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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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ATSAM4SD16CB-CNR - 120MHz Cortex-M4 MCU 1MB Flash TFBGA-100 | Microchip
ATSAM4SD16CB-CNR

ATSAM4SD16CB-CNR - 120MHz Cortex-M4 MCU 1MB Flash TFBGA-100 | Microchip

The Microchip ATSAM4SD16CB-CNR is an ARM Cortex-M4 microcontroller built on the Atmel/Microchip SAM4S platform, delivering 120 MHz CPU performance with 1 MB of embedded Flash and 160 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package. It is the Revision B silicon variant supplied on Tape & Reel and is intended for extended-temperature industrial designs that require deterministic real-time control. The CB suffix indicates Revision B silicon (the manufacturer recommends Revision B for all new prototype and production designs), and the trailing R denotes the tape-and-reel packing option. An ARM Cortex-M4 MCU is a 32-bit RISC microcontroller that combines a high-efficiency processing pipeline with optional single-precision Floating-Point Unit, hardware MAC, and a tightly-coupled Nested Vectored Interrupt Controller. The Cortex-M4 architecture occupies a specific position in the broader MCU taxonomy: ARM Cortex-M -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. SAM4S devices extend the M-class core with Microchip peripherals such as the High-Speed USB 2.0 Full-Speed device/host/OTG controller, CAN, EMAC, and an external bus interface, targeting industrial automation, smart energy, and Human-Machine Interface (HMI) applications. Key features include 1 MB of dual-bank Flash (2x512 KB, supporting in-application programming), 160 KB SRAM, a flexible 16-channel 1 Msps ADC, two analog comparators, multiple timers, and a peripheral event system for hardware-triggered task chaining without CPU intervention. Cryptographic functions are accelerated by AES (256-bit) and True Random Number Generator hardware blocks. The high pin count and rich peripheral mix make this device well suited to gateway, data-logger, and motor-control applications that exceed the I/O budget of smaller Cortex-M0+ parts. Typical applications include industrial PLC and HMI control, smart-meter concentrators with CAN/USB connectivity, factory-automation sensor hubs, USB-CDC bridge firmware for PC peripherals, and motor-control inverter boards. The 100-ball TFBGA footprint is favored where PCB space is at a premium and where the higher lead-count alternative (LQFP-100) cannot fit. When designing with this part, allocate PCB real estate for both the TFBGA land pattern and the Xplained Pro board reference design; pay close attention to decoupling capacitor placement to keep VDDIO and VDDC noise under control at 120 MHz operation. This page consolidates distributor pricing, drop-in alternative MPNs, and practical design notes beyond what is found in the manufacturer datasheet, making it easier to compare the ATSAM4SD16CB-CNR against alternatives and place orders with confidence.

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ATSAM4SD32BA-AN - SAM4S 2MB Flash Cortex-M4 MCU | Microchip
ATSAM4SD32BA-AN

ATSAM4SD32BA-AN - SAM4S 2MB Flash Cortex-M4 MCU | Microchip

The Microchip ATSAM4SD32BA-AN is a 32-bit ARM Cortex-M4 microcontroller with DSP extensions, integrating 2048 KB of Flash and 160 KB of SRAM into a 64-pin LQFP package rated for the industrial temperature range. The part operates from a 1.62 V to 3.6 V supply, runs the Cortex-M4 core at up to 120 MHz, and exposes 47 GPIO lines alongside a rich set of peripherals including I2C, IrDA, Memory Card, SPI, SSC, UART/USART, and USB. On-chip system resources include brown-out detection, DMA, POR, PWM, and a watchdog timer. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and peripherals into one package. The Cortex-M4 architecture belongs to the ARMv7-M family and adds single-precision FPU and DSP instructions, while SAM4S devices extend this with high-speed USB 2.0 Full-Speed, an external bus interface, and a multi-layer bus matrix. In the broader taxonomy the ATSAM4SD32BA-AN sits within the SAM4S family, which is itself part of Microchip's Atmel-derived 32-bit portfolio of ARM Cortex-M microcontrollers. Key differentiating features include the 2 MB Flash (twice the capacity of the 1 MB SAM4S16 siblings), 120 MHz core clock, 47 GPIOs that survive 5 V tolerance, an on-chip full-speed USB 2.0 device/host controller, and a 16-bit external bus interface for off-chip memory expansion. The device is pin-to-pin and software compatible with SAM7S, SAM3N, and SAM3S Cortex-M3 parts, enabling straightforward upward migration for users who need more Flash or peripheral bandwidth. Architecturally the ATSAM4SD32BA-AN uses a Harvard-style multi-layer AHB bus matrix connecting the Cortex-M4 core to Flash, SRAM, and peripherals through dedicated masters, allowing simultaneous transfers with deterministic latency. The 120 MHz CPU, when paired with the integrated single-precision FPU and DSP MAC, delivers 150 DMIPS / 1.25 DMIPS/MHz and is well suited to closed-loop control and audio/signal processing without external DSP hardware. Typical applications include industrial automation controllers, USB human-interface devices (keyboards, mice, data loggers), smart-grid energy metering, motor control reference designs, building automation gateways, and consumer audio products. The combination of large Flash, ample SRAM, USB, and CAN-ready peripherals positions it as a flexible platform for both new designs and SAM3/SAM7 legacy migrations. When designing with this part, allocate at least four 0.1 uF decoupling capacitors around the supply pins, observe the VDDCORE pin decoupling requirements, and reserve the JTAG/SWD pins (TMS, TCK, TDI, TDO, NRST) for in-circuit programming. Software development is supported by Microchip Studio, MPLAB Harmony, and the SAM Software Framework, all of which include peripheral libraries and USB stacks. This page synthesizes distributor pricing, pin-compatible drop-in alternatives within the SAM4S family, and practical design notes not found in the manufacturer datasheet, helping engineers select and source the ATSAM4SD32BA-AN with full engineering context.

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ATSAM4SD32BA-ANR - 2MB Flash 120MHz Cortex-M4 MCU | Microchip
ATSAM4SD32BA-ANR

ATSAM4SD32BA-ANR - 2MB Flash 120MHz Cortex-M4 MCU | Microchip

The Microchip Technology ATSAM4SD32BA-ANR is a high-performance 32-bit ARM Cortex-M4 microcontroller based on the SAM4S family, integrating 2 MB of Flash and 160 KB of SRAM in a 64-pin LQFP package. The part runs up to 120 MHz with a single 1.2 V core supply and provides rich connectivity including USB Full-Speed, CAN, EMAC, HS MCI/SDIO, and multiple USART/SPI/TWI interfaces, making it suitable for connected industrial and consumer embedded designs. The SAM4S family is part of the Atmel/Microchip ARM Cortex-M4 microcontroller lineup. A Cortex-M4 MCU is a 32-bit processor core featuring DSP extensions, single-cycle MAC, hardware single-precision FPU, and a tightly-coupled NVIC for deterministic interrupt response. Within Microchip's portfolio it sits above Cortex-M0+ SAM D parts and below Cortex-M7 SAME70/SAMS70 parts, balancing high computational throughput (1.25 DMIPS/MHz, hardware FPU) with the peripheral richness needed for human-machine interface (HMI), connectivity bridges, and motor control front-ends. Key features of the ATSAM4SD32BA-ANR include up to 120 MHz CPU clock, 2 MB embedded Flash, 160 KB SRAM, a 12-bit ADC, two 12-bit DACs, USB 2.0 Full-Speed Device/Host, CAN 2.0A/B, 10/100 Ethernet MAC (EMAC), HSMCI for SD cards, and 8/16-bit external bus interface (EBI) for SRAM/NOR/NAND. The Cortex-M4 core's single-precision FPU accelerates floating-point DSP code, while the integrated sleep modes (Wait, Sleep, Backup with RTC) reduce active power for battery-friendly designs. The 64-LQFP package exposes most peripheral I/Os while remaining hand-solderable for prototypes. Typical applications include industrial HMI panels, HVAC controllers, USB peripherals and barcode scanners, point-of-sale terminals, smart metering, motor-control signal processors, building automation gateways, and connectivity bridges (USB-to-Ethernet, USB-to-CAN). The combination of 2 MB Flash and 160 KB SRAM supports rich graphic stacks (emWin, LVGL) without external memory. When designing with this MCU, choose LQFP-64 over QFN-64 variants for easier rework and breadboard prototypes; route the ERASE pin carefully because pulling it high at reset triggers a full chip erase. Decouple VDDCORE with 100 nF + 4.7 µF ceramic capacitors placed within 5 mm of the pin, and reserve the JTAG/SWD header footprint even in production designs for firmware recovery.

