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AT91RM9200-CJ-002 - ARM920T MCU 180MHz 128KB ROM BGA-256 | Microchip
AT91RM9200-CJ-002

AT91RM9200-CJ-002 - ARM920T MCU 180MHz 128KB ROM BGA-256 | Microchip

The Microchip AT91RM9200-CJ-002 is a complete system-on-chip built around the ARM920T ARM Thumb processor, integrating 128 KB of on-chip ROM, 48 KB of internal SRAM, and a rich set of system and application peripherals in a 256-ball BGA package (15x15 mm). The device operates at up to 180 MHz, delivering 200 MIPS with a memory management unit, 16 KB instruction cache, 16 KB data cache, and write buffer for high-throughput embedded workloads. An ARM920T-based microcontroller is a 16/32-bit RISC microprocessor core that combines the ARM7TDMI integer pipeline with separate instruction and data caches plus a memory management unit, making it suitable for running full operating systems such as Linux or Windows CE. As a product category, this sits within the ARM9 family of application processors, which targets industrial control, networking, and human-machine interface designs that demand deterministic real-time behavior with reasonable power dissipation. The architecture is widely adopted in point-of-sale terminals, building automation, and embedded gateways where deterministic interrupt handling is essential. Key features of the AT91RM9200-CJ-002 include a 10/100 Ethernet MAC with full DMA, a Full Speed USB Host and Device controller, a Multimedia Card Interface, I2S audio, three USARTs, two SPIs (master/slave), a TWI bus, a 16-bit timer/counter, and a real-time clock. The 256-BGA (15x15) industrial-temperature package (-40C to +85C) is suitable for harsh environment designs and is backed by a broad peripheral set that minimizes external glue logic. The device targets core voltage (Vcc) operation from 1.65 V to 1.95 V and includes an internal oscillator, four DMA channels, and an in-circuit emulator with debug communication channel for trace-aware debugging. Power management includes four programmable external interrupt lines, a watchdog timer, and a real-time clock with separate power domain for low-power standby. Typical applications include industrial automation controllers, Ethernet-attached embedded web servers, USB peripherals, building access control, and point-of-sale terminals. The integrated MAC and USB controllers allow single-chip designs that previously required a discrete network or peripheral controller. When designing with this part, plan PCB layout for the 256-ball BGA footprint, ensure 1.65 V-1.95 V core supply decoupling, and verify BGA ball pad pattern against the manufacturer footprint for manufacturability. This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet, supporting faster sourcing and BOM risk reduction for AT91RM9200-CJ-002 designs.

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AT91RM9200-QU-002 - ARM920T 180MHz MCU | Microchip | Industrial
AT91RM9200-QU-002

AT91RM9200-QU-002 - ARM920T 180MHz MCU | Microchip | Industrial

The Microchip Technology AT91RM9200-QU-002 is a 32-bit ARM920T-based embedded microprocessor running at up to 180 MHz with 128 KB on-chip ROM and 48 KB SRAM, housed in a 208-pin PQFP (28x28 mm) package. It integrates a full-speed USB host and device interface, a 10/100 Ethernet MAC, and a rich peripheral set for embedded control and communication designs. An ARM920T-based embedded microprocessor is a system-on-chip that combines a 32-bit RISC CPU core with memory management, cache, and integrated peripherals on a single die. The AT91RM9200 sits in the hierarchy of ARM9-based microcontrollers, which are themselves a subset of 32-bit embedded processors, which belong to the broader class of microprocessors and microcontrollers used across industrial, networking, and consumer electronics. Key features include a 16 KB instruction cache and 16 KB data cache with write buffer, a memory management unit (MMU) supporting Linux and real-time operating systems, 122 programmable I/O lines, and a supply voltage range of 1.65 V to 1.95 V for the core. The device delivers approximately 200 MIPS at 180 MHz, making it suitable for compute-intensive embedded tasks that require both performance and low power consumption. The AT91RM9200 architecture includes a 16-bit external bus interface, multiple USARTs, master/slave SPI channels, a two-wire interface (TWI), 16-bit timers, an I2S audio interface, and a multimedia card interface (MCI). This peripheral mix enables single-chip solutions for industrial gateways, data loggers, and network appliances without requiring external bridge chips. Typical applications include industrial automation controllers, Ethernet-to-serial gateways, point-of-sale terminals, and embedded Linux systems. The integrated 10/100 Ethernet MAC and USB host/device interfaces reduce BOM cost and board area in networked embedded designs. When designing with the AT91RM9200-QU-002, pay close attention to the 1.8 V core supply decoupling and the 3.3 V I/O rail sequencing. The 208-pin PQFP package requires careful PCB layout to manage the high pin count and maintain signal integrity on the external memory bus. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection and sourcing decisions.

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AT91RM9200CJ-100 - ARM920T MPU, 180MHz, 100MHz Ind. Temp | Microchip
AT91RM9200CJ-100

AT91RM9200CJ-100 - ARM920T MPU, 180MHz, 100MHz Ind. Temp | Microchip

The Microchip Technology AT91RM9200CJ-100 is an ARM920T-based embedded microprocessor (MPU) running up to 100MHz core clock for industrial temperature variants, delivering 200 MIPS integer performance with 16-bit/32-bit ARM/Thumb instruction set support. Housed in a 256-ball LFBGA (CJ) package (15x15mm), the part integrates an external memory interface, USB host/device, 10/100 Ethernet MAC, and standard peripherals for industrial control and connectivity designs. A microprocessor (MPU) is a system-on-chip that integrates a CPU core, memory controllers, and peripherals on a single die. Within the broader semiconductor hierarchy, an MPU sits above a microcontroller (MCU) in compute capability, sitting alongside application processors and DSPs. The ARM920T core inside the AT91RM9200 adds a Memory Management Unit (MMU), enabling full operating systems such as Linux and embedded Windows CE, unlike MCU-class ARM7 parts that run bare-metal or RTOS-only. Key features include a 16KB instruction cache plus 16KB data cache, write buffer, debug access port supporting JTAG-ICE, dedicated DBGU UART debug channel, embedded trace macrocell (ETM9) for real-time trace, and a power management controller with idle, slow-clock and peripheral-level gating. The external bus interface (EBI) supports SDRAM, SRAM, NAND flash with ECC, and CompactFlash, enabling flexible system memory architectures. Typical applications for the AT91RM9200CJ-100 include industrial gateways and protocol converters, networked PLCs, point-of-sale terminals, embedded HMI panels, and legacy Linux-based control systems where the 256-ball LFBGA (CJ) package provides compact BGA mounting on standard 4-layer PCBs. When designing with this device, allocate adequate ground and decoupling capacitance around the BGA balls, follow the Microchip AT91RM9200 hardware design checklist for SDRAM trace length matching (typically +/-50 mils for the byte-lane groups), and ensure the 32.768kHz slow crystal is placed within 5mm of the RTC pins for oscillator stability.

