ATSAM4LS8BA-AU - Cortex-M4 48MHz 512KB MCU | Microchip
料号： ATSAM4LS8BA-AU ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.84 | $5.84 |
| 10 | $5.42 | $54.20 |
| 100 | $4.92 | $492.00 |
| 500 | $4.61 | $2,305.00 |
| 1,000 | $4.34 | $4,340.00 |
ATSAM4LS8BA-AU 概述
A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip. Within the semiconductor hierarchy, the ATSAM4LS8BA-AU sits at: ARM Cortex-M4 MCU -> 32-bit microcontroller -> SAM4L family -> embedded processing -> semiconductor device. MCUs are the core building blocks of embedded systems, controlling sensors, actuators, and communication interfaces in everything from consumer gadgets to industrial equipment.
Key differentiating features include the Cortex-M4 core with DSP instructions, an integrated USB 2.0 device controller, a Peripheral Event System that routes signals between peripherals without CPU intervention, and the proprietary SleepWalking technology that lets peripherals operate autonomously while the core sleeps. These attributes make it exceptionally well suited to battery-powered and energy-harvesting designs that still require substantial processing throughput.
The SAM4L architecture also integrates a flash accelerator for zero-wait-state execution at full speed, multiple low-power sleep modes, an AES/DES cryptographic option on sibling parts, and analog peripherals including a 12-bit ADC and DAC. The wide 1.62V to 3.6V operating supply range supports direct operation from single-cell lithium and 3.3V industrial rails.
Typical applications include portable medical instruments, battery-powered metering, IoT sensor nodes, consumer appliance control, and industrial monitoring where long battery life is a design requirement. The 48 MHz Cortex-M4 with hardware divide and single-cycle MAC handles digital filtering and control loops efficiently.
A key design consideration is power budgeting: exploit the SleepWalking peripheral system and fast wake-up to remain in the deepest possible sleep mode between events, since active current dominates the energy profile in duty-cycled systems.
This page synthesizes distributor pricing from multiple sources, drop-in family alternatives, and practical design guidance not found in the manufacturer datasheet alone. Pricing references are as of 2026-09-20.
直接替换替代料： ATSAM4LS8BA-AU ——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： ATSAM4LS8BA-AU （相同外形与封装尺寸） ——差异在于 Package, Core Processor, Packaging, Series, Flash Memory.
快速对比工具——选择替代料号进行并排对比：
ATSAM4LC8BA-UUR
✅ 直接替换✓ 有现货
$3.95 / 个
查看数据手册 →ATSAM4LC8BA-AUR
✅ 直接替换📋 参考替代料（不在目录中）
ATSAM4LS8BA-AUR
✅ 直接替换✓ 有现货
$4.72 / 个
查看数据手册 →ATSAM4LS8CA-AU
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.85 / 个
查看数据手册 →ATSAM4LS4BA-AU
✅ 直接替换✓ 有现货
$6.02 / 个
查看数据手册 →ATSAM4LS8BA-AU 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 |
| Flash Memory Size | 512KB (512K x 8) |
| SRAM Size | 64KB |
| Supply Voltage Range | 1.62 V to 3.6 V |
| 工作电源电压 | 1.8 V / 2.5 V / 3.3 V |
| Active Mode Current | 90 uA/MHz |
| Sleep Mode Current | 1.5 uA |
| Wake-up Time | down to 1.5 us |
| 封装 | 64-TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| Temperature Grade | Industrial |
| Connectivity | USB Device |
| Series | SAM4L |
| Packaging | Tray |
| Terminal Form | Gull Wing |
ATSAM4LS8BA-AU 64-tqfp (10x10 mm) 引脚配置指南
ATSAM4LS8BA-AU（64-tqfp (10x10 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： ATSAM4LS8BA-AU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAM4LS8BA-AU 适用于 6 应用s: Battery-Powered Metering, Portable Medical Instruments, IoT Sensor Nodes, Consumer Appliance Control, Industrial Condition Monitoring, USB Consumer Peripherals.
Battery-Powered Metering
Smart water, gas, and electricity meters must run for 10-15 years on a single battery, making the ATSAM4LS8BA-AU's 90 uA/MHz active current, 1.5 uA sleep current, and 1.5 us wake-up ideal. The SleepWalking system lets the MCU poll the flow sensor and accumulate pulses via the peripheral event system while the Cortex-M4 core stays asleep, multiplying battery life versus designs that wake the CPU for every event. Placed on a 3.0V lithium thionyl chloride rail directly, it eliminates an LDO quiescent penalty. The 512KB flash stores metering firmware, calibration tables, and a bootloader for OTA updates over the meter communication link.
推荐
Portable Medical Instruments
Handheld blood-pressure monitors, glucose meters, and pulse oximeters need both signal processing throughput and long battery run time. The ATSAM4LS8BA-AU's Cortex-M4 core with DSP instructions executes digital filtering on ADC samples at 48 MHz while drawing only 90 uA/MHz, and its 12-bit ADC captures physiological signals directly. SleepWalking allows continuous sensor monitoring with scheduled CPU wake-ups, extending operation across multiple patient shifts on a rechargeable cell. The 64KB SRAM buffers waveform data for on-screen display, and the USB device port provides data offload to clinical systems without a separate interface chip.