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ATSAM4SD32BA-AU - 120MHz Cortex-M4 MCU 2MB Flash | Microchip
ATSAM4SD32BA-AU

ATSAM4SD32BA-AU - 120MHz Cortex-M4 MCU 2MB Flash | Microchip

The Microchip (formerly Atmel) ATSAM4SD32BA-AU is an ARM Cortex-M4 microcontroller running at up to 120 MHz, integrating 2 MB of Flash and 160 KB of SRAM in a 64-pin LQFP (10x10 mm) package. It is part of the SAM4S family and targets industrial applications requiring deterministic 32-bit performance with on-board DSP extensions and a Memory Protection Unit (MPU). The part carries the industrial (-40C to +85C) operating temperature grade and is supplied in Tray packaging. A 32-bit ARM Cortex-M4 microcontroller is a member of the ARMv7-M architecture family, combining Thumb-2 instruction efficiency with single-cycle MAC, optional single-precision FPU, and DSP extensions for signal-processing workloads. Within Microchip's portfolio, the Cortex-M4 line sits above Cortex-M3 (e.g., SAM3S) and below Cortex-M7 (SAM E70/S70), targeting mid-range industrial, consumer, and connected-device designs that need deterministic real-time control plus signal processing without stepping up to higher-cost application processors. Key features of the ATSAM4SD32BA-AU include a multi-layer bus matrix with separate SRAM and peripheral bridges, a multi-channel Peripheral DMA Controller (PDC) plus a 16-channel Central DMA, an External Bus Interface (EBI) for SRAM/SDRAM expansion, and an extensive peripheral set: up to one USB 2.0 Full-Speed Device port, one FS Host/Device, up to two CAN ports, multiple USART/SPI/TWI, a 12-bit ADC (up to 24 channels), and one 12-bit DAC. An optional 2-Kbyte instruction cache reduces Flash wait-state pressure at 120 MHz. The part is pin-to-pin compatible with SAM3N, SAM3S, and SAM7S64/100-pin legacy devices, enabling upward migration without PCB rework. The LQFP-64 footprint also matches the SAM4S16/SAM4S8 siblings, so firmware can scale between flash densities (2 MB / 1 MB / 512 KB) without layout changes. The industrial grade and 1.2V/3.3V dual-voltage I/O make it broadly compatible with mixed-signal designs. Typical applications include industrial control (PLCs, motor drivers, sensor hubs), human-machine interface (HMI) panels, smart energy metering, building automation, and connected IoT gateways where USB Device/Host, CAN, and Ethernet MAC (via external PHY plus RMII) are required. The 2 MB Flash and 160 KB SRAM also support over-the-air firmware updates and graphical UI libraries. When designing with this device, ensure the 1.2V core is supplied by the internal voltage regulator and that VDDBU is present for RTC/RTT backup domain retention. Use the Atmel/Microchip SAM4S BSP and ASF/SAME70-S70 Studio framework; software written for SAM3S is largely source-compatible thanks to the shared peripheral set, easing migration. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in a single manufacturer datasheet.

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ATSAM4SD32BA-AUR - 120MHz Cortex-M4 MCU, 2MB Flash, 64-LQFP | Microchip
ATSAM4SD32BA-AUR

ATSAM4SD32BA-AUR - 120MHz Cortex-M4 MCU, 2MB Flash, 64-LQFP | Microchip

The Microchip Technology ATSAM4SD32BA-AUR is a 32-bit ARM Cortex-M4 microcontroller built on the SAM4S platform, delivering 120 MHz CPU performance with 2 MB of embedded Flash and 160 KB of SRAM in a 64-pin LQFP (10x10 mm) package. It integrates a Floating Point Unit (FPU) for single-precision DSP operations, a Multi-channel High-speed USB 2.0 Full-Speed Device/Host/OTG transceiver, and an extensive set of peripherals including up to five USART, three UART, two TWI (I2C), three SPI, one HS-SPI, an 8-channel 10-bit ADC, two 12-bit DAC outputs, and a 16-bit timer/counter block. The device operates from a 1.2V internal regulator fed by a single 1.62–3.6V external supply. A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory (Flash), working memory (SRAM), and configurable peripherals on a single die, providing a self-contained compute platform for embedded systems. ARM Cortex-M4 MCUs extend this with DSP instructions and optional single-precision FPU, positioning the family between classic Cortex-M3 controllers and Cortex-M7 application processors. The SAM4S series specifically targets industrial and consumer designs that need high code density, generous RAM, and USB connectivity without requiring an external MPU. Key features include 2 MB Flash (2M x 8) for application and bootloader storage, 160 KB SRAM split into 128 KB general-purpose plus 32 KB tightly-coupled, and a flexible 8-channel DMA controller with descriptor-based transfers. The integrated High-speed USB 2.0 device port with on-chip transceiver eliminates external PHY cost, while two CAN controllers and one Ethernet MAC (GMII-capable via MII/RMII) make the part suitable for connected industrial nodes. Hardware cryptographic acceleration is not present, but the Cortex-M4F core executes AES/SHA software routines efficiently. Architecture-wise, the ATSAM4SD32BA-AUR uses Atmel/Microchip's SAM4S pipeline with a 5-stage Cortex-M4 core running up to 120 MHz core / 150 MHz peripheral bus. The embedded Flash uses 128-bit-wide prefetch buffers with ECC-free storage for high throughput. The 1.2V internal core regulator is paired with brown-out detectors and a 12-bit windowed watchdog for functional-safety class B/C designs when used with Microchip's ASF software framework. Typical applications include industrial PLC I/O modules, USB-connected data loggers, point-of-sale terminals, CAN-gateway motor-control front-ends, and consumer white-goods HMI panels. Compared with smaller SAM4S siblings, the 2 MB Flash variant supports full embedded GUIs and over-the-air (OTA) bootloader schemes that require dual-bank storage. The LQFP-64 footprint is shared with most SAM4S/4SD parts, simplifying PCB layout when migrating memory options. When designing with this part, budget adequate decoupling on each VDDCORE/VDDIO pair, follow the 64-LQFP thermal pad layout recommendation, and review the bootloader section of the datasheet to leverage the SAM-BA ROM monitor for field upgrades. For absolute lowest BOM, designs must respect the 1.2V internal regulator decoupling requirement of at least 4.7 uF X7R on VDDOUT and a 0.1 uF on each VDDCORE pin. This page synthesizes distributor pricing, pin-compatible SAM4S family drop-ins, USB-equipped application companions, and practical EMC/ESD layout notes not consolidated in the manufacturer datasheet PDF.

