ATSAM4LC8CA-CFU - 48MHz Cortex-M4 MCU 512KB Flash | Microchip
部品番号: ATSAM4LC8CA-CFU ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 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 概要
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.
ドロップイン代替品: ATSAM4LC8CA-CFU — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATSAM4LC8CA-CFU （同一形状・フットプリント） — 相違点: Flash Memory, Core Processor, Core Size, Mounting Type, Packaging.
クイック比較ツール — 並列比較する代替部品を選択:
ATSAM4LC8CA-CFUR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATSAM4LS8CA-CFU
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.41 / 個
データシートを見る →ATSAM4LC4CA-CFU
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ATSAM4LS4CA-CFU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATSAM4LC8CA-CFU 最大定格＆電気的特性
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-Bit |
| Maximum Clock Speed | 48 MHz |
| Flash Memory | 512 KB (512K x 8) |
| 電源電圧 | 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 |
| 動作温度 | -40C to +85C |
| パッケージ | 100-VFBGA (7x7 mm) |
| 実装タイプ | Surface Mount |
| Packaging | Tray |
| RoHS ステータス | ROHS3 Compliant |
| Security Feature | Hardware cryptography (CRYPTO) |
ATSAM4LC8CA-CFU 100-vfbga (7x7 mm) ピン配置ガイド
ATSAM4LC8CA-CFU (100-vfbga (7x7 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: ATSAM4LC8CA-CFU.
詳細は データシート をご参照ください。
主な用途
ATSAM4LC8CA-CFU の用途: 6 件s: 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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATSAM4LC8CA-CFU — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | 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 |
主な差別化要因
- 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)
設計ノート
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.
コンプライアンス情報
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.
