(1 customer review)

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SKU: 1165072

Package/Case: DIP-40

IC Name: Nuvoton W78E052DDG


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Brand: Nuvoton
Category: Microcontroller IC

W78E052DDG is a successive microcontroller unit that is fully compatible with the widely popular 8052 despite having an 8051 core. It is an 8-bit architecture-based microcontroller unit that has 8 kilobytes of Flash.

It has 256 bytes of RAM, 4 8-bit bi-directional I/O ports, specified as P0, P1, P2, P3, and 4-bit I/O port P4. Three 16-bit timer/counters, a hardware watchdog timer, and a serial port make this microcontroller easy to integrate with multiple applications.

The specialty of this microcontroller unit is the optional 12T or 6T mode. In 12T mode, it uses 12 clocks per machine cycle where the speed of the processor goes up to 40 MHz at 5V operating voltage. At the same time, if 6T Mode is selected, 6 clocks per machine cycle operation make the controller speed up to 20 MHz at 5V operating voltage.

It supports 2.4V to 5.5V operation, which makes it suitable for 3.3V to 5V logic level operations.


  1. 8052 compatible instruction sets
  2. MCS-51 compatible pin and instruction set.
  3. Product Type: 8-bit 8051 based Microcontrollers MCU
  4. EMI Reduction mode
  5. Full-duplex serial port – 1

Package Includes:

1 x Nuvoton W78E052DDG 8 Bit Microcontroller Unit IC

SKU: 1165072 Category:

8051-based CMOS

Data Bus width


Maximum Clock Frequency

40 MHz (12T mode, 12 clocks per machine cycle operation), 20 MHz (6T Mode, 6 clocks per machine cycle operation)

Program Memory size


Data RAM size


Operating supply

2.4V to 5.5 V

Minimum operating Temperature

– 40C

Maximum Operating Temperature

+ 85C

Program Memory Type


Interface Type


Number of 8-bit I/O ports


Number of Times/counters


Timer / Counter Resolution

16 bits

Shipping Weight 0.01 kg
Shipping Dimensions 5 × 5 × 1 cm

Based on 1 review

5.0 overall

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  1. amysoftec (verified owner)

    original item


Questions and answers of the customers

  1. 0 votes
    Q is it have bootloader ? answer now
    Asked by amysoftec on January 24, 2023 12:57 pm

    the W78E052-Nuvotonhas a bootloader that is pre... Read more

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Country Of Origin: China