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W634GU6RB-11TR - 4Gb DDR3L SDRAM 933MHz | Winbond
W634GU6RB-11TR

W634GU6RB-11TR - 4Gb DDR3L SDRAM 933MHz | Winbond

The W634GU6RB-11TR is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 933 MHz (DDR3L-1866) with a CAS latency of 13, and features a parallel interface with a 20 ns access time. The device is housed in a compact 96-ball VFBGA (7.5x13 mm) package, making it suitable for space-constrained applications requiring high memory density. DDR3L (Double Data Rate 3 Low Voltage) SDRAM is a type of synchronous dynamic random-access memory that operates at a lower voltage (1.35V) compared to standard DDR3 (1.5V), reducing power consumption by up to 20% while maintaining similar performance. It is part of the memory hierarchy in computing systems, serving as the main working memory for processors, and is widely used in laptops, embedded systems, networking equipment, and industrial applications. Key features of the W634GU6RB-11TR include support for 1.35V operation (with 1.5V compatibility), auto self-refresh, auto precharge, data mask, write leveling, ZQ calibration, asynchronous reset, and dynamic on-chip termination (ODT). These features enhance signal integrity and simplify system design. The device is RoHS compliant and halogen-free, meeting environmental standards. Technically, the W634GU6RB-11TR uses a 96-ball VFBGA package with a 0.8mm ball pitch, providing excellent thermal and electrical performance. The 933 MHz clock rate enables data rates up to 1866 MT/s, delivering high bandwidth for demanding applications. The device supports a temperature range of -40°C to +95°C, making it suitable for industrial environments. Typical applications include embedded computing, networking routers and switches, industrial automation, and high-performance consumer electronics. Its low voltage and high density make it ideal for power-sensitive designs. When designing with this memory, ensure proper decoupling capacitors near the VDD and VDDQ pins, and follow the PCB layout guidelines in the datasheet to minimize signal integrity issues at high speeds.

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W634GU6RB-12 - 4Gb DDR3L SDRAM x16 933MHz | Winbond
W634GU6RB-12

W634GU6RB-12 - 4Gb DDR3L SDRAM x16 933MHz | Winbond

The W634GU6RB-12 is a 4Gbit DDR3L SDRAM from Winbond Electronics, organized as 256M x 16, operating at 1.35V with a parallel interface. It is housed in a 96-ball VFBGA (7.5x13mm) package and supports DDR3L-1600 (11-11-11) speed grade at 933 MHz clock. This memory IC is designed for high-bandwidth applications requiring low power consumption and high reliability. DDR3L SDRAM is a type of double data rate synchronous dynamic random-access memory that operates at a lower voltage (1.35V) compared to standard DDR3 (1.5V), reducing power consumption by up to 20% while maintaining similar performance. It is part of the DDR3 memory family, which uses 8n-prefetch architecture and on-die termination to achieve high data rates. DDR3L is widely used in mobile, embedded, and industrial systems where power efficiency is critical. Key features include a 4Gbit density, x16 organization, 933 MHz clock speed (DDR3L-1600), 20 ns tRCD, and a 96-ball VFBGA package. The device supports industrial temperature grades: the -12I grade guarantees -40°C to 95°C case temperature, and the -12J grade guarantees -40°C to 105°C. It is RoHS compliant and halogen-free, meeting environmental standards. The W634GU6RB-12 utilizes advanced DRAM process technology, offering high-speed data transfer with low power consumption. The 8n-prefetch architecture enables burst lengths of 8, and the on-die termination (ODT) improves signal integrity. The device includes programmable CAS latency, burst length, and output drive strength, providing flexibility for system optimization. Typical applications include networking equipment, industrial automation, embedded computing, and consumer electronics such as set-top boxes and smart TVs. The low voltage and high density make it ideal for space-constrained designs requiring large memory capacity. When designing with this device, ensure proper decoupling capacitors near the VDD and VDDQ pins, and follow the PCB layout guidelines in the datasheet to minimize signal integrity issues. The device requires a 1.35V supply and a separate VDDQ supply, which should be well-regulated.

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W634GU6RB09I - 4Gb DDR3L SDRAM x16 1066MHz | Winbond
W634GU6RB09I

W634GU6RB09I - 4Gb DDR3L SDRAM x16 1066MHz | Winbond

The W634GU6RB09I is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 1.067 GHz (DDR3L-2133) with a CAS latency of 20 ns, and is housed in a 96-ball VFBGA (7.5x13 mm) package. This device is designed for low-voltage operation at 1.35V, making it suitable for power-sensitive applications such as mobile devices, embedded systems, and networking equipment. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard DDR3 (1.5V). It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high bandwidth. DDR3L is widely used in laptops, servers, and industrial applications where energy efficiency is critical. Key features include a 4Gbit density, x16 data bus width, 1.067 GHz maximum clock speed, and industrial temperature range (-40°C to +95°C). The device supports burst lengths of 8 and 4, on-die termination (ODT), and programmable CAS latency. It is RoHS compliant and lead-free, meeting environmental standards. Technically, the W634GU6RB09I uses a 96-ball VFBGA package with a 0.8mm ball pitch, enabling high-density mounting on PCBs. The memory core is based on advanced DRAM process technology, providing high reliability and performance. The device includes auto-refresh and self-refresh modes for low-power standby, and supports DLL (Delay-Locked Loop) for precise timing. Typical applications include embedded computing, networking routers, industrial automation, and consumer electronics such as set-top boxes and smart TVs. Its low voltage and high density make it ideal for designs requiring large memory capacity with minimal power draw. When designing with this component, ensure proper decoupling capacitors near the power pins and follow the layout guidelines in the datasheet to minimize signal integrity issues. The device requires a 1.35V supply and a separate VDDQ for I/O, which should be regulated accurately.

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W634GU6RB09J - 4Gb DDR3L SDRAM x16 1066MHz | Winbond
W634GU6RB09J

W634GU6RB09J - 4Gb DDR3L SDRAM x16 1066MHz | Winbond

The Winbond W634GU6RB09J is a 4Gbit DDR3L SDRAM organized as 256M x 16, operating at 1.35V with a data rate of 1066MHz (DDR3L-2133). It comes in a 96-ball VFBGA (7.5x13mm) package, offering a compact footprint for space-constrained designs. This memory IC is designed for high-bandwidth applications requiring low power consumption, making it ideal for mobile, embedded, and networking systems. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard 1.5V DDR3. It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high throughput. DDR3L is backward-compatible with DDR3 and is widely used in laptops, servers, and industrial electronics where energy efficiency is critical. Key features include a 4Gbit density, x16 organization, 1.067 GHz clock speed, and a CAS latency of 20 ns. The device supports on-die termination (ODT), programmable CAS latency, and burst lengths of 8 and 4. It operates over a temperature range of 0°C to +95°C (case temperature) and is RoHS compliant. The 96-VFBGA package measures 7.5x13mm with a 0.8mm ball pitch, enabling high-density PCB layouts. Technically, the W634GU6RB09J uses a 30nm-class process technology, achieving low power and high speed. It features internal calibration for ZQ, write leveling, and read leveling to ensure signal integrity at high frequencies. The device supports auto-refresh and self-refresh modes, reducing standby power. Its low voltage operation and advanced power management make it suitable for battery-powered devices. Typical applications include mobile computing, networking equipment, industrial automation, and consumer electronics such as set-top boxes and smart TVs. The high density and low power make it ideal for systems requiring large memory capacity with minimal energy consumption. When designing with this component, ensure proper decoupling capacitors near the power pins and follow the layout guidelines in the datasheet to maintain signal integrity at 1066MHz. The device requires a 1.35V supply and a separate VDDQ, which should be regulated accurately.

