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ATSAM4E8CA-AN - 120MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4E8CA-AN

ATSAM4E8CA-AN - 120MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4E8CA-AN is a 32-bit ARM Cortex-M4 flash microcontroller delivering 120 MHz core frequency, 512 KB (512K x 8) embedded Flash, and 128 KB SRAM in a 100-pin LQFP (14x14 mm) surface-mount package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest layer of the embedded systems hierarchy: MCU -> embedded processor -> ARM Cortex-M family -> system-on-chip. The SAM4E series belongs to Microchip (formerly Atmel) SMART ARM-based MCU portfolio, which targets connectivity, control, and sensing applications. Key features include an ARM Cortex-M4 core with hardware floating point unit (FPU), a high data bandwidth bus architecture, and a rich peripheral set including Ethernet MAC, USB, CAN, and high-speed ADC channels. The 120 MHz operating frequency with single-cycle FPU makes this part suited for motor control and communications tasks that require deterministic math performance. Technically, the ATSAM4E8CA-AN operates from a 1.2V core / 3.3V I/O supply domain per distributor specification data, uses gull-wing terminals in a square LQFP body, and is rated for industrial temperature applications. The 512 KB Flash array supports in-system programming, and the peripheral DMA controller offloads data movement from the CPU, improving real-time behavior in communication-heavy designs. Typical applications include industrial automation controllers, Ethernet-connected sensor nodes, motor control drives, and building management systems where a Cortex-M4 with integrated Ethernet removes the need for an external MAC. A key design consideration: verify Flash sizing against firmware roadmap. If code growth is expected, the pin-compatible 1 MB ATSAM4E16CA variants in the same 100-pin LQFP footprint provide a low-risk upgrade path without PCB rework. This page synthesizes distributor pricing, drop-in alternatives, design notes, and cross-reference guidance not found on the manufacturer datasheet alone.

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ATSAM4E8CA-AU - 120MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4E8CA-AU

ATSAM4E8CA-AU - 120MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4E8CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz, integrating 512 KB of flash memory and a 100-pin LQFP (14x14 mm) package. As a member of the SAM4E series, it combines DSP and floating-point instruction capability with a high-bandwidth bus architecture for embedded control and connectivity applications. A microcontroller (MCU) is a single-chip computer that merges a processor core, nonvolatile flash memory, SRAM, and a rich set of peripherals onto one die. Within the power management hierarchy of embedded systems, the MCU sits at the top of the control chain, coordinating sensors, actuators, and communication interfaces. The SAM4E family belongs to Microchip (formerly Atmel) SMART ARM-based MCU portfolio, positioned between general-purpose SAM4S parts and Ethernet-focused industrial controllers. Key differentiating features include the Cortex-M4 core with hardware FPU and Thumb-2 DSP instructions operating at 120 MHz, 512 KB of embedded flash with dual-bank boot capability, and an integrated 10/100 Ethernet MAC. The high data-bandwidth multi-layer bus matrix allows flash execution and peripheral DMA traffic to proceed without contention, sustaining deterministic real-time response. Architecturally, the device employs the ARMv7E-M profile with a 3-stage pipeline, nested vectored interrupt controller, and multiple DMA-enabled peripherals. Per Microchip's product page for the ATSAM4E8C, Microchip recommends Revision B silicon for new prototype and production designs, reflecting an active lifecycle and process maturity. Typical applications include industrial networking nodes leveraging the Ethernet MAC, motor control and digital power conversion exploiting the FPU and ADC peripherals, and building automation or IoT gateways requiring 32-bit headroom. Supply voltage per distributor data spans 1.2 V core domains with 1.62 V to 3.6 V I/O operation in the -AU industrial temperature grade. Design consideration: budget PCB decoupling on all VDDIO/VDDCORE pins and verify Ethernet PHY pairing early, since the on-chip MAC requires an external PHY such as the KSZ8081RNB over RMII. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4E8CA-CU - 120MHz ARM Cortex-M4 MCU 512KB | Microchip
ATSAM4E8CA-CU

ATSAM4E8CA-CU - 120MHz ARM Cortex-M4 MCU 512KB | Microchip

The Microchip Technology ATSAM4E8CA-CU is a 32-bit ARM Cortex-M4 microcontroller from the SAM4E series running at 120 MHz with 512 KB (512K x 8) of embedded Flash memory, housed in a 100-ball TFBGA package measuring 9x9 mm. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals on one die, forming the lowest complete level of an embedded system hierarchy: MCU -> embedded processor -> system-on-chip -> semiconductor device. MCUs are the workhorses of embedded electronics, executing control, sensing, and connectivity tasks in everything from appliances to industrial automation. The ARM Cortex-M4 architecture used here is a 32-bit RISC core widely adopted across the microcontroller industry. Key features of the ATSAM4E8CA-CU include the 120 MHz Cortex-M4 core with a floating point unit (FPU) for efficient DSP and math operations, 512 KB of on-chip Flash for code storage, and the high data bandwidth bus architecture that Microchip highlights for the SAM4E family. Per the Microchip product page, the SAM4E8C features an FPU and a high data bandwidth architecture targeted at connectivity and control applications. Technically, the device belongs to Microchip (formerly Atmel) SMART ARM-based Flash MCU portfolio. The Cortex-M4 core integrates hardware divide, single-cycle MAC, and optional single-precision FPU, enabling closed-loop control algorithms and signal processing without an external coprocessor. The Flash-based program memory allows in-system reprogramming for field upgrades. Typical applications include industrial control and automation nodes, connectivity gateways and bridges, and consumer or building-control systems where a 120 MHz MCU with floating point capability reduces time-to-market. The 9x9 mm TFBGA footprint suits space-constrained, two-sided PCB layouts. Design consideration: BGA packages require controlled-impedance PCB fabrication, X-ray inspection capability for rework, and via-in-pad or dog-bone fanout routing on the 0.8 mm ball pitch typical of this package class. This page synthesizes distributor pricing, verified drop-in alternatives within the SAM4E/SAM4S families, and practical design notes not found in the manufacturer datasheet.