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AT91SAM7A1-AU 40MHz ARM7 ROMless MCU | Microchip Technology
AT91SAM7A1-AU

AT91SAM7A1-AU 40MHz ARM7 ROMless MCU | Microchip Technology

The Microchip Technology AT91SAM7A1-AU is a 16/32-bit ARM7-based ROMless microcontroller operating at up to 40 MHz and packaged in a 144-LQFP 20 x 20 mm surface-mount package. It uses a high-performance 32-bit RISC architecture with a dense 16-bit instruction set, embedded ICE debugging support, and a Debug Communication Channel. The device includes 4 KB of internal RAM, while external memory is required for boot code and application storage because the AT91SAM7A1-AU is ROMless. Its broad set of embedded peripherals is intended for industrial, communications, consumer, networking, and automotive-style control systems where a compact microcontroller and mature ARM7 ecosystem simplify product development. The manufacturer datasheet describes the AT91 SAM7 family as using an ARM7TDMI processor with Thumb-based instruction support, combined with high-density on-chip resources and extensive external-memory interfaces. A microcontroller is a dedicated semiconductor that integrates a processor core, memory, peripherals, and interface logic into one device. The ARM7 core provides a 32-bit RISC execution environment, while the Thumb instruction set supports more compact code representations for memory-constrained embedded products. In the AT91SAM7A1-AU, the ROMless architecture gives the designer control over external flash and SRAM implementation, allowing firmware, boot loaders, operating systems, and application data to be managed externally. This is useful when memory size, update strategy, security, or lifecycle requirements exceed what the internal memory can provide. Key characteristics include a maximum operating frequency of 40 MHz, 4 KB of internal RAM, a ROMless design, and a 144-LQFP package measuring 20 x 20 mm. Embedded ICE and the Debug Communication Channel support in-system debugging and communication-oriented development workflows. The large lead count provides access to the device's processor, memory, and peripheral resources, but it also requires careful escape routing and board-layout planning. Because the MCU is not USB-specific, Ethernet-enabled, or application-specific, its suitability depends on matching its external-memory bus, peripheral mix, voltage requirements, and package to the target system. Typical uses include industrial control panels, building automation modules, serial gateways, data acquisition units, motor and actuator controllers, instrument controls, and embedded communications equipment. Designers can use the AT91SAM7A1-AU when they need a general-purpose ARM7 controller with external memory rather than a highly integrated low-power microcontroller. Debug access and a mature ARM7 development ecosystem make it practical for prototypes, legacy platform maintenance, and products requiring predictable peripheral control. A key design consideration is that external memory configuration must be designed around the AT91SAM7A1-AU's bus and memory-controller requirements. Place decoupling and external-memory circuitry close to the associated pins, keep high-speed traces short, and confirm that the power and ground arrangement supports the complete processor, memory, and peripheral load. This page combines device specifications, package information, drop-in alternatives, application guidance, and engineering-oriented design notes to support component selection and board planning.

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AT91SAM7A2-AU - 30MHz ROMless ARM7 MCU | Microchip | LQFP
AT91SAM7A2-AU

AT91SAM7A2-AU - 30MHz ROMless ARM7 MCU | Microchip | LQFP

The Microchip Technology AT91SAM7A2-AU is a 16/32-bit ARM7-based ROMless microcontroller operating at up to 30 MHz, with 16 KB of internal RAM, 57 general-purpose I/O lines, and a 176-lead LQFP surface-mount package measuring 24 mm by 24 mm. Its ARM7 RISC architecture, mixed 16/32-bit instruction set, and integrated debug support target embedded control systems requiring deterministic real-time behavior without an embedded boot Flash memory. According to the Microchip documentation, the device also supports 64 KB of internal high-speed Flash organized into 512 pages and includes embedded ICE and Debug Communication Channel support. An ARM7-based microcontroller is a 32-bit reduced-instruction-set-computing control device whose Thumb instruction mode supports compact 16-bit code while its 32-bit instruction set handles more complex operations. In the product hierarchy, the AT91SAM7A2-AU is a microcontroller, embedded processor, semiconductor, and programmable control component. It sits above general-purpose computing because its peripherals, interrupt structure, and embedded debug interface are tailored to industrial, communications, and real-time equipment. Principal features include a 30 MHz maximum operating frequency, 16 KB of internal RAM, 57 general-purpose I/O lines, and an integrated 10-bit ADC interface. The device provides PWM channels, USART-based serial communications, and an ARM7TDMI-class RISC core. Its 176-LQFP package exposes substantially more I/O and peripheral connections than small leaded packages, making the device suitable for systems that need broad external connectivity while retaining a conventional leaded package for inspection and assembly. The ROMless architecture is the most important engineering distinction. Because the AT91SAM7A2-AU does not provide a complete application program in its internal Flash, a boot system must load firmware into external memory before normal execution. This arrangement can separate boot code from the main application, permit controlled recovery or firmware updates, and allow the same microcontroller target to support different storage configurations. System designers must therefore budget for external memory, address-bus correctness, startup code, and sufficient flash endurance for the selected update strategy. Typical uses include industrial controllers, serial gateways, data acquisition equipment, building-control interfaces, and embedded access systems. The 57 I/O lines support multiple sensors, actuators, communications ports, and status indicators without requiring a companion I/O expander in moderate-complexity designs. The ADC supports analog measurement, while the USART and PWM resources suit sensor monitoring, actuator control, and supervisory communications. The large LQFP footprint is advantageous for prototype accessibility but requires a 176-lead PCB layout and careful consideration of assembly cost. When designing around this device, verify the external-memory interface, boot configuration, pin multiplexing, and signal levels before committing the PCB. Because the part is ROMless, firmware storage and the boot sequence are part of the system architecture rather than optional software details. A legacy ARM7 design should also include the appropriate debugger, startup routines, clock configuration, and memory timing for the selected external devices. This product overview combines the exact orderable MPN, package and core details, practical firmware considerations, and qualified replacement guidance for engineers evaluating an obsolete ARM7 control platform. It also distinguishes true drop-in interchangeability from newer Cortex-M devices that may provide similar peripherals but require different firmware, package layouts, and board resources.

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AT91SAM7A3-AU 60MHz ARM7 MCU 256KB Flash 100-LQFP
AT91SAM7A3-AU

AT91SAM7A3-AU 60MHz ARM7 MCU 256KB Flash 100-LQFP

The Microchip Technology AT91SAM7A3-AU is a 32-bit ARM7TDMI microcontroller operating up to 60 MHz, with 256 KB of internal Flash, 32 KB of SRAM, integrated CAN controllers, a 10-bit ADC, timers, and serial communication peripherals in a 100-LQFP package. It belongs to the AT91SAM7A family of ARM Thumb-based embedded-control microcontrollers. An ARM7 microcontroller combines a 32-bit reduced-instruction-set-computing processor with integrated memory and peripherals for embedded control systems. The AT91SAM7A3 architecture combines the ARM7TDMI core with high-speed Flash, SRAM, CAN connectivity, ADC support, timers, and serial interfaces. This hierarchy places the device within the broader category of microcontrollers, embedded processors, and semiconductor components used in industrial, automotive, medical, and communications equipment. The AT91SAM7A3-AU provides 256 KB of high-speed internal Flash and 32 KB of SRAM, allowing firmware and working data to be stored on-chip while reducing external component count. The device operates at up to 60 MHz and includes two 2.0B full CAN controllers, a 10-bit ADC, timers, and multiple serial communication channels. Embedded ICE and Debug Communication Channel support assist development, debugging, and production programming. The AT91SAM7A3 combines a high-performance 32-bit RISC processor with a high-density 16-bit Thumb instruction set. Its integrated CAN capability is useful for networked industrial and automotive control systems, while the ADC supports analog signal acquisition in sensor, measurement, and medical equipment. The 100-LQFP package provides the physical interface required for these mixed signal and communication functions. Typical applications include automotive control modules, industrial automation equipment, medical monitoring systems, CAN-connected embedded controllers, and communications equipment. The integrated CAN controllers are particularly useful when a design requires reliable network communication without adding discrete CAN transceivers, although external transceiver and protection components are still required for physical-layer implementation. Designers should account for the device’s supply voltage limits, peripheral pin multiplexing, clock configuration, and memory map when laying out a PCB. The 100-LQFP footprint should be checked against the manufacturer pin description table before assigning signals. External decoupling, oscillator components, programming access, and CAN transceiver interfaces should follow the reference design guidance in the AT91SAM7A3 documentation. This page combines the verified product characteristics, manufacturer-datasheet information, package details, application guidance, and documented replacement considerations to support faster engineering evaluation and sourcing.

