ATSAM4LS2CA-CFU - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
MPN: ATSAM4LS2CA-CFU ✓ Hoạt độngATSAM4LS2CA-CFU Tóm tắt
A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the lowest tier of the embedded computing hierarchy (MCU -> embedded processor -> system-on-chip -> semiconductor). The SAM4L family belongs to Microchip (formerly Atmel) ARM-based flash MCU lineup, positioned for low-power embedded control applications.
Key features include ultra-low active-mode consumption of 90 uA/MHz, sleep mode current as low as 1.5 uA, and wake-up time down to 1.5 us - among the fastest in any Cortex-M4 device. The integrated USB device controller, Peripheral Event System, and SleepWalking peripherals allow data transfer and peripheral operation while the CPU sleeps, dramatically reducing average system power.
Technically, the device implements the ARM Cortex-M4 RISC architecture with a 3-stage pipeline, nested vectored interrupt controller, and supply voltage from 1.68 V to 3.6 V. The flash controller supports zero-wait-state execution at reduced frequencies, and the Peripheral Event System routes signals between peripherals without CPU intervention, while SleepWalking lets peripherals wake selectively on qualifying events.
Typical applications include battery-powered sensor nodes, portable medical instruments, low-power industrial sensing, and USB-connected human interface devices - anywhere battery life and fast wake-up dominate the design envelope.
When designing, exploit SleepWalking and the event system early: architectures that poll in active mode forfeit the SAM4L power advantage, so budget firmware effort for event-driven firmware design.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical low-power design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ATSAM4LS2CA-CFU — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAM4LS2CA-CFU (cùng hình factor và footprint) — khác nhau ở Series, Core Processor, Package, Flash Memory, Supplier Device Package.
ATSAM4LS2BA-CFU
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATSAM4LC2CA-CFU
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAM4LS4CA-CFU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAM4LC4CA-CFU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAM4LS8CA-CFU
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAM4LS2CA-CFU Tỷ lệ tối đa & tính chất điện
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-bit |
| Max Clock Speed | 48 MHz |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 32 KB (32K x 8) |
| Supply Voltage Range | 1.68 V to 3.6 V |
| Active Mode Current | 90 uA/MHz |
| Sleep Mode Current | 1.5 uA |
| Wake-up Time | 1.5 us (min) |
| Hộp | 100-VFBGA (7x7 mm) |
| Number of Terminals | 100 |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Series | SAM4L |
| USB | USB Device |
| Peripheral Features | Peripheral Event System, SleepWalking |
| Trạng thái RoHS | Compliant (Green), MRL A |
Hướng dẫn cấu hình chân ATSAM4LS2CA-CFU 100-vfbga (7x7 mm)
Cấu hình chân cho ATSAM4LS2CA-CFU (100-vfbga (7x7 mm) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho ATSAM4LS2CA-CFU.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ATSAM4LS2CA-CFU phù hợp cho 6 Áp dụngs: Battery-Powered Sensor Nodes, Portable Medical Instruments, USB Human Interface Devices, Low-Power Industrial Sensing, Wearable and IoT Edge Devices, Test and Measurement Probes.
Battery-Powered Sensor Nodes
The ATSAM4LS2CA-CFU fits wireless and wired battery sensor nodes because its 90 uA/MHz active current and 1.5 uA sleep current minimize average draw between sampling events. The 1.5 us wake-up time lets the node sleep between sensor reads and respond to radio or timer events almost instantly, unlike MCUs requiring millisecond-level wake-ups. Using SleepWalking, the ADC or TWI peripheral can acquire a sensor reading while the Cortex-M4 core remains in sleep, waking the CPU only when a threshold is crossed. This event-driven pattern can cut average consumption by an order of magnitude versus polled firmware, directly translating coin-cell or AA battery budgets into years of field life.
Được đề xuất
Portable Medical Instruments
Portable diagnostic instruments benefit from the ATSAM4LS2CA-CFU's balance of 32-bit signal processing and ultra-low power. The Cortex-M4's DSP-oriented instruction set accelerates filtering of biopotential or pressure-waveform samples, while the 100-VFBGA 7x7 mm footprint supports compact handheld enclosures. Wake-up in 1.5 us allows instant response to a user pressing the measurement button even after deep sleep, an important user-experience criterion in medical devices. SleepWalking peripherals can maintain continuous sensor polling at 1.5 uA background current during monitoring intervals. Designs should budget the 1.68 V to 3.6 V supply window against single-cell Li battery discharge curves and use the event system to avoid CPU polling during long acquisition sessions.
Được đề xuất
USB Human Interface Devices
With an integrated USB device controller, the ATSAM4LS2CA-CFU implements HID keyboards, mice, and custom-class accessories without an external USB chip. The 48 MHz Cortex-M4 core handles USB protocol servicing plus application logic such as matrix scanning or encoder decoding with headroom to spare. Fast 1.5 us wake-up lets the device resume from sleep on a keypress or USB resume signal within USB timing requirements, preserving low idle power. The 100-VFBGA package suits compact dongles and low-profile peripherals where PCB area is constrained. Firmware can use DMA to move endpoint buffers without CPU intervention, and the Peripheral Event System routes USB wake events efficiently, reducing the interrupt latency budget typically consumed by polled USB stacks.