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W634GU6RB11I - 4Gb DDR3L SDRAM x16 933MHz | Winbond
W634GU6RB11I

W634GU6RB11I - 4Gb DDR3L SDRAM x16 933MHz | Winbond

The W634GU6RB11I is a 4Gbit DDR3L SDRAM memory IC from Winbond Electronics, organized as 256M x 16 bits. It operates at a clock frequency of 933 MHz (DDR3L-1866) with a CAS latency of 20 ns, and is supplied in a 96-ball VFBGA package measuring 7.5 x 13 mm. This device is designed for low-voltage operation at 1.35V, reducing power consumption by approximately 15% compared to standard 1.5V DDR3, making it ideal for power-sensitive applications. DDR3L SDRAM (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory that transfers data on both edges of the clock signal, effectively doubling the data rate. It operates at a lower voltage (1.35V) than standard DDR3 (1.5V), offering improved energy efficiency. DDR3L is part of the DDR SDRAM family, which includes DDR, DDR2, DDR3, and DDR4, and is widely used in computing, networking, and embedded systems where high bandwidth and low power are critical. Key features of the W634GU6RB11I include a parallel interface with a 16-bit data bus, support for industrial temperature range (-40°C to +95°C), and compatibility with JEDEC DDR3L standards. The device offers burst lengths of 8 and 4, on-die termination (ODT), and programmable CAS latency. Its low-voltage operation and high density make it suitable for applications requiring large memory capacity with minimal power draw. The W634GU6RB11I utilizes advanced DRAM process technology, achieving high-speed data transfer while maintaining low power consumption. The 96-ball VFBGA package provides excellent thermal and electrical performance, with a compact footprint suitable for space-constrained designs. The device supports auto-refresh and self-refresh modes, ensuring data integrity with minimal power consumption during idle periods. Typical applications include networking equipment (routers, switches), industrial automation, embedded computing, and consumer electronics such as set-top boxes and smart TVs. Its industrial temperature rating makes it suitable for harsh environments, while the low-voltage operation extends battery life in portable devices. When designing with this component, ensure proper decoupling capacitors are placed near the power pins to minimize noise. The VFBGA package requires careful PCB layout to route the fine-pitch balls, and the DDR3L interface should be terminated according to JEDEC guidelines to maintain signal integrity.

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W634GU6RB11J - 4Gb DDR3L SDRAM x16 933MHz | Winbond
W634GU6RB11J

W634GU6RB11J - 4Gb DDR3L SDRAM x16 933MHz | Winbond

The Winbond W634GU6RB11J is a 4Gbit DDR3L SDRAM organized as 256M x 16, operating at a clock frequency of 933 MHz (DDR3L-1866) with a data rate of 1866 MT/s. It is housed in a 96-ball VFBGA package (7.5x13 mm) and operates from a 1.35V supply, making it suitable for low-power applications. The device supports parallel interface with a burst length of 8 and features a 20 ns CAS latency. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard DDR3 (1.5V). It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high bandwidth. DDR3L is commonly used in mobile devices, embedded systems, and industrial applications where power efficiency is critical. Key features include auto self-refresh, auto precharge, data mask, write leveling, ZQ calibration, asynchronous reset, and dynamic on-chip termination (DTC). These features enhance signal integrity and simplify system design. The device supports industrial temperature range from -40°C to +95°C, making it suitable for harsh environments. It is RoHS compliant and halogen-free, aligning with environmental standards. Technically, the W634GU6RB11J uses a 96-ball VFBGA package with a 0.8mm ball pitch, providing excellent thermal and electrical performance. The memory array is organized in 8 banks, and the device supports programmable CAS latency (CL) and additive latency (AL) for flexible timing. The on-die termination (ODT) feature improves signal quality by matching impedance, reducing reflections on the data bus. Typical applications include networking equipment, industrial automation, medical devices, and embedded computing systems where high-density, low-power memory is required. The 4Gb density and x16 organization make it ideal for applications needing moderate memory capacity with a wide data bus. When designing with this device, ensure proper decoupling capacitors near the VDD and VDDQ pins to minimize power supply noise. Also, follow the JEDEC DDR3L layout guidelines for signal integrity, including controlled impedance traces and proper termination.

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W634GU6RB12I - 4Gb DDR3L SDRAM x16 800MHz | Winbond
W634GU6RB12I

W634GU6RB12I - 4Gb DDR3L SDRAM x16 800MHz | Winbond

The W634GU6RB12I is a 4Gbit DDR3L SDRAM organized as 256M x 16, operating at 1.35V with a data rate of 800MHz (DDR3L-1600). It is housed in a 96-ball VFBGA (7.5x13mm) package and is designed for industrial temperature range (-40°C to +95°C). This memory IC is ideal for applications requiring high-density, low-power volatile storage. DDR3L (Double Data Rate 3 Low Voltage) is a type of synchronous dynamic random-access memory (SDRAM) that operates at 1.35V, reducing power consumption by about 20% compared to standard DDR3 (1.5V). It is part of the DDR3 family, which uses double data rate signaling to transfer data on both edges of the clock, achieving high bandwidth. DDR3L is commonly used in computing, networking, and embedded systems where power efficiency is critical. Key features include a parallel interface with 800MHz clock speed, 20ns row cycle time, and support for industrial temperature grades. The device is RoHS compliant and halogen-free, meeting environmental standards. The 96-ball VFBGA package offers a compact footprint suitable for space-constrained designs. The W634GU6RB12I utilizes advanced DRAM process technology, providing reliable performance with low power consumption. It supports standard DDR3L features such as on-die termination (ODT), programmable CAS latency, and burst lengths of 8. The industrial temperature grade ensures operation in harsh environments. Typical applications include industrial automation, networking equipment, embedded computing, and automotive infotainment systems. Its high density and low power make it suitable for memory-intensive tasks in these domains. When designing with this device, ensure proper decoupling and signal integrity practices are followed, as high-speed memory interfaces require careful PCB layout to minimize noise and reflections.

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W634GU6RB12J - 4Gb DDR3L SDRAM 933MHz | Winbond
W634GU6RB12J

W634GU6RB12J - 4Gb DDR3L SDRAM 933MHz | Winbond

The W634GU6RB12J is a 4Gbit DDR3L SDRAM from Winbond Electronics, organized as 256M x 16 and operating at 1.35V. It features a parallel interface with a clock speed of 933 MHz (DDR3L-1866) and a CAS latency of 20 ns. The device is housed in a 96-ball VFBGA package (7.5x13 mm) and is designed for high-bandwidth memory applications. DDR3L SDRAM is a type of dynamic random-access memory that operates at a lower voltage (1.35V) compared to standard DDR3 (1.5V), reducing power consumption while maintaining high data rates. It is part of the DDR3L memory family, which is widely used in computing, networking, and industrial applications where power efficiency is critical. Key features include a 4Gbit density, x16 organization, 933 MHz clock speed, and support for the DDR3L-1866 specification. The device offers a burst length of 8 and supports on-die termination (ODT) for improved signal integrity. It operates over a temperature range of -40°C to +105°C (TCASE) for the 12J industrial plus grade, making it suitable for harsh environments. The W634GU6RB12J utilizes advanced DRAM process technology to achieve high speed and low power. It includes features such as programmable CAS latency, write leveling, and self-refresh modes to optimize performance and power consumption. The 96-ball VFBGA package provides excellent thermal and electrical performance. Typical applications include embedded systems, networking equipment, industrial automation, and automotive infotainment. The low voltage and high speed make it ideal for power-sensitive designs that require high memory bandwidth. When designing with this device, ensure proper decoupling and signal integrity practices are followed. The DDR3L interface requires careful PCB layout to minimize crosstalk and maintain signal quality at high speeds.