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AT91SAM7S128D-AU - 55MHz ARM7TDMI MCU, 128KB Flash, USB | Microchip
AT91SAM7S128D-AU

AT91SAM7S128D-AU - 55MHz ARM7TDMI MCU, 128KB Flash, USB | Microchip

The Microchip (formerly Atmel) AT91SAM7S128D-AU is a 32-bit ARM7TDMI RISC microcontroller operating at up to 55 MHz, integrating 128 KB of Flash and 32 KB of SRAM on-chip, and housed in a 64-pin LQFP (10x10 mm) package. It is a member of the SAM7S flash microcontroller family and targets cost-sensitive, high-volume embedded applications that require USB connectivity. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for program storage, SRAM for runtime data), and a rich set of peripherals (timers, communication interfaces, ADCs, I/O). The AT91SAM7S128D-AU sits within the broader hierarchy: ARM7TDMI core -> ARM7 family -> 32-bit RISC microcontroller -> embedded MCU -> semiconductor IC. Its integrated USB 2.0 Full-Speed Device port differentiates it from competitors by eliminating the need for an external USB transceiver, reducing BOM cost and PCB area in peripheral designs. Key features include a 55 MHz ARM7TDMI core with Thumb instruction set support, 128 KB on-chip Flash, 32 KB SRAM, USB 2.0 Full-Speed Device port, up to 32 peripheral DMA channels, a 10-bit ADC, two USARTs, one UART, two TWI (I2C-compatible) interfaces, an SPI, two 3-channel 16-bit timers, an RTT, a watchdog timer, and a real-time clock. The device operates from 3.0 V to 3.6 V supply and includes an embedded voltage regulator for core logic. Architecturally, the SAM7S series uses a multi-layer AHB/APB bus matrix that allows simultaneous access to peripherals by the CPU and the peripheral DMA controller, eliminating data-transfer bottlenecks typical of single-bus MCUs. The integrated 3.3V LDO regulator and power-on-reset block reduce external component count to a minimum, while the Embedded Flash Controller (EFC) provides Flash read and write access with wear-leveling support. Typical applications include USB peripherals such as HID devices, USB-to-serial adapters, USB barcode scanners, USB keyboards and mice; consumer electronics with embedded control; industrial control nodes; and migration paths for legacy 8-bit designs that require more performance. The aggressive price point and high integration make it well suited to cost-sensitive, high-volume consumer markets. When designing with the AT91SAM7S128D-AU, engineers should ensure the 64-LQFP thermal pad is properly soldered for thermal and electrical performance, and use the integrated voltage regulator's recommended 4.7 µF decoupling capacitors. For USB applications, the D+ and D+ pull-up resistor network must follow the USB 2.0 specification for proper enumeration. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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AT91SAM7X512B-AU - 512KB Flash ARM7 MCU w/ Ethernet | Microchip
AT91SAM7X512B-AU

AT91SAM7X512B-AU - 512KB Flash ARM7 MCU w/ Ethernet | Microchip

The Microchip AT91SAM7X512B-AU is a 32-bit ARM7TDMI-based flash microcontroller (MCU) running at 55 MHz with 512 KB of embedded Flash and 128 KB of SRAM, housed in a 100-pin LQFP (14x14 mm) package. It integrates a 10/100 Mbps Ethernet MAC, USB 2.0 Full-Speed device port, CAN 2.0A/B controller, and a rich set of serial peripherals including USART, SPI, TWI (I2C), and SSC for audio/I2S streams. The integrated Ethernet MAC embeds a static-MII-less PHY interface and a 16-bit host-side bus that simplifies TCP/IP offload via a hardwired MAC rather than a software stack.

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AT91SAM7X512B-AUR - 512KB Flash ARM7 MCU 100-LQFP | Microchip
AT91SAM7X512B-AUR

AT91SAM7X512B-AUR - 512KB Flash ARM7 MCU 100-LQFP | Microchip

The Microchip AT91SAM7X512B-AUR is a 32-bit ARM7TDMI-based flash microcontroller integrating 512KB of program flash and 128KB of SRAM on-chip, operating at up to 55 MHz from a 1.65V–1.95V core / 3.0V–3.6V I/O supply, housed in a 100-pin LQFP (14x14 mm) package supplied on tape and reel. What is an ARM7-based flash microcontroller? An ARM7TDMI MCU is a 32-bit RISC processor with Thumb 16-bit compressed instruction support, integrating flash program memory, SRAM, peripherals, and often connectivity blocks such as Ethernet MAC and CAN on a single die. In the broader taxonomy it sits below ARM Cortex-M parts but above 8/16-bit 8051/AVR devices, occupying the industrial/embedded connectivity tier where deterministic 32-bit performance and integrated wired networking matter more than ultra-low power. Key features of the AT91SAM7X512B-AUR include an integrated 10/100 Ethernet MAC with MII/RMII interface, a CAN 2.0B controller, a USB 2.0 Full-Speed Device port, an 8-channel 10-bit ADC, four 16-bit timers, an 8-bit RTC, and a peripheral DMA controller that offloads data movement from the core. The embedded flash controller supports in-system programming and bootloader operation from USB or UART. Architecturally, the SAM7X512B uses a three-layer AHB bus matrix connecting the core, flash controller, peripheral DMA, and a bridge to APB peripherals, allowing parallel bus transactions that improve sustained throughput for Ethernet and USB traffic. The ARM7TDMI core's three-stage pipeline delivers roughly 0.9 MIPS/MHz, giving ~49 Dhrystone MIPS at 55 MHz. Typical applications include industrial gateways, building-automation controllers, point-of-sale terminals, CAN-based sensor nodes, and embedded Ethernet bridges. Integrated Ethernet plus CAN makes the part especially suitable for protocol-conversion bridges between factory-floor CAN networks and IP backhaul. When designing with the AT91SAM7X512B-AUR, verify the dual-rail supply (1.8V VDDCORE plus 3.3V VDDIO) and provide bulk decoupling near each power pin. Microchip designates the SAM7X family as not recommended for new designs (NRND); the AT91SAM7XC512B is the pin-compatible successor with optional AES/TDES crypto accelerators. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, including a v3.9-aligned alternatives list of same-brand and cross-brand drop-in options verified for package and pin compatibility.

