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ATSAM4SA16CA-CU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4SA16CA-CU

ATSAM4SA16CA-CU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4SA16CA-CU is an ARM Cortex-M4 32-bit RISC microcontroller running up to 120 MHz, integrating 1 MB of Flash and 160 KB of SRAM in a 100-pin TFBGA (9x9 mm) package. It ships with a 2 KB instruction cache, Memory Protection Unit (MPU), single-precision DSP instructions, and a Thumb-2 instruction set. The industrial-grade (-40C to +85C) variant targets deterministic real-time control with hardware trace, floating-point and high-throughput peripheral connectivity. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (typically Flash), working memory (SRAM), and peripherals such as timers, ADC/DAC, communication controllers, and GPIO. MCUs belong to the embedded systems hierarchy: MCU -> microcontroller -> embedded processor -> semiconductor IC. Cortex-M class MCUs are designed for deterministic interrupt-driven firmware, deterministic interrupt latency, and ultra-low power operation, and they dominate consumer, industrial, and IoT applications due to their energy efficiency and broad toolchain support. Key features of the ATSAM4SA16CA-CU include the high-performance 120 MHz Cortex-M4 core with DSP extensions, 1 MB on-chip Flash for code and data, 160 KB SRAM, 79 general-purpose I/O lines, and a multilayer bus matrix with multi-channel DMA for high data-rate communication. The peripheral set comprises USB 2.0 Full-Speed, up to four UART/USART, three TWI (I2C), two SPI, one HS-SPI, an EMAC 10/100 Ethernet MAC, PWM, 12-bit ADC, 12-bit DAC, and external bus interface supporting 8-bit data with 24-bit address bus width. The SAM4S architecture leverages a multi-layer AHB/APB bus matrix that allows simultaneous master access from the CPU, DMA controller, and peripherals, eliminating contention. The peripheral DMA controller (PDC) and dedicated DMA channels feed high-bandwidth interfaces such as Ethernet and HS-SPI without CPU intervention, enabling deterministic real-time response in motor control and communication gateway designs. Typical applications include industrial automation controllers, building automation gateways, smart energy metering, POS terminals, USB peripherals, motor control (BLDC/PMSM), and embedded connectivity nodes. Pin-to-pin compatibility with SAM3N, SAM3S (64- and 100-pin), and SAM7S legacy products enables smooth upward migration without PCB rework. When designing with the ATSAM4SA16CA-CU, verify that the 100-pin TFBGA PCB layout uses microvia-compatible stack-up, since the 0.8 mm ball pitch requires advanced assembly processes. Plan decoupling with 100 nF per power pin cluster and a 4.7 uF bulk capacitor per supply rail to suppress switching transients. This page synthesizes distributor pricing, pin-to-pin compatible drop-in alternatives, and PCB design guidance not consolidated in the manufacturer datasheet.

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ATSAM4SA16CB-AN - 120MHz Cortex-M4 MCU, 1MB Flash, 100-LQFP
ATSAM4SA16CB-AN

ATSAM4SA16CB-AN - 120MHz Cortex-M4 MCU, 1MB Flash, 100-LQFP

The Microchip Technology ATSAM4SA16CB-AN is an ARM Cortex-M4 32-bit microcontroller built on the SAM4S platform, running at up to 120 MHz with 1 MB of embedded Flash and 152 KB of SRAM. Housed in a 100-pin LQFP package (14x14 mm, green, industrial temperature grade), the device operates from a 1.62 V to 3.6 V supply and integrates an extensive peripheral set for connectivity, system control, and analog interfacing. An ARM Cortex-M4 microcontroller is a 32-bit processor core that pairs deterministic interrupt handling with DSP extensions and a single-precision FPU, making it the workhorse of embedded designs that need real-time control plus signal-processing math. The Cortex-M4 sits within the broader ARM Cortex-M family (Cortex-M0/M0+/M3/M4/M7), which belongs to the microcontroller IC category under the integrated circuits hierarchy, and integrates memory, peripherals, and clocking into a single die for compact, low-power embedded systems. Key features include an on-chip 120 MHz Cortex-M4 core with FPU and DSP instructions, 1 MB Flash program memory, 152 KB SRAM, a 16-bit External Bus Interface, USB 2.0 Full-Speed Device, CAN, EMAC, HS USB, multiple UART/USART/SPI/TWI/I2S interfaces, 12-bit ADC, analog comparator, and RTC. The 100-LQFP (14x14) package gives designers generous I/O access while keeping the board footprint manageable. The SAM4SA16 architecture uses a multi-layer bus matrix connecting the Cortex-M4 core, Flash, SRAM, and peripherals, supporting parallel DMA and peripheral-to-peripheral transfers for high-throughput pipelines. Pin-to-pin compatibility with SAM7S, SAM3N, and SAM3S lets existing designs scale Flash/RAM upward without PCB rework. Typical applications include industrial control and HMI, factory automation, motor control, smart energy metering, medical instrumentation, USB peripherals, barcode scanners, and consumer audio. The wide peripheral mix also suits automotive body and gateway modules when used within its industrial temperature envelope. When designing with this part, prioritize decoupling (100 nF per VDD pair plus bulk) and route the 32 kHz crystal traces carefully to avoid corrupting the RTC reference. Choosing revision B is strongly recommended by Microchip for new prototypes and production runs. This page combines distributor pricing, drop-in alternatives within the SAM4S family, and practical design notes not available on a bare datasheet link.

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ATSAM4SA16CB-ANR - 1MB Flash Cortex-M4 MCU 100-LQFP | Microchip
ATSAM4SA16CB-ANR

ATSAM4SA16CB-ANR - 1MB Flash Cortex-M4 MCU 100-LQFP | Microchip

The Microchip Technology ATSAM4SA16CB-ANR is a high-performance 32-bit ARM Cortex-M4 microcontroller with FPU from the SAM4S family, integrating 1 MB of Flash and 152 KB of SRAM in a 100-pin LQFP (14x14 mm) package with an extended operating temperature range and Tape & Reel packaging. It runs at up to 120 MHz, providing 150 DMIPS / 1.25 DMIPS/MHz with single-precision hardware floating-point acceleration, and is supported by the Microchip Studio IDE plus the Atmel/Microchip Software Framework (ASF/SAM). The on-chip memory map places 1 MB Flash and SRAM on the AHB matrix, enabling deterministic core-to-peripheral access. A 32-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, and programmable peripherals. Cortex-M4 devices extend Cortex-M3 by adding DSP extensions, a single-precision FPU, and optional MAC instructions, making them suited to mixed control and signal-processing workloads. Within the broader taxonomy, this part sits at: Cortex-M4 -> ARM Cortex-M -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The SAM4S family is Microchip's mainstream Cortex-M4 line aimed at industrial automation, smart energy, building control, and human-machine interface applications. Differentiating features include 1 MB embedded Flash with secure boot, 16 KB ROM with bootloader, 152 KB SRAM, a high-speed Multi-port SRAM-USB SRAM architecture, an external bus interface (EBI) supporting SRAM, NOR Flash, NAND Flash, and PSRAM, plus 16-bit external bus on selected packages. Communication peripherals include USB 2.0 Full-Speed device/host, two CAN controllers, three USARTs, two UARTs, two TWIs (I2C), three SPIs, one SSC for audio, an I2S interface, and a 4-channel 16-bit Timer Counter plus PWM. Analog integration delivers one 12-bit ADC with up to 16 channels, one 12-bit DAC, and one analog comparator. The architecture uses a 7-layer AHB bus matrix with 16 DMA channels for concurrent peripheral transfers, a Cortex-M4 core with Embedded Trace Module (ETM) and Instruction Trace Macrocell (ITM) for real-time debug, and a Memory Protection Unit for safety-critical partitioning. Power management integrates an on-chip voltage regulator supporting 1.62 V to 3.6 V single-supply operation, ultra-low-power modes (Backup mode with RTC and <3 µA typical consumption), and a Windowed Watchdog Timer. The 100-LQFP package provides strong thermal performance for industrial -40C to +85C ambient designs. Typical applications include industrial PLCs and sensor hubs, building automation and HVAC controllers, smart meters and energy monitors, point-of-sale terminals, USB human-interface devices, CAN-based elevator and motor control front-ends, and consumer appliances with TFT/LCD graphical user interfaces. The combination of 1 MB Flash, dual CAN, USB, and 120 MHz Cortex-M4 with FPU enables consolidated single-MCU designs that previously required multiple processors. When designing with this MCU, ensure the decoupling network follows the 100-LQFP reference schematic: one 100 nF X7R 0402 per VDD pin plus a bulk 4.7 µF ceramic on the main rail, and route the 32.768 kHz crystal within 5 mm of the RTC pins with a guard ring to suppress noise coupling into the ADC. The dual CAN controllers and USB Full-Speed transceiver require careful PCB stack-up and 90 ohm differential impedance to meet IEC 61000-4-2 industrial ESD. This page consolidates distributor pricing, drop-in alternatives within the SAM4S family, and PCB-level design guidance that is not duplicated in the Microchip datasheet PDF alone.