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ATSAM4SD32BA-MU - 120MHz Cortex-M4 MCU 2MB Flash | Microchip
ATSAM4SD32BA-MU

ATSAM4SD32BA-MU - 120MHz Cortex-M4 MCU 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32BA-MU is a high-performance 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, delivering up to 120 MHz CPU clock speed with 2 MB of embedded Flash and 160 KB of SRAM in a 64-pin QFN (9x9 mm) package. It integrates a Memory Protection Unit (MPU), a 2 KB instruction cache, the Thumb-2 instruction set, and DSP extensions, enabling deterministic real-time control with signal-processing headroom for motor control, audio, and industrial-sensing applications. An ARM Cortex-M4 microcontroller is a 32-bit processor core based on the ARMv7-M architecture with single-cycle multiply-accumulate and optional single-precision floating-point hardware. It occupies the mid-performance tier of the Cortex-M family (between Cortex-M0+ and Cortex-M7) and is paired in the SAM4S line with peripheral subsystems such as 12-bit ADC, high-speed USB, CAN, EMAC, and flexible timers, making it a common drop-in choice for designers migrating from the Cortex-M3-based SAM3S series. The SAM4S family balances performance density and power efficiency. Key features include a multi-layer bus matrix with distributed SRAM for parallel DMA transfers, an integrated 12-bit 1 MSPS analog-to-digital converter with up to 24 channels, a high-speed USB 2.0 Full-Speed device/host port, two CAN 2.0A/B controllers, a 10/100 Ethernet MAC (EMAC) for networked designs, and an external bus interface (EBI) that supports SRAM, SDRAM, and NAND Flash expansion. Peripherals communicate with the core through two separate peripheral bridges plus a peripheral DMA controller (PDC) for low-CPU-overhead data movement. Architecture-wise, the ATSAM4SD32BA-MU uses a Harvard-bus layout with separate code and data buses, a tightly-coupled SRAM block that can be battery-backed for RTC retention, and a flexible power-saving controller with Idle, Sleep, and Backup modes. The 2 KB instruction cache accelerates Flash-resident code execution and reduces active power, while the multi-layer AHB matrix lets the CPU, DMA, and Ethernet MAC transfer data concurrently without starving one another. Typical applications include industrial PLCs, factory-automation controllers, point-of-sale terminals, smart energy metering, building-automation gateways, USB peripherals, CAN-node motor-control boards, and HVAC controllers. Its pin-to-pin compatibility with SAM3N, SAM3S, and SAM7S legacy 64-pin and 100-pin packages simplifies upgrades from older Atmel designs. When designing with this device, ensure the four power domains (VDDIN, VDDFLASH, VDDIO, VDDUTMI) are correctly sequenced and decoupled with 100 nF X7R ceramics adjacent to each pin. The supply voltage is 1.62 V to 3.6 V, and the integrated voltage regulator requires a 4.7 µF bulk capacitor on VDDCORE. This page synthesizes distributor pricing, drop-in alternatives, and application-level guidance not found in the standalone manufacturer datasheet.

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ATSAM4SD32BA-UUR - 2MB Flash Cortex-M4 MCU 64-WLCSP | Microchip
ATSAM4SD32BA-UUR

ATSAM4SD32BA-UUR - 2MB Flash Cortex-M4 MCU 64-WLCSP | Microchip

The Microchip Technology ATSAM4SD32BA-UUR is a 32-bit ARM Cortex-M4 microcontroller featuring 2MB of Flash memory and 160KB of SRAM, housed in a compact 64-ball WLCSP (Wafer Level Chip Scale Package) measuring 4.42 mm x 3.42 mm. It operates at up to 120 MHz with a single 1.2V core supply and supports 1.62V to 3.6V I/O, delivering 150 DMIPS performance with hardware FPU and DSP extensions. The device integrates 2KB instruction cache plus 1KB data cache, multi-layer bus matrix, peripheral DMA controller, and 16-bit External Bus Interface for memory expansion. A microcontroller (MCU) is a single-chip computer integrating a CPU core, memory (Flash/SRAM), and programmable peripherals. The Cortex-M4 belongs to the ARM Cortex-M family of 32-bit processor cores optimized for embedded deterministic real-time applications, supporting the Thumb-2 instruction set and featuring hardware single-precision floating-point. Within the SAM4S series, the ATSAM4SD32 variant represents the highest-memory member of the SAM4S16/SD32 sub-family, designed as a drop-in upgrade path from SAM3S Cortex-M3 devices. Key features include 2MB embedded Flash with unique 128-bit signature, 160KB SRAM with SRAM parity, a full-speed USB 2.0 Device port with embedded transceiver, up to two HS USB hosts, two CAN 2.0A/B controllers, three USARTs, two UARTs, two TWIs (I2C), two SPIs, one SSC, one HSMCI (SDIO), one 12-bit ADC up to 24 channels, one 12-bit DAC, and four 16-bit timers plus one PWM timer. Industrial-grade operating temperature range of -40C to +85C suits harsh-environment deployments. The architecture uses a multi-layer AHB bus matrix that allows parallel access between CPU, DMA, and peripherals, supporting high data-rate communication without bus contention. The integrated FPU accelerates signal-processing algorithms, and the DSP extensions provide single-cycle MAC instructions for audio and motor-control applications. Power consumption is minimized through Sleep, Wait-for-Event, Backup, and Shutdown modes managed by the on-chip Supply Controller (SUPC) and Real-Time Clock (RTC). Typical applications include industrial control panels, smart metering, barcode scanners, building automation gateways, USB peripherals and HID devices, CAN-node automotive subsystems, motor-control drives, point-of-sale terminals, and portable medical instrumentation. The compact WLCSP footprint makes it ideal for space-constrained wearables and IoT edge nodes. When designing with this device, allocate 4-layer PCB stackup with continuous ground plane under the WLCSP balls. Confirm thermal management for industrial-temperature operation since the small package has limited heat dissipation. Verify boot configuration pins (BMS, JTAGNSEL) at reset for the desired boot memory source. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, providing unique decision support for embedded engineers.

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ATSAM4SD32BB-AN - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip
ATSAM4SD32BB-AN