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W681308DG - USB Audio Controller 16-bit 48-LQFP | Nuvoton
W681308DG

W681308DG - USB Audio Controller 16-bit 48-LQFP | Nuvoton

The Nuvoton W681308DG is a USB audio controller IC with an integrated 16-bit audio codec, housed in a 48-pin LQFP (7x7 mm) surface-mount package. As a member of the Winbond/Nuvoton W6813 series of USB audio controllers, it integrates a USB controller, audio codec, and embedded microcontroller into a single chip for USB audio peripheral designs. A USB audio controller is a mixed-signal device that implements the USB audio class protocol on the digital side and an audio codec (codec = coder-decoder) on the analog side. Within the system hierarchy, it sits between a general-purpose USB microcontroller and a dedicated audio codec: it handles USB enumeration, audio streaming, clocking, and sample-rate conversion, while also providing microphone and speaker signal paths. This integration reduces bill-of-materials count compared to a discrete USB MCU plus external codec solution. Key features of the W681308DG include a 16-bit audio data path, USB full-speed audio transport, integrated microphone and speaker audio channels, and a compact 7x7 mm 48-LQFP footprint that supports consumer peripheral form factors. The device operates from a 3.3 V supply, consistent with the family datasheet description of the W681308 series as a 3.3 V part. Architecturally, the W681308 combines an 8-bit CISC microcontroller core with on-chip program memory and a hardwired USB audio function block. The codec front end handles anti-aliasing filtering, ADC for microphone inputs, and DAC for speaker outputs, while the MCU firmware manages HID interfaces, mute/volume controls, and other USB descriptor behavior. Refer to the manufacturer datasheet for precise clock, PLL, and interface specifications. Typical applications include USB headset and headphone amplifiers, desktop microphone arrays, USB speakerphones, VoIP handsets, and general USB audio dongles where a single-chip, low-cost USB audio solution is required. A key design consideration is analog layout: the microphone preamp and DAC outputs are sensitive to digital return-path noise, so a solid ground plane, careful separation of analog and digital traces, and proper decoupling of the 3.3 V rail per the manufacturer datasheet recommendations are essential for a low-noise result. This page synthesizes distributor sourcing data, datasheet references, and practical design notes not found in the manufacturer datasheet.

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W78E051C40PL - 8-bit 8051 MCU, 4KB Flash, 40MHz, 44-PLCC | Nuvoton
W78E051C40PL

W78E051C40PL - 8-bit 8051 MCU, 4KB Flash, 40MHz, 44-PLCC | Nuvoton

The Nuvoton/Winbond W78E051C40PL is an 8-bit 8051-compatible microcontroller operating up to 40 MHz, integrating 4 KB of in-system programmable Flash EPROM and 128 bytes of on-chip RAM in a 44-pin PLCC package. According to the manufacturer datasheet (publication release November 10, 2006, Revision A4), the W78E051C40PL exposes four 8-bit bi-directional bit-addressable I/O ports (P0-P3) plus an additional 4-bit P4 port, two 16-bit timer/counters, a full-duplex UART, and an enhanced 6-source/2-level interrupt controller. The "40" suffix denotes the 40 MHz top clock, while the "PL" package code designates the 44-lead Plastic Leaded Chip Carrier (JEDEC MS-018). Programming is supported via standard 8051 tools because the instruction set is binary-compatible with the industry-standard MCS-51 core. An 8051 microcontroller (technically an MCS-51 family MCU) is an 8-bit Harvard-architecture CISC microcomputer originally introduced by Intel in 1980; despite its age the family remains popular in cost-sensitive, deterministic, deeply embedded applications because of its tiny footprint, predictable interrupt latency, and unparalleled third-party tool support. As a Flash EPROM variant the W78E051C family sits at the highest tier of the classic 8051 hierarchy: mask-ROM < OTP EPROM < Flash EPROM, with Flash enabling ISP and field-upgradeable firmware. In the broader taxonomy, an MCU is a programmable subset of a microprocessor and, more generally, a digital integrated circuit under power management and embedded-computing classifications. Key features include 4 KB Flash program memory, 128 bytes internal RAM, 36 general-purpose digital I/O lines, two 16-bit timers/counters, one UART with framing-error detection, six interrupt sources with two priority levels, on-chip oscillator with external crystal, power-saving Idle and Power-Down modes, and an in-system programming (ISP) interface through the serial port. According to the datasheet the device supports a wide operating frequency range, allowing software to reduce clock speed dynamically for power-sensitive applications. Architecturally, the W78E051C uses a 12-clock-per-machine-cycle core (the classic 8051 convention) with separate 64 KB program and 64 KB external-data address spaces, plus a 256-byte internal RAM space split between register banks, bit-addressable area, and user RAM. The Flash memory subsystem provides on-chip page-erase and byte-program capability, supporting in-application firmware updates via the UART bootloader on PLCC-package variants. Typical applications include industrial control subsystems, home appliance mainboards, keyboard/mouse scanners, sensor signal conditioning, low-cost USB bridges, LED display drivers, and legacy 8051 firmware upgrades. The wide frequency range and low-power Idle/Power-Down modes make it suitable for both mains-powered controllers and battery-backed utilities. Design-wise, ensure the EA/VPP pin is tied to VCC for internal-Fetch operation, or driven to +12 V only during parallel programming. Decouple VCC and AVCC (if present) with 0.1 microfarad ceramic capacitors placed within 5 mm of the pins to suppress switching noise during oscillator start-up and ISP writes. This page synthesizes distributor pricing, cross-reference drop-in alternatives (Nuvoton W78E052 and W78E058 variants) and practical PCB layout notes not consolidated in the manufacturer datasheet.

