The At89c55wd Datasheet is your comprehensive guide to understanding and utilizing the Atmel (now Microchip Technology) At89c55wd microcontroller. This document provides detailed specifications, pin configurations, electrical characteristics, and programming information necessary for designing and implementing embedded systems using this popular 8-bit microcontroller. Without the At89c55wd Datasheet, properly applying this chip is nearly impossible.
Dissecting the At89c55wd Datasheet A Treasure Trove of Information
The At89c55wd Datasheet serves as the central repository of information for anyone working with this microcontroller. It’s much more than just a dry list of numbers; it’s a detailed roadmap outlining the chip’s capabilities, limitations, and operational parameters. It encompasses everything from pinout diagrams, which show the function of each pin on the chip, to detailed timing diagrams illustrating the microcontroller’s behavior under various operating conditions. This information is vital for successfully integrating the At89c55wd into a circuit and ensuring it operates as intended.
The datasheet also covers electrical characteristics, specifying voltage and current requirements, as well as operating temperature ranges. This is important for ensuring the microcontroller operates reliably within the defined safe operating area. Understanding these parameters prevents damage to the chip and ensures stable performance. The datasheet presents these key parameters in tables, often alongside graphs depicting performance variations under different conditions. Understanding these values are a cornerstone of good microcontroller design. For example, the datasheet might include a table such as:
| Parameter | Typical Value | Unit |
|---|---|---|
| Operating Voltage | 5 | V |
| Operating Temperature | -40 to +85 | °C |
Furthermore, the At89c55wd Datasheet includes programming information. It details the microcontroller’s instruction set, memory organization, and interrupt handling capabilities. This is crucial for developing the firmware that controls the microcontroller’s behavior. It describes the special function registers (SFRs) that control the chip’s various peripherals, like timers, serial communication interfaces, and input/output ports. Mastering the programming details within the datasheet is essential for unleashing the full potential of the At89c55wd. Here’s a glimpse of what you might find within the datasheet regarding memory organization:
- Internal RAM: 256 bytes
- Flash Memory: 20KB
- Accessing Internal RAM
- Reading Flash Memory
Ready to dive deeper and truly understand the capabilities of the At89c55wd? Refer to the full datasheet to unlock all the information and insights available. This powerful document is the key to your success with this microcontroller.