ATSAM4SD32BB-AN - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32BB-AN is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, featuring a 120 MHz core with 2 MB of Flash memory and 160 KB of SRAM, housed in a 64-pin LQFP (10x10 mm) package. It provides 47 user I/O pins and integrates a rich set of peripherals including DMA, PWM, brown-out detect/reset, watchdog timer, and a full-speed USB 2.0 interface. The operating voltage range covers 1.62 V to 3.6 V with an extended industrial temperature grade of -40C to +105C, and the device is supplied in Tray packaging. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and peripheral interfaces into one package. Within the broader semiconductor taxonomy, microcontrollers sit under embedded processors, alongside microprocessors and DSPs. ARM Cortex-M4 cores specifically add single-precision FPU and DSP extensions to the Cortex-M3 baseline, enabling efficient fixed-point and floating-point signal processing at low power. The SAM4S family from Microchip is positioned as a mainstream industrial MCU line that bridges cost-sensitive 8/16-bit designs with higher-performance 32-bit applications. The ATSAM4SD32BB-AN features a maximum clock speed of 120 MHz, hardware multiply-accumulate and divide instructions, and a Nested Vectored Interrupt Controller (NVIC) with deterministic interrupt response. Its 2 MB of embedded Flash is organized as 2 banks of 1024 KB each, enabling in-application programming while the other bank executes. The 160 KB SRAM is split into 128 KB of system SRAM plus 32 KB tightly coupled for peripheral DMA, allowing deterministic data throughput without arbitration stalls. Connectivity on the ATSAM4SD32BB-AN is broad: up to three USART/UART interfaces, two TWI (I2C-compatible) buses, two SPI interfaces, one SSC (Synchronous Serial Controller), IrDA support, USB 2.0 Full-Speed with on-chip transceiver, and a memory card interface (e.g., SD/MMC). On the analog side, the device integrates a 12-bit ADC, a 12-bit DAC, and an analog comparator. Up to eight 16-bit timer/counters support PWM, capture, and quadrature decoding for motor and power-control applications. Typical applications for the ATSAM4SD32BB-AN include industrial control and HMI panels, USB peripherals and HID devices, smart energy meters, motor control drives (BLDC, stepper, and PMSM via space-vector PWM), building automation nodes, and data loggers with SD card storage. The combination of large Flash, USB, and CAN-style peripherals also suits automotive body electronics and medical point-of-care instrumentation where deterministic real-time behavior is required. When designing with the ATSAM4SD32BB-AN, pay close attention to decoupling: place 100 nF ceramic capacitors as close as possible to every VDDCORE and VDDBU pin, and provide a 4.7 uF bulk capacitor on the main VDD rail. Use the on-chip voltage regulator carefully - the device requires the decoupling network described in the datasheet to maintain stable core voltage under dynamic load, and the NRST line should be pulled up with a 10 kohm resistor to VDDIO for reliable reset behavior. This page synthesizes distributor pricing, parametric drop-in alternatives, application guidance, and design notes not assembled in the manufacturer datasheet alone. Compared with raw distributor listings, XAIPART provides same-package cross-reference options, a comparison table highlighting differences versus alternatives, and AEO-optimized FAQ entries targeted at engineers evaluating this MCU for new designs.

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ATSAM4SD32BB-MN - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip
ATSAM4SD32BB-MN

ATSAM4SD32BB-MN - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32BB-MN is a 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz with 2 MB of embedded Flash and 160 KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with an exposed thermal pad. It belongs to the SAM4S family, integrates a Floating Point Unit (FPU) for single-precision DSP, and is rated for an industrial extended temperature range of -40C to +105C. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor core designed for embedded applications requiring deterministic real-time performance, low power consumption, and rich peripheral integration. The Cortex-M4 sits in the broader taxonomy of ARM cores (Cortex-M0/M0+/M3/M4/M7), and it adds DSP extensions and an optional single-precision FPU. The SAM4S family further augments this core with Microchip-specific peripherals, on-chip memory, and power management, placing the part in the hierarchy microcontroller -> embedded MCU -> 32-bit MCU -> ARM Cortex-M4 MCU -> semiconductor. Key features include 2 MB Flash, 160 KB SRAM, a high-speed Multi-bit ECC-protected Flash controller, a 12-bit ADC and 12-bit DAC, USB 2.0 Full-Speed with on-chip transceiver, up to five USART/UART channels, three TWI (I2C) interfaces, two SPI interfaces, an external bus interface (EBI), and a 16-bit Static Memory Controller. The QFN-64 (9x9 mm) package provides excellent thermal performance for high-MIPS workloads and supports industrial-grade designs requiring robust mechanical mounting. At 120 MHz, the SAM4SD32 delivers up to 150 DMIPS / 1.25 DMIPS/MHz with single-cycle MAC and SIMD instructions. Revision B silicon improves low-power run-mode current and adds additional brown-out detection levels compared to Revision A, which is why Microchip recommends Revision B for all new designs. Typical applications include industrial control, building automation, smart energy metering, USB peripherals, point-of-sale terminals, machine-to-machine (M2M) gateways, and consumer audio/HMI products. The 2 MB Flash makes it ideal for full-featured protocol stacks (USB, CAN, ZigBee, or Bluetooth HCI) plus an RTOS and a GUI. Designers should also evaluate SAM4S siblings with smaller flash (ATSAM4SD16B, ATSAM4SD8B) for cost-sensitive variants. When designing with this device, ensure the exposed pad (EP) is soldered to a properly sized ground copper pour to meet the 31.5 C/W thermal resistance and to provide a low-inductance ground return. Decouple VDDIO and VDDCORE with 100 nF + 4.7 uF ceramics placed as close as possible to the respective pins. This page synthesizes distributor pricing, drop-in same-package alternatives from Microchip's SAM4S family, comparison parameters, and practical design notes not found on a single distributor listing.

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ATSAM4SD32BB-MNR - SAM4S Cortex-M4 120MHz 2MB MCU 64-QFN | Microchip
ATSAM4SD32BB-MNR

ATSAM4SD32BB-MNR - SAM4S Cortex-M4 120MHz 2MB MCU 64-QFN | Microchip

The Microchip Technology ATSAM4SD32BB-MNR is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, featuring a 120 MHz core with FPU, 2 MB of Flash, and 160 KB of SRAM, housed in a 64-pin QFN (9x9 mm) package with exposed thermal pad. The "BB" suffix denotes Revision B silicon and the "-MNR" suffix specifies the 64-QFN industrial-temperature, Tape & Reel variant. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash and SRAM), and programmable peripherals. Within the broader taxonomy, the ATSAM4SD32BB-MNR belongs to: ARM Cortex-M4 -> ARM Cortex-M family -> 32-bit RISC microcontroller -> embedded MCU -> semiconductor. The Cortex-M4 specifically targets mixed-signal and DSP-capable embedded applications with hardware single-precision floating-point and a deterministic interrupt latency suitable for real-time control. Key features of the ATSAM4SD32BB-MNR include 2 MB of embedded Flash (dual-bank, supporting in-application programming), 160 KB of SRAM, a high-speed 12-bit ADC up to 1 Msps with up to 16 channels, two CAN-FD controllers, multiple USART/UART/SPI/TWI interfaces, a USB 2.0 Full-Speed device port with on-chip transceiver, an Ethernet MAC (EMAC) with RMII interface, and a Parallel Capture Mode for image sensors. The 120 MHz Cortex-M4 with FPU delivers 150 DMIPS and 1.25 DMIPS/MHz, enabling DSP-class signal processing in floating-point. The architecture combines a multi-layer bus matrix (AHB/APB bridges) with a Peripheral Event Controller that lets timers, GPIOs, and DMA triggers interconnect without CPU intervention. Power management includes a low-power RTC domain, a 1.2 V core LDO with sleep/backup modes, and a 3.3 V operating range from a single supply. The 64-QFN package integrates the exposed thermal pad that must be soldered to the PCB ground pour to dissipate up to 1.5 W typical industrial power. Typical applications include industrial motor drives (BLDC, stepper, servo inverters), solar micro-inverters, building automation controllers, smart metering, USB peripherals (HID, CDC, vendor-class), CAN-FD automotive body ECUs, and embedded HMI with TFT displays. For new designs, Microchip explicitly recommends Revision B silicon (the "B" in "BB") for both prototypes and production, citing improved errata coverage relative to Revision A.

