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The W78L054C24PL is a high-performance 8-bit microcontroller from Nuvoton Technology Corporation, built on the proven 8051 core architecture. This industrial-grade MCU features 16KB of Flash program memory and 256 bytes of RAM, operating at speeds up to 24MHz for responsive embedded control applications.

Designed for reliability in demanding environments, this microcontroller offers 36 programmable I/O pins, UART/USART connectivity for serial communication, and an EBI/EMI interface for external memory expansion. Integrated peripherals include Power-On Reset (POR) and Watchdog Timer (WDT) for enhanced system stability and fault protection.

The W78L054C24PL operates across a wide voltage range of 2.4V to 5.5V, making it suitable for battery-powered and industrial applications. With an internal oscillator and surface-mount 44-LCC (J-Lead) package, this microcontroller simplifies board design while maintaining robust performance in operating temperatures from 0°C to 70°C.

Ideal applications include: Industrial automation, embedded control systems, sensor interfaces, data acquisition, and communication gateways where reliable 8-bit processing is essential.

Technical Specifications:


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Product attributes Property Value
Manufacturer Nuvoton Technology Corporation
Product Series W78
Packaging | Tube
Core Processor 8051
Core Size 8-Bit
Speed 24MHz
Connectivity EBI/EMI, UART/USART
Peripherals POR, WDT
Number of I/O 36
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 256 x 8
Voltage - Supply (Vcc/Vdd) 2.4V ~ 5.5V
Data Converters -
Oscillator Type Internal
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Supplier Device Package -
Package / Case 44-LCC (J-Lead)