AT28C256E-15JC

Product Overview

Category

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

Use

This product is primarily used for non-volatile data storage in various electronic devices such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile: Retains stored data even when power is removed.
• Electrically erasable: Allows for easy modification of stored data without requiring physical removal.
• Programmable: Can be written and rewritten multiple times.
• High storage capacity: The AT28C256E-15JC has a storage capacity of 256 kilobits (32 kilobytes).

Package

The AT28C256E-15JC is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of this product lies in its ability to provide reliable and flexible non-volatile data storage in electronic devices.

Packaging/Quantity

The AT28C256E-15JC is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply voltage: 5V
• Access time: 150 nanoseconds
• Operating temperature range: -40°C to +85°C
• Data retention: Minimum 10 years
• Endurance: Minimum 100,000 write cycles

Detailed Pin Configuration

The AT28C256E-15JC has a total of 32 pins. The pin configuration is as follows:

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. A8
10. A9
11. A10
12. A11
13. A12
14. A13
15. A14
16. A15
17. OE#
18. CE#
19. WE#
20. VCC
21. NC
22. I/O0
23. I/O1
24. I/O2
25. I/O3
26. I/O4
27. I/O5
28. I/O6
29. I/O7
30. GND
31. NC
32. NC

Functional Features

• Byte-wise programmable: Allows individual bytes to be programmed or erased.
• Hardware and software data protection: Provides mechanisms to prevent accidental modification of stored data.
• Fast access time: Enables quick retrieval of stored information.
• Low power consumption: Operates efficiently, minimizing power usage.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data remains intact even during power loss.
• Easy reprogramming: Allows for convenient modification of stored data.
• High storage capacity: Offers ample space for storing large amounts of data.
• Reliable performance: Ensures consistent operation over extended periods.

Disadvantages

• Limited endurance: The EEPROM has a finite number of write cycles before it may become unreliable.
• Relatively slower access time compared to other memory technologies.

Working Principles

The AT28C256E-15JC utilizes a combination of electronic circuits and charge storage mechanisms to store and retrieve data. It employs a grid of transistors that can be electrically programmed and erased by applying specific voltage levels to the control pins.

Detailed Application Field Plans

The AT28C256E-15JC finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Computer systems: Employed for BIOS (Basic Input/Output System) storage in personal computers. 3. Consumer electronics: Utilized for data storage in devices such as digital cameras, printers, and set-top boxes.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to the AT28C256E-15JC but available in a 28-pin DIP (Dual Inline Package) package.
2. AT28C256-20PC: Offers a higher access time of 200 nanoseconds but otherwise similar specifications.
3. AT28C256-25LM/883: A military-grade version with extended temperature range and enhanced reliability.

These alternative models provide similar functionality and can be considered as substitutes based on specific requirements.

In conclusion, the AT28C256E-15JC is an electrically erasable programmable read-only memory chip that offers reliable non-volatile data storage. With its high storage capacity and flexible programming capabilities, it finds applications in various electronic devices. While it has certain limitations, such as limited endurance and slower access times, it remains a popular choice for many embedded systems and consumer electronics.