual-core Cortex-M4 at 120 MHz dissipates on the order of 100-300 mW typical, which with a 14x14 mm LQFP thermal resistance of roughly 50-60 C/W (verify exact theta-JA in the datasheet) yields a junction rise of only a few tens of degrees - generally safe at industrial ambient up to +85C only if ambient does not stack with full load. In sealed meter enclosures, verify junction temperature with worst-case ambient, and reduce core clock or duty-cycle unused cores if margin is tight.
Información de cumplimiento
Mouser lists the part as Green, industrial temperature, RoHS packaging. Formal REACH, halogen-free, and conflict-minerals declarations should be requested from Microchip compliance documentation; distributor snippets do not confirm these.