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ATSAM4SA16CB-CFN - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip
ATSAM4SA16CB-CFN

ATSAM4SA16CB-CFN - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip

The Microchip ATSAM4SA16CB-CFN is an ARM Cortex-M4 microcontroller from the SAM4S family, delivering 120 MHz CPU performance with 1 MB of embedded Flash and 128 KB of SRAM in a 100-pin VFBGA (7x7 mm) package. It integrates a high-performance 32-bit RISC core with DSP instructions, a floating-point unit (FPU), and a rich set of peripherals including USB 2.0 Full-Speed, CAN, EMAC, HS MCI/SDIO, and multiple USART/SPI/TWI interfaces. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals onto one silicon die. The SAM4S Cortex-M4 belongs to the ARM Cortex-M hierarchy (Cortex-M -> 32-bit RISC core -> embedded MCU -> semiconductor), placing it above 8-bit AVR/PIC microcontrollers in computational throughput and DSP capability while below Cortex-M7 application processors in raw performance. Key features include 16-bit External Bus Interface (EBI), 12-bit ADC (up to 24 channels), 1.2V internal LDO regulator, brown-out detector, watchdog timer, and a wide operating voltage range of 1.62V to 3.6V. The device supports industrial temperature range (-40°C to +85°C) and features a low-power SleepWalking architecture with multiple sleep modes to minimize active current draw. The ATSAM4SA16CB-CFN uses Atmel/Microchip's high-density SuperFlash technology for non-volatile storage, providing 100K endurance cycles and 10-year data retention. Revision B silicon includes USB errata fixes and improved peripheral behavior; Microchip recommends revision B for all new prototype and production designs. Typical applications include industrial control systems, building automation, smart energy meters, point-of-sale terminals, USB peripherals, CAN-based automotive body controllers, and IoT gateways. The combination of Ethernet MAC, USB, and CAN makes it suitable for connected embedded nodes requiring multi-protocol bridging. When designing with this device, allocate sufficient PCB area for the 100-ball VFBGA - the 0.65 mm ball pitch requires 4-layer or better PCB fabrication with microvia technology, and careful decoupling with 100 nF capacitors adjacent to each power ball. For new designs, specify revision B (full part number suffix -CFN already maps to revision B silicon per the part number decoding table). This page synthesizes distributor pricing from DigiKey/Mouser/LCSC, drop-in same-family alternatives from the Microchip SAM4S portfolio, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4SA16CB-CN - SAM4S Cortex-M4 MCU 120MHz 1MB Flash | Microchip
ATSAM4SA16CB-CN

ATSAM4SA16CB-CN - SAM4S Cortex-M4 MCU 120MHz 1MB Flash | Microchip

The Microchip Technology ATSAM4SA16CB-CN is a 32-bit ARM Cortex-M4 microcontroller with 1MB of embedded Flash and 160KB of SRAM, operating at up to 120 MHz, housed in a 100-ball 9x9 mm TFBGA package. This is the Revision B silicon of the SAM4SA16C family, recommended by Microchip for new designs and prototypes. 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, ADCs, and GPIO into one package. Within the broader semiconductor hierarchy, the SAM4S family sits inside the ARM Cortex-M4 32-bit microcontroller category, which itself belongs to the embedded MCU -> microcontroller -> semiconductor taxonomy. The Cortex-M4 core adds single-precision floating-point and a full set of DSP instructions, enabling deterministic signal-processing workloads without an external DSP. The ATSAM4SA16CB-CN integrates a high-speed Multi-port SRAM architecture, a 16-channel 12-bit ADC, two analog comparators, USB 2.0 Full-Speed device/host with on-chip transceiver, up to four USARTs, two UARTs, two TWIs, three SPIs, an HS SD/MMC interface, and a 4-channel 16-bit PWM timer. Operating voltage is 1.62V to 3.6V, with on-chip voltage regulators supporting single-supply operation from 3.3V. The Cortex-M4 core delivers 1.25 DMIPS/MHz with hardware FPU, while a separate low-power Cortex-M4 coprocessor (SleepWalking) handles peripheral wake-up events without CPU intervention. Typical applications include industrial control systems, factory automation, smart metering, motor control, medical instrumentation, and human-machine interface (HMI) panels. The USB Full-Speed capability and SD/MMC interface also make it suitable for data loggers, point-of-sale terminals, and embedded audio front-ends. The extended industrial temperature grade (-40C to +105C) supports harsh-environment deployments. When designing with this device, allocate sufficient PCB area for the 100-ball TFBGA 9x9 mm footprint, which requires 0.8 mm pitch routing and laser-via or microvia PCB technology. Use Microchip Studio (formerly Atmel Studio) with the SAM4S device support package for software development, and refer to the SAM4S datasheet for the full register map, errata list, and reference peripheral driver examples. If you migrate to a revision A silicon, review the revision B errata for peripheral behavioral changes.

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ATSAM4SD16BA-AN - 32-bit ARM Cortex-M4 MCU, 1MB Flash, 120MHz | Microchip
ATSAM4SD16BA-AN

ATSAM4SD16BA-AN - 32-bit ARM Cortex-M4 MCU, 1MB Flash, 120MHz | Microchip

The Microchip ATSAM4SD16BA-AN is a 32-bit ARM Cortex-M4 RISC microcontroller with single-precision floating-point and DSP extensions, integrating 1MB of Flash and 120MHz maximum CPU clock in a 64-pin LQFP (10x10 mm) green-package industrial-temperature-grade variant. The device is part of Microchip's SAM4S family and combines an LQFP green industrial package with the SAM4S peripheral set aimed at general-purpose embedded applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and programmable I/O peripherals. The ARM Cortex-M4 is a 32-bit processor core designed for deterministic real-time control and digital signal processing, widely used in industrial motor control, smart energy, and connected embedded devices. The SAM4S series extends the Cortex-M4 platform with Microchip's peripheral ecosystem, including high-speed USB, CAN, and an external bus interface for legacy SRAM/PSRAM/SDRAM expansion. Key features include 1MB of embedded Flash, up to 120MHz CPU clock, single-precision floating-point unit (FPU), instruction-cache and single-cycle MAC DSP extensions, and a multi-layer bus matrix with separate bridges for SRAM and peripheral DMA. The peripheral set includes USB 2.0 full-speed device/host/OTG, a HS-CAN controller, USARTs, SPI, TWI (I2C), PWM timers, a 12-bit ADC, and a 10-bit DAC. Two I/O supply domains allow 1.2V core operation alongside 3.3V I/O. The architecture combines Cortex-M4 DSP extension with hardware cryptographic accelerators for AES, TDES, and True RNG, making the part well suited for secured connected-device platforms. An integrated float-point unit permits direct execution of C code with floating-point arithmetic without library overhead. Typical applications include industrial control panels, smart-grid metering, USB peripherals, CAN-based automotive body modules, security panels, and motor-control inverter boards. Industrial-grade operating temperature (typically -40C to +85C) supports factory and outdoor deployments, while the LQFP-64 footprint gives plenty of GPIO for legacy peripheral reuse. When designing with this device, ensure the two I/O voltage rails (VDDIO and VDDIN) are decoupled separately, and route the high-speed USB DP/DM lines as a 90-ohm differential pair on PCB layer 2. The 10x10mm LQFP package is hand-solderable but requires thermal relief pads to keep reflow profiles stable. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in any single manufacturer datasheet.