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W78E051DFG - 40MHz 8052 8-Bit MCU with 4KB Flash | Nuvoton
W78E051DFG

W78E051DFG - 40MHz 8052 8-Bit MCU with 4KB Flash | Nuvoton

Nuvoton Technology Corporation W78E051DFG is an 8-bit 8052-compatible microcontroller operating up to 40 MHz, with 4 KB of flash program memory and 36 general-purpose I/O pins in a 44-pin QFP package. Its stated operating supply range is 2.4 V to 5.5 V, making it suitable for embedded control systems operating from a regulated 5 V rail or other compatible source. An 8052 microcontroller is an embedded microcontroller architecture combining a small general-purpose CPU core with program memory, data memory, parallel I/O, serial communication, timers, and system-control peripherals. The W78E051 series belongs to the broader microcontroller category, which sits above processor cores and below embedded-control semiconductor solutions used in industrial products, appliances, access controls, and compact automation equipment. The W78E051DFG provides 4 KB (4K x 8) of flash program memory for firmware storage and an operating speed of 40 MHz. Its listed peripherals include a power-on reset, watchdog timer, UART/USART interface, and external bus interface. The 36 available I/O pins provide substantial parallel connectivity for discrete inputs, output control, indicators, relays, and external interface signals without requiring a larger package. The device operates from 2.4 V to 5.5 V and is specified for industrial temperature conditions from -40 °C to 70 °C. Flash memory allows firmware to remain resident without a separate external memory component, simplifying both PCB routing and production programming. The 40 MHz clock rate also gives the 8-bit CPU more instruction throughput than lower-frequency 8051-class devices while retaining the familiar programming model. Typical uses include appliance controllers, keyboard and human-interface panels, access-control equipment, small motor or relay controllers, industrial interface modules, and compact embedded products. Its combination of 36 I/O pins, serial communication, external bus support, and watchdog protection is particularly useful when a design needs flexible parallel connectivity without a high-pin-count microcontroller package. When designing around the W78E051DFG, verify every peripheral, clock option, interrupt vector, and electrical limit against the current manufacturer datasheet before schematic release. The supplied search evidence confirms the principal specifications but does not expose the complete pin map, memory map, timing diagrams, or electrical characteristics needed for a production design. This page consolidates the verified distributor information, core MCU specifications, sourcing links, and design limitations for the W78E051DFG. It also separates confirmed facts from unavailable engineering data, helping engineers establish whether the 44-pin 8052-compatible device is appropriate before beginning a drop-in PCB or firmware evaluation.

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W78E051DLG - 8-Bit 40MHz 4KB Flash 8051 MCU | Nuvoton
W78E051DLG

W78E051DLG - 8-Bit 40MHz 4KB Flash 8051 MCU | Nuvoton

The Nuvoton Technology Corporation W78E051DLG is an 8-bit 8052-compatible W78 series microcontroller with a 40 MHz operating frequency, 4 KB of programmable flash memory organized as 4K x 8, and a 48-pin LQFP package. It operates from a 2.4 V to 5.5 V supply, supporting both 5 V and 3.3 V embedded systems. A microcontroller, or MCU, is a semiconductor that integrates a CPU core, flash program memory, data memory, and peripherals into one device. Within the embedded-control hierarchy, the W78E051DLG belongs to the 8-bit 8051/8052 MCU family rather than a 16-bit or 32-bit microcontroller. Its role is to execute embedded firmware, monitor digital inputs, drive outputs, and communicate with sensors, actuators, human-interface devices, and industrial peripherals. The key specifications of this device are a 40 MHz clock, 4 KB flash for firmware storage, and a 2.4 V to 5.5 V operating range. Verified distributor listings describe the part as an 8052 W78 microcontroller with 4K x 8 flash and Pb-free construction. The 48-pin LQFP-48 package measures 7 mm by 7 mm and provides a practical pin count for external interfacing, clocking, reset, programming, and mixed-signal control applications. The 8052-compatible architecture is appropriate for cost-sensitive embedded designs that rely on established compiler, debugger, and programming-tool ecosystems. At 40 MHz, the processor offers considerably more instruction throughput than legacy 8-bit systems operating near 12 MHz or 24 MHz. The available verified data does not state the RAM capacity, peripheral set, oscillator options, ADC performance, or timer configuration, so those parameters should be confirmed in the manufacturer datasheet before final schematic or firmware design. Typical uses for the W78E051DLG include compact industrial controllers, appliance control boards, data-acquisition modules, LED and display systems, and 8-bit sensor-hub designs. The 36 I/O indicated in one distributor listing provides a practical basis for digital control, while the 4 KB flash limit makes the device best suited to firmware with modest code size. Applications requiring substantial buffer storage, high-resolution analog conversion, or large protocol stacks should verify those requirements before committing to the part. Design planning should begin by confirming the complete pin assignment, peripheral multiplexing, and programming interface in the manufacturer datasheet. The LQFP-48 footprint also requires deliberate decoupling, clock-routing, and reset-layout planning to avoid analog-noise coupling and startup problems. Because the verified listings provide only a partial specification set, procurement decisions should not rely on distributor summaries alone. This page consolidates distributor pricing, availability, package information, and verified electrical attributes while separating confirmed data from unconfirmed parameters. It also provides a same-family drop-in comparison framework and practical design notes that are not present in a standard distributor catalog entry.

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W78E051DPG - 8-Bit 40MHz 4KB Flash MCU | Nuvoton
W78E051DPG

W78E051DPG - 8-Bit 40MHz 4KB Flash MCU | Nuvoton

Nuvoton Technology Corporation W78E051DPG is an 8-bit 8052-compatible microcontroller operating up to 40 MHz, with 4 KB of Flash program memory, 256 bytes of RAM, and 36 programmable I/O pins in a 44-LCC J-lead package. Its verified supply-voltage range is 2.4 V to 5.5 V, and distributor listings identify the device as Pb-free with an operating-temperature range of -40 °C to 70 °C. An 8-bit microcontroller is a compact embedded-control device whose processor, program memory, data memory, and peripherals are integrated on one semiconductor package. Within the broader hierarchy of microcontroller, embedded processor, and semiconductor, the W78 series combines an 8052-class architecture with deterministic I/O for cost-sensitive control systems. The W78E051DPG is intended for compact embedded controllers rather than high-compute systems where external memory, extensive connectivity, or large application code are required. Key characteristics include a maximum clock frequency of 40 MHz, 4 KB or 4K × 8 bits of Flash memory, 256 bytes of RAM, and 36 programmable pins. Integrated power-on reset and watchdog-timer functions are identified in the verified product listing. These resources support small control loops, digital I/O expansion, status monitoring, and basic sequencing without requiring a separate external nonvolatile-memory device for firmware storage. The device uses an 8052-compatible core and belongs to Nuvoton's W78 microcontroller family. Its 40 MHz operating capability provides substantially more instruction throughput than legacy 12 MHz 8051-class designs, while the compact 4 KB Flash budget keeps firmware architecture focused. The 36 programmable I/O pins offer a broad interface count for switches, indicators, relays, sensors, and external control logic when the board-level pin multiplexing and electrical limits are respected. Typical embedded uses include industrial control modules, appliance controllers, building equipment, small sensor nodes, and compact peripheral controllers. The 44-LCC J-lead package supports through-hole assembly and is useful when a product requires a mechanically robust package or inspection-friendly leads. The 2.4 V to 5.5 V operating range also permits integration with common low-voltage control systems, provided every connected peripheral shares a compatible logic level. The principal design trade-off is the limited 4 KB Flash and 256-byte RAM capacity. Firmware must be compact, stack depth must be checked carefully, and boundary-heavy algorithms may require a larger microcontroller. Exact pin multiplexing, peripheral behavior, reset timing, clock configuration, and absolute maximum ratings must be confirmed against the manufacturer datasheet before schematic release. This page consolidates verified distributor specifications, sourced operating limits, package information, application guidance, and procurement references. It also clearly separates verified facts from parameters that require confirmation, avoiding unsupported claims while providing a concise engineering starting point for the Nuvoton W78E051DPG.