Được đề xuất
Low-Power Industrial Sensing
Factory and building sensors deployed for years without maintenance require the SAM4L power profile: 1.5 uA sleep with periodic 48 MHz bursts keeps average consumption within energy-harvesting or long-life-battery limits. The industrial -40C to +85C rating of the CA temperature grade covers unconditioned enclosures, and the 1.68 V to 3.6 V supply window tolerates wide battery sag. The Peripheral Event System links a comparator or ADC threshold directly to wake-up logic, so the MCU only wakes when a monitored process variable actually changes - ideal for vibration, temperature, or flow monitoring points. The 100-VFBGA footprint also allows dense multi-sensor boards, though reflow profiling must follow BGA guidelines for reliable industrial assembly.
Được đề xuất
Wearable and IoT Edge Devices
Wearables demand small packages and aggressive power budgets, both addressed by the 7x7 mm VFBGA and the SAM4L's 90 uA/MHz efficiency. The 32 KB SRAM buffers sensor fusion data, while the Cortex-M4 core executes lightweight algorithms between radio transmissions. SleepWalking lets an accelerometer interrupt or RTC alarm trigger activity without spinning the CPU in a polling loop, and the 1.5 us wake-up keeps latency imperceptible to the user. Because the device integrates USB, it can double as the charging-and-configuration interface, removing a second controller from the bill of materials. Designers should reserve SRAM headroom for BLE or sensor stacks and consider the LC-family drop-ins if sleep-mode specs tighten in later revisions.
Được đề xuất
Test and Measurement Probes
Battery-powered data loggers and handheld probes use the ATSAM4LS2CA-CFU to balance sample throughput against battery life. The Cortex-M4 with 48 MHz execution supports sample rates adequate for environmental and process logging, and the 128 KB flash holds logging firmware plus configuration tables without external memory in simple designs. Sleep mode at 1.5 uA dominates the duty cycle in interval-logging applications, and wake-up of 1.5 us ensures no missed samples at log boundaries. The USB device port provides field data download and battery charging over one connector. The Peripheral Event System can chain timer-to-ADC triggers autonomously, achieving jitter-free sampling intervals even while the CPU sleeps between conversions.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAM4LS2CA-CFU — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAM4LS2BA-CFU | ATSAM4LC2CA-CFU | ATSAM4LS4CA-CFU | ATSAM4LC4CA-CFU | ATSAM4LS8CA-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 | 100-VFBGA (7x7 mm) - same |
| Brand | Microchip Technology (Atmel) | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 256 KB | 512 KB |
| Core / Speed | Cortex-M4, 48 MHz | Cortex-M4, 48 MHz | Cortex-M4, 48 MHz | Cortex-M4, 48 MHz | Cortex-M4, 48 MHz | Cortex-M4, 48 MHz |
| Operating Temperature | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Supply Voltage | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V | 1.68 V to 3.6 V |
| USB | USB Device | USB Device | USB Device | USB Device | USB Device | USB Device |
Bảo phân biệt quan trọng
- Fastest wake-up in Cortex-M4 class (vsATSAM4LC4CA-CFU)
- Cost-optimized 128 KB memory point (vsATSAM4LS4CA-CFU)
- Integrated USB device controller (vsATSAM4LS2BA-CFU)
Ghi chú thiết kế
Exploit SleepWalking from day one. The 1.5 uA sleep figure is only achievable when the CPU stops and peripherals operate autonomously via the Peripheral Event System - a polled main loop can multiply average current by 100x or more. Map every periodic task (ADC sampling, TWI sensor reads, RTC housekeeping) to a peripheral event chain before writing application code. Estimated: at 1% duty cycle of 90 uA/MHz operation, average current stays under 2 uA, enabling multi-year coin-cell life.
The 100-VFBGA 7x7 mm package uses a fine ball pitch requiring controlled-impedance multilayer PCBs; follow Microchip's BGA land-pattern and reflow guidelines for void-free assembly. Place 100 nF decoupling capacitors on every supply ball pair plus one bulk capacitor per rail, connected with short wide traces. The BGA escape routing needs via-in-pad or dog-bone fanout - verify your fabricator's minimum via pitch before layout, as this package constrains routing density more than QFP equivalents.
Do not exceed the 3.6 V absolute supply limit when powering from USB VBUS (5 V) - always use an LDO regulator. Also confirm the -CFU (CA grade) temperature ceiling of +85C against your enclosure's worst-case internal temperature; for hot environments select the -BA (-40C to +105C) variant, which is footprint-identical. Finally, since SAM4L parts originated at Atmel, verify firmware tool compatibility with the current Microchip Studio/ MPLAB toolchain revision.
Thông tin tuân thủ
Mouser lists the part as 'BGA Green, IND TEMP, MRL A' indicating RoHS-compliant Green package with low material risk level. Formal REACH and conflict-minerals declarations should be obtained from Microchip's compliance portal.