推荐
IoT Sensor Nodes
Wireless sensor nodes spend most of their life asleep, waking briefly to sample, process, and transmit. The ATSAM4LS8BA-AU's 1.5 uA sleep current and 1.5 us wake-up minimize the energy cost of these duty cycles, while the Cortex-M4 core runs protocol stacks and sensor-fusion algorithms that 8-bit MCUs cannot handle. The Peripheral Event System routes timer and ADC events without core intervention, and the 512KB flash accommodates a full TCP/UDP or BLE host stack plus application code and OTA bootloader. Running from 1.8V to 3.6V, it pairs directly with single-cell lithium or boost-regulated supplies.
推荐
Consumer Appliance Control
Washing machines, rice cookers, and HVAC controls require motor sequencing, user-interface handling, and sensor acquisition at low unit cost. The ATSAM4LS8BA-AU provides 48 MHz Cortex-M4 performance for PID control loops, ample 512KB flash for multi-language UI assets and update-safe dual-image firmware, and industrial temperature rating for appliance environments. The gull-wing 64-TQFP (10x10 mm) footprint supports two-layer control boards with cost-effective assembly. Its 1.62-3.6V supply range and low standby consumption help products meet standby-power regulations, while fast wake-up keeps touch sensing responsive from deep sleep.
推荐
Industrial Condition Monitoring
Vibration and temperature monitoring nodes on factory machinery sample accelerometers continuously and run FFT analysis locally. The ATSAM4LS8BA-AU's Cortex-M4 DSP instructions (single-cycle MAC, hardware divide) accelerate spectral analysis, while the 64KB SRAM holds sample windows for batch processing. SleepWalking allows the ADC and timers to capture data on schedule with the core asleep between windows, and the industrial temperature grade suits cabinet-mounted electronics. The USB device interface enables field diagnostics from a laptop, and 512KB flash stores logging firmware plus a failsafe image for recovery after power interruptions.
推荐
USB Consumer Peripherals
Devices such as payment terminals, barcode scanners, and audio accessories benefit from the ATSAM4LS8BA-AU's integrated USB 2.0 device controller, which removes the need for a separate USB interface chip. The 48 MHz Cortex-M4 processes endpoint traffic and application logic concurrently, the 512KB flash holds descriptors, class drivers, and application firmware with room for field updates, and the flash accelerator ensures zero-wait-state execution during bus transactions. Low sleep current supports suspend-mode compliance, keeping standby draw within USB specification while allowing remote wake-up in 1.5 us from the bus resume event.
推荐
推荐产品汇总
工程参考数据： ATSAM4LS8BA-AU ——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 | ATSAM4LC8BA-UUR | ATSAM4LC8BA-AUR | ATSAM4LS8BA-AUR | ATSAM4LS4BA-AU |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | 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 |
| Flash Memory | 512KB | 512KB | 512KB | 512KB | 256KB |
| SRAM | 64KB | 64KB | 64KB | 64KB | 64KB |
| Hardware Crypto (AES/DES) | No | Yes | Yes | No | No |
| Packaging | Tray | Tape & Reel | Tape & Reel | Tape & Reel | Tray |
关键差异点
- Lowest-power Cortex-M4 in its class （对比 ATSAM4S8BA-AU (SAM4S series))
- No crypto engine trade-off （对比 ATSAM4LC8BA-UUR)
- Double the flash at same footprint （对比 ATSAM4LS4BA-AU)
设计说明
Design the power tree around the 1.62-3.6V supply window. For battery products, connect the cell directly or through a low-Iq LDO and place 100 nF ceramic decoupling at every VDD/VDDIO pin pair plus bulk 10 uF near the supply entry. Exploit the low-power modes: budget energy against the 90 uA/MHz active figure, meaning a 48 MHz continuous task draws roughly 4.3 mA. Duty-cycle the core aggressively and use SleepWalking so peripherals run while the core sleeps at 1.5 uA.
The 64-TQFP (10x10 mm) land pattern follows the standard TQFP-64 footprint with 0.5 mm pitch. Keep the USB D+/D- traces as a matched-length 90-ohm differential pair routed away from clock lines, and place the 1.5 kOhm pull-up on D+ per the USB full-speed spec as directed in the manufacturer datasheet. Decouple the VDDUSB pin separately from the core rails. Provide solid ground pour under the chip and connect all GND pins directly to it.
Do not assume the SAM4L register map matches the SAM4S series; peripheral names and clock-gating differ, and code ported between them needs review. Verify flash erase/program voltage margins during in-application programming: flash writes require adequate supply headroom per the manufacturer datasheet. When selecting the crypto-equipped ATSAM4LC8BA as a substitute, remember to also update the device header and enable the crypto clocks in your firmware, since the AES/DES controller is present only on the LC variant.
合规信息
Distributor listings describe the part as 'TQFP, GREEN, IND TEMP, MRL A', indicating lead-free green packaging per Microchip conventions; formal RoHS/REACH declarations should be obtained from Microchip product documentation.