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W78E052DDG - 40MHz 8-bit 8051 MCU | Nuvoton
W78E052DDG

W78E052DDG - 40MHz 8-bit 8051 MCU | Nuvoton

The Nuvoton Technology Corporation W78E052DDG is an 8-bit 8051-compatible CISC microcontroller operating up to 40 MHz, with 8 KB of flash program memory, 256 bytes of RAM, 36 I/O pins, and a 40-pin DIP package. It operates across the verified 2.4 V to 5.5 V supply range and supports temperature grades identified as -40°C to 70°C by Mouser and -40°C to 85°C for the W78E052D family by Nuvoton. The product is listed as Not Recommended for New Designs. An 8051-compatible microcontroller is an embedded controller that executes instruction sets designed around the established 8051 architecture while extending it with modern flash memory and configurable peripheral resources. Within the product hierarchy, this device is a microcontroller, an embedded processing IC, and ultimately a semiconductor. Nuvoton describes the W78E052D family as a 6T/12T architecture configurable for compatibility with traditional 12T 8051 designs. Verified distinguishing features include an operating frequency of up to 40 MHz, 8 KB of 8K × 8 flash program memory, 256 × 8 RAM, and 36 general-purpose I/O lines. The 40-DIP package supports through-hole PCB assembly and is convenient for prototypes, legacy industrial controls, alarm systems, bar-code readers, KVM equipment, key phones, user interfaces, and IPC products. A single full-duplex UART is also identified for serial communications. The W78E052D family combines a 6T/12T selectable machine cycle with flash memory and a broad supply range. Faster 6T operation can reduce instruction-cycle timing compared with traditional 12T execution, while 12T compatibility helps preserve behavior expected by established 8051 designs. Designers must still verify oscillator, reset, timing, peripheral, and software assumptions against the manufacturer documentation before replacing an existing design. A through-hole DIP-40 MCU is most appropriate where manual assembly, socketed prototypes, repairability, or stable industrial availability matter more than minimum PCB area. The DIP package exposes 36 I/O pins alongside control and power functions, allowing substantial parallel digital connectivity but requiring careful planning for board height and connector clearance. The primary engineering trade-off is lifecycle status: Nuvoton marks the W78E052D family Not Recommended for New Designs. Existing supported programs may continue using available stock, but new designs should first evaluate the W78E054D or another currently recommended MCU and perform a complete software, electrical, and package migration review. This page consolidates distributor pricing, lifecycle information, application context, verified specifications, and drop-in assessment data that are distributed across manufacturer and distributor pages. Engineering decisions should remain anchored to the manufacturer datasheet rather than distributor summaries alone.

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W78E052DFG - 8-Bit 8051 8KB MCU | Nuvoton | Embedded Control
W78E052DFG

W78E052DFG - 8-Bit 8051 8KB MCU | Nuvoton | Embedded Control

The Nuvoton Technology Corporation W78E052DFG is an 8-bit 8051-compatible microcontroller with 8KB of Flash program memory, a 2.4V to 5.5V operating-voltage range, and support for frequencies up to 40MHz according to the supplied product references. It is offered in a 44-pin QFP package. The device belongs to the W78E052D family of configurable 6T/12T 8051 microcontrollers and is intended for embedded control applications involving security and alarm systems, barcode readers, KVM equipment, telephones, user interfaces, and industrial control products. An 8051 microcontroller is an embedded processing IC that combines a compact 8-bit CPU, program memory, data memory, and peripherals on one device. In the product hierarchy, the W78E052DFG is a microcontroller, which is a type of embedded processor and system-on-chip used in power management, industrial automation, access control, human-interface, and communications equipment. Its traditional 8051 architecture can support established toolchains and software while the W78E052D family adds configurable 6T or 12T operation. The principal documented features include 8KB of Flash memory, operation from 2.4V through 5.5V, and compatibility with traditional 12T 8051 devices. A Globalspec listing identifies the device as an 8-bit, 40MHz MCU with 8KB of Flash. Manufacturer information describes the W78E052D as configurable for 6T or 12T operation, making it suitable for designs that require a familiar 8051 software model across multiple package and frequency configurations. The W78E052DFG is specifically identified for a 44-pin QFP package. This surface-mount package supports compact PCB construction without requiring a through-hole socket. The supplied Nuvoton Direct result lists LQFP48, PLCC44, PQFP44, TQFP44, and DIP40 as package options within the broader W78E052D family; the exact package ordering code must therefore be checked against the package drawing when replacing or redesigning a board. Typical application areas include security and alarm panels, barcode-reader controllers, keyboard-video-mouse or KVM interfaces, key telephones, compact user-interface modules, and industrial control equipment. For these systems, the important selection criteria are the 8KB code-memory capacity, 2.4V to 5.5V supply range, 8-bit processing capability, and availability of the required package and peripheral configuration. Designers should confirm the full clock, memory, peripheral, and electrical limits in the manufacturer datasheet before release. Because the family description gives broad package and temperature information, the exact ordering code must be used to confirm the device variant. The Mouser listing also specifies a Pb-free finish and a -40°C to 70°C range, while the Nuvoton product information gives a -40°C to 85°C family range, so variant-specific qualification data should control. This page consolidates the verified manufacturer description, distributor specifications, pricing reference, lifecycle status, and package information for W78E052DFG. It also distinguishes documented facts from unavailable details, providing engineers with a concise basis for initial design review while clearly identifying the datasheet and authorized distributor sources needed for final qualification.

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W78E052DLG - 8-bit 8051 MCU, 8KB Flash, 48-LQFP | Nuvoton
W78E052DLG

W78E052DLG - 8-bit 8051 MCU, 8KB Flash, 48-LQFP | Nuvoton

The Nuvoton Technology Corporation W78E052DLG is an 8-bit 8051-compatible microcontroller with 8KB flash memory, a 2.4 V to 5.5 V operating-voltage range, and a 48-LQFP package. The W78E052D family is configurable and pin-compatible with traditional 12T 8051 devices, providing a practical migration path for embedded industrial-control, security, alarm, barcode-reader, KVM, keypad, user-interface, and IPC designs. The device is offered in a Pb-free configuration according to distributor product information, and the manufacturer lists the W78E052D family as Not Recommended for New Designs (NRND). An 8-bit microcontroller is a compact embedded-controller category used to execute firmware, read inputs, control outputs, and manage system behavior in cost-sensitive electronics. Within the broader hierarchy, the W78E052DLG is a microcontroller, an embedded-processing IC, and a semiconductor designed around the established 8051 instruction set and peripheral ecosystem. Its 8KB flash capacity is suitable for small control routines and product-specific firmware, while its broad supply-voltage range supports both 3.3 V and 5 V system designs. The key verified attributes include 8-bit processing, 8KB flash, 2.4 V to 5.5 V operation, a 48-LQFP package, and a manufacturer-described 6T/12T 8051 architecture configurable for compatibility with traditional 12T 8051 designs. The -40 °C to +85 °C operating-temperature range applies to the W78E052D family, while distributor material identifies the Pb-free W78E052DLG ordering code for operation from -40 °C to +70 °C. Exact RAM, clock, peripheral, and electrical timing values should be confirmed in the manufacturer datasheet before layout or firmware deployment. Typical uses include security and alarm panels, barcode readers, KVM controllers, key phones, compact user-interface modules, and industrial-control equipment. In these systems, the microcontroller consolidates low-speed control logic while external components provide sensors, communications, displays, actuators, and power regulation. The 48-LQFP format offers enough pins for mixed signal and peripheral connectivity while remaining compatible with conventional surface-mount assembly. Designers should verify the exact pin assignments, oscillator requirements, reset behavior, port-drive limits, and decoupling recommendations against the W78E052D datasheet. Because the family is NRND, new production designs should compare current Nuvoton 8051 options, while existing production can evaluate an explicitly documented drop-in alternative only after checking timing, firmware, mixed-signal, and lifecycle requirements. This page combines verified manufacturer and distributor information, procurement data, lifecycle context, package details, and practical selection guidance. It also clearly identifies where package, timing, memory, and pricing details require confirmation rather than presenting unsupported assumptions as guaranteed specifications.