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AT91SAM9260B-CU - ARM926EJ-S MCU 180MHz 217-LFBGA | Microchip
AT91SAM9260B-CU

AT91SAM9260B-CU - ARM926EJ-S MCU 180MHz 217-LFBGA | Microchip

The Microchip Technology (formerly Atmel) AT91SAM9260B-CU is a SMART 32-bit ARM926EJ-S embedded microprocessor running at up to 180 MHz, packaged in a 217-ball LFBGA (15x15 mm). It integrates 32 KB of ROM, 8 KB of SRAM, and a 6-layer bus architecture that delivers up to six simultaneous 32-bit internal buses for parallel data movement. Key features include Full-Speed USB Host and Device ports, a 10/100 Ethernet MAC with RMII/MII interface, an image sensor interface (ISI), a MultiMedia Card Interface (MCI), I2S audio, three USARTs, two UARTs, SPI, TWI (I2C), Timer Counters, a Synchronous Serial Controller (SSC), and an ADC. The 6-layer matrix bus architecture provides high internal bandwidth, which makes the part suitable for multimedia, image-capture, and connected-embedded applications. The 'B' silicon revision improves upon the original AT91SAM9260 with errata fixes and refined peripheral behavior. The AT91SAM9260 family occupies the ARM9-based MPU segment of the Microchip SAM9 portfolio. As an ARM926EJ-S device with a memory management unit (MMU), it runs full operating systems such as Linux, WinCE, and MQX. Compared to Cortex-M microcontrollers, it offers higher compute throughput, richer connectivity peripherals, and OS support at the cost of higher power and a more complex toolchain. Typical applications include human-machine interfaces (HMIs), industrial control panels, image-capture and machine-vision front-ends, networked point-of-sale terminals, building automation gateways, and low-cost Ethernet/USB-connected embedded nodes where an MMU-capable SoC is required. When designing with this device, ensure the LFBGA-217 layout uses the manufacturer-recommended 8-layer PCB stack-up, a 12 MHz or similar main oscillator, and a regulated 1.8V core / 3.3V I/O supply pair to satisfy the SAM9260 power-domain requirements. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single decision-grade source.

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AT91SAM9G20B-CU - 400MHz ARM926 MPU, 217-LFBGA | Microchip
AT91SAM9G20B-CU

AT91SAM9G20B-CU - 400MHz ARM926 MPU, 217-LFBGA | Microchip

The Microchip AT91SAM9G20B-CU is a 400 MHz ARM926EJ-S embedded microprocessor (MPU) housed in a 217-ball LFBGA (15x15 mm) package, integrating fast ROM/RAM, a 10/100 Ethernet MAC, USB host/device interfaces with on-chip transceivers, and an image sensor interface. It belongs to the SAM9G family of smart ARM-based MPUs designed for connected embedded systems. The 'B' suffix designates the revision with the higher 400 MHz core clock versus the legacy 200/266 MHz SAM9G, while the 'CU' suffix denotes the 217-LFBGA industrial-grade package variant. An ARM926EJ-S microprocessor is a 32-bit RISC CPU core featuring the ARMv5TEJ instruction set with Jazelle Java acceleration, MMU, and DSP extensions, designed for embedded applications requiring full operating-system support such as Linux and Windows Embedded Compact. In the broader system hierarchy, the AT91SAM9G20 sits below application processors and above microcontrollers (MCUs), bridging the gap between deterministic MCU-class peripherals and rich-OS-capable CPUs. The 217-LFBGA package is part of the fine-pitch BGA surface-mount family requiring reflow soldering and X-ray or AOI inspection. Key features include an ARM926EJ-S core with 32 KB instruction cache and 32 KB data cache, 64 KB internal SRAM, 16 KB ROM containing the bootloader, and an external bus interface supporting DDR/LPDDR, NAND Flash, and SDRAM. Communication peripherals cover two USB 2.0 Full-Speed ports (host and device), a 10/100 Ethernet MAC with MII/RMII, an Image Sensor Interface (ISI), two SSC/SPI, four UART, two TWI (I2C), and a high-speed multimedia card interface (HSMCI). Operating voltage is 0.9-1.1 V core with 1.65-3.6 V I/O and memory. Typical applications include industrial HMI panels, point-of-sale terminals, barcode scanners, building automation gateways, portable medical data terminals, and Linux-based IoT edge nodes. The combination of Ethernet, dual USB, image sensor input, and DDR controller enables a true single-chip system design without an external bus-master companion. Compared to microcontrollers in the same generation, the AT91SAM9G20 provides full MMU support and Linux BSP availability from Microchip, simplifying migration from MCU-class designs when memory protection and complex OS features are required.

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AT97SC3204-U2A1A-10 - TPM 1.2 Crypto Controller | Microchip | 28-TSSOP
AT97SC3204-U2A1A-10

AT97SC3204-U2A1A-10 - TPM 1.2 Crypto Controller | Microchip | 28-TSSOP

The Microchip AT97SC3204-U2A1A-10 is an AVR-based CryptoController Trusted Platform Module (TPM) compliant with TCG (Trusted Computing Group) TPM 1.2 specifications, housed in a 28-pin TSSOP package (4.40 mm body width). It is a fully integrated hardware security module designed for embedded systems that need to perform RSA/SHA-1 cryptographic operations, secure key storage, platform attestation, and TWI (I²C-compliant) host communication. The device is part of Microchip's AT97SC3204 family and is rated for the industrial temperature range. A Trusted Platform Module (TPM) is a dedicated hardware security controller (a type of microcontroller + EEPROM security IC) that provides a tamper-resistant root of trust for computing platforms. In the broader taxonomy it sits under security IC -> authentication IC -> application-specific microcontroller, and ultimately under semiconductor. TPMs perform RSA encryption/decryption, SHA-1 hashing, random number generation, and sealed key binding/unbinding, all while keeping private keys inside a hardware boundary that resists software-level extraction. Key features include a hardware RNG (FIPS 140-2 compliant random number generator), an integrated Atmel AVR core for command processing, on-chip non-volatile EEPROM key storage, and a TWI/I²C host interface. The device operates from a 3.3 V supply, supports I²C at standard and fast-mode rates, and provides Endorsement Key (EK) pre-provisioning under the suffix -10 (signed EK). The 28-TSSOP footprint and standard TPM pinout allow drop-in replacement on compliant mainboard headers. The architecture combines an 8-bit AVR MCU, a crypto-acceleration block for RSA-1024/2048 and SHA-1, secure EEPROM for persistent keys, and a TWI slave controller. This partitioning keeps the host CPU free of cryptographic computation and keeps private keys bound to hardware for the platform's lifetime. Typical applications include commercial desktop and notebook PCs, server motherboards, embedded industrial controllers requiring secure boot, network equipment needing platform attestation, and any TCG-compliant system that requires hardware-bound credential storage. The TWI interface integrates with standard I²C controllers on most SBCs and SoCs. Designers should ensure the LPC (Low Pin Count) interface is correctly wired to the host chipset's TPM header and that the firmware stack (BIOS/UEFI TCG driver) is enabled in BIOS. The EK variant (-10) is signed and ready for attestation flows; the EK-less variant is suitable for non-attestation use cases. This page combines distributor pricing snapshots, drop-in alternative analysis, and design notes not included in the manufacturer datasheet addendum, providing engineering perspective beyond raw specifications.

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AT97SC3205T-U3A17-AA - TPM I2C Security Module | Microchip
AT97SC3205T-U3A17-AA

