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ATSAM4S4CB-AN - 120MHz Cortex-M4, 256KB Flash MCU | Microchip
ATSAM4S4CB-AN

ATSAM4S4CB-AN - 120MHz Cortex-M4, 256KB Flash MCU | Microchip

The Microchip Technology ATSAM4S4CB-AN is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB flash and 64 KB SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package with industrial temperature rating from -40C to +105C. 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-computing hierarchy: microcontroller -> embedded processor -> system-on-chip -> computing system. The SAM4S family is Microchip (formerly Atmel) ARM Cortex-M4-based flash MCU line, positioned for cost-sensitive designs that still need DSP-class math capability from the core's single-cycle MAC and hardware FPU-free thumb-2 instruction set. Key features include the 120 MHz maximum clock frequency, 256 KB (256K x 8) of on-chip flash program memory, 64 kB of data SRAM, 79 general-purpose I/O lines, and a 12-bit ADC. The wide 1.2V/3.3V operating supply support and LQFP GREEN, MRL B packaging simplify both design and assembly. Technically, the SAM4S implements an ARM Cortex-M4 RISC core with a 3-stage pipeline and Harvard architecture, plus a multi-layer bus matrix that lets flash execution and peripheral DMA operate concurrently. The 12-bit ADC, multiple USART/SPI/TWI serial channels, PWM timers, and USB device connectivity cover most industrial interface needs without external components. Typical applications include industrial automation and factory control nodes, consumer appliance controllers, and measurement or data-logging instruments where 256 KB flash and 79 I/O lines give adequate headroom for RTOS-based firmware. Design consideration: supply the core from the integrated regulator (1.2V) and I/O from 3.3V, and decouple both rails close to the package to guarantee 120 MHz operation across the full industrial temperature range. This page synthesizes distributor pricing, drop-in alternatives, pinout resources, and practical design notes not found in the manufacturer datasheet. Pricing is as of 2026-09-20.

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ATSAM4S4CB-ANR - 120MHz Cortex-M4, 256KB Flash MCU | Microchip (Tape & Reel)
ATSAM4S4CB-ANR

ATSAM4S4CB-ANR - 120MHz Cortex-M4, 256KB Flash MCU | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S4CB-ANR is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB flash and 64 KB SRAM, housed in a 100-pin LQFP (14x14 mm) surface-mount package with industrial temperature rating from -40C to +105C. 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-computing hierarchy: microcontroller -> embedded processor -> system-on-chip -> computing system. The SAM4S family is Microchip (formerly Atmel) ARM Cortex-M4-based flash MCU line, positioned for cost-sensitive designs that still need DSP-class math capability from the core's single-cycle MAC and hardware FPU-free thumb-2 instruction set. Key features include the 120 MHz maximum clock frequency, 256 KB (256K x 8) of on-chip flash program memory, 64 kB of data SRAM, 79 general-purpose I/O lines, and a 12-bit ADC. The wide 1.2V/3.3V operating supply support and LQFP GREEN, MRL B packaging simplify both design and assembly. Technically, the SAM4S implements an ARM Cortex-M4 RISC core with a 3-stage pipeline and Harvard architecture, plus a multi-layer bus matrix that lets flash execution and peripheral DMA operate concurrently. The 12-bit ADC, multiple USART/SPI/TWI serial channels, PWM timers, and USB device connectivity cover most industrial interface needs without external components. Typical applications include industrial automation and factory control nodes, consumer appliance controllers, and measurement or data-logging instruments where 256 KB flash and 79 I/O lines give adequate headroom for RTOS-based firmware. Design consideration: supply the core from the integrated regulator (1.2V) and I/O from 3.3V, and decouple both rails close to the package to guarantee 120 MHz operation across the full industrial temperature range. This page synthesizes distributor pricing, drop-in alternatives, pinout resources, and practical design notes not found in the manufacturer datasheet. Pricing is as of 2026-09-20.

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ATSAM4S4CB-CFN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
ATSAM4S4CB-CFN

ATSAM4S4CB-CFN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CB-CFN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 256 KB (256K x 8) single-cycle Flash memory and a 100-ball VFBGA (7x7 mm) package. A microcontroller unit (MCU) is a complete embedded computer on a single chip, combining a processor core, memory, and peripherals. The ARM Cortex-M4 is a 32-bit RISC processor core widely used in embedded systems, positioned above entry-level Cortex-M0 parts and below high-performance application processors. Within the power/performance hierarchy, MCUs like this sit at the heart of the embedded processing chain: semiconductor -> 32-bit MCU -> ARM Cortex-M4 -> SAM4S series. Key differentiating features include the 120 MHz maximum core frequency, the Cortex-M4 DSP instructions and optional floating-point acceleration for math-heavy workloads, and a compact 7x7 mm ball-grid-array footprint suited to space-constrained boards. Per the SAM4S family datasheet, the series integrates a full-speed USB Device port with embedded transceiver, up to 160 KB of SRAM across family variants, dual-bank Flash options, and a rich peripheral set including UART/USART, SPI, TWI (I2C), ADC, PWM, and a real-time clock. Technically, the ATSAM4S4CB-CFN implements a Harvard architecture with a memory protection unit, supports 1.2V/3.3V supply domains per distributor specifications, and is rated for the industrial temperature range with a 105C maximum rating noted by Mouser for the GREEN, MRL B ball-matrix variant. The VFBGA100 substrate provides short interconnects that improve signal integrity and reduce board area compared with quad flat-pack equivalents. Typical applications include industrial control panels, consumer devices requiring USB connectivity, data-logging systems, motor control front-ends, and embedded gateways where DSP filtering and compact BGA packaging matter. Design consideration: BGA packages require X-ray inspection for solder-joint verification and a controlled-reflow PCB process; verify the 0.8 mm ball pitch against your fabricator capabilities before committing to the 7x7 mm VFBGA footprint. This page synthesizes verified distributor data, same-footprint drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4CB-CFNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
ATSAM4S4CB-CFNR

ATSAM4S4CB-CFNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CB-CFNR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 256 KB of embedded Flash and 64 KB of SRAM, housed in a 100-ball VFBGA (7x7 mm) package rated for ambient temperatures up to 105 C. A microcontroller (MCU) is a single-chip computer that integrates a processor core, memory, and peripheral set on one die, forming the lowest layer of the embedded system hierarchy: MCU -> embedded processor -> system-on-chip. The SAM4S family sits within Microchip's (formerly Atmel) ARM-based MCU portfolio and belongs to the Cortex-M class of 32-bit RISC controllers, which are widely used where deterministic real-time behavior and low power matter more than raw throughput. Key differentiators of the ATSAM4S4CB-CFNR include the Cortex-M4 core with DSP instructions and FPU-free integer pipeline, 120 MHz maximum clock frequency, 256 KB of single-cycle Flash, and a rich peripheral mix typical of the SAM4S series. The compact 7x7 mm VFBGA-100 footprint provides high I/O density in minimal board area, making it attractive for space-constrained designs that still need substantial connectivity and processing headroom. Architecturally, the device uses a 3-stage pipelined Harvard-architecture Cortex-M4 with a nested vectored interrupt controller (NVIC), enabling deterministic interrupt latency. Flash and SRAM are tightly coupled to the core bus matrix, and the Flash accelerator buffers help sustain near-zero-wait-state execution at full speed. The SAM4S series is supported by Microchip's Atmel Studio / MPLAB X ecosystem and the SAM4S-XPLAINED evaluation platform, with a well-documented peripheral driver library. Typical applications include industrial control and factory automation nodes, consumer and portable devices, and embedded networking or data-logging equipment where the 105 C ambient rating and industrial temperature behavior provide design margin. The BGA package suits two-sided, dense PCB assemblies such as sensor hubs and compact HMI boards. A key design consideration: VFBGA packages demand precise PCB land patterns and reflow profiling, and the balls are not probe-friendly for debugging - plan access to SWD test points early. Verify the exact SAM4S4CB-CFNR pin configuration against the manufacturer datasheet before layout. This page synthesizes distributor pricing tiers, drop-in alternatives, design notes, and FAQ content not consolidated in the manufacturer datasheet, providing engineers a single actionable reference.

