ATSAM4LC8CA-CFU - 48MHz Cortex-M4 MCU 512KB Flash | Microchip
Référence : ATSAM4LC8CA-CFU ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.95 | $9,95 |
| 10 | $9.2 | $92,00 |
| 100 | $8.45 | $845,00 |
| 500 | $7.95 | $3 975,00 |
| 1 000 | $7.57 | $7 570,00 |
ATSAM4LC8CA-CFU Présentation
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-system hierarchy (MCU -> embedded processor -> semiconductor IC). The SAM4L family belongs to Microchip's ARM-based flash MCU portfolio, pairing the 32-bit Cortex-M4 RISC core with a rich analog and digital peripheral set for low-power embedded designs.
Key differentiating features include the lowest active power in its class at 90 uA/MHz, deep sleep at just 1.5 uA, and the shortest wake-up time of any Cortex-M4-based device at down to 1.5 us, making it exceptional for battery-powered applications. It integrates hardware cryptography acceleration, an LCD controller, I2S audio interface, DMA, and connectivity peripherals including I2C, SPI, UART/USART, IrDA, LIN, and USB.
Architecturally, the device operates from 1.8V, 2V, 2.3V, or 3.3V supplies and is fabricated for industrial temperature operation from -40C to +85C. The Cortex-M4 core delivers efficient single-cycle DSP instructions, while the SAM4L's peripheral event system and sleepwalking peripherals allow data processing while the CPU sleeps, further reducing system energy consumption.
Typical applications include battery-powered portable instruments, industrial sensor nodes, LCD-based human-machine interfaces, and secure IoT endpoints that leverage the integrated crypto engine.
When designing with this device, plan the power budget around the sleep modes and wake-up latency; the VFBGA ball grid array requires controlled-impedance PCB layout and X-ray-capable inspection equipment for assembly.
This page synthesizes distributor pricing, drop-in SAM4L family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing verified as of 2026-09-20.
Alternatives de remplacement direct pour ATSAM4LC8CA-CFU — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ATSAM4LC8CA-CFU (même facteur de forme et même empreinte) — différant par Flash Memory, Core Processor, Core Size, Mounting Type, Packaging.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ATSAM4LC8CA-CFUR
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAM4LS8CA-CFU
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.41 / unité
Voir la fiche technique →ATSAM4LC4CA-CFU
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ATSAM4LS4CA-CFU
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ATSAM4LC8CA-CFU Valeurs maximales et caractéristiques électriques
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-Bit |
| Maximum Clock Speed | 48 MHz |
| Flash Memory | 512 KB (512K x 8) |
| Tension d'alimentation | 1.8 V / 2 V / 2.3 V / 3.3 V |
| Active Mode Current | 90 uA/MHz |
| Sleep Mode Current | 1.5 uA |
| Wake-up Time | 1.5 us |
| Connectivity | I2C, IrDA, LIN, SPI, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, I2S, LCD, Crypto |
| Température de fonctionnement | -40C to +85C |
| Boîtier | 100-VFBGA (7x7 mm) |
| Type de montage | Surface Mount |
| Packaging | Tray |
| Statut RoHS | ROHS3 Compliant |
| Security Feature | Hardware cryptography (CRYPTO) |
Guide de configuration des broches du ATSAM4LC8CA-CFU 100-vfbga (7x7 mm)
Configuration des broches du ATSAM4LC8CA-CFU (boîtier 100-vfbga (7x7 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour ATSAM4LC8CA-CFU.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
ATSAM4LC8CA-CFU convient pour 6 applications: Battery-Powered Portable Instruments, LCD Human-Machine Interfaces, Secure IoT Endpoints, Industrial Sensor Nodes, Audio and Voice Peripheral Devices, USB-Connected Data Acquisition.
Battery-Powered Portable Instruments
The ATSAM4LC8CA-CFU fits battery-powered portable instruments because its 90 uA/MHz active current and 1.5 uA sleep current minimize average draw, while the 1.5 us wake-up time lets the CPU sleep between measurement cycles without latency penalties. A handheld data logger can sample a sensor via the ADC or I2C, DMA-transfer results to the 512KB flash, and return to sleep within milliseconds, extending battery life by orders of magnitude versus always-on designs. Operation from a 1.8V supply allows direct connection to single-cell chemistry rails through an LDO, and the -40C to +85C industrial range supports field instrumentation. The BGA package's 7x7 mm footprint keeps the end product compact.
Recommandé
LCD Human-Machine Interfaces
The integrated LCD controller makes the ATSAM4LC8CA-CFU a strong fit for segment-LCD human-machine interfaces in meters, thermostats, and industrial panels. Driving the LCD directly from the MCU eliminates a dedicated LCD driver IC, reducing BOM cost and board area inside the 7x7 mm VFBGA. The SAM4L's low-power design sustains display refresh from sleep modes, and the 1.5 uA sleep current allows always-on display operation from battery or energy-harvesting supplies. The 512KB flash accommodates multi-language font tables and application logic, while USART, I2C, and USB links handle communication with host controllers or field updates. Per Microchip SAM4L documentation, the LCD controller supports multiple duty cycles and frame rates.
Recommandé
Secure IoT Endpoints
For secure IoT endpoints, the ATSAM4LC8CA-CFU's hardware cryptography engine offloads AES-class operations from the CPU, enabling encrypted communication and secure boot at 48 MHz with minimal energy overhead - critical for battery nodes. The 512KB flash stores both application firmware and cryptographic keys with room for OTA update staging, and USB, UART, SPI, or I2C connectivity interfaces to radio modules or gateways. The Cortex-M4 core executes TLS-style protocol stacks efficiently, while brown-out detection protects key integrity during supply dips. Industrial temperature rating from -40C to +85C suits outdoor and building-automation deployments. ROHS3-compliant BGA packaging supports standard reflow assembly in high-volume IoT manufacturing.