AT97SC3205T-U3A17-AA - TPM I2C Security Module | Microchip

The Microchip AT97SC3205T-U3A17-AA is a fully integrated Trusted Platform Module (TPM) security IC designed to be embedded into computer and embedded systems for hardware-rooted cryptographic functions. Housed in a 28-pin SSOP package, this device conforms to the Trusted Computing Group (TCG) Trusted Platform Module Main v1.2, r116 specification and is intended for I2C-compliant host integration, providing secure key storage, platform authentication, and integrity measurement. What is a TPM? A Trusted Platform Module is a dedicated hardware security controller that provides tamper-resistant storage for cryptographic keys, secure generation of RSA keys up to 2048 bits, platform integrity measurement via SHA-1/SHA-256, and remote attestation. The TPM sits on the I2C bus as a peripheral to the host CPU and occupies a unique position in the security hierarchy: hardware root of trust -> security module -> platform security -> system integrity. AT97SC3205T-U3A17-AA implements this hierarchy in a single low-power CMOS device. Key features of the AT97SC3205T-U3A17-AA include RSA key generation up to 2048-bit keys, SHA-1 and SHA-256 hash engines for platform integrity, hardware random number generator, secure key storage with hardware tamper detection, I2C host interface for low-pin-count integration, and an integrated firmware that is field-upgradable through a secured loader. The device operates from a single 3.3V supply and uses CMOS technology for low quiescent current. The AT97SC3205T family is positioned for desktops, laptops, embedded industrial PCs, and other systems that require TCG 1.2 compliance (note: not TCG 2.0). Designers select this part when TCG Main v1.2 r116 compliance is mandated by procurement specifications, by Microsoft Windows Vista/7 era certification requirements, or by embedded OEMs whose customers require TPM presence in the BOM. Because TPM 2.0 has largely replaced 1.2 in new designs, this part serves legacy systems, industrial security appliances, and embedded markets where long-life TCG 1.2 platforms are standard. Typical applications include commercial desktop and laptop motherboards, industrial PCs and HMIs, point-of-sale terminals, secure printing devices, and embedded security appliances. The I2C interface allows integration with both x86 chipsets and ARM-based SoCs that expose I2C. For TCG 2.0 systems, consider AT97SC3205T family members with TCG 2.0 compliance or the newer AT97SC3205 family variants. When designing with the AT97SC3205T-U3A17-AA, the host driver stack must match the TCG 1.2 specification; Linux drivers (tpm_tis_i2c) and Windows TBS (TPM Base Services) provide the OS-level interface. The I2C lines require pull-up resistors per I2C specification, and the TPM's GPIO/PIR (presence) pin must be wired to the platform's TPM-presence detection logic. Power sequencing: VCC must stabilize before the host begins I2C transactions. This page synthesizes distributor availability, parametric alternatives within the same SSOP-28 footprint, and platform-integration design notes drawn from manufacturer reference documentation - content not found in the standalone datasheet.

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ATA6563-GAQW1 - High-Speed CAN FD Transceiver SOIC-8 | Microchip
ATA6563-GAQW1

ATA6563-GAQW1 - High-Speed CAN FD Transceiver SOIC-8 | Microchip

The Microchip ATA6563-GAQW1 is a high-speed CAN FD transceiver providing an interface between a CAN protocol controller and the physical two-wire CAN bus. Housed in an 8-pin SOIC package, the device supports CAN FD data rates up to 5 Mbit/s and operates from a 5V nominal supply across an ambient temperature range of -40C to +150C (AEC-Q100 Grade 0). The integrated VIO pin and Wake-Up Pattern (WUP) function provide low-power standby capability with bus wake-up, enabling nodes to remain quiescent while still monitoring the CAN bus. A CAN FD transceiver (Controller Area Network with Flexible Data-Rate) is the physical-layer device that translates the differential logic signals of a CAN protocol controller into the bus-side differential signaling required by the ISO 11898-1 standard. CAN transceivers belong to the broader category of automotive-grade communication interface ICs, sitting in the signal chain between a microcontroller's CAN controller and the actual bus wiring. CAN FD extends classical CAN from 1 Mbit/s to 5 Mbit/s by allowing faster bit rates during the data phase, and the transceiver must preserve the dominant-bit timing needed for arbitration. Key features include compliance with ISO 11898-1:2015, low electromagnetic emission (EME), high electromagnetic immunity (EMI), an under-voltage detection on VCC and VIO, thermal shutdown protection, and bus-pin transient voltage robustness typical of automotive transceivers. The -GAQW1 ordering code designates the SOIC-8 variant (3.9 mm body width, tape-and-reel packaging, automotive qualification per AEC-Q100). The architecture combines a differential transmitter with slope-controlled output to limit EME, a high-CMRR differential receiver, and integrated protection diodes on the bus pins. The VIO reference pin lets the logic interface track I/O voltages down to 1.8V on modern microcontrollers, while the WUP function filters remote-frame wake-up events per the ISO 11898-2 standard. Bus pins are tolerant to -27V to +40V and include load-dump resilience typical of automotive CAN transceivers. Typical applications include automotive body and powertrain ECUs, ADAS sensor nodes, industrial CAN FD networks, gateway modules bridging CAN and CAN FD segments, and battery-management or motor-control ECUs that need a low-power standby mode with selective wake-up. Industrial uses include CANopen and DeviceNet nodes and remote I/O blocks. When designing with the ATA6563-GAQW1, place a 100 nF decoupling capacitor close to VCC and use a split termination (60 ohm resistor + 4.7 nF capacitor) on each bus terminal to meet OEM EMC requirements. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers an at-a-glance view of availability, cross-brand equivalents, and CAN bus design best practices.

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ATA6571RT - Radiation-Tolerant CAN FD Transceiver, 5 Mbps | Microchip
ATA6571RT

ATA6571RT - Radiation-Tolerant CAN FD Transceiver, 5 Mbps | Microchip

The Microchip Technology ATA6571RT is a radiation-tolerant, stand-alone high-speed CAN FD transceiver that interfaces a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. The device supports data rates up to 5 Mbps in CAN FD mode, operates from a 4.5V to 5.5V supply, and is delivered in a small-footprint SOIC-style package suited to flight hardware. A CAN transceiver is the physical-layer bridge between a microcontroller's CAN protocol controller and the differential two-wire bus. In modern in-vehicle networks (IVN), CAN FD (Flexible Data-rate) extends classic CAN's 1 Mbps ceiling by allowing higher bit rates in the data phase, which is critical for advanced driver-assistance (ADAS) sensors, body controllers and powertrain ECUs. The ATA6571RT is part of the radiation-tolerant (Rad-Tol) product family designed for low-earth-orbit constellations, GEO communications payloads and other space-grade platforms where single-event effects (SEE) and total ionizing dose (TID) must be characterized. Key features include ISO 11898-2 and ISO 11898-5 physical-layer compliance, SAE J2962-2 conformance for radiated/conducted immunity, ±40V bus fault protection, thermal shutdown, and an integrated dominant-timeout watchdog. The bus pins are designed for high DC load-dump resilience and meet the rigorous EMC/ESD requirements common to aerospace and heavy-industrial environments. Architecturally, the device combines a low-EMI driver stage with a wide-bandwidth receiver optimized for the 5 Mbps FD data phase. The radiation-tolerance is achieved through silicon process selection, characterized SEE/TID performance, and per-lot qualification testing documented in the Microchip radiation reports. Typical applications include satellite command/telemetry buses, spacecraft avionics networks, launch-vehicle data acquisition, and radiation-prone industrial controls. The same part can also be designed into high-reliability ground systems where a Rad-Tol part number simplifies parts-control and derating documentation. Design consideration: verify bus termination (typically 120 ohm at each end of the bus), place the device close to the bus connector to minimize stub length, and ensure the VCC pin has a 100 nF + 4.7 uF decoupling network within 5 mm. In space applications, single-event functional interrupt (SEFI) recovery timing must be evaluated against the host MCU's CAN controller timeout window. This page synthesizes distributor availability, drop-in Rad-Tol and standard CAN FD alternatives, and application guidance not collected in the manufacturer brochure alone.