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ATSAM4S4CB-CN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip (Tape & Reel)
ATSAM4S4CB-CN

ATSAM4S4CB-CN - 120MHz Cortex-M4 MCU 256KB Flash | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S4CB-CN is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB of embedded Flash memory and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package qualified for extended temperature operation up to 105C. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripherals on one die. Within the semiconductor hierarchy, the ATSAM4S4CB-CN belongs to the ARM Cortex-M family of 32-bit MCUs, which sits under the broader categories of embedded processors and system-on-chip devices. The SAM4S series is Microchip's (formerly Atmel) mainstream Flash MCU line for cost-sensitive embedded control. Key features include the ARM Cortex-M4 core with DSP instructions and single-cycle MAC, 120 MHz maximum clock frequency, 256 KB (256K x 8) on-chip Flash, 64 KB SRAM, and a rich peripheral set including 3 SPI ports, 4 UARTs, and 2 I2C interfaces as confirmed by distributor parametric data. Internal oscillator options at 4, 8, 12 MHz plus 32 kHz reduce external component count. The Cortex-M4 architecture brings hardware divide, DSP extensions, and FPU-class math throughput suited to digital filtering and motor control algorithms, while the SAM4S peripheral bus supports fast DMA-driven data movement. Extended temperature rating to 105C and Microchip's GREEN, RoHS-oriented TFBGA packaging target industrial and outdoor deployments. Typical applications include industrial automation nodes, motor control and power conversion, embedded IoT sensor gateways, and portable instrumentation, where 120 MHz headroom and 256 KB Flash cover protocol stacks plus application code. Design consideration: 9x9 mm 100-ball TFBGA demands fine-pitch PCB design with controlled-impedance fan-out; verify your assembly house supports 0.8 mm ball pitch BGA inspection. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S4CB-CNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip
ATSAM4S4CB-CNR

ATSAM4S4CB-CNR - 120MHz Cortex-M4 MCU 256KB Flash | Microchip

The Microchip Technology ATSAM4S4CB-CNR is a 32-bit ARM Cortex-M4 microcontroller running at 120 MHz with 256 KB of embedded Flash memory and 64 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package qualified for extended temperature operation up to 105C. A microcontroller unit (MCU) is a single-chip embedded computer that integrates a processor core, memory, and peripherals on one die. Within the semiconductor hierarchy, the ATSAM4S4CB-CNR belongs to the ARM Cortex-M family of 32-bit MCUs, which sits under the broader categories of embedded processors and system-on-chip devices. The SAM4S series is Microchip's (formerly Atmel) mainstream Flash MCU line for cost-sensitive embedded control. Key features include the ARM Cortex-M4 core with DSP instructions and single-cycle MAC, 120 MHz maximum clock frequency, 256 KB (256K x 8) on-chip Flash, 64 KB SRAM, and a rich peripheral set including 3 SPI ports, 4 UARTs, and 2 I2C interfaces as confirmed by distributor parametric data. Internal oscillator options at 4, 8, 12 MHz plus 32 kHz reduce external component count. The Cortex-M4 architecture brings hardware divide, DSP extensions, and FPU-class math throughput suited to digital filtering and motor control algorithms, while the SAM4S peripheral bus supports fast DMA-driven data movement. Extended temperature rating to 105C and Microchip's GREEN, RoHS-oriented TFBGA packaging target industrial and outdoor deployments. Typical applications include industrial automation nodes, motor control and power conversion, embedded IoT sensor gateways, and portable instrumentation, where 120 MHz headroom and 256 KB Flash cover protocol stacks plus application code. Design consideration: 9x9 mm 100-ball TFBGA demands fine-pitch PCB design with controlled-impedance fan-out; verify your assembly house supports 0.8 mm ball pitch BGA inspection. This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S8BA-AN - SAM4S 120MHz Cortex-M4 MCU 512KB | Microchip
ATSAM4S8BA-AN

ATSAM4S8BA-AN - SAM4S 120MHz Cortex-M4 MCU 512KB | Microchip

The Microchip ATSAM4S8BA-AN is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, integrating 512KB of Flash and 128KB of SRAM, and operating at up to 120 MHz in a 64-pin LQFP (10x10 mm) form factor. The device supplies 3.2 to 3.6 V on its main VDDIO/VDDCORE rail and supports a wider 1.62 V to 3.6 V operating range when the internal voltage regulator is enabled, drawing approximately 200 uA/MHz in active mode. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. Within the broader taxonomy, the ATSAM4S8BA-AN belongs to the class of ARM Cortex-M4 microcontrollers -> 32-bit microcontrollers -> embedded microcontrollers -> microcontrollers -> integrated circuits (ICs) -> semiconductors. Cortex-M4 devices specifically add single-precision FPU support, DSP extensions, and a Memory Protection Unit (MPU), placing them above Cortex-M3 in computational capability while retaining deterministic interrupt latency. Key features include a hardware Floating Point Unit (FPU) for single-precision IEEE-754 math, an 8 KB instruction cache plus Flash read accelerator, multi-layer bus matrix, multi-channel peripheral DMA, and a full-speed USB 2.0 device with on-chip PHY. Peripherals include up to five USARTs, two UARTs, two TWIs, two SPIs, an I²S, a 12-bit 1 Msps ADC, a 12-bit DAC, and a 16-bit timer/counter block. The 64-LQFP package is pin-to-pin compatible with SAM7S, SAM3N, and SAM3S families, easing migration across the Microchip portfolio. The SAM4S architecture is built around an advanced high-performance bus (AHB) matrix that connects the Cortex-M4 core, SRAM, Flash and peripherals through parallel paths to deliver the 120 MHz throughput with deterministic access. An integrated SleepWalking peripheral event controller, low-power RTC, and backup domain enable deep-sleep states below 1 uA in Wait mode and below 1 uA in Backup mode. Typical applications include industrial control and HMI panels, USB-equipped smart sensors and barcode scanners, motor control, smart energy metering, and Point-of-Sale terminals where deterministic real-time response and on-chip analog integration reduce BOM cost. For portable or battery-powered designs, the low-power Run and Wait modes (when available) extend runtime without sacrificing processing headroom. When designing with the ATSAM4S8BA-AN, verify VDDIO decoupling with 100 nF X7R ceramics placed within 3 mm of each supply pin, and ensure the 12 MHz external crystal or 32.768 kHz low-frequency crystal is laid out per the SAM4S hardware design guidelines to meet USB jitter requirements. The pin-to-pin compatibility with SAM7S/SAM3N/SAM3S allows direct footprint reuse when migrating code from older Atmel parts. This page synthesizes distributor pricing, drop-in compatible SAM4S8 family variants, cross-family SAM3N/SAM3S migration options, and practical hardware design notes not found in the manufacturer datasheet.