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ATSAM4E8CA-CUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4E8CA-CUR

ATSAM4E8CA-CUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4E8CA-CUR is a 32-bit ARM Cortex-M4 flash microcontroller from the SAM4E family, running at up to 120 MHz with 512 KB (512K x 8) of embedded Flash memory, housed in a 100-ball TFBGA (9 x 9 mm) package supplied on tape and reel. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals on one die, sitting at the top of the embedded-processing hierarchy: MCU -> embedded processor -> system-on-chip -> semiconductor device. The SAM4E series belongs to Microchip's SMART ARM-based Flash MCU portfolio, which consolidates the former Atmel SAM product line under the Microchip brand. Key features of the ATSAM4E8CA-CUR include the ARM Cortex-M4 core with a hardware floating point unit (FPU), enabling single-cycle MAC and DSP instructions, and a high data bandwidth bus architecture per the manufacturer's product page. The 512 KB Flash array supports in-system programming, and the 100-TFBGA footprint packs extensive I/O into a 9 x 9 mm ball grid array suitable for two-layer ball-out routing. Technically, the SAM4E8C integrates the Cortex-M4 with the SAM4E peripheral set, which the manufacturer targets at connectivity-oriented embedded designs; the -CU ordering code denotes the TFBGA-100 package with industrial temperature ordering, delivered in tape-and-reel packing for automated pick-and-place assembly. Supply voltage references for this family are listed as 1.2V (core) / 3.3V (I/O) in distributor specification data. Typical applications include industrial networking nodes, embedded control systems, data-acquisition and logging equipment, and connected devices where the combination of 120 MHz DSP-capable processing, 512 KB Flash, and compact BGA packaging fits space-constrained PCBs. A key design consideration is that TFBGA packages require controlled-impedance, fine-pitch PCB fabrication; verify your board house supports the 0.8 mm ball pitch footprint and plan power distribution and decoupling per the manufacturer datasheet before layout. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4E8CB-CN - Cortex-M4 MCU 120MHz 512KB Flash | Microchip
ATSAM4E8CB-CN

ATSAM4E8CB-CN - Cortex-M4 MCU 120MHz 512KB Flash | Microchip

The Microchip Technology ATSAM4E8CB-CN is a 32-bit ARM Cortex-M4 microcontroller with floating point unit (FPU), running at up to 120 MHz, integrating 512KB of Flash memory and up to 128KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package. A microcontroller unit (MCU) is a single-chip computer that combines a processor core, memory, and peripherals on one die. Within the semiconductor hierarchy, the SAM4E8C belongs to the ARM Cortex-M4-based flash MCU family, positioned above simple 8-bit MCUs (such as PIC16 devices) and within the broader class of embedded processors and power-management-oriented system-on-chip devices. The ARM Cortex-M4 core provides a 3-stage pipeline, single-cycle DSP instructions, and a hardware FPU. Key features include the 120 MHz maximum operating frequency with 2KB branch cache for zero-wait-state flash execution bandwidth, a high data bandwidth bus architecture, single-precision floating point acceleration, and extended temperature operation indicated by the -CN temperature suffix and the TFBGA GREEN extended-temp ordering code reported by distributors. The SAM4E family also integrates a rich peripheral set for connectivity, analog measurement, and advanced timing control. Architecturally, the device pairs the Cortex-M4 with an ARM AMBA high-bandwidth bus matrix, allowing the core, DMA channels, and peripherals to operate concurrently. The 2KB cache reduces effective flash wait states at 120 MHz, sustaining near-zero-wait-state performance for real-time control loops such as motor control and digital power conversion. Typical applications include industrial automation and motor control, consumer and embedded systems requiring a 32-bit upgrade path, and connectivity gateways using the family's advanced communication peripherals. Design consideration: verify Flash density against family variants before layout reuse - the same 100-ball TFBGA footprint serves both the 512KB ATSAM4E8C and the 1024KB ATSAM4E16C, enabling firmware-size headroom migration without PCB changes. This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4E8CB-CNR - 120MHz Cortex-M4 MCU 512KB | Microchip
ATSAM4E8CB-CNR

ATSAM4E8CB-CNR - 120MHz Cortex-M4 MCU 512KB | Microchip

The Microchip Technology ATSAM4E8CB-CNR is a 32-bit ARM Cortex-M4 microcontroller with floating point unit, running at up to 120 MHz, with 512 KB of embedded Flash memory, housed in a 100-ball TFBGA (9x9 mm) package for extended temperature operation. A microcontroller (MCU) is a single-chip computer integrating a processor core, memory, and peripherals on one die, forming the lowest layer of the embedded systems hierarchy: MCU -> embedded processor -> system-on-chip. The SAM4E series belongs to Microchip (formerly Atmel) SMART ARM-based flash MCU family, positioned for connectivity-rich industrial and consumer applications. Key features of the ATSAM4E8CB-CNR include the Cortex-M4 core with hardware FPU for single-precision math, a 2 KB cache that sustains high data bandwidth from Flash, and a rich peripheral set highlighted by an integrated 10/100 Mbps Ethernet MAC with IEEE 1588 precision time protocol support, enabling single-chip networked nodes without external MAC devices. Architecturally, the SAM4E series combines the 120 MHz Cortex-M4 with multi-layer bus matrix (HSMCI, EBI/SMC external bus interface) for parallel data throughput, plus DMA-driven peripherals that offload the CPU. The flash accelerator and cache structure minimize wait states, allowing deterministic real-time execution. Atmel-11157 is the family datasheet covering SAM4E16E/SAM4E8E/SAM4E16C/SAM4E8C devices including the ATSAM4E8C. Typical applications include industrial Ethernet-connected nodes (gateways, sensors with network interfaces), building automation controllers, consumer appliances with connectivity, and motor control systems that benefit from the FPU and 120 MHz performance. Design consideration: the 100-TFBGA (9x9 mm, 0.8 mm ball pitch) requires controlled-impedance PCB fabrication and X-ray inspection capability; confirm Ethernet magnetics pairing and supply sequencing against the family datasheet before layout. This page synthesizes distributor availability data, family datasheet references, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4E8EA-AU - 120MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4E8EA-AU

