AT28C256E-15TC

Product Overview

Category

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

Use

This product is primarily used for non-volatile storage of digital data 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-15TC has a capacity of 256 kilobits (32 kilobytes).
• Fast access time: The chip operates at a maximum access time of 150 nanoseconds.
• Low power consumption: It requires minimal power during operation.

Package

The AT28C256E-15TC is available in a 28-pin Thin Small Outline Package (TSOP), which ensures compactness and ease of integration into electronic circuits.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for digital data, allowing for flexible and efficient data management in electronic systems.

Packaging/Quantity

The AT28C256E-15TC is typically packaged in reels or tubes, with each package containing a specific quantity of 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: 2.7V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years

Pin Configuration

The AT28C256E-15TC features a 28-pin configuration with the following pin assignments:

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. VSS (Ground)
17. NC (No Connection)
18. CE (Chip Enable)
19. OE (Output Enable)
20. WE (Write Enable)
21. I/O0
22. I/O1
23. I/O2
24. I/O3
25. I/O4
26. I/O5
27. I/O6
28. I/O7

Functional Features

• Byte-wise programmable: The AT28C256E-15TC allows individual bytes to be programmed or erased, providing flexibility in data manipulation.
• High-speed operation: With a maximum access time of 150 nanoseconds, this chip ensures fast and efficient data retrieval.
• Low power consumption: The product is designed to minimize power consumption, making it suitable for battery-powered devices.
• Extended data retention: The stored data can be retained for up to 10 years, ensuring long-term reliability.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Data remains intact even without power supply.
• Flexible programming: Individual bytes can be easily programmed or erased.
• Fast access time: Enables quick data retrieval.
• Low power consumption: Suitable for energy-efficient applications.
• Compact package: Thin Small Outline Package (TSOP) ensures easy integration.

Disadvantages

• Limited storage capacity: 256 kilobits may not be sufficient for certain high-capacity applications.
• Limited endurance: EEPROMs have a limited number of erase/write cycles before degradation.

Working Principles

The AT28C256E-15TC utilizes a floating-gate transistor structure to store and retrieve digital data. The memory cells consist of transistors that can be electrically programmed or erased by applying specific voltage levels to the control pins. When programming, electrons are trapped in the floating gate, altering the transistor's behavior and storing the desired data. Erasing is achieved by removing the trapped charge from the floating gate.

Detailed Application Field Plans

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

1. Microcontrollers: Used for firmware storage in microcontroller-based systems.
2. Computers: Employed for BIOS (Basic Input/Output System) storage in computer motherboards.
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.
5. Industrial Control Systems: Used for program storage in industrial automation and control systems.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to AT28C256E-