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ATSAM4S8BA-ANR - ARM Cortex-M4 120MHz 512KB MCU | Microchip
ATSAM4S8BA-ANR

ATSAM4S8BA-ANR - ARM Cortex-M4 120MHz 512KB MCU | Microchip

The Microchip Technology ATSAM4S8BA-ANR is an ARM Cortex-M4 32-bit microcontroller from the SAM4S family, delivering 120 MHz CPU performance with 512 KB of Flash and 128 KB of SRAM in a 64-pin LQFP (10x10 mm) package. It operates from a 1.62 V to 3.6 V supply and is supplied in tape-and-reel packaging (TR) for high-volume SMT production lines. An ARM Cortex-M microcontroller is a 32-bit RISC processor core designed for embedded applications that require deterministic real-time response, low power, and rich peripheral integration. The Cortex-M4 variant adds a single-precision FPU and DSP extensions, sitting between the smaller Cortex-M0/M0+ and the higher-end Cortex-M7 in the ARM v7-M architecture hierarchy. Microcontrollers in this class integrate the CPU core, on-chip non-volatile memory, SRAM, and a wide peripheral set into a single package, replacing many discrete components in industrial, consumer, and IoT designs. Key features of the ATSAM4S8BA-ANR include a Cortex-M4 core with FPU and DSP instructions, 512 KB Flash, 128 KB SRAM, and an enhanced Peripheral Touch Controller supporting capacitive touch interfaces. It provides a wide range of connectivity peripherals including USB 2.0 Full-Speed, up to two CAN controllers, multiple USART/SPI/TWI interfaces, an 8-channel 10-bit ADC, and a 16-bit PWM timer. The device targets industrial and consumer applications that demand deterministic real-time performance with low power consumption. At the architectural level the SAM4S uses an advanced 90 nm process and integrates a high-bandwidth multi-layer AHB/APB bus matrix. The Cortex-M4 core implements Thumb-2 instruction set with hardware single-cycle MAC and saturating arithmetic, enabling DSP workloads such as audio processing, motor control loops, and sensor fusion without external DSP chips. Up to 8 DMA channels offload data movement between peripherals and memory, further freeing CPU bandwidth. Typical applications for the ATSAM4S8BA-ANR include industrial control and HMI panels, USB peripherals, motor control for BLDC and stepper drives, smart metering, sensor hubs, and home automation gateways. Designers value the part for its deterministic interrupt latency, mature Atmel/Microchip software ecosystem (ASF, Harmony 3), and pin-compatibility with SAM4N, SAM3S, SAM3N and SAM7S legacy 64-pin devices for easy migration. Design consideration: ensure decoupling capacitors (100 nF ceramic plus 4.7 uF bulk) are placed within 5 mm of the VDDCORE and VDDIO pins, and that the NRST line is pulled up correctly to guarantee clean Cortex-M4 startup. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4S8BA-AU - ARM Cortex-M4 120MHz 512KB MCU | Microchip
ATSAM4S8BA-AU

ATSAM4S8BA-AU - ARM Cortex-M4 120MHz 512KB MCU | Microchip

The Microchip ATSAM4S8BA-AU is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, integrating 512 KB of Flash and 128 KB of SRAM in a 64-pin LQFP (10x10 mm) package. It belongs to the SAM4S family, which combines a high-performance Cortex-M4 core with DSP extensions, a Memory Protection Unit (MPU), and a 2 KB instruction cache to sustain deterministic real-time response. The device also includes a full-speed USB 2.0 device port with on-chip transceiver, a 12-bit ADC, up to two UARTs, two TWI (I2C-compatible) modules, SPI, I2S, SDIO/SD/MMC, and a 16-bit PWM timer block. An ARM Cortex-M4 microcontroller is a 32-bit processor core from ARM's Cortex-M family optimized for embedded deterministic control. It combines the Thumb-2 instruction set with single-cycle multiply-accumulate and optional DSP extensions, allowing efficient signal-processing workloads alongside classical MCU tasks. Microcontrollers sit hierarchically below microprocessors in the broader semiconductor taxonomy: MCU -> embedded processor -> integrated circuit -> semiconductor. The SAM4S family specifically targets industrial and consumer applications that need low power, USB connectivity, and a Cortex-M class core with strong code-density. Key features of the ATSAM4S8BA-AU include pin-to-pin compatibility with Microchip SAM3N, SAM3S and SAM7S legacy devices, enabling straightforward migration of existing 64-pin and 100-pin designs. The integrated voltage regulator supports a single 1.62V to 3.6V supply, and the part includes a low-power RTC, a fast 12-bit 1 Msps ADC, and hardware crypto accelerators on certain family members. The Cortex-M4 core delivers 1.25 DMIPS/MHz with DSP instructions for audio and motor-control algorithms. Typical applications include industrial control panels, USB-connected consumer devices, smart-metering endpoints, HMI touch controllers, motor-control BLDC/PMSM drives, and portable medical instruments. The wide peripheral mix also suits connected sensor hubs and home-automation gateways. When designing with this part, ensure the 64-pin LQFP thermal pad is properly soldered to a copper pour to keep junction temperature within the -40C to +85C industrial range. Decoupling must include a 100 nF capacitor on each VDD pin plus a bulk 4.7 uF capacitor near the voltage regulator output.

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ATSAM4S8BA-AUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4S8BA-AUR

ATSAM4S8BA-AUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4S8BA-AUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 512 KB of embedded Flash and 128 KB of SRAM, housed in a 64-pin LQFP (10x10 mm) package supplied on tape and reel. The device integrates a high-performance Cortex-M4 core with single-precision FPU, a Multi-purpose Communication Controller (USART, UART, SPI, TWI, I2S), an 11-channel 12-bit ADC, a 2-channel 12-bit DAC, USB 2.0 Full-Speed with on-chip transceiver, and a 16-bit external bus interface. The 1.62 V to 3.6 V supply range supports battery-powered and industrial 3.3 V designs, while power consumption is rated at 200 uA/MHz active, enabling low-power embedded applications. A microcontroller (MCU) is an integrated circuit that combines a processor core, program memory (Flash), working memory (SRAM), and a rich set of peripherals on a single silicon die. ARM Cortex-M4 cores are a de facto industry standard for 32-bit embedded designs because they balance deterministic interrupt response, DSP extensions, and an optional single-precision Floating Point Unit (FPU) with low energy per MHz. The SAM4S family sits in Microchip's Atmel-origin ARM lineup, which traces through Cortex-M3 predecessors into the current SAME/SAMD/SAMV71 lineages. Within the broader taxonomy, the ATSAM4S8B is a microcontroller -> embedded processor -> integrated circuit -> semiconductor. Key differentiating features include: 512 KB Flash supporting in-application programming (IAP) via a dedicated ROM bootloader, 128 KB SRAM with single-cycle access at 120 MHz, a 12-bit ADC at up to 1 Msps with hardware triggering, and an integrated high-speed USB 2.0 Full-Speed PHY that eliminates external transceiver cost. The 64-LQFP package provides ample GPIO for human-machine interface and motor-control subsystems without requiring a BGA fan-out. The architecture is built around an AHB/APB multi-layer bus matrix that allows simultaneous DMA-driven peripheral activity while the CPU executes application code. The Cortex-M4 core includes a Memory Protection Unit (MPU) for robust RTOS deployment and a Nested Vectored Interrupt Controller (NVIC) with deterministic interrupt latency, making the part suitable for hard-real-time industrial protocols. Typical applications include industrial control PLCs, USB-connected human-interface devices, home appliance controllers, smart energy metering, low-end motor drives (FOC for small BLDC fans/pumps), and medical point-of-care instruments. Designers appreciate the SAM4S family for its mature Atmel Studio / Microchip Studio toolchain, ASF (Atmel Software Framework) drivers, and the SAM-BA bootloader. When designing with this device, ensure the 1.62 V minimum supply is observed for full 120 MHz operation; at lower VDD the maximum clock is derated. Decouple VDD and VDDCORE with 100 nF X7R ceramic capacitors placed within 3 mm of each pin pair, and route the USB DP/DM pair as a 90-ohm differential with matched length. This page synthesizes distributor pricing, drop-in SAM4S pin-compatible alternatives, and practical design notes not found in the standalone manufacturer datasheet.

