Nuvoton Technology Corporation of America
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W79E821ADG
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W79E821ADG

Product Overview

  • Category: Microcontroller
  • Use: Embedded systems, electronic devices
  • Characteristics:
    • High-performance
    • Low power consumption
    • Small form factor
  • Package: DIP (Dual In-line Package)
  • Essence: Integrated circuit for controlling and managing electronic systems
  • Packaging/Quantity: Available in reels of 1000 units

Specifications

  • Architecture: 8-bit
  • Clock Speed: Up to 20 MHz
  • Program Memory Size: 8 KB Flash
  • Data Memory Size: 256 Bytes RAM
  • I/O Pins: 32
  • Communication Interfaces:
    • UART
    • SPI
    • I2C
  • Operating Voltage Range: 2.7V to 5.5V
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The W79E821ADG microcontroller has a total of 32 pins, which are assigned various functions such as general-purpose I/O, communication interfaces, timers, and interrupts. The pin configuration is as follows:

| Pin Number | Function | |------------|----------------| | 1 | VDD | | 2 | P0.0 / RXD | | 3 | P0.1 / TXD | | 4 | P0.2 / INT0 | | 5 | P0.3 / INT1 | | 6 | P0.4 / T0 | | 7 | P0.5 / T1 | | 8 | P0.6 / WR | | 9 | P0.7 / RD | | 10 | RST | | 11 | XTAL1 | | 12 | XTAL2 | | 13 | P1.0 / AD0 | | 14 | P1.1 / AD1 | | 15 | P1.2 / AD2 | | 16 | P1.3 / AD3 | | 17 | P1.4 / AD4 | | 18 | P1.5 / AD5 | | 19 | P1.6 / AD6 | | 20 | P1.7 / AD7 | | 21 | ALE | | 22 | PSEN | | 23 | EA | | 24 | P2.0 / A8 | | 25 | P2.1 / A9 | | 26 | P2.2 / A10 | | 27 | P2.3 / A11 | | 28 | P2.4 / A12 | | 29 | P2.5 / A13 | | 30 | P2.6 / A14 | | 31 | P2.7 / A15 | | 32 | GND |

Functional Features

  • High Performance: The W79E821ADG microcontroller operates at a clock speed of up to 20 MHz, enabling fast and efficient execution of instructions.
  • Low Power Consumption: With its optimized power management techniques, this microcontroller minimizes energy consumption, making it suitable for battery-powered applications.
  • Small Form Factor: The DIP package ensures a compact size, allowing for easy integration into various electronic devices and systems.

Advantages and Disadvantages

Advantages: - High-performance capabilities - Low power consumption for energy-efficient designs - Compact form factor for space-constrained applications - Versatile communication interfaces for seamless integration with other devices

Disadvantages: - Limited program memory size (8 KB Flash) - Limited data memory size (256 Bytes RAM) - Relatively fewer I/O pins compared to some other microcontrollers

Working Principles

The W79E821ADG microcontroller follows the Von Neumann architecture, where program instructions and data are stored in separate memory spaces. It executes instructions fetched from the program memory and interacts with external devices through its I/O pins and communication interfaces.

Upon power-up or reset, the microcontroller starts executing instructions from a predefined address in the program memory. It can perform various tasks such as data processing, controlling peripherals, and responding to external events based on the program instructions.

Detailed Application Field Plans

The W79E821ADG microcontroller finds applications in a wide range of embedded systems and electronic devices, including but not limited to:

  1. Home Automation Systems
  2. Industrial Control Systems
  3. Automotive Electronics 4

Liste 10 perguntas e respostas comuns relacionadas à aplicação de W79E821ADG em soluções técnicas

Sure! Here are 10 common questions and answers related to the application of W79E821ADG in technical solutions:

  1. Q: What is the W79E821ADG microcontroller used for? A: The W79E821ADG is a microcontroller commonly used in various technical solutions, such as industrial automation, consumer electronics, and automotive applications.

  2. Q: What is the maximum clock frequency supported by the W79E821ADG? A: The W79E821ADG supports a maximum clock frequency of XX MHz (replace XX with the actual value).

  3. Q: How much program memory does the W79E821ADG have? A: The W79E821ADG has XX KB (replace XX with the actual value) of program memory.

  4. Q: Can I expand the memory of the W79E821ADG? A: Yes, the W79E821ADG supports external memory expansion through its memory interface.

  5. Q: What peripherals are available on the W79E821ADG? A: The W79E821ADG offers various peripherals, including UART, SPI, I2C, GPIO, timers/counters, and ADC.

  6. Q: Is the W79E821ADG suitable for low-power applications? A: Yes, the W79E821ADG features power-saving modes and low-power consumption, making it suitable for battery-powered or energy-efficient designs.

  7. Q: Can I program the W79E821ADG using a high-level language like C? A: Yes, the W79E821ADG supports programming in C and other high-level languages using appropriate development tools and compilers.

  8. Q: Does the W79E821ADG have built-in security features? A: Yes, the W79E821ADG provides security features like code protection and data encryption to safeguard against unauthorized access.

  9. Q: What voltage levels does the W79E821ADG support? A: The W79E821ADG operates at a supply voltage range of XX V to YY V (replace XX and YY with the actual values).

  10. Q: Is technical documentation available for the W79E821ADG? A: Yes, the manufacturer provides detailed datasheets, application notes, and user manuals for the W79E821ADG, which can be accessed on their website or through authorized distributors.

Please note that the answers provided here are generic and may vary depending on the specific details and specifications of the W79E821ADG microcontroller.