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ATSAM4SD32BB-UUR - 2MB Flash Cortex-M4 MCU | Microchip
ATSAM4SD32BB-UUR

ATSAM4SD32BB-UUR - 2MB Flash Cortex-M4 MCU | Microchip

The Microchip Technology ATSAM4SD32BB-UUR is a 32-bit ARM Cortex-M4 microcontroller with FPU, integrating 2048 KB of flash and 160 KB of SRAM in a 64-ball WLCSP/UFBGA package. It belongs to the SAM4SD family of Cortex-M4 microcontrollers that scale from 1 MB to 2 MB flash, targeting industrial-grade embedded applications. The device operates up to 120 MHz with a hardware single-precision FPU and a Cortex-M4 core featuring DSP extensions, delivering 1.25 DMIPS/MHz and hardware MAC support. What is a Cortex-M4 microcontroller? A Cortex-M4 MCU is a 32-bit RISC processor core designed by Arm for embedded applications requiring deterministic real-time control combined with efficient digital signal processing. The M4 core introduces a hardware single-precision floating-point unit (FPU), single-cycle MAC instructions, and an optional SIMD engine, while preserving the deterministic interrupt behaviour of the Cortex-M family. In the broader taxonomy it sits between Cortex-M0+ (lowest power, smallest area) and Cortex-M7 (highest performance) within the Cortex-M series, and is widely used in industrial automation, motor control, audio processing and human-machine-interface designs. The ATSAM4SD32BB-UUR integrates a rich set of peripherals including a high-speed USB 2.0 Full-Speed device/host port with on-chip PHY, a 10/100 Ethernet MAC, two CAN controllers, two I2C, three UART/USART, two SPI, one HS-SPI, an external bus interface, a 12-bit 1 Msps ADC, two 12-bit DACs, and a 4-channel 16-bit timer/counter block. Cryptographic hardware accelerators are present through the SAM4SD's peripheral set, and the part supports external NAND flash via the EBI for systems requiring additional non-volatile storage. Typical applications for this device include industrial control and HMI panels, building automation gateways, USB peripherals and human-interface devices, motor-control front-ends, and energy-metering platforms. The combination of large SRAM (160 KB), high-speed ADC, hardware FPU, and USB makes it well-suited for protocol-conversion bridges and graphics-touch gateways. The industrial temperature grade of -40C to +85C and the compact WLCSP package support space-constrained industrial designs that demand both high compute density and robust thermal behaviour. When designing with this part, pay special attention to the WLCSP/UFBGA 64-ball package which requires a 4-layer or 6-layer PCB with laser-drilled micro-vias to route signals from the bottom side. The internal 1.2V LDO must be decoupled with low-ESR ceramics close to the VCORE pins, and a precise 12 MHz crystal is recommended for USB Full-Speed compliance. This page synthesizes distributor pricing, drop-in same-family alternates, and practical PCB/design notes that go beyond the manufacturer datasheet to support rapid design-in and second-source qualification.

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ATSAM4SD32CA-AN - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip
ATSAM4SD32CA-AN

ATSAM4SD32CA-AN - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32CA-AN is a 32-bit ARM Cortex-M4 RISC microcontroller running at up to 120 MHz, with 2 MB of Flash program memory and 160 KB of SRAM, housed in a 100-pin LQFP package. The device integrates extensive connectivity including USB 2.0 Full-Speed, up to three USART/UART channels, two I2C, two SPI, an SSC for audio/I2S, plus EBI/EMI for external memory and a memory card interface. Industrial peripherals include brown-out detection, DMA, PWM timers, POR and a watchdog timer. An ARM Cortex-M4 microcontroller is a 32-bit core that combines Thumb-2 instruction efficiency with single-cycle MAC DSP extensions and an optional single-precision FPU. Within the Microchip SAM4S family hierarchy, the part belongs to the Cortex-M4 Flash MCU class and extends upward to the broader category of 32-bit embedded microcontrollers and ultimately to integrated circuits. Designers choose Cortex-M4 for deterministic real-time control with DSP capability at lower power and cost than Cortex-M7 parts. Key features that differentiate the ATSAM4SD32CA-AN include 2 MB Flash (2M x 8) for ample code and data storage, 160 KB SRAM for stack and buffers, 79 programmable I/O lines, and the SAM4S peripheral set. The 100-pin LQFP footprint exposes the full peripheral set while remaining hand-solderable, and the 1.62V to 3.6V supply range allows single-Li-ion or 3.3V system-rail operation. A 120 MHz core clock plus the Cortex-M4 DSP extensions enable signal processing in firmware without an external DSP. Typical applications include industrial control nodes, consumer appliances with USB device interfaces, smart metering, point-of-sale terminals, and PC peripherals. The combination of 2 MB Flash, USB, and the SAM4S peripheral mix makes the part a fit for connected embedded designs that previously required a separate MCU and memory-expansion device. When designing with this device, ensure the LQFP-100 PCB land pattern matches the standard 14x14 mm body with 0.5 mm pitch. Provide a 1 uF plus 100 nF decoupling pair close to each VDDCORE and VDDIO pin, and follow the SAM4S errata sheet for any specific revision workarounds. Software development is supported through MPLAB X IDE, Atmel Studio, and ASF drivers. This page combines verified distributor pricing, parametric cross-reference data, and application guidance for engineers evaluating the ATSAM4SD32CA-AN against SAM4S family siblings and competitor Cortex-M4 MCUs.

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ATSAM4SD32CA-ANR - 120MHz Cortex-M4 MCU 2MB Flash | Microchip
ATSAM4SD32CA-ANR

ATSAM4SD32CA-ANR - 120MHz Cortex-M4 MCU 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32CA-ANR is a 32-bit ARM Cortex-M4 microcontroller in the SAM4S family, running at up to 120 MHz with 2 MB of embedded Flash and 160 KB of SRAM, housed in a 64-pin LQFP (10x10 mm) package. It integrates a Floating Point Unit (FPU), a high-speed Multi-port SRAM, and a flexible bus matrix, providing deterministic real-time performance for industrial and consumer embedded designs. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die. The Cortex-M4 core is a 32-bit processor widely adopted across industrial, IoT, and motor-control applications because it combines Thumb-2 instruction efficiency with DSP extensions and an optional single-precision FPU. The SAM4S series, built around this core, sits within Microchip's portfolio of mainstream ARM Cortex-M microcontrollers and is typically chosen when deterministic interrupt latency, large on-chip Flash (>= 1 MB), and a rich peripheral set (USB FS, CAN, Ethernet MAC, HS SDIO/MMC, multiple UART/SPI/TWI, ADC, PWM) are required in one device. Key features of the ATSAM4SD32CA-ANR include a maximum core clock of 120 MHz, 2 MB (2M x 8) Flash program memory, 160 KB SRAM, a full-speed USB 2.0 device/host controller, a 10/100 Ethernet MAC, a CAN controller, a high-speed SDIO/MMC interface, up to 47 user I/O lines, and multiple 16-bit timers plus a 12-bit ADC. The integrated FPU accelerates single-precision floating-point math, while the on-chip voltage regulator and Power-on Reset reduce external BOM. A 64-pin LQFP package offers an easy-to-assemble, hand-solderable footprint suitable for prototypes and mid-volume production. Architecturally, the SAM4S uses a multi-layer AHB bus matrix that allows simultaneous accesses to Flash, SRAM, and peripherals without contention. The Flash controller incorporates a 128-bit-wide prefetch buffer and a write buffer, allowing the Cortex-M4 to execute code from Flash with zero-wait-state performance at up to 120 MHz under specified conditions. Peripherals are connected via separate peripheral bridges so that DMA activity does not stall CPU code fetches. Typical applications include industrial automation controllers (PLC modules, sensor hubs, smart gateways), human-machine interface (HMI) panels, USB peripherals (data loggers, mass-storage devices, CDC + HID bridges), CAN node interfaces in vehicles or factory equipment, and motor-control boards that benefit from the FPU for field-oriented control (FOC) loops. The integrated Ethernet MAC also makes the part a fit for low-cost networked embedded nodes. When designing with the ATSAM4SD32CA-ANR, pay attention to decoupling: place a 100 nF X7R ceramic plus a 4.7 uF bulk capacitor close to each VDDCORE and VDDBU supply pin. The 64-pin LQFP has a thermal pad-free design, so the die dissipates heat mainly through the package leads; however, at industrial temperatures (-40 C to +85 C) and 120 MHz operation, modest copper pour is sufficient. This page synthesizes distributor stock, drop-in pin-compatible alternatives, and practical PCB/thermal design notes not found in the manufacturer datasheet alone.

