AT28C256E-15PI

Product Overview

Category

AT28C256E-15PI 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 even when power is removed.
• Electrically erasable: Data can be erased and reprogrammed electronically.
• High storage capacity: The AT28C256E-15PI has a storage capacity of 256 kilobits (32 kilobytes).
• Low power consumption: This chip operates on low power, making it suitable for battery-powered devices.

Package

The AT28C256E-15PI comes in a 28-pin dual in-line package (DIP), which is a widely used packaging format for integrated circuits.

Essence

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

Packaging/Quantity

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

Specifications

• Supply voltage: 4.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Access time: 150 nanoseconds
• Endurance: 100,000 write cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28C256E-15PI has a total of 28 pins, each serving a specific purpose. 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. /WE - Write enable
19. /CE - Chip enable
20. VSS - Ground
21. D0 - Data input/output
22. D1 - Data input/output
23. D2 - Data input/output
24. D3 - Data input/output
25. D4 - Data input/output
26. D5 - Data input/output
27. D6 - Data input/output
28. D7 - Data input/output

Functional Features

• Byte-wise programmable: The AT28C256E-15PI allows individual bytes to be programmed or erased, providing flexibility in data manipulation.
• Fast access time: With an access time of 150 nanoseconds, this chip enables quick retrieval of stored data.
• High endurance: The AT28C256E-15PI can withstand up to 100,000 write cycles, ensuring long-term reliability.
• Low power consumption: This chip operates on low power, making it suitable for energy-efficient devices.

Advantages and Disadvantages

Advantages

• Non-volatile storage: The stored data remains intact even when power is lost.
• Electrically erasable: Data can be easily erased and reprogrammed without the need for external tools.
• High storage capacity: The AT28C256E-15PI offers a generous storage capacity of 256 kilobits.
• Versatile application: This chip finds applications in various electronic devices due to its compatibility and reliability.

Disadvantages

• Limited write endurance: Although the AT28C256E-15PI has a high endurance, it is still limited to 100,000 write cycles.
• Relatively slower access time: With an access time of 150 nanoseconds, this chip may not be suitable for applications requiring ultra-fast data retrieval.

Working Principles

The AT28C256E-15PI utilizes a combination of electrically controlled gates and floating gate transistors to store and retrieve data. When programming or erasing, electrical charges are applied to specific memory cells, altering their state and storing the desired information. During read operations, the stored data is accessed by activating the appropriate address lines and retrieving the corresponding data from the memory cells.

Detailed Application Field Plans

The AT28C256E-15PI can be used in various applications, including but not limited to:

1. Microcontrollers: This chip can serve as non-volatile memory for microcontrollers, storing program code and critical data. 2