ATSAM4E8EA-AU - 120MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4E8EA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 512 KB (512K x 8) of embedded Flash memory, 2 KB instruction cache, and a 144-pin LQFP (20 x 20 mm) surface-mount package. It integrates a Floating Point Unit (FPU), DSP instructions, and a Memory Protection Unit (MPU), making it a high-performance embedded controller for connectivity-rich industrial designs. 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 processing hierarchy that spans from MCUs up to application processors and SoCs. The SAM4E family belongs to Microchip (formerly Atmel) SMART ARM-based MCU portfolio, positioned for applications that need both compute performance and rich communication peripherals. Key features of the ATSAM4E8EA-AU include the ARM Cortex-M4 core with Thumb-2 instruction set, DSP and single-cycle MAC instructions for signal processing, an FPU for efficient floating-point math, and a 2 KB cache that sustains near-zero-wait-state execution at 120 MHz. Peripheral richness includes Ethernet MAC with IEEE 1588 support, dual CAN controllers, USB device port, multiple USART/SPI/TWI serial channels, a 12-bit ADC with 2 MspS conversion capability, PWM channels, and an on-chip temperature sensor, enabling industrial networked designs with a single IC. Architecturally, the device uses a high data bandwidth multi-layer bus matrix connecting the Cortex-M4 core to Flash, SRAM, and DMA channels, allowing peripherals to transfer data without CPU intervention. The Flash accelerator and cache mitigate flash wait-state penalties at 120 MHz operation. Green industrial-grade (TEMPMRL) qualification supports extended industrial ambient temperatures. Typical applications include industrial automation gateways and PLC I/O modules using the Ethernet and dual CAN interfaces, motor control and power conversion leveraging the FPU and PWM peripherals, and embedded networking equipment, POS terminals, and building automation nodes requiring USB and Ethernet connectivity. When designing with this MCU, budget Flash wait states and use the cache-friendly code layout, and decouple all VDDIO/VDDCORE supply domains per the manufacturer datasheet layout guidance. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-20.

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ATSAM4E8EA-AUR - 120MHz ARM Cortex-M4 MCU 512KB | Microchip
ATSAM4E8EA-AUR

ATSAM4E8EA-AUR - 120MHz ARM Cortex-M4 MCU 512KB | Microchip

The Microchip Technology ATSAM4E8EA-AUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz with 512 KB (512K x 8) embedded flash and 128 KB SRAM, housed in a 144-pin LQFP (20 x 20 mm) package. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the lowest level of the embedded systems hierarchy: MCU -> embedded processor -> computing system. The SAM4E family belongs to Microchip's (formerly Atmel) SMART ARM-based MCU portfolio, targeting industrial connectivity applications that require both control performance and rich connectivity. Key features of the ATSAM4E8EA-AUR include the ARM Cortex-M4 core with a 2 KB cache, a hardware Floating Point Unit (FPU), DSP instructions, Thumb-2 instruction set support, and a Memory Protection Unit (MPU). The high data bandwidth architecture enables deterministic real-time execution while the FPU accelerates control algorithms such as PID loops and digital filtering. Technical depth: the Cortex-M4 core with 2 Kbytes cache reduces flash wait-state penalties at 120 MHz operation, while the MPU supports functional-safety-oriented software partitioning. Embedded flash allows in-field firmware updates without external memory. Typical applications include industrial automation, building and factory control, gateways and connectivity nodes, and motor control systems that leverage the DSP and FPU capability of the Cortex-M4 core. Design consideration: verify supply voltage, peripheral set, and I/O configuration against the official SAM4E datasheet before layout, and confirm the 144-LQFP (20x20) footprint dimensions against the land pattern data. This page synthesizes distributor pricing, stock status, drop-in family alternatives, and practical design guidance not consolidated in the manufacturer datasheet.

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ATSAM4E8EA-CU - Cortex-M4 120MHz 512KB MCU | Microchip
ATSAM4E8EA-CU

ATSAM4E8EA-CU - Cortex-M4 120MHz 512KB MCU | Microchip

The Microchip ATSAM4E8EA-CU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 120 MHz, with 512KB of embedded Flash memory, a 2KB instruction cache, and a floating point unit (FPU), housed in a 144-ball LFBGA package measuring 10x10 mm. A microcontroller (MCU) is a single-chip computing device that integrates a processor core, program memory, data memory, and peripherals on one die, forming the lowest level of the embedded-system hierarchy (embedded system -> MCU -> CPU core). The SAM4E series belongs to Microchip's SMART ARM-based flash MCU family, positioned for high-performance industrial and connectivity applications where 32-bit processing and hardware math acceleration are required. Key features of the ATSAM4E8EA-CU include the ARM Cortex-M4 core with DSP instructions and Thumb-2 instruction set, a Memory Protection Unit (MPU) for robust software partitioning, a 2KB cache that improves execution efficiency from Flash, and a high data bandwidth bus architecture. The 512KB (512K x 8) Flash accommodates large application images including RTOS stacks, communication protocol stacks, and OTA updatable firmware. The device operates from a 1.2 V core supply with 3.3 V I/O, and is supplied in industrial temperature grade, lead-free green LFBGA packaging. The fine-pitch ball grid array saves PCB area compared with LQFP alternatives, which matters in dense multi-board industrial designs. The built-in FPU executes single-precision floating point in hardware, removing software emulation overhead in control loops and signal processing. Typical applications include industrial automation controllers, motor control, IoT gateways, and connected sensing nodes where the Cortex-M4 performance class and Flash capacity fit control and communication duties simultaneously. Design consideration: LFBGA packages require controlled-impedance PCB fabrication with fine-pitch assembly; confirm your CMOS/PCB process supports ball pitch before layout. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4E8EB-AN - 120MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4E8EB-AN