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ATSAM4S8BA-MU - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip
ATSAM4S8BA-MU

ATSAM4S8BA-MU - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip

The Microchip Technology ATSAM4S8BA-MU is an ARM Cortex-M4 based 32-bit Flash microcontroller running at up to 120 MHz, with 512 KB of Flash and 128 KB of SRAM, housed in a 64-pin QFN (9x9 mm) industrial-temperature package. The device integrates a 2 KB instruction cache, a Memory Protection Unit (MPU), DSP instruction extensions, and the Thumb-2 instruction set, while operating from a 1.62 V to 3.6 V supply and consuming approximately 200 uA/MHz. What is a Cortex-M4 microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripherals. The Cortex-M4 is an ARM processor core that adds DSP instructions and a single-precision floating-point unit (FPU), making it suitable for signal-processing tasks while maintaining the low-power and deterministic interrupt behaviour of the Cortex-M family. Within the broader taxonomy, the ATSAM4S8BA-MU belongs to the SAM4S series, which sits in Microchip's SMART ARM-based Flash MCU family, bridging industrial control and connected-embedded applications. Key features of the ATSAM4S8BA-MU include up to 120 MHz core speed with DSP extensions, 512 KB Flash, 128 KB SRAM, an MPU for OS-level memory isolation, and pin-to-pin compatibility with SAM3N, SAM3S, and SAM7S legacy devices in the 64-pin and 100-pin variants. The device supports up to 47 I/O lines, multiple communication peripherals (USART, SPI, TWI, USB 2.0 Full-Speed), and analog blocks including a 12-bit ADC and a 12-bit DAC. From an architectural perspective, the SAM4S uses a Harvard bus architecture with separate instruction and data paths, enabling zero-wait-state Flash execution up to 120 MHz when configured with the on-chip cache. The integrated voltage regulator with on-chip decoupling reduces external BOM, while the brown-out detector and watchdog timer improve field reliability in industrial environments. Typical applications include industrial control panels, smart metering, point-of-sale terminals, consumer white goods, USB peripherals, and motor-control subsystems. The combination of Cortex-M4 DSP performance, generous SRAM, and a wide operating voltage range also suits low-power connected sensor hubs. According to Microchip, the SAM4S family is designed for scalable performance and memory density with low active and standby power. When designing with this MCU, ensure that decoupling capacitors are placed close to the VDDCORE and VDDIO pins, and that the NRST reset circuit meets the minimum pulse-width specification. Developers using Atmel Studio 7 / Microchip Studio and the ASF / Harmony framework will benefit from existing peripheral drivers for the SAM4S platform. This page synthesises distributor pricing, drop-in alternatives, pin-compatibility notes, and practical design guidance not found in the standalone manufacturer datasheet.

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ATSAM4S8BA-MUR - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip (Tape & Reel)
ATSAM4S8BA-MUR

ATSAM4S8BA-MUR - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip (Tape & Reel)

The Microchip Technology ATSAM4S8BA-MUR is an ARM Cortex-M4 based 32-bit Flash microcontroller running at up to 120 MHz, with 512 KB of Flash and 128 KB of SRAM, housed in a 64-pin QFN (9x9 mm) industrial-temperature package. The device integrates a 2 KB instruction cache, a Memory Protection Unit (MPU), DSP instruction extensions, and the Thumb-2 instruction set, while operating from a 1.62 V to 3.6 V supply and consuming approximately 200 uA/MHz. What is a Cortex-M4 microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripherals. The Cortex-M4 is an ARM processor core that adds DSP instructions and a single-precision floating-point unit (FPU), making it suitable for signal-processing tasks while maintaining the low-power and deterministic interrupt behaviour of the Cortex-M family. Within the broader taxonomy, the ATSAM4S8BA-MUR belongs to the SAM4S series, which sits in Microchip's SMART ARM-based Flash MCU family, bridging industrial control and connected-embedded applications. Key features of the ATSAM4S8BA-MUR include up to 120 MHz core speed with DSP extensions, 512 KB Flash, 128 KB SRAM, an MPU for OS-level memory isolation, and pin-to-pin compatibility with SAM3N, SAM3S, and SAM7S legacy devices in the 64-pin and 100-pin variants. The device supports up to 47 I/O lines, multiple communication peripherals (USART, SPI, TWI, USB 2.0 Full-Speed), and analog blocks including a 12-bit ADC and a 12-bit DAC. From an architectural perspective, the SAM4S uses a Harvard bus architecture with separate instruction and data paths, enabling zero-wait-state Flash execution up to 120 MHz when configured with the on-chip cache. The integrated voltage regulator with on-chip decoupling reduces external BOM, while the brown-out detector and watchdog timer improve field reliability in industrial environments. Typical applications include industrial control panels, smart metering, point-of-sale terminals, consumer white goods, USB peripherals, and motor-control subsystems. The combination of Cortex-M4 DSP performance, generous SRAM, and a wide operating voltage range also suits low-power connected sensor hubs. According to Microchip, the SAM4S family is designed for scalable performance and memory density with low active and standby power. When designing with this MCU, ensure that decoupling capacitors are placed close to the VDDCORE and VDDIO pins, and that the NRST reset circuit meets the minimum pulse-width specification. Developers using Atmel Studio 7 / Microchip Studio and the ASF / Harmony framework will benefit from existing peripheral drivers for the SAM4S platform. This page synthesises distributor pricing, drop-in alternatives, pin-compatibility notes, and practical design guidance not found in the standalone manufacturer datasheet.

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ATSAM4S8BB-AN - 120MHz Cortex-M4 MCU | Microchip
ATSAM4S8BB-AN

ATSAM4S8BB-AN - 120MHz Cortex-M4 MCU | Microchip

The Microchip Technology ATSAM4S8BB-AN is a 32-bit ARM Cortex-M4 microcontroller rated for operation up to 120 MHz, with 512 KB of Flash memory, 128 KB of SRAM, and a 64-LQFP 10 mm x 10 mm package. The device operates from a 1.62 V to 3.6 V supply and combines a high-performance processor core with embedded data storage and communication peripherals. A microcontroller is a programmable semiconductor that integrates a CPU core, memory, peripherals, and interface logic into one device. In the product hierarchy, this part is an ARM Cortex-M4 MCU, a 32-bit RISC microcontroller, a semiconductor, and a programmable embedded-control component. Its combination of Flash program memory, SRAM working memory, and high operating frequency supports both control tasks and data-intensive embedded applications without a separate external memory interface. The verified product information identifies a maximum clock frequency of 120 MHz, 512 KB Flash, 128 KB SRAM, a 1.62 V to 3.6 V operating supply, and 200 uA/MHz power consumption. The ATSAM4S8BB-AN is packaged in a green, extended-temperature 64-LQFP. Its 32-bit architecture provides substantially more arithmetic and addressing capability than an 8-bit MCU, while the integrated 512 KB Flash supports larger embedded programs and 128 KB SRAM provides working space for protocol handling, buffers, and control logic. Typical applications include USB-connected embedded controllers, industrial equipment, communication modules, data acquisition systems, and compact control platforms. The 120 MHz operating speed allows the Cortex-M4 core to process multiple interrupts, peripheral transfers, and control loops efficiently. The device is suitable when firmware requires more memory and processing capability than a basic 8-bit or low-cost 16-bit microcontroller, provided the board design follows the electrical and pin requirements specified by the manufacturer. The primary design consideration is supply integrity. The operating range begins at 1.62 V and extends to 3.6 V, so the power rail, decoupling capacitors, reset circuitry, clock configuration, and I/O voltage limits must be checked against the manufacturer documentation. Because exact peripheral, pin, and electrical details are not supplied in the verified excerpts, do not infer those values from the family description. This product data combines the verified Microchip family specifications with distributor sourcing information and distinguishes verified facts from fields requiring datasheet confirmation. It is intended for engineers evaluating the ATSAM4S8BB-AN for embedded industrial, communication, and USB-related designs.