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ATSAM4SD16BA-ANR - 1MB Flash Cortex-M4 MCU 120MHz | Microchip
ATSAM4SD16BA-ANR

ATSAM4SD16BA-ANR - 1MB Flash Cortex-M4 MCU 120MHz | Microchip

The Microchip (formerly Atmel) ATSAM4SD16BA-ANR is a 32-bit ARM Cortex-M4 microcontroller running up to 120 MHz with 1 MB of embedded Flash and 128 KB of SRAM, housed in a 64-pin LQFP (10x10 mm) package. It targets industrial and consumer embedded designs that need a balance of high-performance DSP, large code storage, and rich connectivity in a single chip. A microcontroller (MCU) is a single-chip computer integrating a CPU core, program and data memory, and a wide range of peripherals such as timers, communication controllers, ADCs, and GPIOs. The ATSAM4SD16BA belongs to the Cortex-M4 family (Cortex-M -> ARM -> 32-bit RISC core -> embedded MCU), giving engineers an industry-standard programming model, deterministic interrupt handling, and a broad ecosystem of CMSIS-compliant tools, RTOS ports, and middleware. Key features include a Cortex-M4 core with single-precision FPU and DSP extensions, 1 MB dual-bank Flash supporting in-application programming, 128 KB SRAM with backup SRAM, a 16-bit external bus interface (EBI) for SRAM/SDRAM/NOR/NAND expansion, and a peripheral set that includes up to 6 USART/UART, 2 UART, 3 TWI (I2C-compatible), 2 SPI, one high-speed USB 2.0 full-speed device/host/OTG port, one HS SD/MMC interface, a 12-bit ADC up to 1 Msps, a 12-bit DAC, and multiple 16-bit timers plus an RTC. The on-chip voltage regulator and brown-out detector support a single 1.62 V to 3.6 V supply. Architecturally, the SAM4S uses a multi-layer AHB bus matrix with distributed SRAM and a 4-channel DMA, allowing sustained data movement between peripherals, memory and CPU without bandwidth bottlenecks. Code is executed at up to 120 MHz (1.25 DMIPS/MHz), and the FPU enables floating-point signal processing in audio, motor control, and sensor-fusion algorithms without resorting to soft-float libraries. Typical applications include industrial motor drives and PLCs, building-automation and smart-energy concentrators, smart-grid and metering front-ends, barcode scanners, point-of-sale terminals, medical monitoring peripherals, and USB-enabled human-interface devices. The large 1 MB Flash also makes the part attractive as a single-chip gateway for Sub-GHz or Wi-Fi host MCUs in low-cost IoT nodes. When designing with this MCU, ensure the 64-pin LQFP variant's pinout and supply-rail decoupling match your PCB layout, plan the Flash bank-erase/lock-bit strategy early, and reserve a JTAG/SWD header for firmware bring-up. This page synthesizes distributor pricing, drop-in SAM4S-family alternatives, and practical design notes that go beyond the manufacturer datasheet to speed up selection.

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ATSAM4SD16BA-AU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4SD16BA-AU

ATSAM4SD16BA-AU - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip ATSAM4SD16BA-AU is an ARM Cortex-M4 32-bit microcontroller from the SAM4S family, running up to 120 MHz with 1MB of embedded Flash and 160KB SRAM, housed in a 64-pin LQFP (10x10 mm) industrial-temperature package. It integrates a 2KB instruction cache, single-precision FPU, DSP extensions, and a Memory Protection Unit (MPU), targeting applications that demand deterministic real-time control combined with high code density. A microcontroller (MCU) is a single-chip computer integrating a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. The Cortex-M4 family from Arm is positioned in the hierarchy of 32-bit MCU cores (Cortex-M0 -> Cortex-M3 -> Cortex-M4 -> Cortex-M7) and adds DSP instructions and an optional FPU that accelerates signal-processing loops in motor control, audio, and sensor fusion. Key features of the ATSAM4SD16BA-AU include up to 120 MHz core clock, 1MB Flash, 160KB SRAM, USB 2.0 Full-Speed with on-chip transceiver, CAN 2.0B controller, up to four USART/UART, three TWI (I2C) ports, two SPI interfaces, a 12-bit ADC up to 1 Msps, a 12-bit DAC, and a high-speed 16-bit timer/counter block. The peripheral DMA controller supports up to 16 channels, offloading data movement from the core. Architecturally, the SAM4S uses a multi-layer bus matrix connecting the CPU, SRAM, Flash and peripherals so concurrent DMA and CPU accesses do not stall the core. The 1.8V core regulator is internal, and the device accepts a single 1.62V-3.6V supply on VDDIO, simplifying board design. The instruction cache masks Flash access latency, helping the core sustain the full 120 MHz Dhrystone throughput under interrupt-driven firmware loads. Typical applications include industrial motor control (BLDC/PMSM), smart energy metering, building automation, USB-connected data loggers, HVAC controllers, and barcode scanners. The combination of CAN, USB and 12-bit analog suits automotive body and aftermarket ECUs as well as consumer appliances requiring safe firmware upgrades via USB. Design considerations: place 100 nF decoupling capacitors on every VDD/VDDIO pin, add a 4.7 uF bulk capacitor close to the regulator input, and follow the SAM4S Hardware Design Considerations application note for crystal placement (load capacitor values must match the chosen 8-16 MHz crystal). NRST requires an external 10 kohm pull-up and the JTAG/SWD interface should be reserved for production programming. This page synthesizes verified distributor pricing, drop-in alternatives inside the SAM4S/SAM3S family, and practical design notes that go beyond the manufacturer datasheet summary.

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ATSAM4SD16BA-AUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4SD16BA-AUR

ATSAM4SD16BA-AUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4SD16BA-AUR is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, integrating 1MB of Flash and up to 120MHz CPU clock in a 64-pin LQFP (10x10 mm) package on tape-and-reel. It features a high-performance Thumb-2 instruction set with DSP extensions, single-precision FPU, and a Multi-bit ECC Flash controller for robust code storage in industrial environments. What is a Cortex-M4 microcontroller? A Cortex-M4 microcontroller is a 32-bit processor core designed by ARM Holdings, optimised for embedded applications that require deterministic real-time response, digital signal processing, and low power consumption. Within the taxonomy, the ATSAM4SD16BA-AUR sits as: Cortex-M4 core -> ARM 32-bit MCU -> microcontroller -> embedded IC -> semiconductor. The SAM4S family is Microchip's mainstream Cortex-M4 line, balancing computational throughput with peripheral density for general-purpose industrial and consumer designs. Key specifications include 1MB program Flash, 128KB SRAM, a 16-channel peripheral DMA controller, and an 8-channel 12-bit ADC with up to 1Msps conversion. The device integrates high-speed connectivity including one USB 2.0 Full-Speed port, up to three USART/UART channels, two TWI (I2C-compatible), two SPI interfaces, plus an SSC (Synchronous Serial Controller) for audio/I2S streams. A flexible 16-bit timer/counter block (TC) delivers PWM, capture, and quadrature decoding across multiple channels. Architecturally, the ATSAM4SD16BA-AUR uses a 2-layer AHB matrix providing simultaneous access to Flash, SRAM, and peripherals, eliminating bus contention in data-heavy applications. The integrated voltage regulator supports 1.62V to 3.6V core operation from a single 1.8V-3.6V supply rail. Multi-bit ECC on Flash plus a backup register region preserve critical state during brown-out events, distinguishing the SAM4S family from lower-tier Cortex-M0/M0+ alternatives. Typical applications span industrial PLC I/O modules, building automation gateways, USB peripherals (HID, CDC, mass storage), motor control inverter boards, low-end HMI displays, and consumer appliance controllers. The 64-pin LQFP footprint simplifies hand-prototyping and optical inspection compared with leadless QFN packages, making it popular in medium-volume designs. Designers requiring extended industrial temperature coverage choose this part for factory-floor equipment subject to -40C to +85C ambient swings. When designing with the ATSAM4SD16BA-AUR, allocate PCB real-estate for a 12 MHz or 16 MHz external crystal feeding the PLL to reach the 120MHz core clock. Decouple VDDCORE and VDDIO with 100nF X7R ceramics within 3mm of each pin pair. Configure the Flash wait-states per the device errata and reference the Microchip ASF (Advanced Software Framework) or Harmony 3 for peripheral drivers. This page synthesises real distributor pricing, drop-in SAM4S family alternatives, USB and ADC reference design notes, and pinout guidance not consolidated in the standalone datasheet PDF.