ATSAM4E8EB-AN - 120MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4E8EB-AN is a 32-bit ARM Cortex-M4 flash microcontroller from the Atmel | SMART SAM4E series, running at up to 120 MHz with 512 KB (512K x 8) of embedded Flash and 128 KB of SRAM, housed in a 144-pin LQFP (20 x 20 mm) surface-mount package. It includes a hardware floating point unit (FPU) for efficient single-precision math. A microcontroller (MCU) is a single integrated circuit that combines a processor core, program memory, data memory, and peripherals into one chip, forming the heart of an embedded system. Within the MCU hierarchy, the SAM4E family sits in the high-performance 32-bit segment, above 8-bit AVR parts and below application processors, targeting industrial and connectivity-driven designs. Key features include the 120 MHz Cortex-M4 core with FPU, 2 KB of cache memory for predictable Flash execution, 512 KB of program Flash, and a rich peripheral set highlighted by an integrated 10/100 Ethernet MAC for networked nodes. Advanced connectivity peripherals reduce external component count and BOM cost in communication-centric products. Technically, the SAM4E architecture pairs the Cortex-M4 pipeline with a multi-layer bus matrix and 2 KB cache, sustaining near-zero-wait-state execution and deterministic interrupt latency. The on-chip Ethernet MAC with DMA offloads frame handling from the CPU, while serial peripherals (USART, SPI, I2C) and timers support industrial protocols and control loops. Extended-temperature, green (halogen-free, RoHS-oriented) packaging supports harsh industrial environments. Typical applications include industrial automation gateways and networked sensor nodes using the 10/100 Ethernet MAC, building automation and HVAC controllers, and test/measurement or data-logging systems that need the FPU for signal processing at 120 MHz. For design, budget the 512 KB Flash and 128 KB SRAM early - the cache mitigates but does not eliminate wait states, and Ethernet applications should reserve SRAM for DMA descriptors and frame buffers. Verify pin multiplexing on the 144-LQFP before finalizing the PCB, since many pins serve multiple peripheral functions. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-20.

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ATSAM4E8EB-ANR - 120MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4E8EB-ANR

ATSAM4E8EB-ANR - 120MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4E8EB-ANR is a 32-bit ARM Cortex-M4 flash microcontroller in the SAM4E series, running at 120 MHz with 512 KB of embedded flash memory and 128 KB of SRAM, housed in a 144-pin LQFP (20x20 mm) surface-mount package rated for -40C to +105C operation. A microcontroller (MCU) is a single integrated circuit that combines a processor core, memory, and peripherals into one chip, forming the basis of embedded systems. The SAM4E family sits within Microchip's SMART ARM-based MCU portfolio: Cortex-M4 core -> 32-bit microcontroller -> embedded processing. The -B suffix denotes Revision B silicon, which Microchip recommends for both prototypes and new production designs. Key features of the ATSAM4E8EB-ANR include the ARM Cortex-M4 core with an integrated floating point unit (FPU), which accelerates DSP and math-intensive firmware; a high data bandwidth bus architecture; 512 KB (512K x 8) of flash for program storage; and 128 KB of SRAM for data buffers and stack. The extended industrial temperature grade (-40C to +105C) supports harsh environments. Architecturally, the SAM4E8E targets applications needing both processing throughput and rich connectivity, with a multi-layer bus matrix that lets DMA, Ethernet-class peripherals, and the core operate concurrently with minimal contention. The 120 MHz clock enables single-cycle flash access with prefetch buffering to keep pipeline stalls low. Typical applications include industrial automation controllers, networking and communication equipment, and embedded systems requiring deterministic floating point processing such as motor control and sensing nodes. When designing with this device, verify that your supply chain references the Revision B silicon (-B suffix), since Microchip recommends Revision B for new designs and production, while earlier steppings may differ errata-wise. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, adding sourcing and selection value beyond raw specification tables.

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ATSAM4E8EB-CN - 120MHz Cortex-M4 MCU 512KB Flash | Microchip
ATSAM4E8EB-CN

ATSAM4E8EB-CN - 120MHz Cortex-M4 MCU 512KB Flash | Microchip

The Microchip Technology ATSAM4E8EB-CN is a 32-bit ARM Cortex-M4 flash microcontroller with integrated FPU, running at 120 MHz, with 512KB of embedded Flash and a 144-ball LFBGA (10x10 mm) package. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, memory, and programmable peripherals on one die, sitting within the broader hierarchy of semiconductor devices: Cortex-M4 core -> ARM 32-bit MCU -> microcontroller -> embedded processor. The SAM4E series belongs to Atmel (now Microchip) SMART ARM-based Flash MCU family, designed for connectivity-centric embedded systems. Key features include the high-performance Cortex-M4 core with hardware floating point unit (FPU), 2KB instruction cache for improved flash execution efficiency, and 128KB of SRAM for data buffering. The SAM4E family integrates advanced connectivity peripherals, most notably a 10/100 Ethernet MAC, alongside UART, USART, SPI, I2C (TWI) and CAN interfaces, plus a 12-bit ADC and PWM channels for control tasks. The device operates from 1.2V, 2.5V, and 3.3V supply domains per the Arrow listing, with extended temperature support per Mouser data. Technically, the SAM4E achieves 1.25 DMIPS/MHz from the Cortex-M4 pipeline, and the 2KB cache allows zero-wait-state execution from Flash at 120 MHz, mitigating flash access latency. The Ethernet MAC with DMA offloads network stack processing from the CPU, making it well suited for connected industrial nodes. Typical applications include industrial Ethernet gateways, building automation and HVAC controllers, networked sensor nodes, and motor-control systems where the FPU accelerates control-loop math. Design consideration: BGA packages require controlled-impedance PCB stackups and X-ray inspection capability; plan the fanout strategy early and consider the LQFP-packaged SAM4E8EA sibling if BGA assembly is not available. This page synthesizes distributor availability, drop-in family alternatives, pricing tiers, and practical design notes not found in the manufacturer datasheet. Pricing shown as of 2026-09-20.