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ATSAM4S8BB-MN - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip (Tape & Reel)
ATSAM4S8BB-MN

ATSAM4S8BB-MN - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip (Tape & Reel)

The Microchip ATSAM4S8BB-MN is a 32-bit ARM Cortex-M4 microcontroller running up to 120 MHz with 512 KB of embedded Flash and 128 KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with extended 105 °C temperature rating. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers -> embedded ICs -> integrated circuits. ARM Cortex-M4 cores specifically add single-precision floating-point and DSP instructions, making them suitable for signal-processing tasks that would otherwise require a separate DSP chip. The SAM4S8 differentiates itself with single-cycle hardware multiplier, Memory Protection Unit (MPU), embedded Flash with Error Correction Code (ECC), security bit, and lock bits for firmware protection. The device operates from 1.62 V to 3.6 V and delivers active power consumption of 200 µA/MHz, allowing battery-powered and energy-conscious designs. Integrated peripherals include a high-speed USB 2.0 Full-Speed device, multiple USART/UART, SPI, TWI (I²C-compatible), I²S, an 8-channel 10-bit ADC, a 16-bit PWM timer counter block, and a Real-Time Clock with calendar mode. Architecturally, the SAM4S8 leverages a 3-stage pipeline with branch speculation and Thumb-2 instruction set, achieving 1.25 DMIPS/MHz. The Cortex-M4 single-precision FPU and DSP extensions accelerate FIR/IIR filters, FFTs, and PID loops without burdening the main CPU, which is valuable in motor control, audio, and sensor-fusion applications. Typical applications include industrial control and HMI panels, smart energy metering, USB-connected peripherals, point-of-sale terminals, motor-control BLDC/PMSM drives, building automation gateways, and consumer audio devices. The 105 °C junction rating also supports outdoor and harsh-environment deployments. When designing with the SAM4S8, pay attention to decoupling (100 nF + 4.7 µF near each VDD pin), JTAG/SWD trace length, and exposed-pad soldering for thermal dissipation. Use Microchip's Atmel Studio/Microchip Studio and ASF drivers to accelerate peripheral bring-up. This page synthesizes distributor pricing, drop-in compatible SAM4S-family alternatives, and practical design notes not bundled in the manufacturer datasheet.

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ATSAM4S8BB-MNR - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip
ATSAM4S8BB-MNR

ATSAM4S8BB-MNR - 120MHz Cortex-M4 MCU 512KB Flash 64-QFN | Microchip

The Microchip ATSAM4S8BB-MNR is a 32-bit ARM Cortex-M4 microcontroller running up to 120 MHz with 512 KB of embedded Flash and 128 KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with extended 105 °C temperature rating. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. Within the broader semiconductor taxonomy, an MCU sits under microcontrollers -> embedded ICs -> integrated circuits. ARM Cortex-M4 cores specifically add single-precision floating-point and DSP instructions, making them suitable for signal-processing tasks that would otherwise require a separate DSP chip. The SAM4S8 differentiates itself with single-cycle hardware multiplier, Memory Protection Unit (MPU), embedded Flash with Error Correction Code (ECC), security bit, and lock bits for firmware protection. The device operates from 1.62 V to 3.6 V and delivers active power consumption of 200 µA/MHz, allowing battery-powered and energy-conscious designs. Integrated peripherals include a high-speed USB 2.0 Full-Speed device, multiple USART/UART, SPI, TWI (I²C-compatible), I²S, an 8-channel 10-bit ADC, a 16-bit PWM timer counter block, and a Real-Time Clock with calendar mode. Architecturally, the SAM4S8 leverages a 3-stage pipeline with branch speculation and Thumb-2 instruction set, achieving 1.25 DMIPS/MHz. The Cortex-M4 single-precision FPU and DSP extensions accelerate FIR/IIR filters, FFTs, and PID loops without burdening the main CPU, which is valuable in motor control, audio, and sensor-fusion applications. Typical applications include industrial control and HMI panels, smart energy metering, USB-connected peripherals, point-of-sale terminals, motor-control BLDC/PMSM drives, building automation gateways, and consumer audio devices. The 105 °C junction rating also supports outdoor and harsh-environment deployments. When designing with the SAM4S8, pay attention to decoupling (100 nF + 4.7 µF near each VDD pin), JTAG/SWD trace length, and exposed-pad soldering for thermal dissipation. Use Microchip's Atmel Studio/Microchip Studio and ASF drivers to accelerate peripheral bring-up. This page synthesizes distributor pricing, drop-in compatible SAM4S-family alternatives, and practical design notes not bundled in the manufacturer datasheet.

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ATSAM4S8BB-UUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4S8BB-UUR

ATSAM4S8BB-UUR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip ATSAM4S8BB-UUR is a 32-bit ARM Cortex-M4 microcontroller operating at up to 120 MHz, featuring 512 KB of Flash, 128 KB of SRAM, and housed in a 64-ball WLCSP (4.42 x 3.42 mm) package. It belongs to the SAM4S8 sub-family of the Atmel SMART SAM4S series, designed for high-performance embedded applications requiring low active power consumption of approximately 200 uA/MHz. A Cortex-M4 microcontroller is a 32-bit RISC processor core designed by ARM Holdings, featuring a single-precision floating-point unit (FPU), a Memory Protection Unit (MPU), and a comprehensive interrupt controller (NVIC). The Cortex-M4 sits within a broader taxonomy: ARM Cortex-M -> 32-bit MCU -> embedded microcontroller -> integrated circuit. The SAM4S family specifically targets consumer, industrial control, and PC peripheral applications where deterministic real-time response, integrated connectivity, and code density are essential. Key features of the ATSAM4S8BB-UUR include a 1.62 V to 3.6 V supply range, full-speed USB 2.0 Device port with embedded transceiver, up to 16-channel 1 Msps ADC, multiple serial peripherals (USART, SPI, TWI), and a high-speed peripheral bus. The device integrates a flexible clocking system with an internal 8 MHz RC oscillator and PLL, and supports low-power sleep modes down to single-digit microampere current. The WLCSP-64 footprint (4.42 x 3.42 mm) makes it suitable for space-constrained designs such as wearables, IoT edge nodes, and portable instrumentation. The SAM4S8 architecture implements the Cortex-M4 with Thumb-2 instruction set, optional DSP extensions, and a hardware FPU for floating-point math acceleration. Internal SRAM is organized as 128 KB on the system bus for code/data and an additional 16 KB for fast interrupt-driven tasks. Flash memory is dual-bank capable, enabling in-application programming (IAP) and live firmware updates without external bootloader support. Typical applications include industrial sensor hubs, USB-connected PC peripherals, smart metering, fitness wearables, and motor control front-ends. The device is also a strong fit for HMI panels and battery-powered data loggers where the low-power sleep modes and integrated USB simplify BOM and PCB area. When designing with this device, allocate the WLCSP's fine-pitch balls to a 4-layer PCB with microvia fan-out, since 0.4 mm ball pitch is below standard 6-mil via capability. Plan decoupling per the manufacturer's reference schematic, and reserve one full USB DP/DN pair with 90-ohm differential impedance for the integrated USB Device port. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers a single reference for sourcing, comparison, and integration planning of the ATSAM4S8BB-UUR.

