AT28C256E-15PC

Product Overview

Category

AT28C256E-15PC belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used in electronic devices for storing and retrieving data. It allows for non-volatile storage, meaning that the data remains even when power is removed.

Characteristics

• Electrically erasable: The AT28C256E-15PC can be erased and reprogrammed electronically, making it convenient for updating or modifying stored data.
• High capacity: With a storage capacity of 256 kilobits, this EEPROM chip can store a significant amount of data.
• Low power consumption: The AT28C256E-15PC operates on low power, making it suitable for battery-powered devices.
• Fast access time: This chip has a fast access time of 150 nanoseconds, enabling quick retrieval of stored data.

Package

The AT28C256E-15PC comes in a 28-pin plastic dual in-line package (PDIP), which provides physical protection and facilitates easy integration into electronic circuits.

Essence

The essence of the AT28C256E-15PC lies in its ability to provide reliable and non-volatile data storage in various electronic applications.

Packaging/Quantity

This product is typically packaged in tubes or trays, with each containing a specific quantity of AT28C256E-15PC chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 150 nanoseconds
• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years

Detailed Pin Configuration

The AT28C256E-15PC has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. /OE - Output Enable
17. /WE - Write Enable
18. VCC - Power Supply
19. DQ0 - Data Input/Output
20. DQ1 - Data Input/Output
21. DQ2 - Data Input/Output
22. DQ3 - Data Input/Output
23. DQ4 - Data Input/Output
24. DQ5 - Data Input/Output
25. DQ6 - Data Input/Output
26. DQ7 - Data Input/Output
27. /CE - Chip Enable
28. GND - Ground

Functional Features

The AT28C256E-15PC offers the following functional features:

• Byte-wise Read and Write Operations: Allows for efficient reading and writing of data in individual bytes.
• Electronic Erase and Reprogramming: Enables easy modification of stored data without the need for physical erasure or replacement.
• Non-volatile Storage: Retains data even when power is removed, ensuring data integrity and reliability.
• Low Power Consumption: Operates on low power, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• High storage capacity for a wide range of data storage needs.
• Fast access time allows for quick retrieval of stored data.
• Electrically erasable and reprogrammable, providing flexibility for data updates.
• Low power consumption ensures efficient operation in various electronic devices.

Disadvantages

• Limited endurance: EEPROM chips have a limited number of erase/write cycles before they may become unreliable.
• Relatively higher cost compared to other types of memory chips.
• Larger physical size compared to some newer memory technologies.

Working Principles

The AT28C256E-15PC operates based on the principles of electrically erasable programmable read-only memory. It utilizes a grid of transistors and capacitors to store and retrieve data. When data is written, an electrical charge is applied to specific cells within the chip, altering their state. To read the data, the chip selectively activates the appropriate cells and measures the resulting electrical signals.

Detailed Application Field Plans

The AT28C256E-15PC finds applications in various electronic devices and systems, including but not limited to:

1.