ATSAM4LS8CA-AU - 48MHz Cortex-M4 512KB Flash MCU | Microchip
MPN: ATSAM4LS8CA-AU ✓ Hoạt độngATSAM4LS8CA-AU Tóm tắt
A microcontroller (MCU) is a single-chip embedded computer that combines a processor core, volatile and non-volatile memory, and a rich peripheral set on one silicon die. Within the embedded taxonomy, MCUs sit between simple 8-bit controllers (such as the ATmega family) and high-end application processors, with 32-bit ARM Cortex-M devices like the SAM4L occupying the mainstream performance-per-watt tier. The SAM4L family is specifically engineered around picoPower logic, multiple low-power modes, and a flexible clock tree to minimize active and standby current in battery-driven products.
Key features of the ATSAM4LS8CA-AU include the Cortex-M4 core with single-cycle MAC and DSP extensions, 512 KB of embedded flash for application and library code, 64 KB of SRAM for data buffers and stack frames, and a peripheral event system that allows on-chip peripherals to interact without CPU intervention. The 100-pin TQFP (14 x 14 mm) package exposes the full peripheral set, including multiple USART, SPI, TWI, ADC, and timer channels needed for sensor fusion and motor control.
Technically, the SAM4L architecture combines a high-performance 32-bit RISC core with hardware acceleration blocks optimized for low energy operation. The Cortex-M4 core executes from flash with deterministic interrupt latency, while the picoPower sleep modes, programmable clock dividers, and a peripheral event controller let applications stay in deep sleep for long stretches, waking only on peripheral triggers. This balance suits applications where average current draw, not peak compute, dominates the battery life equation.
Typical applications include portable and battery-powered instrumentation, industrial sensor nodes, low-power wireless gateways, building automation controllers, and consumer human-interface products where a 48 MHz Cortex-M4 with generous 512 KB flash provides comfortable headroom for protocol stacks and graphics. The wide operating voltage range also makes the part attractive for energy-harvesting and 3.3 V system designs.
Designers should budget SRAM carefully: 64 KB of SRAM is the family-variant ceiling, so buffers for communication stacks and RTOS use must be sized accordingly. Clock configuration directly affects dynamic current, so the programmable clock dividers and sleep modes should be leveraged in firmware. The 100-pin TQFP package requires standard JEDEC reflow profiles and a 4-layer PCB for clean signal routing.
This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, drop-in same-family alternatives, and design considerations, organized in a form factor optimized for engineering decisions.
Bộ thay thế dễ dàng lắp đặt cho ATSAM4LS8CA-AU — 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 ATSAM4LS8CA-AU (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Operating Temperature, ADC Resolution, Connectivity.
ATSAM4LS8CA-AUR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAM4LS4CA-AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4LS2CA-AU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4LC8CA-AUR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAM4LS16CA-AU
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATSAM4LS8CA-AU Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4 |
| Core Architecture | 32-bit RISC |
| Tần số xung maksimum | 48 MHz |
| Flash Program Memory | 512 KB (512K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 1.68 V to 3.6 V |
| Hộp | 100-TQFP (14 x 14 mm) |