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ATSAM4S8CA-AN - 512KB Flash Cortex-M4 MCU 100-LQFP | Microchip
ATSAM4S8CA-AN

ATSAM4S8CA-AN - 512KB Flash Cortex-M4 MCU 100-LQFP | Microchip

The Microchip Technology ATSAM4S8CA-AN is a 32-bit ARM Cortex-M4 RISC microcontroller operating at up to 120 MHz, equipped with 512 KB of Flash and housed in a 100-pin LQFP (14x14 mm) package. It integrates high-speed peripherals including a USB 2.0 Full-Speed device port, up to 8-channel 10-bit ADC, 16-bit timers, and a flexible Serial Communication Controller (USART, SPI, TWI/I2C). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable I/O peripherals. The Cortex-M4 core adds a single-precision FPU and optional SIMD instructions, placing it in the hierarchy: Cortex-M4 -> ARM Cortex-M -> ARM 32-bit RISC processor -> embedded MCU. The SAM4S family targets industrial and consumer applications requiring deterministic real-time control, low-power sleep modes, and rich connectivity. Key features of the ATSAM4S8CA-AN include 120 MHz core clock with single-cycle hardware multiply, 128 KB SRAM, an External Bus Interface (EBI) for SRAM/NOR/NAND expansion, a 12 Mbps USB FS device, and a True Random Number Generator (TRNG). The peripheral event system allows peripherals to trigger one another autonomously, reducing CPU overhead and enabling deterministic response times. Architecturally, the device uses a multi-layer bus matrix that grants simultaneous DMA and CPU data transfers, plus an integrated high-speed Flash with prefetch buffer. The Cortex-M4 DSP extensions and MPU (Memory Protection Unit) support deterministic interrupt latency for safety-sensitive code. Operating voltage is 1.62 to 3.6 V. Typical applications include industrial control (PLC modules, motor drives), USB peripherals (HID devices, virtual COM ports), consumer electronics (home appliances, smart sensors), graphical user interfaces with TFT LCDs, secure connectivity gateways, and low-power IoT edge nodes. Designers choose it for the combination of Cortex-M4 DSP performance, ample Flash, and the SAM4S family's mature peripheral library (ASF). When designing with this MCU, plan Flash bank-locking for field firmware updates and ensure the EBI lines are impedance-controlled if an external memory bus is used. Decoupling must follow the datasheet 4-layer reference board to keep the 120 MHz core within jitter limits. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that are not collected in any single manufacturer or distributor source.

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ATSAM4S8CA-ANR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4S8CA-ANR

ATSAM4S8CA-ANR - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4S8CA-ANR is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, delivering up to 120 MHz CPU clock speed with 512 KB of embedded Flash and 128 KB of SRAM in a 100-pin LQFP (14x14 mm) package. It integrates a rich peripheral set including USB 2.0 Full-Speed, CAN, up to 6 UART/USART, 3 SPI, 3 I2C, 12-bit ADC, and 12-bit DAC, making it a high-integration MCU for connected industrial and consumer devices. What is a Cortex-M4 microcontroller? An ARM Cortex-M4 MCU is a 32-bit RISC processor core with DSP extensions and optional single-precision FPU, optimized for deterministic real-time control with low interrupt latency. Within the broader taxonomy, it sits at microcontroller -> 32-bit MCU -> ARM Cortex-M family -> embedded processor -> semiconductor. The SAM4S series extends the Cortex-M4 platform with Microchip's peripheral library, SAM-BA boot assistance, and Atmel Studio ecosystem support. Key features of the ATSAM4S8CA-ANR include a 1.62V-3.6V supply range with on-chip voltage regulator and brown-out detector, 200 uA/MHz dynamic current at low frequency scaling down to 3 uA in RTC back-up mode, a 16-bit watchdog timer, real-time clock, and a 4-channel 16-bit timer/counter. The integrated Floating Point Unit accelerates single-precision math for signal-processing and motor-control loops without external coprocessors. Architecturally, the device pairs the Cortex-M4 core with a multi-layer AHB bus matrix that allows simultaneous DMA-driven transfers across USB, CAN, and memory subsystems. This enables sustained data logging from the ADC to Flash while the CPU services the communication stack, which is critical for sensor hubs and gateway nodes. Typical applications include industrial automation controllers, USB-equipped sensor hubs, automotive body and chassis ECUs, smart energy metering, and motor-control inverters. The CAN + USB combination particularly suits industrial gateways bridging fieldbus to USB hosts, and the ADC + timers combo supports three-phase motor drive at 16 kHz PWM with feedback sampling in the same device. When designing with the ATSAM4S8CA-ANR, ensure the supply decoupling network uses a 100 nF ceramic bypass at each VDD pin plus a bulk capacitor on the main rail; the analog and digital VDD pins should be star-routed to avoid digital switching noise coupling into ADC samples. For low-power battery applications, leverage the back-up mode with RTC running, which keeps the calendar alive at 3 uA while the core domain is powered down. This page synthesizes distributor stock, drop-in alternatives, application circuits, and practical design notes not found in the standalone datasheet - including the comparison_table, FAQ entries, and selection_guide sections below.

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ATSAM4S8CA-AU - ARM Cortex-M4 120MHz 512KB Flash MCU | Microchip
ATSAM4S8CA-AU