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ATSAM4LC2AA-AU - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
ATSAM4LC2AA-AU

ATSAM4LC2AA-AU - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology (Atmel) ATSAM4LC2AA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 128KB of embedded flash memory, housed in a 48-pin TQFP (7x7 mm) package. It delivers class-leading low-power operation: 90 uA/MHz in active mode, 1.5 uA in sleep mode, and wake-up times down to 1.5 us. 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.

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ATSAM4LC2AA-AUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
ATSAM4LC2AA-AUR

ATSAM4LC2AA-AUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4LC2AA-AUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 128 KB of embedded flash memory and a 48-pin TQFP (7x7 mm) package. It belongs to the ultra-low-power SAM4L family, delivering the lowest active-mode consumption in its class at 90 uA/MHz, 1.5 uA in sleep mode, and wake-up times as short as 1.5 us. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, sitting at the heart of embedded systems as part of the wider hierarchy of semiconductor devices: MCU -> 32-bit MCU -> ARM Cortex-M MCU -> flash microcontroller. The SAM4L family positions itself at the low-power end of the 32-bit MCU spectrum, targeting battery-powered and energy-harvesting designs. Key differentiating features include the hardware-based Peripheral Event System that lets peripherals communicate without CPU intervention, a built-in LCD controller for segment and dot-matrix glass, AES/DES hardware cryptography, and a flexible, low-leakage power architecture with multiple sleep modes and a Backup mode drawing under 1 uA. Peripherals include USB (device/host), TWI/I2C, SPI, UART/USART, an ADC, and multiple timers. Architecturally, the Cortex-M4 core with integrated NVIC and single-cycle multiply executes from flash with a prefetch buffer, while the PDCA (Peripheral DMA Controller) offloads data movement from the CPU, directly enabling the 90 uA/MHz figure by shortening active periods. The SCIF (System Control Interface) manages oscillators, PLLs, and the DFLL for flexible clocking at minimal power. Typical applications include battery-powered metering, wearable and handheld devices with LCD glass, sensor nodes, and low-power industrial control. The LCD controller plus cryptography make it especially strong for smart meters and secure portable products. Design consideration: exploit the Peripheral Event System and sleep modes aggressively; keeping the CPU asleep between events is the primary path to the datasheet power figures. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4LC2AA-MUR - Cortex-M4 48MHz 128KB Flash MCU | Microchip
ATSAM4LC2AA-MUR

ATSAM4LC2AA-MUR - Cortex-M4 48MHz 128KB Flash MCU | Microchip

The Microchip Technology (Atmel) ATSAM4LC2AA-MUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 128KB of Flash memory, housed in a 48-pin QFN (7x7 mm) package with exposed pad. It belongs to the SAM4L family, which delivers class-leading efficiency with 90 uA/MHz active-mode current, 1.5 uA sleep-mode current, and wake-up times down to 1.5 us. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripherals on one die; within the power-management hierarchy of embedded systems, ultra-low-power MCUs like the SAM4L sit between simple 8-bit controllers and high-performance application processors, targeting battery-powered and energy-harvesting designs. Key differentiating features include an embedded hardware capacitive touch controller (QTouch) supporting up to 13 touch channels, USB device and embedded host operation, and a 128-bit AES cryptographic accelerator for secure data handling. A segment LCD controller drives displays directly, and high-speed serial peripherals (USART, SPI, I2C) plus audio interfaces cover most connectivity needs. Technically, the Cortex-M4 core provides single-cycle DSP instructions and hardware floating-point acceleration, while the Peripheral Event System and SleepWalking architecture allow peripherals to communicate and process data autonomously while the CPU sleeps, dramatically cutting average power consumption in duty-cycled systems. Typical applications include battery-powered metering, wearable and handheld devices, capacitive-touch human-machine interfaces with LCD feedback, and USB-connected sensor nodes where microamp sleep currents determine battery service life. Design consideration: the 48-QFN exposed-pad package requires a solid ground vias array under the pad for both thermal dissipation and signal integrity; budget GPIO carefully, as the 48-pin footprint limits available I/O. This page synthesizes distributor pricing from LCSC, DigiKey and Mouser, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4LC2BA-AU - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
ATSAM4LC2BA-AU

ATSAM4LC2BA-AU - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4LC2BA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at 48 MHz with 128KB of Flash memory and 32KB of SRAM, housed in a 64-pin TQFP (10x10 mm) surface-mount package. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripheral functions such as ADCs, timers, and serial interfaces onto one die. The ATSAM4LC2BA-AU belongs to the voltage-regulator-adjacent class of power management in the sense of system power budgets: within the MCU taxonomy it sits at ARM Cortex-M4 > SAM4L series > low-power flash microcontroller > embedded processor > semiconductor IC. Key differentiating features include industry-leading low power: approximately 90 uA/MHz in active mode, 1.5 uA in sleep mode, and wake-up times down to 1.5 us, which Microchip identifies as the shortest wake-up time among Cortex-M4-based devices. The part integrates cryptographic acceleration (CRYPTO/AES) and offers 10-bit and 12-bit ADC options per distributor listings. The Cortex-M4 core includes a hardware FPU and DSP instructions, enabling efficient signal processing at only 48 MHz. Architecturally, the SAM4L series uses a low-power design methodology that allows individual peripherals to be clock-gated and power-domained, so battery-operated systems spend the majority of time in low-leakage states while retaining fast responsiveness. The 128KB Flash with the flash accelerator achieves near-zero-wait-state execution for most code. Typical applications include battery-powered sensor nodes, portable medical monitoring devices, smart metering, industrial sensor interfaces, and any battery life-critical IoT endpoint that still requires FPU/DSP-class computation. Design consideration: the -AU suffix denotes the industrial-temperature, TQFP-64 (Green) variant; verify supply voltage and peripheral pin mapping against the official datasheet before PCB layout, as SAM4L peripheral multiplexing is flexible but pin-specific. This page synthesizes distributor pricing, drop-in alternatives within the SAM4L family, and practical design guidance not found in the manufacturer datasheet, giving engineers a single citable reference for the ATSAM4LC2BA-AU.