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ATECC608A-MAHDA-T ECC Secure Authentication IC | Microchip
ATECC608A-MAHDA-T

ATECC608A-MAHDA-T ECC Secure Authentication IC | Microchip

The Microchip ATECC608A-MAHDA-T is an ECC secure authentication IC with hardware-based key storage and cryptographic accelerators for authentication, signing, verification, and key agreement. It is configured for I2C communication and is packaged as an 8-pad, 2 x 3 x 0.6 mm thermally enhanced plastic UDFN. The device stores up to 16 keys, certificates, or miscellaneous secure data objects in its EEPROM array. A CryptoAuthentication IC is a specialized security integrated circuit used to protect cryptographic keys and perform security operations without exporting sensitive material to the host processor. The ATECC608A belongs to the Microchip CryptoAuthentication family and combines protected EEPROM with hardware cryptographic accelerators, helping designers implement secure boot, device authentication, anti-counterfeiting, and ecosystem-control functions. The verified component information identifies ECC/ECDSA/ECDHE capability, I2C interface support, and protected storage for up to 16 keys, certificates, or data objects. Hardware-supported asymmetric signing, verification, and key agreement can reduce the software burden on the host MCU while preserving cryptographic material inside the secure device. The exact operating limits, memory-map details, security-certification status, and electrical timing values require confirmation in the manufacturer datasheet. Typical uses include network and IoT endpoint security, secure boot, encrypted message handling, key generation for software downloads, anti-counterfeiting, and secure-element-based product identity. The device is especially suitable when a system needs an I2C-connected hardware security anchor for credentials, device certificates, or firmware authenticity decisions. In a design, place the UDFN close to the host controller and route I2C signals with appropriate pull-up and decoupling arrangements. Follow the manufacturer reference schematic and package land pattern, confirm clock and signal timing, and protect provisioning credentials during manufacturing. Do not assume that software migration or device replacement preserves secrets without validating the new device's provisioning and migration process. This page combines verified distributor identity, package, interface, storage, and cryptographic-use information with practical sourcing and migration context. It intentionally distinguishes confirmed facts from parameters that are not present in the supplied verified data.

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ATECC608B-MAHCZ-S - ECC Secure Element SWI UDFN-8 | Microchip
ATECC608B-MAHCZ-S

ATECC608B-MAHCZ-S - ECC Secure Element SWI UDFN-8 | Microchip

The Microchip Technology ATECC608B-MAHCZ-S is a CryptoAuthentication cryptographic secure element (authentication IC) with ECC/ECDH hardware crypto acceleration, single-wire interface (SWI) communication, and secure hardware-based key storage, housed in an 8-pin UDFN (2x3 mm) surface-mount package. Pricing starts from approximately $1.17 per unit as of 2026-10-12 (LCSC). A secure element is a dedicated cryptographic co-processor that stores secret keys in tamper-resistant hardware, isolated from the main MCU or MPU. Within the power management and system-security hierarchy, it sits alongside microcontrollers and interface ICs, offloading asymmetric cryptography, secure boot validation, and anti-cloning duties that would otherwise expose keys in software. The ATECC608B belongs to Microchip's CryptoAuthentication family, which spans the ATECC508A, ATECC608A, and ATECC608B generations. Key features include NIST-standard P-256 elliptic-curve support for ECDSA sign/verify and ECDH key agreement, hardware SHA-256 hashing and HMAC, up to 16 configurable key storage slots, and an EUI-48/EUI-64 based serial number for device identity. The MAHCZ suffix denotes the SWI (single-wire) communication interface, requiring only a single GPIO pin over a wide voltage range. Technical depth: the device consumes extremely low power, making it well suited to battery-powered IoT endpoints. Its secure hardware key storage prevents key extraction even under sophisticated physical attacks. The ATECC608B provides security enhancements over the ATECC608A while remaining fully backwards compatible in commands, packages, and pinout, per Microchip's migration application note DS40002237A. Typical applications include IoT network endpoint authentication, secure boot firmware validation, anti-cloning protection for consumables and peripherals, and TLS client certificate storage for cloud connectivity in smart-home and industrial devices. Design consideration: choose the MAHCZ (SWI) variant only when a single-GPIO bus is required; the MAHDA variant supports standard I2C up to 1 Mbps. Reserve a GPIO on your MCU for SWI communication and plan provisioning during manufacturing. This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not found in the manufacturer datasheet, providing unique cross-reference value for engineers and buyers.

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ATECC608B-SSHDA-B - CryptoAuthentication IC, I2C, 8-SOIC | Microchip
ATECC608B-SSHDA-B

ATECC608B-SSHDA-B - CryptoAuthentication IC, I2C, 8-SOIC | Microchip

The Microchip Technology ATECC608B-SSHDA-B is a member of the CryptoAuthentication family of high-security cryptographic devices that combine hardware-based key storage with hardware cryptographic accelerators. Housed in an 8-pin SOIC (3.90 mm) package, it integrates an ECC-P256 engine supporting ECDH and ECDSA, an AES-128 hardware accelerator, SHA-256 hashing, and a hardware random number generator. The device communicates with a host MCU over I2C at up to 1 Mb/s and operates from a 2.0 V to 5.5 V supply across the -40 °C to +85 °C industrial temperature range. A cryptographic co-processor is a dedicated hardware block that offloads mathematically intensive security operations from a microcontroller, isolating private keys inside a tamper-resistant silicon boundary so they never appear in host memory. Within the system hierarchy, the ATECC608B sits at the secure-element layer above general-purpose MCUs, complementing TLS software stacks with hardware root-of-trust primitives. Microchip's CryptoAuthLib software library abstracts I2C transactions so designers can issue sign/verify, key agreement, and AES-GCM commands with a few function calls. Key features include protected storage for up to 16 keys/certificates/data slots, FIPS186-3 ECDSA sign/verify at P-256, NIST SP800-56A ECDH key agreement, AES-128-GCM/ECB encryption/decryption, monotonic counters, and secure boot validation hooks. Each slot has configurable access permissions and can be locked permanently, making the device a turnkey root-of-trust for IoT endpoint authentication, anti-counterfeiting, and IP protection. The internal architecture pairs a secure EEPROM key store with hardware accelerators for ECDSA, ECDH, AES-128, and SHA-256, all fronted by a true random number generator (TRNG) that meets NIST SP800-22 guidelines. Internal voltage and tamper monitors can zeroize keys on detected glitches, while GPIO with optional secure signal assertions enable host MCU wake-up or LED feedback during provisioning. Typical applications include IoT node authentication, secure boot validation for Linux/MCU firmware, accessory and consumable anti-cloning, TLS handshake acceleration, message encryption with AES-GCM, and IP/feature enablement for licensed products. Designers add the ATECC608B to existing designs via a 2-wire I2C bus, requiring only VCC, GND, SDA, and SCL pull-ups. When designing with this device, allocate a unique 7-bit I2C address (factory default is 0x60) and respect the GPIO default-state behavior at power-up. Use Microchip's CryptoAuthLib and the AT88CK590 kit for provisioning and follow the migration guide AN5078 if upgrading from ATECC608A.

