AT28C256E-15TI

Product Overview

Category

AT28C256E-15TI 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: The stored data remains intact even when power is removed.
• Electrically erasable: The memory can be erased and reprogrammed electronically.
• High storage capacity: The AT28C256E-15TI has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: It operates at a maximum access time of 150 nanoseconds.

Package

The AT28C256E-15TI is available in a standard 28-pin dual in-line package (DIP).

Essence

The essence of this product lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

The AT28C256E-15TI is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

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-15TI 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. A15 - Address Input
17. OE - Output Enable
18. CE - Chip Enable
19. WE - Write Enable
20. I/O0 - Data Input/Output
21. I/O1 - Data Input/Output
22. I/O2 - Data Input/Output
23. I/O3 - Data Input/Output
24. I/O4 - Data Input/Output
25. I/O5 - Data Input/Output
26. I/O6 - Data Input/Output
27. I/O7 - Data Input/Output
28. Vcc - Supply Voltage

Functional Features

• High-speed operation: The AT28C256E-15TI offers fast read and write operations, allowing for efficient data access.
• Low power consumption: It is designed to minimize power consumption, making it suitable for battery-powered devices.
• Easy integration: The chip can be easily integrated into existing electronic systems due to its standard pin configuration and compatibility with common interfaces.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Electrically erasable and reprogrammable, providing flexibility in data storage.
• High storage capacity allows for storing a significant amount of data.
• Fast access time enables quick retrieval of information.

Disadvantages

• Limited endurance: EEPROMs have a finite number of erase/write cycles before they may become unreliable.
• Relatively higher cost compared to other types of memory.

Working Principles

The AT28C256E-15TI utilizes a floating-gate transistor structure to store data. When programming, an electric charge is applied to the floating gate, altering its electrical characteristics and storing the desired information. Erasing is achieved by removing the charge from the floating gate using an electrical signal. The stored data can be read by applying appropriate voltage levels to the address and control pins.

Detailed Application Field Plans

The AT28C256E-15TI finds applications in various fields, including:

1. Embedded Systems: Used for firmware storage in microcontrollers and embedded devices.
2. Computers: Employed for BIOS (Basic Input/Output System) storage in computer systems.
3. Consumer Electronics: Utilized for non-volatile data storage in devices such as smart TVs, set-top boxes, and gaming consoles.
4. Automotive: Integrated into automotive electronics for storing critical data like calibration parameters and configuration settings.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: 64 kilobit EEPROM with similar specifications but lower storage capacity. 2