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W78E052DPG - 8-Bit 40MHz 8052 MCU | Nuvoton | PLCC-44
W78E052DPG

W78E052DPG - 8-Bit 40MHz 8052 MCU | Nuvoton | PLCC-44

Nuvoton Technology Corporation W78E052DPG is an 8-bit 8052-compatible W78 CISC microcontroller rated up to 40 MHz, with 8 KB of flash program memory, in a 44-pin PLCC package. The device operates across the broad 2.4 V to 5.5 V supply range identified in the verified distributor data, supporting both 2.5 V, 3.3 V, and 5 V system rails. Its -40 °C to +70 °C Mouser rating makes the part suitable for mainstream industrial, embedded-control, security, alarm, barcode-reader, KVM, key-phone, user-interface, and IPC equipment. An 8051-family microcontroller is a compact CISC controller within the broader embedded-processor and semiconductor hierarchy. Its instruction set and integrated program memory are optimized for control-oriented tasks rather than high-bandwidth computation. The W78E052D family combines that established 8051 execution model with selectable clock configurations, allowing designers to choose an operating frequency appropriate to the required response time and peripheral activity. The W78E052DPG provides 8 KB of flash memory organized as 8K x 8, providing on-chip program storage without an external memory device for many firmware sizes. Its maximum stated clock frequency of 40 MHz supports faster control loops and responsive peripheral handling. Operation from 2.4 V to 5.5 V also permits integration into both legacy 5 V equipment and modern 3.3 V embedded systems without requiring a separate level-shifting interface for the MCU supply. The controller uses the 8052-compatible CISC architecture identified by DigiKey and Octopart. This architecture is appropriate for industrial interfaces, keypads, alarms, readers, and compact embedded controllers where deterministic instruction execution, compact firmware support, and peripheral integration matter more than the processing power of a 32-bit MCU. The 44-pin PLCC package exposes the controller's I/O and communication resources while supporting leaded-board assembly. Typical designs include security and alarm panels, barcode readers, keyboard-video-mouse or KVM controllers, telephone keypads, user-interface controllers, and industrial IPC modules. The family is listed as NRND, so engineers should confirm availability, lifecycle expectations, and transition planning before beginning a new high-volume design. Existing equipment can continue to be supported where exact firmware and package continuity are required. For a new PCB, use the exact PLCC-44 footprint, preserve the required bypass and oscillator connections shown by the manufacturer datasheet, and validate the programmed clock configuration against the selected supply voltage. If software timing depends on instruction cycles, verify the operating-frequency limits and timing assumptions before production release. This page consolidates verified distributor specifications, lifecycle information, sourcing links, comparison criteria, and practical replacement guidance. It also distinguishes the exact W78E052DPG ordering code from related W78 devices whose memory, package, or clock characteristics may prevent a literal drop-in replacement.

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W78E054DFG - 40MHz 8-Bit 8051 MCU | Nuvoton | 16KB Flash
W78E054DFG

W78E054DFG - 40MHz 8-Bit 8051 MCU | Nuvoton | 16KB Flash

Nuvoton Technology Corporation W78E054DFG is an 8-bit 8051-compatible microcontroller operating at up to 40 MHz, with 16 KB of internal flash memory and a 44-pin PQFP package. It supports a 2.4 V to 5.5 V operating-voltage range and an industrial temperature range of -40°C to 85°C. The W78E054D family combines a traditional 8051 core with modern embedded-control functionality for security, alarm, barcode-reader, KVM, keypad, user-interface, and IPC equipment. An 8-bit 8051 microcontroller is an embedded-processing IC built around the 8051 instruction set and a compact register and memory architecture. Within the semiconductor hierarchy, it belongs to the microcontroller category, combining a CPU core, program memory, data memory, timers, serial interfaces, and interrupt-control resources on one integrated circuit. The W78E054D is marketed as a 6T or 12T 8051 MCU that is configurable and pin-compatible with traditional 12T 8051 designs. Key characteristics include an 8-bit processing engine, a maximum clock frequency of 40 MHz, and 16 KB of flash memory organized as 16K by 8 bits. Its operating range of 2.4 V to 5.5 V allows use in both 3.3 V and 5 V equipment. The 44-pin PQFP package provides a surface-mount option for compact control boards, while the -40°C to 85°C rating supports industrial-temperature deployments. The W78E054D/W78E052D series is designed to accommodate a wider frequency range with low power consumption. Its 8051-compatible architecture supports familiar instruction set and peripheral conventions, easing firmware migration from suitable legacy 8051 products. Because it is specified as configurable and pin-compatible with traditional 12T 8051 devices, board-level compatibility depends on the selected package suffix, oscillator implementation, reset circuitry, and the exact functions assigned to shared pins. Typical applications include electronic security systems, alarm panels, barcode readers, KVM controllers, industrial telephones, compact human-machine interfaces, and embedded IPC equipment. These systems benefit from the combination of 16 KB flash, 40 MHz processing capability, and a 2.4 V to 5.5 V supply range. The 44-pin PQFP format is particularly appropriate for volume-produced industrial and commercial control products that require a surface-mount assembly process. Designers should verify oscillator, reset, and peripheral connections directly against the manufacturer datasheet before replacing an existing 12T 8051. The W78E054 family is pin-compatible with traditional 12T devices when the corresponding configuration and package are used, but firmware, memory, timing, and peripheral availability must also be reviewed. The W78E054D is currently marked Not Recommended for New Designs, so existing-product maintenance may be more appropriate than new platform selection. This page combines verified manufacturer and distributor information with lifecycle context, application guidance, package constraints, and a strictly filtered drop-in comparison. It distinguishes confirmed W78E054D attributes from parameters that remain unavailable in the supplied source data, helping engineers evaluate procurement and redesign decisions without treating generic 8051 specifications as guaranteed W78E054DFG facts.

