ATSAM4LC2AA-AU - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
N.º da peça: ATSAM4LC2AA-AU ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $5.56 | $5,56 |
| 10 | $5.2 | $52,00 |
| 100 | $4.85 | $485,00 |
| 500 | $4.45 | $2.225,00 |
| 1.000 | $4.05 | $4.050,00 |
ATSAM4LC2AA-AU Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals onto one die, forming the lowest layer of the embedded systems hierarchy (embedded IC -> microcontroller -> ARM Cortex-M MCU -> SAM4L family). The SAM4L series belongs to Microchip's ARM-based flash MCU portfolio, designed for ultra-low-power battery-operated and energy-harvesting systems.
Key features include the 32-bit ARM Cortex-M4 core with 48 MHz maximum frequency, 128KB (128K x 8) flash memory, an integrated segment LCD controller, hardware cryptography accelerators, and USB device/host capability. These features allow the SAM4LC2 to drive displays, secure data, and connect to USB hosts without external components, reducing BOM cost in portable products.
Technically, the device combines the Cortex-M4 processing pipeline with Microchip's low-power peripheral bus architecture and a flexible event system that lets peripherals communicate without CPU intervention. Multiple sleep modes with rapid wake-up, plus dynamic clock gating, make it suitable for duty-cycled applications where average current, not peak performance, dominates battery life. Supply voltage is 3.3 V, typical of industrial and portable logic levels.
Typical applications include battery-powered metering and data loggers, segment-LCD human-machine interfaces, portable medical and wellness devices, and USB-connected sensor nodes. The LCD controller plus low sleep current directly benefits instruments that must show readings continuously on a coin-cell or primary battery.
When designing with this MCU, budget power by exploiting sleep modes and the event system; wake-up from sleep in as little as 1.5 us allows frequent duty cycling without latency penalties. Verify flash and SRAM sizing against code footprint before committing, since the 128KB flash tier is the smallest in parts of this pinout family.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para ATSAM4LC2AA-AU — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAM4LC2AA-AU (mesmo formato e footprint) — diferindo em Wake-up Time, Package, Core Processor, Flash Memory, Series.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAM4LS2AA-AU
✅ Drop-In✓ Em estoque
$5.39 / unidade
Ver ficha técnica →ATSAM4LC4AA-AU
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
Consulte o preço
Ver ficha técnica →ATSAM4LS4AA-AU
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$5.1 / unidade
Ver ficha técnica →ATSAM4LC2BA-AU
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$3.8 / unidade
Ver ficha técnica →ATSAM4LC2AA-AU Classificações máximas e características elétricas
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-Bit |
| Frequência máxima de clock | 48 MHz |
| Flash Memory | 128KB (128K x 8) |
| Tensão de alimentação | 3.3 V |
| Active Mode Current | 90 uA/MHz |
| Sleep Mode Current | 1.5 uA |
| Wake-up Time | 1.5 us (minimum) |
| Encapsulamento | 48-TQFP (7x7 mm) |
| Tipo de montagem | Surface Mount |
| Peripherals | LCD controller, USB device/host, hardware cryptography |
| Series | SAM4L (ATSAM4LC2) |
| Product Status | Active |
Guia de Configuração de Pinos do ATSAM4LC2AA-AU 48-tqfp (7x7 mm)
Configuração de pinos para ATSAM4LC2AA-AU (pacote 48-tqfp (7x7 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para ATSAM4LC2AA-AU.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
ATSAM4LC2AA-AU é adequado para 6 aplicaçãos: Battery-Powered Utility Metering, Portable Medical and Wellness Devices, USB Sensor Nodes and Data Loggers, Industrial HMI with Segment LCD, Smart Home and IoT Battery Devices, Handheld Test and Measurement Instruments.
Battery-Powered Utility Metering
Electricity, water, and gas meters run for years on primary batteries, so average current is the governing design constraint. The ATSAM4LC2AA-AU's 90 uA/MHz active current and 1.5 uA sleep current allow the meter to wake, sample, compute, and return to sleep within milliseconds thanks to the 1.5 us wake-up time. Its integrated segment LCD controller continuously drives tariff and consumption digits with negligible power, while hardware cryptography secures billing data and firmware. The 48 MHz Cortex-M4 core handles communication stacks and metrology math, and the 128KB flash holds protocol firmware for DLMS/COSEM-class implementations.
Recomendado
Portable Medical and Wellness Devices
Glucose meters, pulse oximeters, and health monitors need responsive computation plus long battery life in a small footprint. The ATSAM4LC2AA-AU fits: its 1.5 uA sleep current preserves battery during idle periods between measurements, and the 48 MHz Cortex-M4 with DSP-friendly instructions processes sensor signals quickly, returning to sleep in under a millisecond. The segment LCD controller displays readings and icons without a power-hungry graphic display, and hardware cryptography protects patient data per privacy requirements. The 3.3 V 48-TQFP 7x7 mm package integrates cleanly into handheld enclosures, and USB device mode supports docking and data upload to clinic systems.