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ATSAM4SD32CA-AUR - 120MHz Cortex-M4 MCU 2MB Flash | Microchip
ATSAM4SD32CA-AUR

ATSAM4SD32CA-AUR - 120MHz Cortex-M4 MCU 2MB Flash | Microchip

The Microchip ATSAM4SD32CA-AUR is a high-performance 32-bit ARM Cortex-M4 microcontroller based on the SAM4S core, delivering 120 MHz CPU clock speed with 2 MB of embedded Flash and 160 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. The Cortex-M4 core specifically adds a single-precision FPU, DSP extensions, and a Memory Protection Unit (MPU), positioning it in the 32-bit embedded hierarchy above Cortex-M0/M0+ and below Cortex-M7. The SAM4S family sits in Microchip's mid-range MCU lineup, between the lower-pin-count SAM D20/D21 and the higher-performance SAME70/SAMS70 lines. Microcontrollers in this class are typically used as the central processing element in industrial control, IoT edge nodes, and human-machine interface (HMI) products. Key features of the ATSAM4SD32CA-AUR include 2 MB Flash with 16 KB user signature page, 160 KB SRAM organized across Tightly Coupled Memory (TCM) and system bus regions, a Multi-layer Bus Matrix with separate peripheral and DMA channels, and up to 24 DMA channels. Communication peripherals include high-speed USB 2.0 Full-Speed with on-chip transceiver, up to three USARTs, two UARTs, two TWI (I2C) controllers, two SPI controllers, and an I2S interface. Analog peripherals include a 12-bit ADC with up to 16 channels and a 12-bit DAC. The device operates from 1.62 V to 3.6 V. Typical applications for the ATSAM4SD32CA-AUR include industrial automation controllers, building automation gateways, smart energy meters, point-of-sale terminals, and connected HMI panels. The high Flash density and USB Full-Speed make it particularly attractive for products that require firmware over-the-air (FOTA) staging or local diagnostic logging, while the 12-bit ADC supports sensor aggregation. Design consideration: the on-chip voltage regulator requires a stable 3.3 V supply; add 100 nF + 4.7 µF decoupling near VDDCORE and 100 nF on every VDDIO pin. The 100-pin LQFP footprint is shared with most ATSAM4S/4SD family members, simplifying board reuse across variants.

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ATSAM4SD32CA-CFU - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip
ATSAM4SD32CA-CFU

ATSAM4SD32CA-CFU - 120MHz Cortex-M4 MCU, 2MB Flash | Microchip

The Microchip (formerly Atmel) ATSAM4SD32CA-CFU is a high-performance 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, featuring 2MB of Flash and 160KB of SRAM, operating at up to 120 MHz core clock, and housed in a 100-pin VFBGA package (7x7 mm). It integrates a high-speed USB 2.0 Full-Speed interface, dual CAN controllers, up to 5 UART/USART, 3 TWI (I2C-compatible), an external bus interface, and a 12-bit ADC, making it a single-chip solution for connected embedded systems. A Cortex-M4 microcontroller is a 32-bit processor core based on the ARMv7-M architecture that combines deterministic interrupt response with DSP extensions (single-cycle MAC) and an optional single-precision FPU. Within the broader taxonomy, this places the SAM4S family under the MCU > microcontroller > embedded processor > semiconductor hierarchy. The Cortex-M4 lineage was introduced by ARM in 2010 to target mixed signal control and DSP workloads, and Microchip's SAM4S implementation layers a rich peripheral set and low-power modes around the core for industrial, consumer, and IoT applications. Key features include a 1.25 DMIPS/MHz core with hardware multiplier and single-cycle MAC, dual-bank Flash with security bit and 128-bit unique ID, multi-layer AHB bus matrix, and the SAM4S Peripheral Event System for low-latency hardware-triggered tasks. The device supports 1.62V to 3.6V operation with an integrated voltage regulator, and offers Sleep, Wait, and Backup modes with fast wake-up for power-constrained designs. The 12-bit ADC reaches up to 1 Msps and pairs well with the chip's hardware-triggered timers. Typical applications include industrial automation and PLC I/O, USB peripherals, CAN-based automotive body and automotive clusters, smart energy metering (smart meters), consumer audio and human-machine interface panels, and home automation gateways. The wide memory configuration (2MB Flash + 160KB SRAM) also fits well into embedded Linux-adjacent workloads such as gateway firmware, secure boot, and OTA upgrade handlers. When designing with this part, ensure PCB layout routes the VFBGA 0.65 mm pitch on inner layers with appropriate microvia stackups and provides a solid GND plane under the exposed die pad for thermal dissipation. The integrated voltage regulator requires a 10 uF bulk capacitor on VDDOUT, and decoupling must follow Microchip's SAM4S hardware design guide.

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ATSAM4SD32CA-CFUR - 120MHz Cortex-M4 2MB Flash MCU | Microchip
ATSAM4SD32CA-CFUR

ATSAM4SD32CA-CFUR - 120MHz Cortex-M4 2MB Flash MCU | Microchip

The Microchip (formerly Atmel) ATSAM4SD32CA-CFUR is a high-performance 32-bit ARM Cortex-M4 microcontroller running at up to 120 MHz, with 2 MB of Flash and 160 KB of SRAM, packaged in a 100-ball VFBGA (7x7 mm). It belongs to the SAM4S family and integrates a multi-layer bus matrix, a multi-channel DMA controller, and distributed memory architecture to sustain high data-rate peripheral I/O. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals (timers, communication interfaces, ADCs). Cortex-M4 cores add single-cycle DSP and a single-precision FPU, allowing cost-effective signal-processing workloads. The SAM4S series sits in Microchip's mid-performance MCU tier above Cortex-M0+ parts and below Cortex-M7 high-end families, targeting industrial control, smart energy, and connected sensor applications. Key features of the ATSAM4SD32CA-CFUR include 2 MB on-chip Flash (organized as 2M x 8), 160 KB SRAM, a 16-bit External Bus Interface (EBI) for SRAM/NOR/NAND expansion, a high-speed USB 2.0 Full-Speed (12 Mbps) Device with on-chip PHY, and a 10/100 Ethernet MAC with MII/RMII interface. The part operates from 1.2 V core / 3.3 V I/O rails, and integrates advanced touch sensing (QTouch), a 12-bit ADC, and a hardware cryptographic engine for AES and secure boot. Designed for industrial-grade reliability, the device supports an ambient temperature range of -40 C to +85 C and is RoHS-compliant. The VFBGA-100 7x7 mm package is footprint-compatible with other SAM4S VFBGA variants, enabling PCB reuse when scaling flash or peripheral mix. Pin-to-pin and software compatibility with the SAM3S Cortex-M3 family provides a smooth upgrade path for performance gains without firmware redesign. Typical applications include industrial automation controllers, smart grid and metering endpoints, point-of-sale terminals, HVAC controls, and USB/Ethernet-connected sensor hubs. Its DSP instructions and FPU also suit audio front-end processing and motor-control loops using PWM plus ADC triggering. When designing with this part, allocate careful PCB layout for the VFBGA-100 footprint: 0.5 mm ball pitch requires microvia HDI stack-up and X-ray or rework-station assembly. Decouple every VDD18/VDD33 pin pair with 100 nF ceramic plus bulk 4.7 uF, and provide a low-impedance ground plane under the BGA for thermal dissipation (theta_JA around 25 C/W on a 4-layer JEDEC test board). This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design guidance for the ATSAM4SD32CA-CFUR, sourced from Microchip's SAM4S datasheet and live distributor inventories.