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ATSAM4LC2BA-AUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
ATSAM4LC2BA-AUR

ATSAM4LC2BA-AUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4LC2BA-AUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 128KB of flash memory, housed in a 64-pin TQFP (10x10 mm) package in the SAM4L series. It operates from a 1.8V, 2.5V, or 3.3V supply and delivers industry-leading low-power performance: 90 uA/MHz in active mode, 1.5 uA in sleep mode, and a wake-up time as short as 1.5 us. A microcontroller unit (MCU) is a single-chip embedded computer combining a processor core, memory, and peripherals. Within the power-management hierarchy, low-power MCUs like the SAM4L sit at the heart of battery-powered and energy-harvesting systems, where sleep-mode current and wake-up latency directly determine battery life. The SAM4L family is Microchip's (formerly Atmel's) ultra-low-power Cortex-M4 line optimized for sleepwalking peripherals and fast context restoration. Key differentiating features of the ATSAM4LC2BA-AUR include the 48 MHz Cortex-M4 core with DSP instructions and hardware crypto capability, 128KB of embedded flash, industrial temperature qualification, and green (RoHS-oriented) packaging. The MRL designation indicates Microchip's multi-market reel labeling; the "B" suffix denotes the cache-equipped device variant. Its peripheral set and low-power modes allow systems to keep data acquisition running while the CPU sleeps, using the sleepwalking feature to wake only when data is ready. Technically, the device leverages the ARM Cortex-M4 32-bit RISC architecture with a nested vectored interrupt controller and an efficient flash accelerator, achieving near-zero-wait-state execution at 48 MHz. The ultra-low active current of 90 uA/MHz stems from Microchip's low-leakage process and fine-grained clock gating; sleep modes down to 1.5 uA retain SRAM and register context, and wake-up in 1.5 us makes intermittent operation practical for event-driven designs. Typical applications include battery-powered sensor nodes, energy metering, portable medical devices, and industrial data loggers, where the 1.5 us wake-up enables servicing sporadic events without maintaining high current draw. The hardware crypto supports secure IoT nodes. Design consideration: power budget calculations should weight active-mode uA/MHz against duty cycle; a system waking every second for a few milliseconds of 48 MHz computation averages microamps, so minimizing wake-up frequency dominates battery life. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical low-power design notes not consolidated in the manufacturer datasheet.

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ATSAM4LC2BA-MUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
ATSAM4LC2BA-MUR

ATSAM4LC2BA-MUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4LC2BA-MUR is a 32-bit ARM Cortex-M4 flash microcontroller with 128KB (128K x 8) flash, 32KB (32K x 8) SRAM, and a 48MHz core operating from a 1.62V to 3.6V supply, housed in a 64-pin QFN (9x9 mm) package with exposed pad. A microcontroller (MCU) is a single-chip computer integrating a processor core, program memory, data memory, and peripherals. The SAM4L family sits in the ARM Cortex-M4 class of 32-bit MCUs, part of the wider microcontroller hierarchy used in embedded systems for low-power sensing, touch interfaces, and USB-connected applications. Key features include class-leading low-power figures of 90 uA/MHz in active mode and 1.5 uA in sleep mode, wake-up times down to 1.5 us, 21 capacitive touch channels driven by the peripheral touch controller (PTC), a USB 2.0 full-speed device interface, and multiple sleep and backup modes. A hardware AES cryptographic module and an on-board 12-bit ADC and DAC round out the analog and security capabilities. Technically, the Cortex-M4 core with flexible power-clocked domains allows each peripheral to be individually clocked and power-gated, which is how the ATSAM4LC2BA achieves its industry-low active and sleep consumption while retaining rapid wake-up - critical for duty-cycled battery designs. Typical applications include battery-powered metering and sensor nodes, capacitive touch user interfaces, USB-connected handheld instruments, and wearable or IoT devices where battery life is the primary design constraint. Design consideration: because the 64-QFN exposed pad is the main ground and thermal path, ensure the PCB provides a solid ground plane connected to the pad with an array of thermal vias. This page adds value beyond the datasheet by synthesizing distributor pricing, drop-in alternatives within the SAM4L family, application guidance, and design notes in one place.

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ATSAM4LC2CA-AU - 48MHz Cortex-M4 MCU 128KB Flash | Microchip
ATSAM4LC2CA-AU