Recommandé
Industrial Sensor Nodes
Industrial sensor nodes benefit from the ATSAM4LC8CA-CFU's combination of 12 peripheral interfaces (I2C, SPI, multiple UART/USART, LIN, IrDA, USB) and industrial temperature operation to +85C. Sensor data streams through DMA into the 512KB flash or SRAM without CPU intervention, and the Cortex-M4's DSP instructions perform local filtering or FFT pre-processing before transmission, reducing radio duty cycles. The 90 uA/MHz active current suits nodes powered by 24V loops through regulators or by local batteries, and the 1.5 us wake-up supports event-driven sampling of vibration or flow signals. LIN and USART interfaces connect directly to legacy industrial buses, simplifying retrofit installations.
Recommandé
Audio and Voice Peripheral Devices
The I2S peripheral on the ATSAM4LC8CA-CFU supports audio codec interfacing for intercoms, voice-annotation devices, and portable audio accessories. The Cortex-M4 core executes audio codecs and DSP filters with single-cycle MAC instructions at 48 MHz, while DMA moves I2S sample data without CPU loading. The 512KB flash holds codecs, sample tables, and protocol stacks, and USB connectivity supports USB audio class implementations for PC-connected accessories. Ultra-low sleep current keeps always-listening wake-word front ends practical in battery products, and the 1.5 us wake-up latency preserves the first syllable of voice commands. Per the SAM4L datasheet, I2S operates in master or slave modes.
Recommandé
USB-Connected Data Acquisition
For USB-connected data acquisition pods, the ATSAM4LC8CA-CFU's native USB device peripheral streams measurement data to hosts at full speed while the Cortex-M4 core processes ADC samples and protocol formatting concurrently. The 512KB flash buffers acquisition sessions and stores vendor-specific descriptors, and DMA keeps USB transfers deterministic under CPU load. The 1.8V/3.3V supply options and 90 uA/MHz active current allow bus-powered or battery-powered operation, and sleep modes reduce draw when the host suspends the link. The industrial -40C to +85C rating supports bench-to-field portability, and hardware crypto enables licensed-instrument feature unlocking via encrypted USB commands.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ATSAM4LC8CA-CFU — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | ATSAM4LC8CA-CFUR | ATSAM4LS8CA-CFU | ATSAM4LC4CA-CFU | ATSAM4LS4CA-CFU |
|---|---|---|---|---|---|
| Package | 100-VFBGA (7x7 mm) | 100-VFBGA (7x7 mm) - same | 100-VFBGA (7x7 mm) - same | 100-VFBGA (7x7 mm) - same | 100-VFBGA (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | ARM Cortex-M4, 48 MHz | ARM Cortex-M4, 48 MHz | ARM Cortex-M4, 48 MHz | ARM Cortex-M4, 48 MHz | ARM Cortex-M4, 48 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB | 256 KB |
| Packaging | Tray | Tape & Reel | Tray | Tray | Tray |
Principaux différenciateurs
- Hardware cryptography engine for secure applications (vs ATSAM4LS4CA-CFU)
- Double the flash in the identical footprint (vs ATSAM4LC4CA-CFU)
- Class-leading low power with fastest wake-up (vs ATSAM4LS8CA-CFU)
- Tray packaging for engineering and low-volume builds (vs ATSAM4LC8CA-CFUR)
Notes de conception
The 100-VFBGA (7x7 mm) package uses a 0.8 mm ball pitch typical of the SAM4L BGA offerings; verify the exact pitch against the Microchip datasheet ball map before routing. Fan out with via-in-pad or dog-bone escapes on a minimum 4-layer PCB, dedicating inner layers to a solid ground plane beneath the device to keep supply impedance low. Obtain the verified footprint from SnapEDA (exportable to Altium, KiCad, Eagle, OrCAD) rather than hand-drawing the 100-ball map - a single mis-mapped ball on power, ground, or SWD nets will render the board unprogrammable. Plan X-ray or acoustic inspection for production since BGA joints are invisible after reflow.
Design the power tree around the SAM4L's ultra-low-power profile: active mode draws 90 uA/MHz (about 4.3 mA at full 48 MHz), sleep mode only 1.5 uA. Estimated: at a 10% duty cycle at 48 MHz from a 3.3 V rail, average current is roughly 0.43 mA plus sleep floor, so a 1000 mAh cell supports multi-year operation - but add regulator quiescent current, which can dominate at these levels. Select an LDO or buck with sub-uA IQ. Use the brown-out detect/reset peripheral and sequence VDD per the datasheet ramp requirements; the device supports 1.8 V, 2 V, 2.3 V, and 3.3 V nominal rails.
Do not assume automatic firmware portability between LC and LS SAM4L variants - although ATSAM4LS8CA-CFU shares the 100-VFBGA footprint and 512KB flash, peripheral allocation and the crypto/LCD feature set differ, so recompile against the correct device header and re-verify peripheral clock settings. Confirm your compiled image plus OTA staging headroom fits flash: the 256KB LC4/LS4 parts are footprint-identical but will overflow a 512KB-class image. Finally, the datasheet PDF published 2014-02-27 predates later errata; always cross-check errata documents on Microchip's SAM4L page before tape-out.
Informations de conformité
ROHS3 Compliant per IC Components Ltd. Mouser lists the part as GREEN, industrial temperature grade with MRL (material restriction list) compliance. REACH and conflict minerals declarations not stated in provided data.