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ATSAM4SD16BA-MU - 120MHz Cortex-M4 MCU 1MB Flash 64-QFN | Microchip
ATSAM4SD16BA-MU

ATSAM4SD16BA-MU - 120MHz Cortex-M4 MCU 1MB Flash 64-QFN | Microchip

The Microchip Technology ATSAM4SD16BA-MU is an ARM Cortex-M4 based 32-bit microcontroller from the SAM4S family, integrating 1MB of Flash memory and running at up to 120MHz, housed in a 64-pin QFN (9x9 mm) package with an exposed thermal pad. It delivers 1MB (1M x 8) Flash and is pin-to-pin compatible with the SAM3N, SAM3S (64/100-pin) and SAM7S legacy devices, enabling drop-in migration paths within the Microchip Atmel portfolio. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor core (developed by Arm Holdings) optimized for embedded applications that demand deterministic real-time response, low power consumption, and rich connectivity. The Cortex-M4 sits inside a layered taxonomy: ARM core -> Cortex-M4 -> Cortex-M family -> 32-bit MCU -> microcontroller -> semiconductor. It adds a DSP instruction set and single-precision FPU on top of the Thumb-2 ISA, giving it a position above Cortex-M0/M3/M0+ in computational capability while preserving deterministic interrupt latency. Key features of the ATSAM4SD16BA-MU include a 2 Kbyte instruction cache, Memory Protection Unit (MPU), DSP instruction set, and Thumb-2 ISA. The SAM4S multi-layer bus matrix, multi-channel DMA, and distributed memory architecture support high data-rate communication peripherals including USB Full-Speed, CAN, USART, SPI, TWI (I2C), and SSC/I2S interfaces. Static and dynamic power-control modes including Sleep, Wait, and Backup reduce quiescent current for battery-powered designs. The device features a multi-layer AHB bus matrix that allows parallel access between the Cortex-M4 core, the Flash controller, the SRAM banks, and the peripheral DMA channels, eliminating contention and supporting simultaneous peripheral transfers. The integrated Flash accelerator with prefetch buffer and branch cache delivers near-zero-wait-state performance at 120MHz from the embedded Flash array, eliminating the need for external memory in most designs. Typical applications for the ATSAM4SD16BA-MU include industrial control boards, point-of-sale terminals, building automation gateways, smart energy metering, USB peripherals, motor control boards, and CAN-connected sensor hubs. The Cortex-M4 DSP extension and FPU make it suitable for sensor-fusion edge nodes running lightweight FFT or Kalman filtering. When designing with this device, ensure the VDDCORE and VDDBU pins are properly decoupled with 100nF + bulk capacitors, and respect the 1.2V core / 3.3V I/O dual-rail supply sequencing. Pin-to-pin compatibility with SAM3N/SAM3S/SAM7S means existing firmware, schematics, and PCB layouts can be migrated by simply reprogramming Flash. This page synthesizes distributor stock, drop-in compatible SAM4S family pin-compatible alternatives, application notes, and design guidance not duplicated on the official Microchip product page - information gain beyond the manufacturer datasheet.

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ATSAM4SD16BA-MUR - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip
ATSAM4SD16BA-MUR

ATSAM4SD16BA-MUR - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip

The Microchip ATSAM4SD16BA-MUR is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, integrating 1 MB of Flash and 160 KB of SRAM in a 64-pin QFN (9x9 mm) package with exposed thermal pad, supplied on tape and reel for high-volume manufacturing. It runs at up to 120 MHz core clock, includes a single-precision Floating Point Unit, and operates from 1.62 V to 3.6 V with a typical 1.2 V internal regulator. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor core with DSP extensions and an optional hardware floating point unit, designed for deterministic real-time embedded control. Within the broader taxonomy, the ATSAM4SD16 belongs to the microcontroller -> RISC microcontroller -> ARM Cortex-M4 -> Cortex-M family hierarchy, and it is a member of the semiconductor IC category used in embedded systems. The M4 ISA adds single-cycle MAC, saturating arithmetic, and SIMD instructions used for sensor fusion, motor control, and audio processing at low cost. Key features include 1 MB embedded Flash with unique signature and security bit, 160 KB SRAM, a Multi-layer Bus Matrix with separate buses for CPU and DMA, a high-speed Multi-port SRAM, and up to 24 DMA channels. Communication peripherals include a full-speed USB 2.0 device port, up to three USARTs, two UARTs, two TWIs (I2C-compatible), one SPI, one Serial Synchronous Controller (SSC), and one High-speed Multimedia Card Interface (HSMCI) for SD/MMC. An external bus interface (EBI) and Static Memory Controller allow expansion to SRAM, NOR Flash, and NAND Flash. A 12-bit ADC with up to 16 channels, a 12-bit DAC, analog comparators, and a Cryptography Accelerator (AES, TDES) are integrated. The device uses a high-performance 90 nm low-power CMOS process and offers multiple low-power modes (Sleep, Wait, Backup, Deep Backup) with fast wake-up and RTC running in backup mode. The embedded voltage regulator and Power-on Reset reduce BOM, while the brown-out detector and watchdog timer improve robustness in industrial environments. Typical applications include industrial control (PLCs, sensor hubs, motor drives), human-machine interfaces (HMI) with TFT-LCD panels, secure connected gateways (with AES/TDES hardware crypto), data loggers, USB peripherals, and consumer audio devices. The wide operating temperature range of -40 C to +85 C (industrial grade) suits factory automation and outdoor equipment. When designing with the ATSAM4SD16BA-MUR, provide a 1 uF + 100 nF decoupling pair on each VDD/VDDIO pin and keep the exposed pad (EP) soldered to a continuous ground pour for thermal dissipation up to 500 mW. Configure the optional NRST reset circuit with a 10 kohm pull-up and 100 nF capacitor per the SAM4S hardware design checklist. This page synthesizes distributor stock levels, drop-in SAM4S/ATSAM4S alternatives, USB and crypto peripheral details, and practical PCB layout notes not found in the manufacturer datasheet alone.

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ATSAM4SD16BA-UUR - 1MB Flash Cortex-M4 MCU 64-WLCSP | Microchip
ATSAM4SD16BA-UUR

ATSAM4SD16BA-UUR - 1MB Flash Cortex-M4 MCU 64-WLCSP | Microchip

The Microchip ATSAM4SD16BA-UUR is a 32-bit ARM Cortex-M4 microcontroller with 1MB of Flash and 160KB of SRAM, packaged in a 64-ball WLCSP (Wafer Level Chip Scale Package) and rated for industrial temperature operation. It integrates a high-performance 120 MHz core with single-precision FPU, a full-speed USB 2.0 Device port, up to 47 I/O lines, and a rich peripheral set including multiple USART/UART, SPI, TWI (I2C), an 8-channel 10-bit ADC, and a 16-bit PWM timer block. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor core that combines micro-controller-class deterministic interrupt behavior with DSP extensions and a single-precision floating-point unit. The Cortex-M4 belongs to the ARMv7-M architecture family and executes the Thumb-2 instruction set, allowing high code density while retaining deterministic timing. The broader category hierarchy is: Cortex-M4 -> ARM Cortex-M -> 32-bit MCU -> microcontroller -> embedded processing IC -> semiconductor. Key features of the ATSAM4SD16BA-UUR include 1MB of dual-bank Flash for safe in-field firmware upgrades, 160KB SRAM with bus-matrix arbitration, a peripheral DMA controller with multiple channels, and an embedded Flash controller that accelerates code execution via cache/prefetch. The part carries the Atmel SMART SAM4S family enhancements for deterministic real-time control, including event system, SysTick, and SleepWalking peripherals that minimize active current in battery-powered designs. Typical applications include industrial control panels, low-power sensor hubs, USB peripherals (HID, CDC, custom classes), smart metering, and connected IoT edge nodes. Its 1MB dual-bank Flash makes it especially suited for products that require OTA (over-the-air) firmware updates with safe rollback. The WLCSP64 package also enables compact wearable and portable designs where PCB area is at a premium. When designing with this part, ensure that the WLCSP64 PCB land pattern is correctly designed with NSMD pads and that the board-level assembly process is qualified for wafer-level packages. The internal 1.2V LDO and on-chip voltage regulator must be properly decoupled per the reference design. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4SD16BB-MN - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4SD16BB-MN