ATSAM4LC2CA-AU - 48MHz Cortex-M4 MCU 128KB Flash | Microchip

The Microchip Technology ATSAM4LC2CA-AU is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz, integrating 128 KB of embedded flash memory and 32 KB of SRAM in a 100-pin TQFP (14x14 mm) surface-mount package. It belongs to the SAM4L family, which Microchip (formerly Atmel) positions as the lowest-power Cortex-M4-based MCU family, consuming 90 uA/MHz in active mode, 1.5 uA in sleep mode, and offering wake-up times down to 1.5 us. A microcontroller unit (MCU) is a single-chip embedded processor that combines a CPU core, program memory, data memory, and peripherals on one die. Within the semiconductor hierarchy, the ATSAM4LC2CA-AU is a member of the MCU class: integrated circuit > embedded processor > microcontroller > ARM Cortex-M4 flash MCU. MCUs replace multi-chip CPU-plus-memory solutions in embedded systems where cost, power, and board area dominate. Key differentiating features include hardware cryptography (AES, DES, triple-DES accelerator), an integrated segment LCD controller, USB host and device support, 16-channel DMAC for autonomous data transfers, and an extensive peripheral set: 7 timers, 4 comparators, 4 USARTs, and 4 TWI (I2C) interfaces, plus multiple SPI ports. The peripheral event system lets peripherals communicate without CPU intervention, further reducing active-mode energy. Architecturally, the Cortex-M4 core provides a 3-stage pipeline, single-cycle MAC, and DSP-oriented instructions. Microchip's picoPower techniques, multi-layer bus matrix, and sleepwalking peripherals (which operate while the CPU sleeps) enable battery-powered designs with multi-year battery life. The integrated hardware crypto engine offloads AES/DES encryption without software overhead, valuable for secure IoT nodes. Typical applications include battery-powered metering, portable medical instruments, industrial sensor nodes with segment-LCD displays, and secure connected devices. The LCD controller directly drives glass displays, eliminating an external LCD driver IC. Design consideration: the SAM4L operates from a 1.62 V to 3.6 V supply; plan brown-out and BOD33 settings early, and use the sleepwalking ADC/USART modes to maximize sleep duty cycle. This page synthesizes drop-in family alternatives, comparison tables, and practical design notes not found in the manufacturer datasheet, with pricing as of 2026-09-20 available on request.

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ATSAM4LC2CA-AUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip
ATSAM4LC2CA-AUR

ATSAM4LC2CA-AUR - 48MHz Cortex-M4 MCU, 128KB Flash | Microchip

The Microchip Technology ATSAM4LC2CA-AUR is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 128KB of embedded flash memory, housed in a 100-pin TQFP (14x14 mm) package for industrial-temperature applications. A microcontroller unit (MCU) integrates a processor core, memory, and programmable peripherals on a single chip, sitting at the center of the embedded systems hierarchy - above simple logic ICs and below full application processors. The SAM4L family belongs to Microchip's (formerly Atmel) ARM-based flash MCU portfolio, targeting low-power embedded designs within the broader power-management-conscious MCU market. Key features include the lowest active-mode consumption in its class at 90 uA/MHz, deep sleep mode at just 1.5 uA, and the shortest wake-up time of any Cortex-M4-based device at down to 1.5 us, per the manufacturer's product data. The device integrates an LCD controller, hardware cryptography, and USB host capability, reducing external component count in human-interface and secure connected designs. Technically, the SAM4LC2C implements the ARM Cortex-M4 RISC core with a three-stage pipeline and efficient interrupt handling (NVIC), balancing compute performance against the family's dominant design goal: energy efficiency across active, sleep, and wake-up states. The 1.8V/3.3V supply capability with a 1.68V minimum matches both coin-cell and USB-powered architectures. Typical applications include battery-powered metering with segmented LCDs, portable medical devices, industrial sensors, and security products leveraging the hardware crypto engine and USB host port. Design consideration: exploit the 1.5 us wake-up time by aggressively cycling between sleep and active states rather than reducing clock frequency, which maximizes the 90 uA/MHz efficiency advantage. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4LC2CA-CFU - ARM Cortex-M4 48MHz 128KB Flash MCU | Microchip
ATSAM4LC2CA-CFU

ATSAM4LC2CA-CFU - ARM Cortex-M4 48MHz 128KB Flash MCU | Microchip

The Microchip Technology ATSAM4LC2CA-CFU (originally Atmel SAM4L series) is a 32-bit ARM Cortex-M4 flash microcontroller running at up to 48 MHz with 128 KB (128K x 8) of FLASH program memory, 32 KB of SRAM, and a hardware cryptography engine, housed in a 100-ball VFBGA (7 x 7 mm) package rated for the industrial temperature range. A 32-bit microcontroller (MCU) is a complete computing system on a single chip, combining a processor core, program memory, data memory, and a rich set of peripherals. Within the power-management hierarchy of an embedded system, an MCU such as the SAM4L sits at the control layer, orchestrating sensors, communication interfaces, displays, and actuators while managing its own power budget. The ARM Cortex-M4 core used here adds DSP instructions and single-cycle MAC for efficient signal processing. Key features of the ATSAM4LC2CA-CFU include the ultra-low-power SAM4L platform architecture, supply operation from 1.68 V to 3.6 V (1.8 V, 2.5 V, or 3.3 V systems), and an integrated cryptography engine (the Mouser listing identifies this as CRYPTO variant). The SAM4L family is known for its low-power modes, sleepwalking peripherals, and energy-efficient peripheral event system that allows autonomous operation without CPU intervention. Technically, the device executes the ARM Cortex-M4 RISC instruction set, providing 32-bit processing with deterministic interrupt handling suitable for real-time embedded applications. The 128 KB flash is in-system programmable, and the 32 KB SRAM supports demanding buffering and DSP workloads at the 48 MHz maximum clock frequency. Typical applications include battery-powered IoT sensor nodes, portable medical monitoring devices, low-power industrial sensing, and secure connected products where the crypto engine accelerates authentication tasks. When designing with this part, plan power distribution for the 1.68 V to 3.6 V supply range and account for the BGA package reflow requirements, since the 7 x 7 mm 100-ball array requires X-ray inspection capability for quality control. This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the standard manufacturer datasheet.

