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MCU 8-bit W77 8051 CISC 32KB EPROM 5V

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Avaq Semiconductor offers the highly versatile and reliable W77E058A40PL driver, produced by Nuvoton. With its multifunctional and high-performance capabilities, this component is an excellent choice for a wide range of electronic projects.

To ensure that you have all the necessary information to make the most of this component, Avaq provides a free datasheet PDF, as well as circuit diagrams, pin layouts, pin details, pin voltage ratings, and equivalent components for the  W77E058A40PL.

Avaq also offers free samples. Simply fill out and submit the sample request form to receive your free samples for testing. If you have any questions, please feel free to contact us at any time.


Pbfree Code No Rohs Code No
Part Life Cycle Code Active Ihs Manufacturer NUVOTON TECHNOLOGY CORP
Part Package Code LCC Package Description LCC-44
Pin Count 44 Reach Compliance Code compliant
ECCN Code 3A991.A.2 HTS Code 8542.31.00.01
Samacsys Manufacturer Nuvoton Has ADC NO
Address Bus Width 16 Bit Size 8
CPU Family 8051 Clock Frequency-Max 40 MHz
DAC Channels NO DMA Channels NO
External Data Bus Width 8 JESD-30 Code S-PQCC-J44
JESD-609 Code e0 Length 16.59 mm
Number of I/O Lines 36 Number of Terminals 44
On Chip Program ROM Width 8 Operating Temperature-Max 70 °C
Operating Temperature-Min PWM Channels NO
Package Body Material PLASTIC/EPOXY Package Code QCCJ
Package Equivalence Code LDCC44,.7SQ Package Shape SQUARE
Package Style CHIP CARRIER Power Supplies 5 V
Qualification Status Not Qualified RAM (bytes) 1024
ROM (words) 32678 ROM Programmability FLASH
Seated Height-Max 4.699 mm Speed 40 MHz
Supply Current-Max 50 mA Supply Voltage-Max 5.5 V
Supply Voltage-Min 4.5 V Supply Voltage-Nom 5 V
Surface Mount YES Technology CMOS
Temperature Grade COMMERCIAL Terminal Finish TIN LEAD
Terminal Form J BEND Terminal Pitch 1.27 mm
Terminal Position QUAD Width 16.59 mm
uPs/uCs/Peripheral ICs Type MICROCONTROLLER


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


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Buying Guide

  • What is the lifespan of W77E058A40PL?

    The lifespan of W77E058A40PL depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of W77E058A40PL?

    You can find it with PDF Datasheet for W77E058A40PL on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of W77E058A40PL?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

  • Where to view my order of W77E058A40PL or my history order record?

    You could view all of your orders by logging in or registering AVAQ account. Log in or Register an account now.