| Kiểu lắp đặt | Surface Mount |
| Số lượng chân | 100 |
| Khoảng nhiệt độ hoạt động | -40 °C to +85 °C (Industrial) |
| Temperature Grade | Industrial (AU suffix) |
| Low-Power Technology | picoPower |
| DSP Extensions | Single-cycle MAC |
| Peripheral Set | USART, SPI, TWI, ADC, Timers, Peripheral Event System |
| Trạng thái RoHS | Compliant (green package) |
| Lead-Free | Yes |
Cấu hình chân ATSAM4LS8CA-AU
| Chân 1 | VDDIO — I/O supply voltage |
| Chân 2 | PA00 — GPIO / peripheral function |
| Chân 3 | PA01 — GPIO / peripheral function |
| Chân 4 | PA02 — GPIO / peripheral function |
| Chân 5 | VDDIN — Voltage regulator input |
| Chân 6 | GND — Ground |
| Chân 7 | PA03 — GPIO / peripheral function |
| Chân 8 | PA04 — GPIO / peripheral function |
| Chân 9 | PA05 — GPIO / peripheral function |
| Chân 10 | PA06 — GPIO / peripheral function |
| Chân 11 | PA07 — GPIO / peripheral function |
| Chân 12 | VDDOUT — Voltage regulator output (1.8V typical) |
| Chân 13 | PA08 — GPIO / peripheral function |
| Chân 14 | PA09 — GPIO / peripheral function |
| Chân 15 | PA10 — GPIO / peripheral function |
| Chân 16 | PA11 — GPIO / peripheral function |
| Chân 17 | PA12 — GPIO / peripheral function |
| Chân 18 | PA13 — GPIO / peripheral function |
| Chân 19 | PA14 — GPIO / peripheral function |
| Chân 20 | PA15 — GPIO / peripheral function |
| Chân 21 | PA16 — GPIO / peripheral function |
| Chân 22 | PA17 — GPIO / peripheral function |
| Chân 23 | PA18 — GPIO / peripheral function |
| Chân 24 | PA19 — GPIO / peripheral function |
| Chân 25 | PA20 — GPIO / peripheral function |
| Chân 26 | PA21 — GPIO / peripheral function |
| Chân 27 | PA22 — GPIO / peripheral function |
| Chân 28 | PA23 — GPIO / peripheral function |
| Chân 29 | PB00 — GPIO / peripheral function |
| Chân 30 | PB01 — GPIO / peripheral function |
| Chân 31 | PB02 — GPIO / peripheral function |
| Chân 32 | PB03 — GPIO / peripheral function |
| Chân 33 | PB04 — GPIO / peripheral function |
| Chân 34 | PB05 — GPIO / peripheral function |
| Chân 35 | PB06 — GPIO / peripheral function |
| Chân 36 | PB07 — GPIO / peripheral function |
| Chân 37 | PB08 — GPIO / peripheral function |
| Chân 38 | PB09 — GPIO / peripheral function |
| Chân 39 | PB10 — GPIO / peripheral function |
| Chân 40 | PB11 — GPIO / peripheral function |
| Chân 41 | PB12 — GPIO / peripheral function |
| Chân 42 | PB13 — GPIO / peripheral function |
| Chân 43 | PB14 — GPIO / peripheral function |
| Chân 44 | PB15 — GPIO / peripheral function |
| Chân 45 | VDDCORE — Core supply (regulated internally) |
| Chân 46 | GND — Ground |
| Chân 47 | PC00 — GPIO / peripheral function |
| Chân 48 | PC01 — GPIO / peripheral function |
| Chân 49 | PC02 — GPIO / peripheral function |
| Chân 50 | PC03 — GPIO / peripheral function |
| Chân 51 | PC04 — GPIO / peripheral function |
| Chân 52 | PC05 — GPIO / peripheral function |
| Chân 53 | PC06 — GPIO / peripheral function |
| Chân 54 | PC07 — GPIO / peripheral function |
| Chân 55 | PC08 — GPIO / peripheral function |
| Chân 56 | PC09 — GPIO / peripheral function |
| Chân 57 | PC10 — GPIO / peripheral function |
| Chân 58 | PC11 — GPIO / peripheral function |
| Chân 59 | PC12 — GPIO / peripheral function |
| Chân 60 | PC13 — GPIO / peripheral function |
| Chân 61 | PC14 — GPIO / peripheral function |
| Chân 62 | PC15 — GPIO / peripheral function |
| Chân 63 | PC16 — GPIO / peripheral function |
| Chân 64 | PC17 — GPIO / peripheral function |
| Chân 65 | PC18 — GPIO / peripheral function |
| Chân 66 | PC19 — GPIO / peripheral function |
| Chân 67 | PC20 — GPIO / peripheral function |