ATSAM4S8CA-AU - ARM Cortex-M4 120MHz 512KB Flash MCU | Microchip

The Microchip ATSAM4S8CA-AU is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 512 KB of Flash and 128 KB of SRAM in a 100-pin LQFP (14x14 mm) package. The device features a 2 KB instruction cache, a Memory Protection Unit (MPU), DSP instruction extensions and the Thumb-2 instruction set, combining deterministic real-time control with strong DSP throughput for embedded designs. The Cortex-M4 core delivers 1.25 DMIPS/MHz (Dhrystone 2.1) and supports single-cycle MAC plus single-precision floating-point hardware for signal-processing workloads. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM) and a broad set of peripherals such as timers, communication controllers and analog blocks. Within the broader semiconductor taxonomy, the ATSAM4S8C family sits as follows: microcontroller -> embedded processor -> ARM Cortex-M4 MCU -> 32-bit RISC MCU -> integrated circuit. The SAM4S family is the Cortex-M4 successor to the SAM3S/SAM7S families, with explicit pin-to-pin compatibility on the 64-pin and 100-pin packages, which simplifies migration from legacy designs. Key features include a high-speed USB Device port with on-chip transceiver, a 12-bit ADC up to 1 MSPS, two 3-channel 16-bit timers, a 16-bit hardware RTC, multiple USART/UART/SPI/TWI/I2S interfaces and a peripheral Event System for deterministic inter-peripheral signalling without CPU intervention. The device operates from 1.62 V to 3.6 V and includes a low-power Real-Time Clock running at 3 uA from a 1.8 V back-up supply. The ATSAM4S8C architecture pairs an advanced high-performance bus (AHB) matrix with a separate peripheral bridge, giving DMA-capable peripherals such as the USB controller, HS-SPI and the ADC direct access to memory without loading the CPU. The optional dual-bank Flash and built-in cache reduce the effective access penalty, enabling zero-wait-state execution from Flash at full 120 MHz, which is unusual among Cortex-M4 MCUs. Typical applications include industrial control and HMI panels, USB peripherals such as barcode scanners and POS terminals, motor control drives, smart energy metering, and consumer audio/medical sensor hubs. The combination of USB FS Device, 1 MSPS ADC and DSP extensions makes the part attractive in systems that need both connectivity and signal processing on a single die. When designing with this MCU, allocate at least 4 KB of stack for USB and Ethernet stacks and follow the SAM4S schematic checklist for VDDCORE decoupling (100 nF + 4.7 uF close to each VDD pin) to avoid POR resets during flash programming. Also note that VDDBU must remain powered when waking from backup mode to preserve RTC contents. This page synthesizes distributor pricing, drop-in compatible SAM4S family alternatives, and practical design notes not found in the bare manufacturer datasheet.

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ATSAM4S8CA-AUR - 120MHz Cortex-M4 MCU 512KB Flash LQFP-100 | Microchip
ATSAM4S8CA-AUR

ATSAM4S8CA-AUR - 120MHz Cortex-M4 MCU 512KB Flash LQFP-100 | Microchip

The Microchip ATSAM4S8CA-AUR is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, operating up to 120 MHz with 512 KB of embedded Flash and 128 KB of SRAM in a 100-pin LQFP (14x14 mm) package supplied on tape-and-reel. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O onto one die, enabling compact embedded designs. The Cortex-M4 is an ARMv7-M core family widely used in mixed-signal industrial and IoT systems; LDOs, switching regulators, and power management ICs sit alongside MCUs in the broader semiconductor ecosystem, with the MCU itself classified as a digital integrated circuit. Within Microchip's SAM family, Cortex-M4 variants such as SAM4S, SAM4N, and SAM3S share a pin-to-pin compatible footprint, easing migration. Key features of the ATSAM4S8CA-AUR include a single-core Cortex-M4 with FPU and DSP extensions, 512 KB Flash (single-bank option) plus 128 KB SRAM, a Multi-bit ECC Flash controller, and a peripheral set that typically spans USART/UART, TWI (I2C), SPI, SSC, USB 2.0 Full-Speed device/host, CAN, a 12-bit ADC, PWM timers, and an External Bus Interface. The device operates from 1.62 V to 3.6 V and integrates an on-chip voltage regulator that simplifies single-rail designs. Architecturally the part uses an 8-layer AHB/APB matrix, a tightly-coupled SRAM block for deterministic code execution, and an enhanced Flash controller supporting read-while-write for live firmware updates. Power modes draw as little as a few microamps in back-up with RTC running, suitable for battery-aware industrial nodes. Typical applications include industrial control PLCs, building automation gateways, smart-metering, point-of-sale terminals, low-cost HMI panels, USB peripherals (HID, CDC), and CAN-connected automotive aftermarket modules. For high-end audio DSP or graphics-heavy HMI, designers usually step up to SAM4E/SAM7S with larger memory and dedicated peripherals. When designing with the ATSAM4S8CA-AUR, route the 32 kHz crystal traces symmetrically and place the four decoupling capacitors as close as possible to each supply pin pair. Use the Atmel/Microchip SAM-BA boot assistant or SWD/JTAG for programming, and always specify the boot mode strap correctly on reset to avoid lockouts. This page consolidates distributor pricing, drop-in pin-compatible alternatives, and design considerations not found in the manufacturer datasheet, helping engineers evaluate and second-source the part quickly.

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ATSAM4S8CA-CFN - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4S8CA-CFN

ATSAM4S8CA-CFN - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip Technology ATSAM4S8CA-CFN is an ARM Cortex-M4 32-bit microcontroller from the SAM4S family operating at up to 120 MHz with 512 KB of embedded Flash and 128 KB of SRAM, housed in a 100-ball 7x7 mm VFBGA package. It integrates a Floating Point Unit (FPU), a Multi-port SRAM controller with bus matrix, and a rich peripheral set including a High-Speed USB 2.0 device port with on-chip PHY, HS SDIO/MMC, two CAN controllers, multiple USART/UART/SPI/TWI interfaces, and a 12-bit ADC with up to 16 channels, making it a true system-on-chip for embedded designs. The SAM4S family is built around the Cortex-M4 processor core, an energy-efficient 32-bit core designed by ARM for microcontroller-class applications. Cortex-M4 extends the Cortex-M3 instruction set with DSP extensions and an optional single-precision Floating Point Unit. Microcontrollers based on Cortex-M4 sit within the hierarchy ARM Cortex-M -> 32-bit MCU -> embedded microcontroller -> semiconductor IC, and they target applications that need deterministic real-time control plus signal-processing throughput in a single low-cost package. Compared to Cortex-M0/M0+ parts the M4 delivers roughly an order-of-magnitude more compute for DSP loops, and compared to Cortex-M7 parts it draws significantly less active power, making it the sweet-spot choice for mixed control + signal-processing designs. Key features that distinguish the ATSAM4S8CA-CFN include its 1.62 V to 3.6 V single-supply operation, hardware cryptography acceleration supporting AES, True Random Number Generator (TRNG), Unique 128-bit device ID, and an Event System that allows peripherals to trigger each other without CPU intervention. Its 16-channel 12-bit ADC (1 MSps), two 16-bit timers, four 16-bit PWM timers, and a 24-bit timer give the device strong motor-control and power-conversion capabilities, while the integrated HS USB 2.0 device with on-chip PHY eliminates the need for an external transceiver and saves both BOM cost and PCB area. Typical applications include industrial motor control (BLDC, PMSM, stepper), Human-Machine Interfaces (HMI) with TFT displays driven by the integrated LCD controller, smart-grid and metering endpoints, building-automation controllers, USB peripherals such as data loggers and POS terminals, automotive body and infotainment subsystems, and portable medical instrumentation. The wide 1.62 V to 3.6 V supply range also enables direct operation from a single Li-ion cell with no external LDO. Design considerations: at 120 MHz the device can exceed 100 MIPS, so decoupling must be dense (one 100 nF + one 4.7 uF per VDD pin group) and the VFBGA-100 layout requires microvia-in-pad or via-in-pad technology to reach the inner balls. Programming is supported through Microchip Studio (formerly Atmel Studio) with the Atmel-ICE or SAM-ICE debug probe. This page synthesizes the manufacturer datasheet with distributor pricing, drop-in same-package alternatives, comparison data against other SAM4S members, and practical design notes that are not duplicated elsewhere.