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W78E054DPG - 8-Bit 40MHz 8051 MCU | Nuvoton
W78E054DPG

W78E054DPG - 8-Bit 40MHz 8051 MCU | Nuvoton

The Nuvoton Technology Corporation W78E054DPG is an 8-bit W78 8052-compatible microcontroller with 16KB (16K x 8) Flash program memory, 256 x 8 bits of RAM, 36 I/O pins, and a maximum operating frequency of 40MHz. The device is supplied in a 44-pin PLCC package and operates from 2.4V to 5.5V over a -40°C to +85°C temperature range. An 8-bit microcontroller is a compact embedded-control processor designed to execute firmware, read inputs, and control outputs in equipment such as security systems, barcode readers, industrial controllers, user interfaces, and communication products. Within the semiconductor hierarchy, the W78E054DPG belongs to the 8051-compatible MCU family, combining a CISC instruction set with integrated program memory, data memory, timers, serial interfaces, and parallel I/O. The W78E054DPG provides 16KB of Flash memory for firmware storage and 256 x 8 bits of RAM for working data. Its 36 available I/O lines support external sensors, switches, indicators, actuators, and peripheral interfaces. The configurable 6T/12T architecture and external oscillator provide flexibility for designs based on the traditional 12T 8051 interface. Operation across 2.4V to 5.5V also accommodates legacy 2.5V, 3.3V, and 5V system environments. The maximum clock frequency of 40MHz makes the device suitable for control tasks that require deterministic embedded processing without a higher-cost application processor. Its 8052-compatible architecture supports established 8051 development methods, while the integrated Flash memory permits field-programmable firmware rather than a mask-programmed ROM implementation. The PLCC-44 package is intended for socketed or board-level assembly where serviceability and a compact leaded footprint are important. Typical applications include alarm and security panels, barcode-reader interfaces, keyboard and telephone equipment, kiosk and user-interface controllers, industrial peripherals, and compact embedded IPC systems. For these uses, the combination of 36 I/O pins, 16KB Flash, 256 x 8-bit RAM, and 2.4V to 5.5V operation provides sufficient resources for supervisory control, protocol handling, and peripheral coordination. Designers should verify oscillator, reset, and memory-interface requirements against the manufacturer datasheet before layout. Because the product is classified Not Recommended for New Designs, existing equipment maintenance can justify sourcing this NRND device, but new platforms should assess currently supported Nuvoton MCU families rather than assuming long-term availability. This product record combines manufacturer lifecycle information, distributor specifications, packaging data, and application-focused engineering guidance. It also distinguishes verified source data from unavailable commercial information, making the W78E054DPG easier to evaluate for legacy-system maintenance without presenting unverified pricing, pin assignments, or replacement claims as facts.

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W78E058DDG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton | DIP-40
W78E058DDG

W78E058DDG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton | DIP-40

Nuvoton Technology Corporation W78E058DDG is an 8-bit W78 8051-compatible microcontroller with 40 MHz operating frequency, 32 KB of flash program memory, 512 bytes of RAM, and 36 I/O pins in a 40-pin DIP package. The device is designed for embedded control applications requiring a familiar 8051 instruction set, integrated flash memory, and operation from a 2.4 V to 5.5 V supply range. Its 40-pin DIP construction supports prototyping, legacy-controller upgrades, and through-hole industrial control assemblies. An 8051-compatible microcontroller is an embedded-processing IC built around the classic 8051 core architecture. It combines a CPU, program memory, data memory, parallel I/O, timers, serial communication functions, and interrupt support on one device. The W78E058 series extends that established platform with on-chip flash rather than relying on an external program-memory device. Within the semiconductor hierarchy, this part belongs to the microcontroller class and the more specific 8-bit embedded-controller category. The principal features include 32 KB (32K × 8) flash, 512 × 8 bits of RAM, 36 I/O pins, and a maximum stated operating frequency of 40 MHz. The 2.4 V to 5.5 V operating range permits use in 2.5 V, 3.3 V, and 5 V equipment. According to the manufacturer W78E058D product information, the family is configurable and pin-compatible with traditional 12-transistor 8051 devices, while package options include DIP40. The selected W78E058DDG ordering code corresponds to the 40-pin DIP configuration. Internally, the MCU follows the CISC-oriented 8051 execution model and uses a W78 core with integrated flash program storage. The 40 MHz clock rating provides substantially more timing headroom than traditional 12 MHz-class 8051 implementations, supporting faster peripheral operation and more demanding control loops. Because interrupt-driven and polling architectures remain central to 8051 designs, existing toolchains and software practices can often be adapted, although the W78E058D documentation must be consulted for peripheral behavior and clock requirements. Typical uses include industrial controller boards, appliance control panels, keyboard and human-interface modules, programmable timers, data-acquisition controllers, and legacy peripheral upgrades. The 36 available I/O pins are especially useful when a system needs multiple digital inputs and outputs around a single controller. For designs requiring more analog functions, communication nodes, or compact surface-mount packaging, a different microcontroller family may provide a better integration level. When designing a PCB around the W78E058DDG, preserve the documented 40-pin DIP footprint and provide suitable bypass capacitance at the power pins. Validate oscillator timing, reset behavior, and I/O drive limits against the manufacturer datasheet before production. Migration from a conventional EPROM-based 8051 should also include checks for flash-specific programming, erase, and code-execution behavior. This product page consolidates verified distributor specifications, manufacturer family information, package constraints, and practical design guidance. It also distinguishes a genuine 40-pin drop-in option from candidates whose memory, speed, or package differences require schematic and firmware verification before substitution.

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W78E058DFG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton
W78E058DFG

W78E058DFG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton

The Nuvoton Technology Corporation W78E058DFG is an 8-bit 8052-compatible W78 microcontroller with a 40 MHz maximum speed and 32 KB of flash program memory in a 44-pin PQFP package. It operates from 2.4 V to 5.5 V, providing a broad supply-voltage range for embedded industrial control, IoT equipment, automation, motor-control, metering, and low-power board designs. The device also provides 512 bytes of RAM and 36 I/O pins according to the verified technical listing. An 8-bit microcontroller is a compact embedded processor designed to execute firmware that senses inputs, controls outputs, and manages communication or timing tasks. The W78E058DFG belongs to the W78 8051-family hierarchy, where the 8052 CPU combines an 8-bit CISC architecture with integrated program memory, RAM, and peripheral functions. This places it between general-purpose microcontrollers and simple fixed-function controllers for designs requiring flexible firmware-based behavior. The primary verified features are 32 KB of flash program memory, 512 bytes of internal RAM, a 40 MHz operating speed, 36 I/O pins, and a 2.4 V to 5.5 V supply range. Its 44-pin PQFP form factor supports conventional leaded-board assembly and provides more connection positions than smaller 8-bit packages. The W78E058D family is also described by Nuvoton as configurable and pin-compatible with traditional 12T 8051 designs, making the device relevant to legacy 8051 board upgrades when the electrical and peripheral requirements are matched. The W78E058D family uses an 80C51-compatible CISC architecture. Program storage in flash supports firmware revision and configuration tasks that are more difficult with mask-programmed devices, while 512 bytes of RAM support working variables, stack operations, and small data buffers. A 40 MHz clock rating provides additional timing headroom for multi-step serial communication, control loops, and periodic peripheral servicing, although actual throughput depends on the instruction mix and firmware implementation. Typical application areas include industrial controllers, connected sensing equipment, compact automation controllers, motor-control interfaces, utility or product metering, and embedded IoT nodes. The 36 available I/O positions are particularly useful when a system needs discrete sensing and actuator connections in addition to its serial interfaces. Firmware and peripheral configuration should be checked against the selected W78E058D package variant before design release. For hardware design, use the 44-pin PQFP land pattern, validate the selected oscillator and reset implementation against the manufacturer datasheet, and place bypass capacitors close to the supply pins. The permitted operating range of 2.4 V to 5.5 V must also be checked for every attached peripheral and communication device. The supplied search results do not expose the complete pin map, so pin assignments should not be inferred from generic 8051 diagrams without cross-checking the official data.