ATSAM4SD16BB-MN - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4SD16BB-MN is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, delivering 120 MHz CPU performance with 1 MB of embedded Flash and 160 KB of SRAM in a 64-pin QFN (9x9 mm) package. The device integrates a single-precision FPU, a high-speed Multi-port SRAM architecture, and a rich peripheral set including USB 2.0 Full-Speed, CAN, EMAC, and a 16-bit External Bus Interface (EBI). A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a configurable set of peripherals on one die. The ARM Cortex-M4 core is a 32-bit RISC processor designed by ARM specifically for embedded deterministic real-time control, adding DSP extensions and an optional single-precision IEEE-754 floating-point unit. Within the broader hierarchy: Cortex-M4 -> 32-bit MCU -> RISC microcontroller -> embedded controller -> semiconductor IC. The SAM4S family sits in Microchip's mainstream-performance ARM-MCU tier, aimed at industrial, consumer, and connectivity-rich applications. Key features of the ATSAM4SD16BB-MN include: 1 MB dual-bank Flash supporting in-application programming (IAP), 160 KB SRAM organized as 2x32KB + 128KB for high-bandwidth DMA without bus arbitration stalls, 120 MHz/150 DMIPS coreMark performance, and a Multi-port SRAM controller that allows simultaneous CPU and DMA access. The chip also embeds a 4-channel 16-bit ADC, a 12-bit DAC, two 2-channel 16-bit timers, a 4-channel 16-bit PWM, an Ethernet MAC (EMAC) with MII/RMII interface, and a USB 2.0 Full-Speed device/host/OTG controller. Hardware cryptographic accelerators (AES, DES, SHA) and a True Random Number Generator (TRNG) make it suitable for connected and secure-node designs. Architecturally, the ATSAM4SD16BB-MN uses a 6-layer AHB matrix that lets the CPU, DMA, Ethernet MAC, USB, and EBI controllers contend for SRAM and Flash without wait-state bottlenecks under typical traffic. The Cortex-M4 DSP extensions and FPU accelerate closed-loop control and DSP filters in firmware, while the dual-bank Flash allows firmware update over-the-air with safe fallback to a golden image, a pattern common in IoT gateways and motor-control firmware. Typical applications include industrial PLC modules, motor control (BLDC, FOC), smart energy metering, USB peripherals, barcode scanners, industrial gateways with Ethernet/CAN, and graphical HMI panels. Designers leverage the EBI to attach external memories/parallel LCDs, and the hardware crypto for TLS acceleration in connected devices. Design consideration: the 64-pin QFN package has an exposed thermal pad that must be soldered to a ground plane with thermal vias to achieve the rated 105°C extended-temperature operation. Brown-out and watchdog features must be configured in startup code to ensure deterministic reset behavior in industrial installations. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4SD16BB-MNR - 120MHz Cortex-M4 MCU 1MB Flash 64-QFN | Microchip
ATSAM4SD16BB-MNR

ATSAM4SD16BB-MNR - 120MHz Cortex-M4 MCU 1MB Flash 64-QFN | Microchip

The Microchip ATSAM4SD16BB-MNR is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, operating at up to 120 MHz with 1 MB of embedded Flash and 160 KB of SRAM, housed in a 64-pin QFN (9x9 mm) package. It integrates a high-performance Cortex-M4 core with single-precision FPU, an MPU, and a peripheral set that includes a full-speed USB 2.0 Device port with embedded transceiver, up to six USARTs, three UARTs, two TWIs, three SPIs, an I2S interface, a 12-bit ADC, a 12-bit DAC, and a 16-bit PWM/TC capture channel array. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and programmable peripherals. The Cortex-M4 is a 32-bit RISC core designed by ARM that adds DSP extensions and an optional single-precision floating-point unit (FPU); it belongs to the Cortex-M microcontroller family within ARM's broader processor IP portfolio. SAM4S microcontrollers sit in the 32-bit performance MCU segment between low-power Cortex-M0+ devices and high-end Cortex-M7 parts, and they are widely used where deterministic real-time control and rich connectivity are required. Key features of the ATSAM4SD16BB-MNR include 1 MB of dual-bank Flash with cache for zero-wait-state execution at 120 MHz, 160 KB SRAM, a full-speed USB 2.0 Device port, an external bus interface (EBI) supporting SRAM, NOR Flash, and NAND Flash, and an operating voltage range of 1.62 V to 3.6 V. The device supports industrial-grade temperatures (-40C to +105C for the -MNR extended-temp suffix) and integrates a real-time clock, RTC backup domain, and a 12-channel 1 Msps 12-bit ADC suitable for mixed-signal acquisition. The architecture combines a Harvard bus with a multi-layer AHB/APB matrix, dedicated DMA controllers (12 peripheral-DMA channels plus two high-speed channels), and a 16-bit external bus interface, enabling deterministic I/O and high-throughput data movement. Hardware AES (128-bit) is available in select variants, and the SAM4S supports Atmel/Microchip SAM-BA boot, ISP via UART, and JTAG/SWD debug. Revision B silicon (the -BB suffix) is the recommended silicon revision for new designs per Microchip guidance. Typical applications include industrial control and HMI panels, USB peripherals and HID devices, smart energy meters, building automation gateways, motor control (BLDC/PMSM sensorless drives), and consumer audio products. The 1 MB Flash allows on-board firmware plus a USB bootloader and configuration tables without external memory. When designing with this part, choose LQFP or QFN land patterns according to thermal and rework needs; the QFN-64 (9x9 mm) provides an exposed thermal pad that must be soldered to a continuous ground copper pour to meet thermal and electrical performance. Decouple VDDIO and VDDCORE with 100 nF X7R ceramic caps placed within 2 mm of each pin pair, and reserve the NRST line with the standard 10 kohm pull-up and 1 nF cap reset network. This page synthesizes the ATSAM4SD16BB-MNR datasheet, distributor pricing as of 2026-09-21, and pin-compatible drop-in alternatives that enable a faster design-in cycle than reading the manufacturer datasheet alone.

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ATSAM4SD16CA-AN - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip
ATSAM4SD16CA-AN

ATSAM4SD16CA-AN - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip

The Microchip ATSAM4SD16CA-AN is a high-performance 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, integrating 1MB of Flash and 160KB of SRAM in a 100-pin LQFP package with an integrated FPU and DSP instructions. It operates at up to 120 MHz core clock speed and is supplied from a 1.2V internal regulator fed by a wide 1.62V to 3.6V external supply. The part provides 79 general-purpose I/O lines and a rich set of peripherals. Key features include 2x512KB dual-bank Flash supporting safe in-application programming, a 16-bit ADC, 12-bit DAC, multiple UART/USART, SPI, I2C, USB 2.0 Full-Speed, CAN, and an External Bus Interface (EBI) for SRAM/NOR/NAND memories. The device also integrates a cryptographic accelerator and a true random number generator (TRNG), enabling hardware-accelerated AES, SHA, and secure key storage for IoT and connected-device designs. An Event System and Peripheral DMA Controller minimize CPU load by handling data movement autonomously. The ATSAM4SD16CA-AN uses a Cortex-M4 core with single-precision floating-point unit and DSP extensions, achieving 1.25 DMIPS/MHz (Dhrystone 2.1) and supporting the full ARM Cortex Microcontroller Software Interface Standard (CMSIS). The 100-pin LQFP package exposes the full set of peripherals while remaining manufacturable with standard 4-layer PCB processes, making it well suited for prototyping through volume production. Typical applications include industrial control and HMI, building automation, smart energy metering, USB peripherals, motor control (BLDC/PMSM), and connected IoT edge nodes with secure communications. The 120 MHz speed and DSP instructions also support audio processing, sensor fusion, and protocol stacks requiring real-time computation. When designing with this part, allocate careful PCB real estate for decoupling: place 100 nF X7R capacitors near each VDD pin pair and a bulk 4.7 uF capacitor on the main 3.3V rail. The exposed-pad variant of LQFP must be soldered to a thermal pad for proper heat dissipation and ground integrity. Plan Flash bank layout carefully when implementing dual-bank firmware updates. This page synthesizes distributor pricing, same-brand SAM4S family alternatives, and practical design guidance not found in the manufacturer datasheet, helping engineers shorten the design-in cycle for industrial-grade Cortex-M4 designs.

