AT28C256E-15JI

Product Overview

Category

AT28C256E-15JI 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 provides non-volatile storage, meaning that the data remains even when power is removed.

Characteristics

• Electrically erasable: The AT28C256E-15JI can be erased and reprogrammed electronically, making it convenient for updating or modifying stored data.
• High capacity: With a capacity of 256 kilobits (32 kilobytes), this EEPROM chip offers ample storage space for various applications.
• Fast access time: The -15JI variant has a fast access time of 150 nanoseconds, allowing for quick retrieval of data.

Package

The AT28C256E-15JI comes in a 28-pin JEDEC-standard PLCC (Plastic Leaded Chip Carrier) package. This package type ensures easy installation and reliable connections.

Essence

The essence of the AT28C256E-15JI lies in its ability to provide non-volatile storage with high capacity and fast access time, making it suitable for a wide range of electronic applications.

Packaging/Quantity

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

Specifications

• Memory 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 minimum
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28C256E-15JI 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. /CE - Chip Enable
18. /WE - Write Enable
19. I/O0 - Data Input/Output
20. I/O1 - Data Input/Output
21. I/O2 - Data Input/Output
22. I/O3 - Data Input/Output
23. I/O4 - Data Input/Output
24. I/O5 - Data Input/Output
25. I/O6 - Data Input/Output
26. I/O7 - Data Input/Output
27. VCC - Power Supply
28. GND - Ground

Functional Features

• Non-volatile storage: The AT28C256E-15JI retains data even when power is removed, ensuring data integrity.
• Electrically erasable and reprogrammable: This EEPROM chip allows for easy modification and updating of stored data through electronic means.
• High capacity: With 256 kilobits of storage, it can accommodate a significant amount of data.
• Fast access time: The -15JI variant offers a quick access time of 150 nanoseconds, enabling efficient data retrieval.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity.
• Electrically erasable and reprogrammable for easy data modification.
• High capacity allows for storing a large amount of data.
• Fast access time enables quick data retrieval.

Disadvantages

• Limited endurance: The AT28C256E-15JI has a maximum endurance of 100,000 write cycles, which may be a limitation in certain applications.
• Relatively higher power consumption compared to some other memory technologies.

Working Principles

The AT28C256E-15JI operates based on the principles of EEPROM technology. It utilizes a grid of floating-gate transistors that can be electrically programmed and erased. When data is written, charges are trapped in the floating gate, altering the transistor's behavior. These charges can be removed during the erasing process, allowing the transistor to return to its original state. This mechanism enables the storage and retrieval of data in a non-volatile manner.

Detailed Application Field Plans

The AT28C256E-15JI finds application in