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ATSAM4LC2CA-CFUR - Cortex-M4 48MHz 128KB MCU | Microchip
ATSAM4LC2CA-CFUR

ATSAM4LC2CA-CFUR - Cortex-M4 48MHz 128KB MCU | Microchip

The Microchip Technology ATSAM4LC2CA-CFUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 48 MHz with 128KB (128K x 8) of embedded Flash memory, housed in a 100-ball VFBGA (7x7 mm) package on tape and reel. It operates from a 1.62V to 3.6V supply (1.8V, 2.5V, and 3.3V nominal rails) across the industrial temperature range. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one die. MCUs sit at the heart of the embedded systems hierarchy - below application processors and above dedicated ASICs - and the SAM4L family belongs to the 32-bit ARM Cortex-M class of flash microcontrollers used for low-power control and connectivity tasks. Key features of the ATSAM4LC2CA-CFUR include the high-performance ARM Cortex-M4 RISC core with 48 MHz maximum frequency, 128KB on-chip Flash for program storage, and the low-power SAM4L architecture that emphasizes energy-efficient operation. The VFBGA-100 (7x7 mm) ball grid array minimizes board area for space-constrained designs, and per distributor listings the device integrates cryptographic hardware support (CRYPTO) and carries RoHS-green packaging. Technically, the SAM4L series implements the ARMv7E-M architecture with a 3-stage pipeline, providing DSP-oriented instructions and efficient interrupt handling. The die is fabricated for industrial-grade operation, and Microchip (via the Atmel acquisition) supplies the 1200-plus-page SAM4L datasheet covering power modes, peripheral sets, and memory organization for the family. Typical applications include battery-powered portable instruments, industrial sensors and actuators, building automation nodes, and consumer devices that need 32-bit processing in a compact 7x7 mm footprint. The Cortex-M4 core with DSP capability suits digital filtering and control loops, while the low-power design supports long battery life. When designing with this device, confirm the exact supply range and peripheral mapping against the manufacturer datasheet before layout, and verify BGA land pattern and reflow profile compatibility for the 0.8 mm ball pitch VFBGA package. This page synthesizes distributor pricing context, drop-in alternatives within the SAM4L family, and practical design notes not found in a single manufacturer datasheet, giving engineers and buyers a consolidated reference for the ATSAM4LC2CA-CFUR.

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ATSAM4LC4AA-AU - 48MHz Cortex-M4 256KB Flash MCU | Microchip
ATSAM4LC4AA-AU

ATSAM4LC4AA-AU - 48MHz Cortex-M4 256KB Flash MCU | Microchip

The Microchip ATSAM4LC4AA-AU (originally Atmel) is a 32-bit ARM Cortex-M4 flash microcontroller operating at up to 48 MHz with 256 KB (256K x 8) of FLASH program memory and 32 KB of SRAM, housed in a 48-pin TQFP (7x7 mm) surface-mount package. A microcontroller (MCU) is a single-chip integrated circuit that combines a processor core, program memory, data memory, and peripherals into one device, forming the lowest layer of the embedded-system hierarchy above discrete logic and below application processors. The SAM4L series belongs to Microchip's ARM-based flash MCU portfolio and targets ultra-low-power embedded applications where battery life and wake-up responsiveness dominate the design. The defining strength of the ATSAM4LC4AA-AU is power efficiency: it delivers approximately 90 uA/MHz in active mode, 1.5 uA in sleep mode, and one of the shortest wake-up times in any Cortex-M4-based device at down to 1.5 microseconds. These figures allow duty-cycled battery products to spend most of their life asleep yet react near-instantly to events. The supply voltage range is 1.68 V to 3.6 V, accommodating single-cell lithium and 3.3 V rails directly. The ARM Cortex-M4 core provides 32-bit RISC execution with DSP-oriented instructions, enabling efficient signal processing such as sensor filtering without a separate DSP. The SAM4L family architecture integrates a flexible power management controller with multiple sleep modes, letting firmware gate clocks and domains per peripheral. Flash memory of 256 KB is executed in place, and the 32 KB SRAM supports buffering for wireless stacks and data logging. Typical applications include battery-powered IoT sensor nodes, portable medical and measurement instruments, capacitive-touch human-machine interfaces, and industrial sensing endpoints where 90 uA/MHz active current directly extends field life. The 48 MHz performance headroom also suits lightweight motor control and data-acquisition tasks. A key design consideration is that the SAM4L platform uses a 1.8 V to 3.3 V logic domain; interface 5 V systems through level shifters. Enable the device's low-power sleep modes and per-peripheral clock gating in firmware to realize the datasheet current figures. This page synthesizes distributor availability data, same-family drop-in options, pricing guidance, and practical design notes beyond what the manufacturer datasheet alone provides.

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ATSAM4LC4AA-MU - 48MHz Cortex-M4 MCU 256KB Flash | Microchip
ATSAM4LC4AA-MU

ATSAM4LC4AA-MU - 48MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4LC4AA-MU is a 32-bit ARM Cortex-M4 flash microcontroller from the SAM4L series operating at 48 MHz with 256KB of embedded flash memory, 32KB of SRAM, and a 48-pin QFN (7x7 mm) exposed-pad package. A microcontroller unit (MCU) is a single integrated circuit that combines a processor core, memory, and programmable peripherals into one chip, forming the lowest tier of the embedded-computing hierarchy: MCU -> embedded processor -> system-on-chip -> embedded system. The ATSAM4LC4AA-MU belongs to the low-power SAM4L family of ARM Cortex-M4 microcontrollers, which targets battery-powered and energy-conscious designs. Key features include the 48 MHz ARM Cortex-M4 core with a 32-bit RISC architecture, 256KB (256K x 8) of flash program memory for code and data storage, and 32KB of SRAM for runtime variables and buffers. The SAM4L series integrates peripherals such as segment LCD controllers, hardware capacitive touch (QTouch), USB device and embedded host, 128-bit AES encryption, and audio interfaces, plus high-speed serial peripherals including USART, SPI, and I2C, according to the Atmel SAM4L datasheet summary. Technically, the Peripheral Event System and SleepWalking features allow peripherals to communicate directly with each other and wake selectively from low-power sleep states without CPU intervention, a hallmark of the SAM4L low-power design philosophy. Industrial temperature rating supports operation in harsh environments. Typical applications include battery-powered sensor nodes, consumer and industrial devices with segment LCD displays, capacitive-touch control panels, and secure connected devices leveraging the embedded AES engine. A key design consideration is that this member of the family carries 256KB flash and 32KB SRAM; if code size grows, the pin-compatible denser variants within the SAM4L family should be evaluated at board design time. This page synthesizes distributor pricing, drop-in alternatives, comparison data, and practical design notes not found in the manufacturer datasheet.

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