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ATSAM4SD16CA-ANR - 1MB Cortex-M4 MCU, 120MHz, LQFP-100 | Microchip
ATSAM4SD16CA-ANR

ATSAM4SD16CA-ANR - 1MB Cortex-M4 MCU, 120MHz, LQFP-100 | Microchip

The Microchip (formerly Atmel) ATSAM4SD16CA-ANR is a 32-bit ARM Cortex-M4 RISC microcontroller featuring 1MB of Flash, 160KB of SRAM, and a maximum CPU clock of 120 MHz, housed in a 100-pin LQFP package supplied on Tape & Reel. 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 interfaces, and analog blocks. Cortex-M4 devices specifically add a single-precision floating-point unit (FPU) and DSP extensions, making them well-suited for signal processing. Positioned within the broader hierarchy, a Cortex-M4 MCU belongs to the ARM Cortex-M family -> 32-bit microcontroller -> embedded processor -> semiconductor IC. The SAM4S family from Microchip targets industrial, consumer, and connectivity-driven embedded applications. Key features include dual-bank Flash architecture for live firmware updates, a full-speed USB 2.0 Device port with embedded transceiver, up to 16 peripheral DMA channels, and a flexible Static Memory Controller that supports SRAM, NOR Flash, and NAND Flash. The device operates from 1.62V to 3.6V, includes a 12-bit ADC, a 12-bit DAC, and multiple serial interfaces including USART, SPI, and TWI (I2C-compatible). Architecturally, the SAM4SD16 is built on a Harvard-bus design with separate instruction and data buses, a 3-stage pipeline, and an MPU for memory protection. The Cortex-M4 core delivers 1.25 DMIPS/MHz with hardware single-cycle MAC and SIMD instructions, enabling efficient DSP workloads such as motor control and audio processing. The dual-bank Flash enables in-application programming without halting code execution. Typical applications include industrial control and HMI panels, USB peripherals and smart-card readers, motor control (BLDC and stepper), building automation gateways, and portable data-acquisition devices. The high SRAM-to-Flash ratio and DMA-rich peripheral set also make it a fit for protocol bridges and gateway designs. Design consideration: the LQFP-100 package's exposed thermal pad is recommended for solder-joint reliability, even though the device does not generate significant heat. Decoupling must include a 100nF ceramic on each VDD pin and a bulk 4.7uF near the regulator output. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet alone, helping engineers compare the ATSAM4SD16CA-ANR with same-family variants and cross-brand alternatives in a single view.

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ATSAM4SD16CA-AU - SAM4S Cortex-M4 MCU 120MHz 1MB | Microchip
ATSAM4SD16CA-AU

ATSAM4SD16CA-AU - SAM4S Cortex-M4 MCU 120MHz 1MB | Microchip

The Microchip (formerly Atmel) ATSAM4SD16CA-AU is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, featuring a 120 MHz core with 2 Kbytes of cache, 1 Mbyte (2 x 512 Kbytes dual-bank) embedded Flash, and 160 Kbytes of SRAM, housed in a 100-pin LQFP package (14x14 mm). It integrates DSP instructions, Thumb-2 instruction set, a Memory Protection Unit (MPU), and a multi-layer bus matrix with multi-channel DMA. An ARM Cortex-M4 microcontroller is a 32-bit processor core designed for embedded systems, combining high computational throughput with low power consumption and a rich interrupt model. Within the broader taxonomy, it sits in the hierarchy: ARM Cortex-M4 -> Cortex-M family -> ARM 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. The M4 variant adds single-precision FPU and DSP extensions, making it suitable for signal-processing tasks. Key features of the ATSAM4SD16CA-AU include 1 Mbyte dual-bank Flash with ECC, security bit, and lock bits, up to 120 MHz operation, integrated FPU and DSP instructions, MPU, dual 16-bit timers and a comprehensive peripheral set including USART, SPI, TWI, PWM, and ADC. The device operates from 1.62V to 3.6V and includes a Brown-Out Detector (BOD) and Watchdog. The architecture features a multi-layer AHB bus matrix that allows parallel data paths between the CPU, DMA controller, and peripherals, enabling high data throughput without bus contention. The dual-bank Flash permits in-application programming (IAP) without halting the CPU, supporting field firmware upgrades with rollback safety. Typical applications include industrial control, smart energy metering, USB peripherals, point-of-sale terminals, and motor control. Pin-to-pin compatibility with SAM3N, SAM3S (64/100-pin) and SAM7S legacy devices enables seamless migration of existing designs to Cortex-M4. For new designs, Microchip recommends considering Revision B (ATSAM4SD16CB-AU) for prototypes and production due to errata fixes and lifecycle continuity. This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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ATSAM4SD16CA-AUR - 120MHz Cortex-M4 1MB Flash MCU | Microchip
ATSAM4SD16CA-AUR

ATSAM4SD16CA-AUR - 120MHz Cortex-M4 1MB Flash MCU | Microchip

The Microchip Technology ATSAM4SD16CA-AUR is an ARM Cortex-M4 based 32-bit microcontroller (MCU) from the SAM4S family, operating at up to 120 MHz and integrating 1 MB of dual-bank embedded Flash plus 160 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) package supplied on tape-and-reel. The device combines a 2 KB instruction cache, Memory Protection Unit (MPU), DSP extensions, and a Thumb-2 instruction set to deliver deterministic real-time performance for embedded designs. A peripheral set including high-speed USB 2.0 Full-Speed, up to five USARTs, two UARTs, two TWIs (I2C), an HS SPI, a 12-bit ADC, a 24-bit timer/counter block, and PWM channels supports industrial control and consumer applications. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, volatile working memory, and a mix of digital and analog peripherals. The Cortex-M4 family adds DSP instructions and (in some parts) a single-precision FPU, enabling on-the-fly audio decoding, motor control math, and sensor-fusion algorithms. SAM4S devices specifically target general-purpose 32-bit upgrades from Atmel SAM3S designs, offering software and pin compatibility for a smooth migration path while doubling peak throughput. Key differentiating specifications include 120 MHz CPU clock with single-cycle MAC, 1 MB Flash with Error-Correction Code (ECC) and security/lock bits, 160 KB SRAM with parity, and a multi-layer bus matrix plus distributed DMA for high data throughput. The SAM4S core achieves 1.25 DMIPS/MHz and embeds an MPU and SysTick timer for industrial-grade deterministic RTOS execution, while a dedicated crypto engine (when enabled in SAM4S variants) supports AES and True Random Number Generation. Typical applications include industrial automation controllers (PLC, motor drives, sensor hubs), smart energy metering, building automation gateways, medical instrumentation, USB peripherals and Human Interface Devices (HID), point-of-sale terminals, and consumer audio systems. The 120 MHz core is well-matched to graphics rendering and low-cost TFT-LCD driving, while the USB FS controller supports tethered peripherals. A key design consideration is Microchip's explicit recommendation that for new designs engineers use the Revision B die (e.g. ATSAM4SD16CB-AUR or -CFUR) for both prototyping and production. The revision-A die should be limited to existing designs and inventory continuity. Developers should also verify supply availability through authorized distributors before committing to a PCB layout, as legacy SAM4S parts have been subject to ongoing allocation cycles. This page synthesizes distributor pricing from DigiKey, Mouser, LCSC and Octopart, cross-references drop-in alternatives within the SAM4S family, and adds design notes not consolidated in the manufacturer datasheet.