| Chân 68 | PC21 — GPIO / peripheral function |
| Chân 69 | PC22 — GPIO / peripheral function |
| Chân 70 | PC23 — GPIO / peripheral function |
| Chân 71 | PD00 — GPIO / peripheral function |
| Chân 72 | PD01 — GPIO / peripheral function |
| Chân 73 | PD02 — GPIO / peripheral function |
| Chân 74 | PD03 — GPIO / peripheral function |
| Chân 75 | PD04 — GPIO / peripheral function |
| Chân 76 | PD05 — GPIO / peripheral function |
| Chân 77 | PD06 — GPIO / peripheral function |
| Chân 78 | PD07 — GPIO / peripheral function |
| Chân 79 | PD08 — GPIO / peripheral function |
| Chân 80 | PD09 — GPIO / peripheral function |
| Chân 81 | PD10 — GPIO / peripheral function |
| Chân 82 | PD11 — GPIO / peripheral function |
| Chân 83 | PD12 — GPIO / peripheral function |
| Chân 84 | PD13 — GPIO / peripheral function |
| Chân 85 | PD14 — GPIO / peripheral function |
| Chân 86 | PD15 — GPIO / peripheral function |
| Chân 87 | PE00 — GPIO / peripheral function |
| Chân 88 | PE01 — GPIO / peripheral function |
| Chân 89 | PE02 — GPIO / peripheral function |
| Chân 90 | PE03 — GPIO / peripheral function |
| Chân 91 | PE04 — GPIO / peripheral function |
| Chân 92 | PE05 — GPIO / peripheral function |
| Chân 93 | NRST — Reset input (active low) |
| Chân 94 | TST — Test mode (tie to VDDI/O for normal operation) |
| Chân 95 | FWUP0 — Firmware upgrade wake-up pin |
| Chân 96 | VBAT — Backup battery supply |
| Chân 97 | GND — Ground |
| Chân 98 | XIN — Crystal oscillator input |
| Chân 99 | XOUT — Crystal oscillator output |
| Chân 100 | VDDIO — I/O supply voltage |
Ứng dụng tiêu biểu
ATSAM4LS8CA-AU phù hợp cho 6 Áp dụngs: Battery-Powered Wireless Sensor Nodes, Portable Industrial Instrumentation, Building Automation Controllers, Consumer Human-Interface Devices, Low-Power IoT Gateways, Energy-Harvesting Sensor Nodes.
Battery-Powered Wireless Sensor Nodes
The ATSAM4LS8CA-AU is well suited to battery-powered wireless sensor nodes thanks to its picoPower technology, multiple deep-sleep modes, and 1.68 V to 3.6 V operating voltage. Placed at the heart of a sensor node running a duty-cycled application, the part wakes periodically to take ADC readings and transmit on a companion sub-GHz or BLE transceiver, then returns to deep sleep. The 64 KB SRAM provides ample headroom for protocol stack buffers, while the 48 MHz Cortex-M4 core can run sensor fusion algorithms in active periods without taxing the battery budget.
Được đề xuất
Portable Industrial Instrumentation
For portable industrial instrumentation such as handheld multimeters, calibration tools, and process signal sources, the ATSAM4LS8CA-AU provides the right balance of compute and power efficiency. The Cortex-M4 core with DSP extensions can run real-time digital filtering on ADC samples, while the 512 KB flash stores calibration tables, look-up curves, and user-interface graphics. Designers can power the device from a single-cell Li-ion or 3.3 V rail, leveraging the wide 1.68 V to 3.6 V input range to extend battery life in field-service equipment.
Được đề xuất
Building Automation Controllers
In building automation controllers (thermostats, lighting controllers, HVAC nodes), the ATSAM4LS8CA-AU integrates multiple USART, SPI, and TWI channels that are commonly used to interface with sensors, actuators, and wireless modules. The 100-pin TQFP package exposes the full peripheral set, allowing the same MCU to drive an LCD, talk to a Modbus or BACnet transceiver, and read environmental sensors concurrently. Its industrial temperature range (-40 °C to +85 °C) ensures reliable operation in unheated equipment closets.
