The 2764 Datasheet is a vital document for anyone delving into the world of classic computing, embedded systems, or vintage electronics. It holds all the essential information about the 2764 EPROM (Erasable Programmable Read-Only Memory) chip, a fundamental building block of many devices from the 1980s and early 90s. Understanding the information within the 2764 Datasheet is crucial for successfully interfacing with, programming, or troubleshooting systems that utilize this iconic memory chip.
Deciphering the 2764 EPROM: A Technical Deep Dive
The 2764 Datasheet serves as the definitive guide to understanding the 2764 EPROM. It details the chip’s electrical characteristics, timing requirements, pinout configuration, and programming procedures. Essentially, it’s the “owner’s manual” for this specific integrated circuit. EPROMs like the 2764 allowed developers to store firmware, program code, and other persistent data in a non-volatile manner. This meant that the data would remain even when the power was turned off. Their importance lies in enabling devices to “remember” their instructions and settings, making them indispensable in early computing and embedded systems.
The datasheet will outline several key specifications that determine how you interface with the 2764:
- Memory Size: Typically 8KB (8192 bytes).
- Voltage Requirements: The voltages required for reading, writing (programming), and erasing.
- Pinout Diagram: A visual representation of each pin and its function.
- Timing Diagrams: Showing the timing relationships between various signals (address, data, control signals) during read and write operations.
Without the datasheet, understanding these crucial operating parameters becomes almost impossible.
The 2764 EPROM itself comes in a Dual In-line Package (DIP) form, making it relatively easy to handle and integrate into circuit boards. Programming involves applying specific voltages to certain pins for a defined duration, effectively “burning” the data into the memory cells. The 2764 can then be erased by exposing the quartz window on top of the chip to ultraviolet (UV) light for a sufficient amount of time, which resets all the memory cells to their initial state, hence the name “Erasable”. The following table provides a simplified overview of the key control signals:
| Signal | Description |
|---|---|
| CE (Chip Enable) | Activates the chip for reading or writing. |
| OE (Output Enable) | Enables the data outputs during a read operation. |
| PGM (Program) | Used to program (write data) into the EPROM. |
To properly utilize the 2764 EPROM and grasp all its specifications, it is highly recommended you consult the source mentioned after this paragraph.