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ATSAM4SD16CA-CU - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip
ATSAM4SD16CA-CU

ATSAM4SD16CA-CU - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip

The Microchip Technology ATSAM4SD16CA-CU is a 32-bit ARM Cortex-M4 microcontroller built on the SAM4S family, integrating 1 MB of Flash and 160 KB of SRAM in a 100-pin TFBGA (9x9 mm) package. It runs at up to 120 MHz with a 2 KB instruction cache, supports the Thumb-2 instruction set, DSP instructions, and a Memory Protection Unit (MPU), targeting industrial-grade embedded designs. What is a Cortex-M4 microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripherals. The ARM Cortex-M4 specifically is a 32-bit core optimized for deterministic real-time performance and digital signal processing (DSP), combining low power consumption with hardware multiply-accumulate and saturating arithmetic. Within the broader taxonomy, the ATSAM4SD16CA-CU belongs to: microcontroller -> 32-bit MCU -> ARM Cortex-M MCU -> SAM4S family -> power-managed embedded MCU. Key features of this device include a 2 KB cache, MPU, DSP instruction set, and a multi-layer bus matrix with multi-channel DMA. The SAM4S family is pin-to-pin compatible with the SAM3N, SAM3S, SAM4N, and SAM7S legacy families (64-pin and 100-pin versions), enabling smooth migration paths for existing designs. The dual-bank Flash supports read-while-write (RWW) operation, and an embedded ROM contains UART/USB bootloader and in-application programming routines. Architecturally, the ATSAM4SD16CA-CU pairs a high-throughput 120 MHz Cortex-M4 with a multi-layer AHB bus matrix that allows simultaneous transfers between the CPU, DMA, and peripherals, eliminating bottlenecks. The peripheral set includes USB 2.0 Full-Speed, CAN, EMAC for Ethernet, up to 10 UART/USART, TWI (I2C), SPI, SSC for audio, an 8-channel 10/12-bit ADC, and a 16-bit PWM/timer block. An embedded voltage regulator and brown-out detector simplify 1.8V-3.6V single-supply designs. Typical applications include industrial control and PLCs, factory automation nodes, building automation gateways, smart energy metering, and connected sensor hubs. The 1 MB Flash enables full TCP/IP stacks plus application firmware on a single device, while the dual-bank structure supports secure OTA firmware updates. When designing with this device, allocate the VDDPLL decoupling network near pins VDDCORE/VDDPLL and use the exposed thermal considerations for the BGA's inner-row balls. Configure the embedded voltage regulator's decoupling per the SAM4S reference design. This page synthesizes distributor pricing, drop-in same-package alternatives from the SAM4S family, and practical design notes not consolidated in the manufacturer datasheet.

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ATSAM4SD16CA-CUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4SD16CA-CUR

ATSAM4SD16CA-CUR - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4SD16CA-CUR is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, featuring a 120 MHz core, 1 MB of Flash, and 160 KB of SRAM, housed in a 100-pin TFBGA (9x9 mm) package on tape-and-reel. It integrates a Floating Point Unit (FPU), a Memory Protection Unit (MPU), and a rich peripheral set including USB 2.0 Full-Speed, up to two CAN controllers, multiple USART/UART/SPI/TWI ports, a 12-bit ADC, and a 16-bit PWM/timer block. What is a Cortex-M4 microcontroller? A Cortex-M4 MCU is a 32-bit RISC processor core designed by ARM for deterministic embedded applications, featuring a single-precision FPU, DSP extensions, and low interrupt latency. It sits within the broader taxonomy of microcontroller -> 32-bit MCU -> ARM Cortex-M family -> Cortex-M4 sub-family, and is widely used in industrial, consumer, and connectivity applications where both signal-processing performance and low power are required. Key features include 1 MB embedded Flash organised as dual-bank 512 KB for in-application programming, 160 KB SRAM with optional battery backup domain, a high-speed MultiMedia Card Interface (HSMCI) for SD cards, and an Embedded Trace Macrocell (ETM) for real-time instruction trace. The device operates from 1.62 V to 3.6 V and is qualified for the industrial temperature range (-40 °C to +85 °C). Architecturally, the SAM4SD16 uses a 3-layer AHB/LPB bus matrix that allows simultaneous peripheral and SRAM access without contention, plus a Peripheral DMA controller (PDC) that offloads memory transfers from the CPU. The integrated FPU delivers single-cycle MAC operations, enabling audio codecs, sensor-fusion algorithms, and small FFT workloads to run on the MCU itself. Typical applications include industrial PLCs and motor-control front ends, USB peripherals and human-interface devices, smart energy and metering, medical instrumentation, and consumer audio products. The dual-bank Flash and bootloader (SAM-BA) support secure field upgrades, which is important for long-life industrial deployments. When designing with this part, allocate the 100-ball TFBGA footprint carefully: it requires microvia-compatible PCB stack-ups and proper thermal copper under the array. Power-supply decoupling must include a 100 nF cap per VDD pin and a bulk 4.7 µF near the regulator, as recommended in the SAM4S datasheet. This page synthesises distributor pricing, drop-in same-package alternatives, comparison data, and practical PCB design notes not found in the manufacturer datasheet alone, helping engineers evaluate second-source options and accelerate their design-in decisions.

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ATSAM4SD16CB-ANR - 32-bit ARM Cortex-M4 MCU, 1MB Flash, 100-LQFP | Microchip
ATSAM4SD16CB-ANR

ATSAM4SD16CB-ANR - 32-bit ARM Cortex-M4 MCU, 1MB Flash, 100-LQFP | Microchip

The Microchip Technology ATSAM4SD16CB-ANR is a 32-bit ARM Cortex-M4 microcontroller with Floating Point Unit (FPU), 1MB dual-bank Flash memory (organized as 2 x 512KB), 160KB SRAM, and a maximum CPU clock of 120 MHz, supplied in a 100-pin LQFP package on tape-and-reel. It belongs to the SAM4SD16C family (revision B, MRL B silicon) and integrates a full-speed USB 2.0 Device port with embedded transceiver, a high-speed 16-bit host/host+device bus for external memory, multiple USART/UART, SPI, TWI (I2C), an 8-channel 10-bit ADC, a 16-bit timer/counter block, and an embedded crypto engine (TRNG + AES) on selected variants. What is a Cortex-M4 microcontroller? A Cortex-M4 microcontroller is a 32-bit RISC processor core designed by Arm Holdings specifically for embedded applications that require deterministic real-time performance and (optionally) single-precision floating-point math. The Cortex-M4 sits at the top of the Cortex-M family for performance; it is positioned between the smaller Cortex-M0+/M3 and the higher-end Cortex-M7. MCUs based on this core are widely used in motor control, industrial automation, consumer audio, USB peripherals, and IoT edge nodes where both DSP-like signal processing and low power are required. Key features of the ATSAM4SD16CB-ANR include 1MB Flash (dual-bank for in-field firmware upgrade), 160KB SRAM, a high-speed Multi-port SRAM bus, an external bus interface (EBI) supporting SRAM, NOR Flash, and PSRAM, a full-speed USB Device port, an SD/MMC interface, two I2S controllers, two 3-channel 16-bit timer/counters, four USARTs, two UARTs, two TWI (I2C) ports, two SPI ports, one HS-SPI, an 8-channel 10-bit ADC, and a Real-Time Clock with calendar/alarm. The 100-LQFP package (14 mm x 14 mm) gives access to most peripherals while remaining hand-solderable for prototypes. The ATSAM4SD16CB-ANR uses a single 1.62V to 3.6V supply, with internal voltage regulators generating the 1.2V core voltage. Power consumption is in the single-digit milliampere range at full 120 MHz speed, and several low-power modes (Sleep, Wait, Backup) reduce quiescent draw dramatically. The chip operates over the industrial -40C to +85C range, with the -ANR suffix designating extended temperature grade (105C) and tape-and-reel packaging. Typical applications include industrial control PLCs and HMIs, USB peripherals such as data loggers and POS terminals, smart energy metering, building automation gateways, motor-control BLDC drives, and consumer audio devices that benefit from the I2S ports and DSP instructions. Revision B (MRL B) silicon is the recommended variant for new designs; older revisions are now legacy. When designing with this part, place a 10uF plus 0.1uF bulk-rail decoupling network within a few millimetres of each VDD/VBAT pin pair, and keep the 32.768 kHz crystal trace short and guarded. The USB DP/DM traces should be routed as a 90-ohm differential pair and the ferrite bead per Microchip application note recommendations to pass USB compliance.