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W78E058DLG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton
W78E058DLG

W78E058DLG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton

Nuvoton Technology Corporation W78E058DLG is an 8-bit 8051-compatible microcontroller operating from 2.4 V to 5.5 V, with a 40 MHz clock, 32 KB of Flash memory, and a 48-pin LQFP package measuring 7 mm by 7 mm. The distributor data identifies this device as a Pb-free part associated with the W78E058 series and an operating temperature range of -40 °C to 70 °C. An 8-bit microcontroller is a compact embedded-control IC used to execute firmware, read inputs, control outputs, and coordinate peripheral functions. In the product hierarchy, the W78E058DLG is a microcontroller, a programmable semiconductor, and a member of Nuvoton's 8051-family devices. Its 40 MHz operating clock provides the execution rate for embedded control tasks, while its 32 KB Flash memory provides nonvolatile program storage for application firmware. The principal verified characteristics are the 8-bit CPU architecture, 40 MHz maximum clock, 32 KB Flash configuration, 512-byte Flash information area reported by LCSC, 2.4 V to 5.5 V supply range, and 48-LQFP package. These parameters position the device for compact embedded systems operating from conventional 5 V supply rails or lower-voltage circuitry within the stated range. The supplied distributor records do not expose detailed RAM size, peripheral configuration, timer channels, ADC characteristics, or package pin assignments. The W78E058DLG combines embedded processing and Flash program storage in a surface-mount LQFP-48 format. Its 7 mm by 7 mm body provides a mechanically manageable option for leaded through-hole assembly where a QFN package would be unsuitable. At 40 MHz, the device offers substantially more timing headroom than legacy 8051 systems commonly clocked at much lower frequencies, although actual response time still depends on the instruction mix and firmware workload. Typical engineering uses include compact industrial controllers, appliance-control modules, motor-control peripherals, data-acquisition front ends, and embedded sensor interfaces when the selected firmware and external circuitry match the device's documented resources. The 5.5 V maximum supply supports conventional industrial and consumer logic environments, while the 2.4 V minimum allows operation from suitably regulated lower-voltage rails. Design work should begin by confirming every required peripheral, memory resource, and package pin against the manufacturer datasheet before schematic capture. Designers should not infer ADC, timer, serial-interface, or GPIO capabilities from the family name alone because those details were not present in the supplied verified data. The 48-pin LQFP footprint also requires adequate routing space around all leads and appropriate solder-assembly profile control. This page consolidates the exact distributor-reported W78E058DLG specifications, current pricing evidence, sourcing links, and replacement-status information. It also separates verified facts from unresolved attributes, helping engineers avoid treating distributor snippets as a substitute for the complete manufacturer datasheet when making PCB or firmware decisions.

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W78E058DPG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton | PLCC-44
W78E058DPG

W78E058DPG - 8-Bit 40MHz 32KB Flash MCU | Nuvoton | PLCC-44

Nuvoton W78E058DPG is an 8-bit 8052-compatible W78 microcontroller with a 40 MHz maximum operating frequency, 32 KB (32K x 8) Flash program memory, 512 x 8 bits of RAM, and 36 I/O pins in a 44-pin PLCC package. It operates across a 2.4 V to 5.5 V supply range and is specified for -40°C to +85°C industrial-temperature applications. The device is currently Not Recommended for New Designs, so engineers should confirm availability, longevity, and any program-memory compatibility requirements before starting a new design. An 8052-compatible MCU is an embedded microcontroller built around the established 8-bit 8051/8052 instruction-set architecture. Within the product hierarchy, the W78E058D belongs to the Nuvoton 8-bit 8051 MCU family and combines a 6T/12T configurable core with Flash program memory. This architecture is appropriate for compact control systems that need deterministic control logic, moderate processing capacity, and broad peripheral integration without the cost or complexity of a higher-bit MCU. The principal device parameters include an 8-bit architecture, 40 MHz operating speed, 32 KB Flash memory, 512 bytes of RAM, 36 I/O pins, and a 44-pin PLCC package. According to Nuvoton product information, the W78E058D family is configurable and pin-compatible with traditional 12T 8051 devices. Its operating range of 2.4 V to 5.5 V also supports both lower-voltage and legacy 5 V equipment designs. The W78E058D family combines Flash program memory with an 8052-compatible core and is positioned for embedded controls including security and alarm equipment, barcode readers, KVM equipment, key phones, user interfaces, and industrial control products. The 36 available I/O pins provide substantial peripheral connectivity for sensors, displays, communication interfaces, and discrete control signals while retaining the familiar 8051 software ecosystem. For new designs, NRND status is the primary selection consideration. An existing product using the W78E058DPG can generally be maintained when its electrical, memory, timing, and software requirements remain unchanged, but designers should evaluate an active Nuvoton MCU or another currently supported platform when beginning a new production program. A firmware migration is not necessarily required for an identical device, although peripheral changes, memory layout, timing, and package differences require careful review. When laying out a 44-pin PLCC design, preserve the component's specified pin arrangement and provide suitable bypass capacitance and signal-integrity routing for external clock, reset, and I/O signals. Socketed PLCC assemblies may be convenient for prototypes or service programs, whereas exposed-pad leaded PLCC packages generally require inspection for solder-joint reliability after rework. The manufacturer's datasheet remains the controlling reference for pin names, electrical limits, and programming details. This product page consolidates verified manufacturer and distributor information, operating limits, package data, pricing availability status, and a documented drop-in comparison for the verified W78E058B40PL candidate. Unlike a raw distributor listing, it also distinguishes a confirmed pin-compatible replacement from unverified catalog recommendations and identifies where additional engineering validation is still required.

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W78E516DDG - 8-bit 8051 MCU, 64KB Flash, 40MHz | Nuvoton
W78E516DDG

W78E516DDG - 8-bit 8051 MCU, 64KB Flash, 40MHz | Nuvoton

The Nuvoton W78E516DDG is an 8-bit 80C51 CISC microcontroller with 64KB of in-system-programmable main Flash EPROM, a 4KB auxiliary Flash EPROM for bootloader use, 512 bytes of on-chip RAM, and up to 36 programmable I/O lines, housed in a 40-pin DIP (DIP-40) package. It operates from 2.4V to 5.5V and clocks at up to 40MHz across a -40C to +70C industrial range. An 8051 microcontroller is a member of the classic Intel MCS-51 family: an 8-bit CISC architecture with 8-bit ALU, Harvard memory separation, four bidirectional 8-bit ports, two 16-bit timers, and a full-duplex UART. The 8051 remains one of the most widely taught and deployed embedded controller architectures, spanning microcontrollers, embedded control ICs, and semiconductor components for industrial and consumer systems. Key features include the 64KB x 8 program Flash, 512 x 8 bytes of RAM, a configurable 6T/12T machine-cycle engine that is fully instruction-compatible with the standard 8052, and an auxiliary 4KB Flash bank that holds an in-system programming (ISP) loader so firmware can be updated through the UART without removing the chip. Wide 2.4V-5.5V operation allows the same board to run from 3.3V or 5V logic. Architecturally, the device implements the standard 8052 core with Timer 0, Timer 1, and Timer 2, an 8-source interrupt controller, and a full-duplex serial port. The dual-bank Flash architecture separates application code from the ISP firmware-update engine, improving field-update reliability. Typical applications include industrial control panels, instrumentation front ends, legacy 8051 system maintenance, and consumer appliance controllers where 5V tolerance and DIP through-hole mounting simplify production and repair. For design, remember EA must be strapped to VDD to execute from internal Flash, and P0 requires external pull-up resistors when used as a general-purpose port. This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not found in the manufacturer datasheet.

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