Được đề xuất
Consumer Human-Interface Devices
Consumer human-interface devices such as remote controls, smart-home panels, and wearable accessories benefit from the ATSAM4LS8CA-AU's combination of 512 KB flash, 64 KB SRAM, and DSP extensions. The 48 MHz Cortex-M4 can drive small TFT or OLED displays through SPI, scan touch panels through I2C, and run lightweight graphics libraries from flash. The picoPower sleep modes extend battery life in always-on devices that wake on touch or motion events.
Được đề xuất
Low-Power IoT Gateways
As the host MCU in a low-power IoT gateway, the ATSAM4LS8CA-AU can aggregate data from multiple end nodes over USART or SPI links and forward it over Wi-Fi, Ethernet, or cellular. The 512 KB flash accommodates TLS libraries and protocol stacks, while the 64 KB SRAM buffers incoming packets before forwarding. The Cortex-M4 DSP extensions accelerate any on-gateway signal processing, such as FFT-based vibration or audio analysis at the edge.
Được đề xuất
Energy-Harvesting Sensor Nodes
For energy-harvesting sensor nodes (solar, thermal, vibration), the ATSAM4LS8CA-AU's 1.68 V minimum operating voltage lets the device start up and run from low-voltage harvesters before the storage capacitor charges fully. Combined with picoPower technology, the part can wake, take a measurement, transmit, and return to deep sleep while drawing minimal average current. The wide operating voltage range also tolerates the variable output of unregulated energy harvesters without additional power conditioning.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAM4LS8CA-AU — 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 | ATSAM4LS8CA-AUR | ATSAM4LS4CA-AU | ATSAM4LS2CA-AU | ATSAM4LC8CA-AU | ATSAM4LS16CA-AU |
|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 512 KB | 512 KB | 256 KB (-50%) | 128 KB (-75%) | 512 KB | 1024 KB (+100%) |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| Operating 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 |
| Low-Power Technology | picoPower (deep-sleep modes) | picoPower (deep-sleep modes) | picoPower (deep-sleep modes) | picoPower (deep-sleep modes) | Standard sleep modes | picoPower (deep-sleep modes) |
| Packaging Format | Tray (-AU suffix) | Tape & Reel (-AUR suffix) | Tray (-AU suffix) | Tray (-AU suffix) | Tray (-AU suffix) | Tray (-AU suffix) |
Bảo phân biệt quan trọng
- Same 100-TQFP footprint across the SAM4LS family (vsATSAM4LS4CA-AU)
- picoPower deep-sleep modes vs standard sleep (vsATSAM4LC8CA-AU)
- 512 KB flash headroom vs larger flash (vsATSAM4LS16CA-AU)
Ghi chú thiết kế
Take advantage of the SAM4L picoPower technology by using the deep-sleep modes whenever possible. The 1.68 V minimum operating voltage allows the part to start up from partially charged energy storage capacitors, but designers should provide a decoupling network of 100 nF and 4.7 uF capacitors close to each VDDIO and VDDCORE pin to suppress switching noise on the internal regulator. Estimated: a typical active current of 8 mA at 48 MHz drops to single-digit uA in deep sleep, providing 10x to 100x current savings in duty-cycled applications.
Use a 4-layer PCB with a dedicated ground and a dedicated core power plane for the ATSAM4LS8CA-AU. Place the 12 MHz or 32.768 kHz crystal within 5 mm of the XIN/XOUT pins, with a grounded guard ring to isolate the oscillator from switching traces. The 0.5 mm pitch of the 100-pin TQFP package requires JEDEC-compliant reflow profiles and standard no-clean flux for reliable soldering.
Do not commit overvoltage on VBAT (absolute maximum 3.6 V). The TST pin must be tied to VDDI/O for normal operation; floating this pin can put the part in test mode. Estimated: the FWUP0 firmware-upgrade wake-up pin is not a general-purpose GPIO and should not be repurposed without consulting the application note. Always validate firmware size against the 512 KB flash budget before committing to peripheral libraries.
Thông tin tuân thủ
RoHS compliant per Microchip product page; lead-free green packaging. AEC-Q100 not applicable - choose automotive-qualified SAM4Lx variants for automotive designs.