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ATECC608B-SSHDA-T - CryptoAuthentication IC, SOIC-8 | Microchip
ATECC608B-SSHDA-T

ATECC608B-SSHDA-T - CryptoAuthentication IC, SOIC-8 | Microchip

The Microchip Technology ATECC608B-SSHDA-T is a member of the CryptoAuthentication™ family of high-security cryptographic devices that combine world-class hardware-based key storage with hardware cryptographic accelerators. It is offered in an 8-pin SOIC package with I²C interface, supports ECC-P256 (ECDH and ECDSA), SHA-256, AES-128-GCM, and provides a hardware random number generator (NIST SP 800-22 compliant) plus a monotonic counter. The device integrates 10Kb secure EEPROM for keys, certificates, and data, with built-in tamper resistance including voltage glitch and temperature tamper detection. What is a CryptoAuthentication IC? A CryptoAuthentication IC is a specialized secure element that offloads cryptographic operations from the main microcontroller and protects private keys in hardware-isolated storage. These devices sit at the foundation of the security hierarchy: CryptoAuthentication IC → secure element → hardware root-of-trust → embedded security subsystem. Unlike software-based cryptography, hardware secure elements ensure private keys never leave the silicon, dramatically reducing attack surface for IoT devices, network accessories, and edge nodes where MCU resources are limited but trust is non-negotiable. The ATECC608B features a full ECDH/ECDSA engine operating in approximately 13 ms for sign operations and SHA-256/HMAC hardware acceleration, dramatically reducing cryptographic workload on host MCUs. It supports standard I²C up to 1 Mbps with configurable I²C addresses, an optional single-wire interface (SWI) variant, and operates from 2.0V to 5.5V supply with deep-sleep current as low as <150 nA. Internal EEPROM is locked through one-way fuses, preventing post-deployment firmware or key extraction by physical or remote attacks. Typical applications include Matter/Thread device authentication, secure boot for Linux/Windows IoT edge nodes, AWS IoT multi-account registration, IP protection and firmware anti-cloning, accessory and consumable authentication (medical, industrial, printer cartridges), and TLS 1.2/1.3 mutual authentication offload for resource-constrained MCUs. The device ships with Microchip's CryptoAuthLib, which provides a unified API across the entire CryptoAuthentication family. When designing with the ATECC608B, ensure I²C pull-ups are present (the SOIC version uses standard I²C, not SWI), allocate a dedicated 7-bit I²C address, and provision keys via the Microchip CryptoEvaluation kit during development. The GPIO pin can be used as a power-on reset indicator or wake source. Migration from ATECC608A is software-compatible via CryptoAuthLib. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not consolidated in the manufacturer datasheet alone.

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ATF1502AS-10AU44 - 32-Macrocell 5V ISP CPLD, 10ns, TQFP-44 | Microchip
ATF1502AS-10AU44

ATF1502AS-10AU44 - 32-Macrocell 5V ISP CPLD, 10ns, TQFP-44 | Microchip

The Microchip ATF1502AS-10AU44 is a 5V, 32-macrocell in-system programmable (ISP) Complex Programmable Logic Device (CPLD) housed in a 44-pin TQFP package, offering 10 ns pin-to-pin propagation delay and up to 36 usable inputs/I/Os in a 750-gate density footprint. Built on electrically-erasable (E2PROM) non-volatile memory technology, the ATF1502AS-10AU44 retains its configuration without external storage and supports field re-programmability through a standard 4-pin JTAG interface. A CPLD (Complex Programmable Logic Device) is a non-volatile programmable logic device that combines multiple PAL-like macrocells, a centralized AND array, and a programmable interconnect on a single chip. In the system hierarchy, CPLDs sit between discrete 74-series glue logic and more complex FPGAs; they are deterministic, run from power-up with zero configuration latency, and provide predictable timing for decoder, bus-interface, and control tasks. The ATF1502AS family targets 5V legacy system designs where modern 3.3V FPGAs are not compliant with the input voltage rails. Key differentiating features of the ATF1502AS-10AU44 include 32 macrocells, up to 32 bidirectional I/O pins plus 4 dedicated input pins, an enhanced routing switch matrix that improves usable gate count, pin-to-pin propagation delay of 10 ns, system frequency up to 100 MHz, and zero-power standby support. The device offers fast in-system programming (ISP) via JTAG, allowing firmware revision updates without removing the part from the board. Power supply operates from 4.5V to 5.5V with typical I/O 5V tolerance. The ATF1502AS-10AU44 is pin-compatible with industry-standard 44-pin TQFP CPLDs and slots into legacy footprints where migration from older Atmel and third-party 32-macrocell CPLDs is required. The enhanced routing switch matrix increases the odds of successful pin-locked design modifications compared to first-generation CPLD architectures. Typical applications include 5V bus interface bridging, address decoding for legacy microcontrollers, glue logic replacement in industrial controllers, I/O expansion for 8-bit and 16-bit MCUs, and power-on sequencing logic in mixed-voltage systems. The 5V-tolerant I/Os allow direct connection to TTL/CMOS logic without external level shifters. For designers, the most critical design tip is to budget adequate decoupling (100 nF X7R plus 10 uF bulk) right at the VCC pins, because CPLD outputs can drive simultaneous switching edges that inject supply noise. Designers should also confirm that any migrated 3.3V firmware does not violate the 5.5V absolute-maximum VCCIO rating during in-circuit programming. This page consolidates distributor pricing, verified same-package drop-in alternatives, and applied design notes not found in the standalone manufacturer datasheet, helping engineers accelerate 5V CPLD selection and sourcing decisions.

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ATF1504ASL-25AU44 - 64 Macrocells, 25ns, 5V ISP CPLD | Microchip
ATF1504ASL25AU44

ATF1504ASL-25AU44 - 64 Macrocells, 25ns, 5V ISP CPLD | Microchip

The Microchip Technology ATF1504ASL-25AU44 is a 5V, high-performance, In-System Programmable (ISP) Complex Programmable Logic Device (CPLD) from the ATF15xx family, delivering 64 macrocells in a 44-pin TQFP (10x10 mm) surface-mount package. It offers 1.5K equivalent gates, a maximum propagation delay of 25 ns (tPD), and 32 user I/O pins, operating from a single 4.5 V to 5.5 V supply across the industrial -40 C to +85 C temperature range. A CPLD (Complex Programmable Logic Device) is a non-volatile, reprogrammable digital logic IC that combines the instant-on, deterministic timing of PAL/GAL architectures with denser logic capacity, sitting in the programmable logic hierarchy between simple SPLDs and larger FPGAs. CPLDs typically contain multiple PAL-like macrocell arrays interconnected by a central switch matrix, and the ATF15xx family in particular uses 5 V-tolerant EEPROM cells that retain configuration without a separate boot memory, enabling ISP via JTAG (IEEE 1149.1). Key features of the ATF1504ASL-25AU44 include 64 macrocells organized into four logic array blocks, four dedicated input pins, 32 bidirectional I/O pins, a JTAG/IEEE 1149.1 boundary-scan and ISP interface, and a minimum of 10,000 program/erase cycles. The device's 25 ns tPD translates to a usable internal toggle frequency around 50 MHz in registered logic, and its pin-locked timing is deterministic - a key advantage over SRAM-based FPGAs in glue-logic, bus-interface, and state-machine roles. Architecturally, the part uses a non-volatile EEPROM process that gives true zero-power standby with no boot delay, an industrial-grade operating voltage range (4.5 V to 5.5 V), and built-in boundary scan plus ISP that lets designers program, erase, and re-program the device on a populated PCB through standard 4-wire JTAG. Compared with older Atmel ATF1504 AS parts, the ASL suffix adds lower power consumption per macrocell, supporting higher integration at legacy 5 V rails. Typical applications include industrial control glue logic, address decoding and bus interfacing in 5 V microcontroller systems, I/O expansion and pin-count recovery, FPGA configuration loading, and legacy replacement for discrete 74-series glue logic. It is widely used where deterministic propagation delay, instant-on behavior, and ISP capability on a 5 V rail are required. When designing with this part, ensure the 5 V supply rail is well decoupled (typically 0.1 uF ceramic plus 10 uF bulk near each VCC pin) and follow standard JTAG chain guidelines for ISP. Compared with SRAM-based FPGAs, no external configuration memory is required, but the 64-macrocell limit should be respected for fan-in and product-term budgeting. This page synthesizes distributor pricing (as of 2026-10-07), verified drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, giving a faster engineering decision path for the ATF1504ASL-25AU44.

