ATSAM4LC8BA-MU - Cortex-M4 48MHz 512KB MCU | Microchip
料号： ATSAM4LC8BA-MU ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.06 | $50.60 |
| 100 | $4.51 | $451.00 |
| 500 | $4.06 | $2,030.00 |
| 1,000 | $3.65 | $3,650.00 |
ATSAM4LC8BA-MU 概述
A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest software-controllable layer of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip -> computing system. MCUs execute dedicated control, sensing, and connectivity tasks inside a larger electronic product.
Key differentiating features of the ATSAM4LC8BA include its ultra-low-power architecture with multiple sleep modes, an integrated hardware cryptographic engine (AES, DES, SHA), and a low supply voltage window around 1.8V to 3.3V. The Cortex-M4 core provides DSP instructions and single-cycle MAC for efficient signal processing. A flexible event system and low-power peripherals allow peripheral operation while the CPU sleeps, further reducing average current consumption.
Architecturally, the SAM4L series combines the Cortex-M4 processor with a multi-layer bus matrix, flash with read-while-write support, and a rich peripheral set including USB, USART, SPI, I2C (TWI), ADC, DAC, and capacitive touch support via the PTC peripheral touch controller. The picoPower technology and眠 sleepwalking peripherals enable data acquisition during sleep states.
Typical applications include battery-powered industrial sensors, portable medical monitoring devices, smart metering, and low-power consumer electronics, where the 1.5 uA sleep current and 1.5 us wake-up time directly extend battery life and responsiveness.
For design, budget the supply at 3.3V nominal (1.62V to 3.6V operating range) and decouple each VDD pair with 100 nF ceramic capacitors placed close to the 64-QFN leads; the exposed pad must be soldered to a grounded thermal pad for reliable operation.
This page synthesizes distributor pricing, drop-in family alternatives, and practical low-power design notes not consolidated in the manufacturer datasheet.
直接替换替代料： ATSAM4LC8BA-MU ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAM4LC8BA-MU （相同外形与封装尺寸） ——差异在于 Package, Flash Memory, RoHS Status, Core Processor, Supply Voltage.
快速对比工具——选择替代料号进行并排对比：
ATSAM4LC4BA-MU
✅ 直接替换✓ 有现货
$1 / 个
查看数据手册 →ATSAM4LC2BA-MU
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4LS8BA-MU
✅ 直接替换✓ 有现货
$1.02 / 个
查看数据手册 →ATSAM4LS4BA-MU
✅ 直接替换✓ 有现货
$1.85 / 个
查看数据手册 →ATSAM4LS2BA-MU
✅ 直接替换✓ 有现货
$3.79 / 个
查看数据手册 →ATSAM4LC8BA-MU 最大额定值与电气特性
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-Bit |
| 最大时钟频率 | 48 MHz |
| Program Memory Size | 512KB (512K x 8) FLASH |
| SRAM Size | 64KB |
| Supply Voltage Range | 1.8 V / 2 V / 2.3 V / 3.3 V operating points |
| Active Mode Current | 90 uA/MHz |
| Sleep Mode Current | 1.5 uA |
| Wake-up Time | 1.5 us |
| 封装 | 64-QFN (9x9 mm) |
| 安装类型 | Surface Mount |
| Temperature Grade | Industrial |
| 工作温度 | -40C to +85C |
| Security Features | Hardware crypto engine (CRYPTO) |
| Product Series | SAM4L (Atmel/Microchip ATSAM) |
| Packaging | Tray |
| RoHS 状态 | GREEN package (per Mouser listing) |
ATSAM4LC8BA-MU 64-qfn (9x9 mm) 引脚配置指南
ATSAM4LC8BA-MU（64-qfn (9x9 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATSAM4LC8BA-MU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4LC8BA-MU 适用于 6 应用s: Battery-Powered Industrial Sensors, Portable Medical Monitoring Devices, Smart Metering, IoT Secure Sensor Nodes, USB-Connected Industrial HMI and Data Loggers, Consumer Electronics and Wearables.
Battery-Powered Industrial Sensors
Battery-powered industrial condition-monitoring and environmental sensors benefit directly from the ATSAM4LC8BA-MU's 90 uA/MHz active current and 1.5 uA sleep current. The 1.5 us wake-up time lets the MCU sleep between sample intervals and respond instantly to threshold events or bus interrupts. The 512KB flash accommodates protocol stacks, data buffers, and field-updatable firmware, while the industrial -40C to +85C rating covers unconditioned plant environments. Placing the MCU in a low-power sleep state between ADC conversions, with the sleepwalking peripheral architecture handling acquisition, can reduce average current to microamp levels - Estimated: at 1% duty cycle from a 3.6V 2400 mAh cell, service life exceeds several years. The hardware crypto engine secures sensor data against tampering in critical infrastructure deployments.
推荐
Portable Medical Monitoring Devices
Wearable and portable medical monitors - pulse oximeters, ECG patches, glucose loggers - require long battery life and deterministic wake-up, both strengths of the ATSAM4LC8BA-MU. The Cortex-M4 DSP instructions and single-cycle MAC accelerate real-time biopotential filtering, while 64KB SRAM buffers multi-channel samples between radio transmissions. The 1.5 uA sleep current dominates battery drain budgets since monitoring devices idle over 99% of the time. The 64-QFN 9x9 mm footprint keeps the PCB compact for enclosure-constrained wearables. Medical designs also value the industrial temperature range and Microchip's long product lifecycle commitment. Combined with a low-power analog front end and BLE module, Estimated: average system current of tens of microamps is achievable, enabling weeks of continuous operation from a coin cell.