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ATSAM4S8CA-CFU - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip
ATSAM4S8CA-CFU

ATSAM4S8CA-CFU - 120MHz Cortex-M4 MCU, 512KB Flash | Microchip

The Microchip (Atmel) ATSAM4S8CA-CFU is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, integrating 512 KB of Flash and 128 KB of SRAM in a 100-pin VFBGA (7x7 mm) package. It targets industrial-grade embedded designs requiring DSP capability, a memory protection unit (MPU), and the Thumb-2 instruction set. A microcontroller (MCU) is a single-chip computer that combines a CPU core, memory (Flash for code, SRAM for data), and a rich set of peripherals (communication, timers, ADC/DAC) into one IC. The Cortex-M4 family sits in the ARM hierarchy as a mainstream MCU core optimized for deterministic real-time control with DSP extensions; the SAM4S series extends it with Atmel/Microchip-specific peripherals and an ultra-low-power architecture. The ATSAM4S8CA-CFU occupies the higher-density end of the SAM4S line, sharing a common peripheral set across the family for software reuse. Key features include a 2 KB instruction cache, MPU for safety isolation, embedded Trace Macrocell (ETM) support, and a 2 KB ROM containing bootloader and IAP routines. The device supports 1.62 V to 3.6 V supply, has a built-in 12-bit ADC, USB 2.0 Full-Speed device, multiple UART/SPI/TWI/I2S interfaces, and a high-speed memory interface for external bus (EBI). The 100-pin VFBGA exposes the maximum peripheral count of the SAM4S family. Typical applications include industrial control, smart energy metering, motor control, building automation, point-of-sale terminals, and consumer audio devices. Pin-to-pin compatibility with SAM3N, SAM3S (64/100-pin) and SAM7S legacy devices facilitates seamless migration in long-life industrial platforms. When designing, note the VFBGA package requires careful PCB layout with microvia or laser-drilled vias for reliable assembly. Decouple VDD with 100 nF plus bulk capacitors close to each supply pin, and follow Microchip's reference design for the SAM4S-EK evaluation board. This page combines distributor pricing, drop-in alternative MPNs, and field-ready design notes not found in the manufacturer datasheet alone.

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ATSAM4S8CA-CFUR - SAM4S Cortex-M4 512KB Flash MCU | Microchip
ATSAM4S8CA-CFUR

ATSAM4S8CA-CFUR - SAM4S Cortex-M4 512KB Flash MCU | Microchip

The Microchip Technology ATSAM4S8CA-CFUR is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 512KB of embedded Flash and 128KB of SRAM, housed in a 100-ball 7x7 mm VFBGA package. It operates from a 1.62V to 3.6V supply, supports both 1.2V and 3.3V core domains, and targets industrial temperature grades of -40C to +85C. An ARM Cortex-M4 microcontroller is a high-performance 32-bit RISC processor core designed for embedded systems. The Cortex-M4 extends the Cortex-M3 with single-precision floating-point unit (FPU) instructions and DSP extensions, positioning it in the product hierarchy as follows: Cortex-M4 -> ARM Cortex-M family -> 32-bit MCU -> embedded microcontroller -> semiconductor IC. Microchip positions the SAM4S family as an ultra-low-power, performance-oriented extension of its SAM ARM portfolio, with on-chip peripherals including USB 2.0 Full-Speed, up to five USARTs, hardware crypto accelerator (AES, TRNG), and a 12-bit ADC with up to 16 channels. Key differentiating specifications of the ATSAM4S8CA-CFUR include 120 MHz maximum CPU clock, 512KB Flash program memory organized as 512K x 8, 128KB SRAM, VFBGA-100 package (7x7 mm), 1.62V-3.6V wide supply range, and an integrated FPU plus DSP extensions. The -CFUR suffix decodes as industrial temperature range (C), 100-ball VFBGA (F), tape-and-reel packaging (UR). The architecture pairs a Cortex-M4 core with Microchip's proprietary peripheral DMA (PDC), a high-speed bus matrix, and a peripheral event system for low-latency inter-module signaling. The integrated FPU accelerates floating-point math, while DSP extensions enable efficient signal-processing kernels such as FIR filters and FFTs without CPU stalls. Typical applications include industrial HMI panels, smart energy metering, USB-connected peripherals, IoT edge nodes, building automation, and motor-control front-ends. The 128KB SRAM supports real-time stacks for RTOS-based designs (FreeRTOS, Micrium), making the part well suited for connected appliances and POS terminals. A key design consideration for VFBGA-100 is PCB escape routing. With a 7x7 mm body and 0.65 mm ball pitch, designers should plan for laser-drilled microvias or via-in-pad and target matched-length signal groups for the high-speed USB DP/DM traces; XAIPART recommends the SAM4S family reference designs in the datasheet as starting points for new boards. This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical PCB-layout notes not found in the standard manufacturer datasheet, providing additional selection context for engineers comparing -CFUR variants against the wider SAM4S portfolio.

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ATSAM4S8CA-CU - ARM Cortex-M4 MCU 120MHz 512KB Flash | Microchip
ATSAM4S8CA-CU

ATSAM4S8CA-CU - ARM Cortex-M4 MCU 120MHz 512KB Flash | Microchip

The Microchip Technology (formerly Atmel) ATSAM4S8CA-CU is a 32-bit ARM Cortex-M4 microcontroller running up to 120 MHz with 512 KB of Flash and 128 KB of SRAM, housed in a 100-pin TFBGA (9x9 mm) package. It integrates a 2 KB instruction cache, Memory Protection Unit (MPU), DSP instruction extensions, and the Thumb-2 instruction set, delivering Cortex-M4 class DSP and deterministic real-time performance in a single chip. The industrial temperature grade (-40C to +85C) and 1.62 V to 3.6 V supply range target embedded designs that demand robust operation across wide Vcc rails. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals (timers, ADC, communication controllers, GPIO) on a single die. The ARM Cortex-M4 is a 32-bit RISC core designed for embedded deterministic processing with DSP extensions and a single-cycle hardware multiplier. MCUs sit at the bottom of the compute hierarchy alongside microprocessors, FPGAs, and DSPs, but unlike an MPU the MCU boots and runs Flash-resident firmware without external memory in most configurations. Key features of the ATSAM4S8CA-CU include a maximum clock of 120 MHz, 512 KB Flash organised as 512K x 8, 128 KB SRAM, a 16-bit External Bus Interface (EBI) supporting SDRAM and SRAM, USB 2.0 Full-Speed with on-chip transceiver, CAN 2.0A/B controller, multiple USART/UART/SPI/TWI channels, a 12-bit ADC, and a 32-bit hardware floating-point unit when DSP instructions are enabled. Power consumption is specified at 200 uA/MHz in dynamic mode at low frequency, around 30 mA at 100 MHz active, and 3 uA in back-up mode with RTC running at 1.8 V. Typical applications include industrial control panels, smart metering, point-of-sale terminals, motor control, USB peripherals, CAN-connected sensors, and home appliances. The SAM4S family is pin-to-pin compatible with SAM3S, SAM4N, SAM3N, and SAM7S devices (64- and 100-pin versions), giving designers an upgrade path within the Atmel/Microchip ARM portfolio without re-laying the PCB. Compared with SAM3S parts (which use Cortex-M3), the SAM4S gains the Cortex-M4 DSP extensions and FPU, useful for sensor-fusion and audio processing. When laying out a board for the 100-pin TFBGA, allocate a 4-layer PCB with a continuous ground plane below the BGA and at least 4 vias in the central thermal/exposed pad to limit the junction temperature at high active current. Provide a 1 uF + 100 nF decoupling pair within 2 mm of every VDD/VSS pin pair, and route the 12 MHz external crystal traces symmetrically with a guard ring to ground to avoid Hibernation-mode crystal-startup failures. This page synthesizes distributor pricing from DigiKey and Mouser, Microchip's official SAM4S datasheet (document 60001419B family), drop-in alternative MPNs sharing the same 100-pin TFBGA footprint, and PCB-level design notes that complement but do not replace the manufacturer datasheet.

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