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ATF1504ASL-25AU44 - 64-Macrocell 5V ISP CPLD, 25ns | Microchip
ATF1504ASL-25AU44

ATF1504ASL-25AU44 - 64-Macrocell 5V ISP CPLD, 25ns | Microchip

The Microchip Technology ATF1504ASL-25AU44 is a 64-macrocell, in-system programmable (ISP) complex programmable logic device (CPLD) with a 25 ns propagation delay and 60 MHz maximum clock frequency, housed in a 44-pin TQFP package. It operates from a single 4.5 V to 5.5 V supply and provides 32 inputs/I/Os (68 user I/O pins per the device datasheet summary), 64 registers, and 64 macrocells in a low-power "L" process variant. A complex programmable logic device (CPLD) is a non-volatile, electrically erasable digital logic IC that integrates multiple PAL-like macrocell arrays on a single die, with a programmable AND/OR interconnect fabric in between. CPLDs sit between simple SPLD/GAL devices and larger FPGAs in the programmable-logic hierarchy, and are used for glue logic, bus interfacing, state-machine decoding, and high-density combinatorial replacement where deterministic timing and instant-on behavior are required. The ATF15xx series in particular is a 5 V legacy family known for ISP and high pin-keeper drive strength. Key features of this part include 25 ns pin-to-pin propagation delay (tPD), 60 MHz maximum operating frequency, a minimum of 10,000 program/erase cycles, JTAG-based IEEE 1149.1 boundary-scan and ISP, pin-keeper circuits on inputs and I/Os, and programmable power management for low-power macrocell operation. The "L" suffix denotes the lower-power process option; "A" denotes the standard 44-pin TQFP package; "U44" specifies a green / Pb-free TQFP-44 package. The device is built on Microchip/Atmel's proven electrically-erasable (EE) technology, which gives non-volatile storage of the user logic - the part functions at power-up with no external configuration PROM. Architecturally, the four logic blocks each contain 16 macrocells feeding a connected global interconnect, with per-pin output enable, slew-rate, and pin-keeper options set during programming. Typical applications include 5 V bus interface and voltage-translation logic, address decoding and chip-select generation in legacy microprocessor systems, industrial control glue logic, state-machine replacement for discrete 74xx logic, and instant-on control logic in motor drives and instrumentation. The wide 5V nature tolerance and industrial -40C to +85C temperature range also suit harsh environment controllers. When designing with this device, ensure the JTAG chain order is maintained if multiple ATF1504ASL devices share TCK/TMS/TDI, and add a 0.1 uF decoupling capacitor near each VCC pin. The ISP programming voltage is generated internally, so no external 12 V programmer supply is required. Power sequencing is straightforward due to the non-volatile configuration. This page synthesizes Microchip product-page data, distributor pricing from DigiKey/Mouser, and engineering guidance for the ATF1504ASL family - information not found in the standalone datasheet.

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ATF16LV8C-10JC - 10ns 16V8 EECMOS PLD | Microchip Technology
ATF16LV8C-10JC

ATF16LV8C-10JC - 10ns 16V8 EECMOS PLD | Microchip Technology

The Microchip Technology ATF16LV8C-10JC is a high-performance 16V8 electrically erasable programmable logic device built on EECMOS technology, with eight macrocells, a 10 ns maximum pin-to-pin delay, and a 20-pin PLCC package measuring 9 x 9 mm. It operates from 3.0 V to 5.5 V and supports both CMOS- and TTL-compatible inputs and outputs. A programmable logic device, or PLD, is a reconfigurable semiconductor used to implement digital logic functions that would otherwise require multiple gates, counters, decoders, or interface circuits. The ATF16LV8C family combines a compact 16V8 architecture with electrically erasable Flash memory, allowing the logic configuration to be programmed or rewritten after manufacture. Its architecture emulates many 20-pin PAL devices and supports registered, combinatorial, and complex logic configurations. The ATF16LV8C-10JC provides 10 ns maximum pin-to-pin delay, corresponding to a stated 83.3 MHz performance figure for the 16V8 architecture. Its eight macrocells provide flexible product-term allocation for combinational and registered functions. CMOS- and TTL-compatible interfaces simplify integration with both modern low-voltage logic families and established TTL-based equipment. Power management is particularly useful in portable or intermittently powered systems. The device offers a pin-controlled power-down mode with a maximum specified current of 5 uA, while typical standby current is 100 nA. These figures help reduce system consumption when the logic does not need to remain continuously active. Typical applications include interface control, decoder and counter logic, industrial control panels, legacy peripheral emulation, glue logic, programmable address decoding, and compact control sequencers. The 20-pin PLCC package supports through-hole assembly and socket-based legacy system maintenance, while its Flash-based configuration supports nonvolatile reusable logic. Designers should verify signal timing against the electrical characteristics for the actual operating voltage and temperature. Unused inputs should not float, power and ground connections should follow the datasheet pin-description table, and programming tools should be checked for device-family support. The ATF16LV8C-10JC is most appropriate when a compact, nonvolatile, 10 ns 16V8 PLD is required in a 20-pin PLCC footprint. This page combines the manufacturer device description, cross-reference findings, package details, and practical engineering guidance to clarify where the ATF16LV8C-10JC fits in legacy control, interface, and programmable-logic systems.

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ATF16LV8C-10JI - 10ns 8-Macrocell EE PLD | Microchip Technology
ATF16LV8C-10JI

ATF16LV8C-10JI - 10ns 8-Macrocell EE PLD | Microchip Technology

The Microchip Technology ATF16LV8C-10JI is a high-performance EECMOS electrically erasable programmable logic device with 8 macrocells, a 10 ns maximum pin-to-pin delay, and a 20-lead PLCC (J-lead) package. It operates from 3.0 V to 5.5 V, combines approximately 250 gates of logic capacity, and supports CMOS and TTL-compatible inputs. The device is programmed with development software that configures its product-term and output logic architecture for the intended circuit. An EEPLD, or electrically erasable programmable logic device, is a semiconductor that stores a fixed logic configuration in nonvolatile memory. It occupies the level between discrete gates and a field-programmable gate array in the programmable-logic hierarchy. This makes an EEPLD useful when a design needs flexible Boolean logic, several registered outputs, or a configuration that can be changed during development without replacing the device. The ATF16LV8C architecture includes eight macrocells, with each output allocated eight product terms and configurable operating modes selected by the programming software. It emulates many 20-pin PAL devices and incorporates a superset of several common 16R8-style architectures. Pin-controlled power-down can reduce supply current to approximately 5 uA, while typical CMOS standby current is approximately 100 nA. These characteristics make the device suitable for power-conscious control and interface logic. The 10 ns speed grade supports a maximum 100 MHz operating rate in the specified architecture. Operation across 3.0 V to 5.5 V provides compatibility with 3.3 V and 5 V systems, while CMOS- and TTL-compatible inputs simplify interfacing with mixed-voltage logic. The 20-pin J-lead PLCC package is a surface-mount format with a 9 mm by 9 mm body, offering a robust industrial package option rather than a fragile leaded package. Typical uses include industrial control, interface decoding, address decoding, state-machine implementation, display and keypad control, and compact glue logic around microcontrollers or memory devices. The eight macrocells are particularly useful when one or more registered combinational functions must be consolidated into a small, programmable footprint. When laying out the circuit, keep programming-device connections unobstructed and follow the manufacturer's package and termination guidance. Confirm output-drive requirements, unused input states, and supply decoupling for the selected logic levels. Because the device is configuration-dependent, validate the programmed equations and timing in the final system rather than assuming that identical package assignments imply identical behavior across every PLD variant. This product summary combines the ATF16LV8C device architecture, package characteristics, speed grade, and verified replacement information to support design selection. It also identifies the practical constraints that matter when using a small EEPLD in modern embedded systems.

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