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ATSAM4SD32CA-CU - 120MHz Cortex-M4 MCU 2MB Flash 100-TFBGA | Microchip
ATSAM4SD32CA-CU

ATSAM4SD32CA-CU - 120MHz Cortex-M4 MCU 2MB Flash 100-TFBGA | Microchip

The Microchip ATSAM4SD32CA-CU is a 32-bit ARM Cortex-M4 microcontroller running up to 120 MHz with 2 MB of embedded Flash and 160 KB of SRAM, housed in a 100-ball TFBGA (9x9 mm) package with industrial temperature grade. It belongs to the SAM4S family and integrates a 2 KB instruction cache, Memory Protection Unit (MPU), single-precision hardware Floating Point Unit (FPU), DSP instruction extensions, and a Thumb-2 instruction set that preserves code density while sustaining high code-throughput performance. A microcontroller (MCU) is a single-chip computer that combines a CPU core, non-volatile program memory (Flash), volatile working memory (SRAM), and a rich set of on-chip peripherals (timers, communication controllers, ADCs, etc.) into one package. The Cortex-M4 lineage places the SAM4S as a deterministic real-time MCU that targets signal-processing and connectivity-rich embedded systems. Within the broader taxonomy, the SAM4S sits in the hierarchy: Cortex-M4 -> ARM Cortex-M family -> 32-bit MCU -> microcontroller -> embedded IC -> semiconductor device. Key features include 2 MB of dual-bank Flash supporting read-while-write operation, 160 KB SRAM with flexible bus matrix, multi-channel DMA, full-speed USB 2.0 device/host/OTG, two CAN controllers, three USARTs, two UARTs, two TWIs, two SPIs, one 10-bit ADC (up to 16 channels and 1 MSps), an SD/MMC interface, a 16-bit timer/counter block, and a real-time clock with calendar. The device is pin-to-pin compatible with SAM3N, SAM3S, and SAM7S legacy 64/100-pin versions, allowing an easy drop-in upgrade path. Operating voltage spans 1.62 V to 3.6 V, suiting single-cell Li-ion or 3.3 V regulated rails. Typical applications include industrial control boards, smart energy metering, motor drive front-ends, building automation gateways, USB peripherals, and consumer devices requiring DSP-class DSP-ready signal processing. The combination of Cortex-M4 DSP extensions and the integrated FPU enables audio decoding, sensor-fusion DSP routines, and modest DSP workloads without a separate DSP chip. A key design consideration is bus-matrix bandwidth at high peripheral activity - place time-critical ISRs in SRAM and avoid blocking DMA paths when running high-throughput USB or Ethernet stacks. To preserve regulator headroom, design with a 3.3 V LDO that has at least 100 mA of burst capacity for ADC + USB peaks. This page synthesizes the verified distributor pricing, drop-in alternatives, and practical design notes that are not assembled in any single manufacturer datasheet.

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ATSAM4SD32CA-CUR - 120MHz Cortex-M4 MCU 2MB Flash | Microchip
ATSAM4SD32CA-CUR

ATSAM4SD32CA-CUR - 120MHz Cortex-M4 MCU 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32CA-CUR is a 32-bit ARM Cortex-M4 microcontroller in the SAM4S family, operating at up to 120 MHz with 2 MB of embedded Flash and 160 KB of SRAM, housed in a 100-ball 9x9 mm TFBGA package supplied on Tape & Reel. It integrates a single-precision Floating Point Unit, a high-speed 16-bit ADC, USB 2.0 Full-Speed with on-chip PHY, multiple UART/SPI/TWI/I2S interfaces, and an External Bus Interface for memory expansion, making it a complete system-on-chip for connected embedded designs. A microcontroller (MCU) is an integrated circuit that combines a processor core, program and data memory, peripherals, and I/O on a single silicon die. ARM Cortex-M4 cores implement the Thumb-2 instruction set with hardware single-cycle multiply and optional single-precision FPU, fitting between Cortex-M0+ (lowest power) and Cortex-M7 (highest performance) in the Cortex-M hierarchy. Within power-management IC taxonomy, MCUs belong to the broader category of embedded processors / microcontrollers, sitting alongside DSPs, FPGAs, and application processors. Key features of the ATSAM4SD32CA-CUR include its 120 MHz maximum CPU clock, single-cycle DSP MAC instructions, 2 MB Flash with security and secure boot, 160 KB SRAM (plus 2 KB backup SRAM), and 1.2 V internal core voltage supplied by an on-chip voltage regulator from a single 1.62-3.6 V external supply. The device provides up to 79 GPIO, up to 25 communication channels (USART, SPI, TWI), and a 10/100 Ethernet MAC with MII/RMII interface. The architecture uses a multi-layer AHB bus matrix with separate bridges for code and data, eliminating contention between CPU and DMA. A peripheral DMA controller (PDC) with up to 24 channels enables zero-CPU-overhead data movement between peripherals and memory. The on-chip Flash is mapped at 0x00400000 and supports in-application programming via the SAM-BA bootloader. Typical applications include industrial control (PLC, motor drives, HMI), consumer audio (USB speakers, headphones, audio docks), smart energy metering, building automation gateways, and connected IoT edge nodes requiring USB connectivity. The combination of 2 MB code space and high-speed ADC also suits data-acquisition loggers and portable instrumentation. Design consideration: the 100-ball TFBGA requires a 4-layer PCB minimum with matched-length impedance control on USB/Ethernet differential pairs; place decoupling capacitors (100 nF + 4.7 µF) within 2 mm of every VDD pin to meet IEC 61967 EMI margins. This page synthesizes XAIPART distributor pricing, drop-in same-package alternatives from the SAM4S and SAM4S16A families, and design notes not found in the manufacturer datasheet.