Recomendado
USB Sensor Nodes and Data Loggers
Industrial and environmental loggers often dock to a PC or USB host for configuration and data offload. The ATSAM4LC2AA-AU includes a USB device/host controller, so one MCU handles both the field sensing task and the USB enumeration and bulk transfers - no external USB interface chip required. Between docking events the device sleeps at 1.5 uA and wakes in 1.5 us on RTC or interrupt triggers to timestamp and store readings. The 128KB flash accommodates the USB stack, file handling, and logging application, while hardware cryptography supports authenticated data. The 48 MHz clock provides ample margin for concurrent acquisition and transfer.
Recomendado
Industrial HMI with Segment LCD
Thermostats, panel meters, and control panels need always-on displays with minimal power draw. The ATSAM4LC2AA-AU drives segment LCD glass directly from its integrated LCD controller, eliminating a dedicated display driver IC and its cost. The Cortex-M4 core at 48 MHz executes control loops and communication tasks, while 90 uA/MHz active current keeps duty-cycled operation efficient. Hardware cryptography secures parameter access in commercial equipment, and the 128KB flash stores menus, fonts, and protocol handling. Its 1.5 us wake-up means button presses respond instantly even after deep sleep, delivering a responsive user experience on battery-backed panels.
Recomendado
Smart Home and IoT Battery Devices
Wireless sensors, door locks, and remote controls spend over 99% of their life asleep, so sleep current dominates battery lifetime. The ATSAM4LC2AA-AU's 1.5 uA sleep mode and 1.5 us wake-up let the MCU respond to radio interrupts from a connected transceiver with negligible latency. Its hardware cryptography accelerators handle AES encryption for secure mesh or cloud protocols without draining the battery through software crypto loops. The 128KB flash hosts the application plus a lightweight TCP/IP or mesh stack, and the 3.3 V 48-TQFP package suits compact consumer PCBs. USB host mode also enables local configuration via dongles.
Recomendado
Handheld Test and Measurement Instruments
Multimeters, environmental meters, and portable testers combine an LCD readout, signal acquisition, and data export in one battery-powered shell. The ATSAM4LC2AA-AU covers all three roles: the segment LCD controller renders readings and annunciators, the 48 MHz Cortex-M4 performs math such as RMS conversion and calibration compensation, and USB connectivity exports logged data. With 90 uA/MHz active current, even sustained measurements remain battery-friendly, and the 1.5 uA sleep mode preserves charge between uses. Hardware cryptography supports calibration-data protection, and 128KB flash holds application code with headroom for future firmware features and field updates.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAM4LC2AA-AU — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAM4LS2AA-AU | ATSAM4LC4AA-AU | ATSAM4LS4AA-AU | ATSAM4LC2BA-AU |
|---|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - B-pinout |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Frequency | 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 | 128KB | 128KB | 256KB | 256KB | 128KB |
| Active Mode Current | 90 uA/MHz | 90 uA/MHz | 90 uA/MHz | 90 uA/MHz | 90 uA/MHz |
| Sleep Mode Current | 1.5 uA | 1.5 uA | 1.5 uA | 1.5 uA | 1.5 uA |
| Specialized Peripheral | Segment LCD controller | PTC capacitive touch | Segment LCD controller | PTC capacitive touch | PTC capacitive touch |
| USB + Hardware Crypto | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
Principais diferenciais
- Hardware segment LCD controller (vs ATSAM4LS2AA-AU)
- Class-leading low power with fast wake (vs ATSAM4LC4AA-AU)
- Integrated USB device/host and hardware crypto (vs ATSAM4LC2BA-AU)
Notas de projeto
Exploit the SAM4L sleep modes aggressively: at 1.5 uA sleep and 1.5 us wake-up, a duty cycle of 1% active at 48 MHz yields an average current on the order of (0.01 x 48 x 90 uA) ~ 43 uA plus sleep overhead. Estimated from datasheet figures (90 uA/MHz active, 1.5 uA sleep); verify against your actual clock configuration and peripheral loads. Use the event system so peripherals such as the ADC and RTC trigger without waking the CPU for every sample.
The 48-TQFP (7x7 mm) requires a clean power distribution network: place 100 nF ceramic decoupling capacitors at each VDD pin pair as close to the package as possible, plus one bulk 4.7-10 uF capacitor per supply domain. Use a solid ground plane under the device. Keep the USB differential pair length-matched and routed over an unbroken ground reference; do not route it under the crystal area.
Do not assume footprint compatibility across SAM4L 48-pin variants: the A-pinout parts (ATSAM4LC2AA, ATSAM4LS2AA) and the B-pinout parts (ATSAM4LC2BA) share the TQFP-48 body but differ in pin multiplexing and peripheral mapping (LCD vs PTC). Confirm the exact pin assignment against the Microchip SAM4L datasheet before reusing a layout, and verify SRAM sizing for your application since flash capacity alone does not guarantee fit.
Informações de conformidade
Compliance statuses were not stated in the provided web data; consult the Microchip product page environmental data for RoHS/REACH certificates.