推荐
Smart Metering
Electricity, water, and gas smart meters demand decade-long battery or energy-harvesting lifetimes, making the ATSAM4LC8BA-MU's 1.5 uA sleep current and 90 uA/MHz active efficiency decisive. The 512KB flash supports secure firmware upgrade over the air, and the integrated crypto engine implements authenticated metering data and anti-tampering measures without an external security chip. Multiple USART/SPI/TWI interfaces connect to metrology front ends, optical ports, and RF modules, while the USB device controller supports local service interfaces. Estimated: in a duty-cycled metering profile sampling once per second, average current can stay under 50 uA, keeping a primary lithium cell viable for 10+ years. Industrial temperature rating ensures accuracy across unheated meter cabinets.
推荐
IoT Secure Sensor Nodes
Secure IoT nodes for building automation, asset tracking, and smart-city infrastructure use the ATSAM4LC8BA-MU as a low-power host controller. The hardware crypto engine accelerates AES for encrypted mesh or star network traffic, while 512KB flash holds both the connectivity stack (BLE, Zigbee module drivers, LoRa host code) and application logic with headroom for OTA updates. The 1.5 us wake-up time supports responsive sensor sampling from deep sleep, and 90 uA/MHz active current maximizes battery life between harvest or recharge cycles. Pairing the MCU with a low-power radio module yields a node where Estimated: the MCU contributes only a small fraction of the energy budget. Industrial temperature rating and 3.3V operation simplify integration with standard sensor and radio supplies.
推荐
USB-Connected Industrial HMI and Data Loggers
Human-machine interface panels and standalone data loggers exploit the ATSAM4LC8BA-MU's USB device controller and generous 512KB flash for touch-screen firmware, data buffering, and local command processing. The Cortex-M4's DSP extensions accelerate FFT-based vibration analysis in predictive-maintenance loggers, while 64KB SRAM buffers high-rate acquisitions before USB transfer. The picoPower sleep modes cut idle draw in wall-powered units and enable battery-backed operation during power loss. The 9x9 mm 64-QFN package integrates into dense HMI boards behind a display module. Estimated: sleep currents in the microamp range allow a small backup cell to preserve logged data and real-time clock for months. Multiple TWI/USART ports interface touch controllers, memory cards, and field buses.
推荐
Consumer Electronics and Wearables
Consumer wearables, remote controls, fitness accessories, and smart-home peripherals choose the ATSAM4LC8BA-MU for its balance of processing headroom and battery discipline. The 48 MHz Cortex-M4 runs sensor-fusion and signal-processing workloads that 8-bit MCUs cannot, while 1.5 uA sleep keeps standby drain negligible - critical for always-on accessories. Capacitive touch support through the PTC peripheral touch controller enables touch buttons and sliders without external controllers. The 64-QFN 9x9 mm leadless package supports compact, thin consumer PCBs, and the GREEN RoHS-style packaging meets global environmental requirements. Estimated: pairing with a BLE SoC and coin cell yields months to years of use. 512KB flash leaves room for feature-rich firmware and future enhancements.
推荐
推荐产品汇总
工程参考数据： ATSAM4LC8BA-MU ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAM4LC4BA-MU | ATSAM4LC2BA-MU | ATSAM4LS8BA-MU | ATSAM4LS4BA-MU | ATSAM4LS2BA-MU |
|---|---|---|---|---|---|---|
| Package | 64-QFN (9x9 mm) | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same | 64-QFN (9x9 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Clock | 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 | ARM Cortex-M4 / 48 MHz |
| Flash Memory | 512KB | 256KB | 128KB | 512KB | 256KB | 128KB |
| Hardware Crypto Engine | Yes | Yes | Yes | No (LS sub-family) | No (LS sub-family) | No (LS sub-family) |
| Temperature Range | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
关键差异点
- Largest flash in the same footprint （对比 ATSAM4LC4BA-MU)
- Integrated hardware crypto engine （对比 ATSAM4LS8BA-MU)
- Class-leading low-power profile （对比 Cross-brand Cortex-M4 MCUs)
设计说明
The 64-QFN 9x9 mm package uses a large exposed ground pad that must be soldered to a grounded PCB thermal pad - it is the primary ground and thermal path. Use a window-pane solder paste pattern divided into 4-6 apertures to avoid voiding, and connect the pad to internal ground planes with an array of 9-16 vias (0.3 mm drill). Keep crystal and decoupling capacitors within 2 mm of their pins. QFN leadless joints cannot be visually inspected from the side; plan AOI or X-ray inspection in production test strategy.
Decouple every VDD/VDDIO pair with 100 nF X7R ceramic capacitors placed as close as possible to the pins, plus at least one 4.7-10 uF bulk capacitor near the supply entry. The device supports nominal 1.8V, 2V, 2.3V and 3.3V operating points; at 3.3V ensure brown-out detection is enabled so flash operations do not corrupt during supply dips. To realize the 1.5 uA sleep figure, configure unused GPIOs as grounded inputs or outputs-low, disable the debug interface, and verify no peripheral keeps the 48 MHz oscillator running in sleep.
SAM4L pins are heavily multiplexed: verify each pad's function in the datasheet peripheral multiplexing table before routing, because ADC, USART, and TWI functions frequently share pads and moving a signal after layout requires PCB respin. Flash programming voltage and write timing differ between SAM4L variants - use the correct SAM4L header files in Atmel Studio/Microchip Studio rather than generic SAM4 headers. When substituting ATSAM4LC4BA-MU or ATSAM4LC2BA-MU for this part, link against the matching flash-size linker script or the firmware will attempt writes beyond 256KB/128KB and fault.
合规信息
Mouser lists the part as 'QFN,GREEN,IND TEMP,CRYPTO,MRL A' - GREEN indicates RoHS-compatible green packaging. Detailed REACH/lead-free declarations available via Microchip's product environmental pages.