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ATSAM4SD16CB-CFN - 120MHz Cortex-M4 MCU 1MB Flash | Microchip
ATSAM4SD16CB-CFN

ATSAM4SD16CB-CFN - 120MHz Cortex-M4 MCU 1MB Flash | Microchip

The Microchip Technology ATSAM4SD16CB-CFN is a 32-bit ARM Cortex-M4 RISC microcontroller running at up to 120 MHz, integrating 1 MB of on-chip Flash (1M x 8) and 160 KB of SRAM in a 100-ball VFBGA package (7x7 mm). Built on Microchip's SAM4S family, this revision-B silicon delivers DSP extensions, a single-precision FPU, and a flexible multi-layer bus matrix for high-throughput embedded designs. According to the Microchip product page, the device operates from a 1.2 V core / 3.3 V I/O dual-rail scheme and is qualified for extended industrial temperature ranges. What is a Cortex-M4 microcontroller? A Cortex-M4 is an ARMv7-M 32-bit core with single-precision floating-point, hardware DSP instructions, and deterministic interrupt handling. It belongs to the microcontroller hierarchy: ARM Cortex-M -> 32-bit MCU -> RISC microcontroller -> embedded processor -> semiconductor. Cortex-M4 parts are widely chosen when engineers need DSP throughput (e.g., audio codecs, motor control, sensor fusion) without stepping up to Cortex-M7 cost or to Cortex-A application-processor complexity. Key features of the ATSAM4SD16CB-CFN include: 1 MB dual-bank Flash with secure boot and EEPROM emulation, 160 KB SRAM, a 16-bit external bus interface, a high-speed USB 2.0 Full-Speed device port with on-chip PHY, a 10/100 Ethernet MAC (GMAC), up to five USART/UART, three TWI (I2C), two SPI, one HS-SPI, one I2S, and a 12-bit ADC with up to 24 channels. The device also integrates a 16-bit timer/counter block, a real-time clock, and a 32-bit SysTick. The 100-ball VFBGA is the smallest outline in the SAM4S family, suiting compact modules. The architecture uses a multi-layer AHB bus matrix that lets the Cortex-M4 core, DMA controller, and peripherals operate concurrently with minimal contention. Flash is accessed through a 128-bit-wide interface with prefetch buffers, sustaining close to the theoretical 120 MHz instruction throughput even with wait states. Revision B (denoted by the 'B' suffix in CB) is the recommended silicon for all new designs, per Microchip's revision guidance, fixing errata present on earlier revisions. Typical applications include industrial PLC and HMI controllers, point-of-sale terminals, barcode scanners, building-automation gateways, USB peripherals, smart metering, and motor-control boards. The integrated HS-SPI plus I2S plus GMAC makes the part a strong fit for connected-embedded products that combine audio, networking, and user interfaces on a single chip. When designing with this MCU, plan for a 1.2 V core supply generated either from an internal regulator (3.3 V single-rail mode) or from an external LDO when lowest analog noise is needed on the ADC. Decouple every VDD/VBAT/VDDIO pin per the reference schematic and follow Microchip's VFBGA fan-out recommendations to avoid package warpage on second-side reflow. This page synthesizes distributor pricing, pin-compatible SAM4S family drop-in alternatives, and practical PCB and design notes not found in the manufacturer datasheet.

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ATSAM4SD16CB-CFNR - SAM4S Cortex-M4 120MHz 1MB MCU | Microchip
ATSAM4SD16CB-CFNR

ATSAM4SD16CB-CFNR - SAM4S Cortex-M4 120MHz 1MB MCU | Microchip

The Microchip Technology ATSAM4SD16CB-CFNR is a 32-bit ARM Cortex-M4 microcontroller in the SAM4S family, featuring a 120 MHz CPU core with single-precision FPU, 1 MB of Flash, and 160 KB of SRAM, housed in a 100-ball 7x7 mm VFBGA package. The device is specified for an industrial extended temperature range and ships on tape and reel for high-volume assembly. A microcontroller (MCU) is a single-chip processor that integrates a CPU core, memory (Flash and SRAM), and a rich set of peripherals including timers, communication interfaces (USART, SPI, TWI), and analog blocks (ADC). In the wider system hierarchy, an MCU sits inside the embedded-computing IC category, below microprocessors (MPU) and above discrete logic. The Cortex-M4 core specifically targets deterministic real-time control with DSP extensions, allowing both control loops and signal-processing tasks to run on a single chip. Key features of the ATSAM4SD16CB-CFNR include up to 120 MHz core clock, 1 MB embedded Flash (configured as 2 x 512 KB dual-bank for live updates), 160 KB SRAM, an external bus interface, a 16-bit External Interrupt Controller, and the standard SAM4S peripheral set (HS USB, CAN, EMAC, multiple USART/SPI/TWI). An integrated voltage regulator and brown-out detector simplify power-tree design at 1.2 V core / 3.3 V I/O operation. Architecturally, the SAM4SD16 uses the Cortex-M4 with Thumb-2 instruction set, NVIC for deterministic interrupts, and a multi-layer bus matrix connecting Flash, SRAM, and peripheral bridges. This high-bandwidth interconnect is what allows the 120 MHz core to feed the Ethernet MAC, HS USB, and other high-throughput peripherals without contention. The dual-bank Flash further supports in-application programming and safe firmware updates, which is critical for products that cannot tolerate downtime during reflash. Typical applications include industrial control and HMI panels, smart energy metering, building automation gateways, point-of-sale terminals, consumer audio peripherals, and connectivity-rich IoT edge nodes. The combination of HS USB, CAN, and EMAC makes it especially attractive for industrial gateway designs that bridge field-bus networks to Ethernet backhaul. When designing with this part, pay attention to the VFBGA-100 PCB land pattern, keep the analog supply cleanly decoupled, and use the on-chip brown-out and watchdog features to meet IEC functional-safety expectations in industrial deployments. New designs should target silicon Revision B as recommended by the manufacturer. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATSAM4SD16CB-CN - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip
ATSAM4SD16CB-CN

ATSAM4SD16CB-CN - 120MHz Cortex-M4 MCU, 1MB Flash | Microchip

The Microchip ATSAM4SD16CB-CN is a 32-bit ARM Cortex-M4 microcontroller running at 120MHz with a single-precision hardware FPU and DSP extensions, integrating 1MB of dual-bank Flash and 160KB of SRAM in a 100-ball TFBGA (9x9 mm) package. The device is revision B of the SAM4S family, which the manufacturer recommends for new designs and prototypes, and it operates from a 1.62V to 3.6V supply across the -40C to +105C extended industrial temperature range. What is a Cortex-M4 microcontroller? A Cortex-M4 MCU is a 32-bit embedded controller built around the ARM Cortex-M4 processor core, which includes a single-precision floating-point unit, DSP extensions (MAC, SIMD), and the deterministic NVIC interrupt controller. It sits in the hierarchy Cortex-M4 -> ARM Cortex-M -> 32-bit MCU -> microcontroller -> semiconductor, and compared with Cortex-M0/M3 parts it adds hardware floating-point and DSP instructions that accelerate signal-processing and control-loop code without software FPU libraries. Key features include 1MB of embedded Flash organized as two independent 512KB banks, 160KB SRAM, up to five USARTs, three UARTs, two TWI (I2C) ports, three SPIs, one HSMCI (SD card) interface, one USB 2.0 Full-Speed device port, and a 12-bit ADC with up to 16 analog channels. The revision-B die also enables the bootloader-in-Flash (BFB) mode and improved in-application programming (IAP) for safe firmware updates without external memory. Architecturally, the SAM4SD16CB-CN uses a multi-layer AHB/APB bus matrix that allows simultaneous data transfer between peripherals and the dual-bank Flash, reducing CPU stalls. The on-chip voltage regulator can be configured in LDO or buck mode, and the peripheral event system offloads simple inter-peripheral signalling from the CPU. The dual-bank topology allows one bank to run code while the other is being reprogrammed, supporting field-upgradeable firmware in industrial deployments. Typical applications include industrial PLCs, HVAC controllers, smart meters, USB human-interface devices, point-of-sale terminals, building-automation gateways, and motor-control interfaces. The 1MB Flash plus 160KB SRAM combination is large enough to host a TCP/IP stack and an RTOS (such as lwIP plus FreeRTOS) without external memory expansion. When designing with this MCU, allocate the 100-ball TFBGA escape for at least four PCB routing layers with 0.5mm-pitch micro-vias, and use the on-chip regulator in LDO mode for cost-sensitive designs. Place a 100nF decoupling capacitor within 5mm of the AVDD pin and use a dedicated analog ground plane to meet the 12-bit ADC ENOB specifications; this page synthesizes distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet.

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