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ATSAM4SD32CB-AN - 2MB Flash Cortex-M4 MCU 100-LQFP | Microchip
ATSAM4SD32CB-AN

ATSAM4SD32CB-AN - 2MB Flash Cortex-M4 MCU 100-LQFP | Microchip

The Microchip Technology ATSAM4SD32CB-AN is a 32-bit ARM Cortex-M4 RISC microcontroller featuring 2MB of embedded Flash, 160KB of SRAM, and a maximum CPU clock of 120 MHz, housed in a 100-pin LQFP (14x14 mm) package. It integrates a full-speed USB Device port with embedded transceiver, a 10/100 Ethernet MAC (GMAC), and a rich set of peripherals including up to five USARTs, five UARTs, two TWIs, three SPIs, an 8-channel 10-bit ADC, a 16-bit PWM, and a 16-bit timer/counter block. An ARM Cortex-M4 microcontroller is a 32-bit RISC processor core designed by Arm that includes a single-precision IEEE 754 floating-point unit (FPU), a Memory Protection Unit (MPU), and DSP extensions. Within Microchip's broader hierarchy it sits under the SAM family -> SAM4S sub-family -> ARM Cortex-M4 series, occupying a position aimed at high-performance industrial and consumer embedded designs where deterministic control and connectivity coexist. Key features of the ATSAM4SD32CB-AN include dual-bank Flash for in-application reprogramming, a unique 128-bit serial number, a true random number generator (TRNG), and Cryptography accelerators (AES, TDES). The part is rated for the extended industrial temperature range up to +105C, and uses a 1.2V core supply. It is pin-compatible with the rest of the SAM4S family (SAM4S2/4/8/16/32) in the same 100-LQFP outline, allowing design scalability. Architecturally, the SAM4SD32 pairs the Cortex-M4 core with a multi-layer bus matrix that gives the CPU, DMAC, and peripherals simultaneous access to Flash and SRAM, eliminating contention. The dual-bank Flash and the peripheral event system enable deterministic interrupt latency and zero-latency interrupt responses, which are critical for motor control, power conversion, and real-time communications. Typical applications include industrial control and HMI, USB peripherals and HID devices, smart energy metering, point-of-sale terminals, barcode scanners, and machine-to-machine (M2M) gateways. The combination of USB, Ethernet, and Cortex-M4 DSP capability also makes it attractive for audio processing nodes and low-cost PLCs. When designing with this device, ensure that the 1.2V core rail is decoupled close to the VDD pins and that the external reset circuit meets the datasheet's minimum reset pulse width. The flash dual-bank layout also requires that bootloader and application boundaries are planned early. This page synthesizes distributor pricing, pin-to-pin compatible SAM4S family alternatives, and practical design notes not consolidated on the manufacturer product page.

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ATSAM4SD32CB-CFN - 120MHz Cortex-M4 MCU 2MB Flash | Microchip
ATSAM4SD32CB-CFN

ATSAM4SD32CB-CFN - 120MHz Cortex-M4 MCU 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32CB-CFN is a 32-bit ARM Cortex-M4 microcontroller from the SAM4S family, delivering up to 120 MHz core performance with 2 MB of embedded Flash and 160 KB of SRAM, packaged in a 100-ball 7x7 mm VFBGA. The device integrates a single-precision Floating Point Unit (FPU), a Memory Protection Unit (MPU), and up to 4 Kbytes of cache, providing a balanced combination of computational density and deterministic real-time response. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (SRAM), and a rich set of peripherals (timers, communication controllers, ADCs, GPIOs). The ARM Cortex-M4 is a 32-bit RISC core with DSP extensions and an optional FPU, purpose-built for embedded deterministic control in cost- and power-sensitive applications. The SAM4S family extends this core with Microchip-specific peripherals (HS USB, EMAC, CAN, SSC) and aims at industrial, consumer, and connectivity-enabled embedded designs. Key features of the ATSAM4SD32CB-CFN include 2 MB dual-bank Flash, 160 KB SRAM, full-speed USB Device port with on-chip transceiver, up to 16 peripheral DMA channels, 12-bit ADC, two 16-bit timers, and up to five USART, three SPI, and two TWI (I2C-compatible) interfaces. An integrated 32-bit real-time timer and a 128-bit unique device ID are also provided. The Cortex-M4 core with FPU executes Thumb-2 instructions and DSP blocks at up to 1.25 DMIPS/MHz, allowing digital signal processing workloads to share the same MCU that performs supervisory control. The architecture uses a multi-layer bus matrix connecting the Cortex-M4 core, Flash controller, SRAM, and peripheral bridges, minimising contention under concurrent DMA transfers. The 100-ball VFBGA (7x7 mm, 0.65 mm pitch) supports compact layouts for space-constrained designs and provides ample GPIO for parallel buses and high-pin-count peripherals. The 1.2 V internal core is regulated from a single 1.62 V to 3.6 V external supply, simplifying power-tree design. Typical applications include industrial control and Human-Machine Interface (HMI) panels, smart energy metering, USB peripherals (data loggers, HID devices), point-of-sale terminals, building automation gateways, and consumer audio/connectivity hubs. The combination of Cortex-M4 DSP, USB, and large Flash suits firmware-upgradable field devices with on-device signal conditioning. When migrating existing SAM4S designs, verify revision status: the manufacturer datasheet recommends Revision B silicon for new prototypes and production. Footprint-compatible lower-density SAM4S variants (SAM4SD16, SAM4SA16, SAM4S16, SAM4S8, SAM4S4) share the same 100-ball VFBGA pad map and pinout, simplifying capacity scaling without PCB rework. This page synthesises distributor pricing, drop-in compatible SAM4S variants, and practical design notes that supplement the manufacturer datasheet with sourcing and replacement context.

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ATSAM4SD32CB-CN - SAM4S ARM Cortex-M4 MCU 120MHz 2MB Flash | Microchip
ATSAM4SD32CB-CN

ATSAM4SD32CB-CN - SAM4S ARM Cortex-M4 MCU 120MHz 2MB Flash | Microchip

The Microchip Technology ATSAM4SD32CB-CN is an ARM Cortex-M4 SAM4S microcontroller integrating 2MB of Flash and 160KB of SRAM, operating at up to 120 MHz core clock, and housed in a 100-ball TFBGA (9x9 mm) package. The device is the production revision B of the SAM4SD32 family and is rated for the extended industrial temperature range (-40C to +85C). A 32-bit MCU (microcontroller) is a single-chip computer that integrates a processor core, program memory (Flash), data memory (SRAM), and a rich set of peripherals on one die. Microcontrollers sit within the broader taxonomy of microprocessors -> embedded processors -> microcontrollers -> ARM Cortex-M microcontrollers. The Cortex-M4 core additionally provides a single-precision FPU and DSP extensions, making the SAM4S suitable for signal-processing tasks in addition to conventional control. Key features of the ATSAM4SD32CB-CN include a full-speed USB Device port with embedded transceiver, up to two HS USB hosts/device/OTG capable ports in the family, a 16-bit static memory controller for external NAND Flash / NOR / SDRAM, dual 16-bit ADC and a 12-bit DAC, multiple UART/USART, TWI (I2C), SPI, SSC, and an on-chip temperature sensor. The dual-bank Flash with cache memory accelerates code execution from on-chip storage, while the integrated voltage regulator supports single-supply operation from a 1.62V to 3.6V source (with separate I/O and core domains). Architecturally the SAM4S combines an M-class core with a Multi-layer Bus Matrix and dedicated peripheral DMA channels that enable parallel data movement between peripherals, SRAM, and Flash without CPU intervention. Revision B (the -CB- suffix) fixes silicon errata and is Microchip's recommended variant for new designs over revision A. Typical applications include industrial control and HMI panels, USB-connected peripherals such as data loggers and POS terminals, smart energy metering, building automation gateways, and motor-control front-ends. The dual ADC channels and DSP extensions make it well suited to closed-loop feedback control where firmware implements PID or field-oriented motor control algorithms. When designing with this device, pay close attention to the decoupling network: place a 100 nF X7R 0402 next to every VDD/VDDIO ball pair, add a bulk 4.7 uF tantalum or ceramic at the regulator output, and keep the 32.768 kHz crystal traces short with a guarded ground plane to avoid RTC drift.

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