AT28C64E-25TI

Product Overview

Category

AT28C64E-25TI belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for storing and retrieving data in electronic devices. It provides non-volatile storage, meaning that the data remains even when power is removed.

Characteristics

• Electrically erasable: The AT28C64E-25TI can be erased and reprogrammed electronically, making it convenient for updating or modifying stored data.
• High capacity: With a capacity of 64 kilobits (8 kilobytes), this EEPROM chip offers ample storage space for various applications.
• Low power consumption: The AT28C64E-25TI is designed to operate efficiently with minimal power requirements.
• Fast access time: This chip has a fast access time of 250 nanoseconds, allowing for quick retrieval of stored data.

Package

The AT28C64E-25TI comes in a small outline integrated circuit (SOIC) package. This package type ensures easy integration into electronic circuits and provides protection for the internal components.

Essence

The essence of the AT28C64E-25TI lies in its ability to store and retrieve data reliably, while offering flexibility through its electrically erasable and reprogrammable nature.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a specific quantity of chips per package. The exact packaging and quantity may vary depending on the supplier or customer requirements.

Specifications

• Capacity: 64 kilobits (8 kilobytes)
• Access Time: 250 nanoseconds
• Supply Voltage: 2.7V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years

Detailed Pin Configuration

The AT28C64E-25TI 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. VSS - Ground
10. A8 - Address Input
11. CE - Chip Enable
12. OE - Output Enable
13. WE - Write Enable
14. I/O0 - Data Input/Output
15. I/O1 - Data Input/Output
16. I/O2 - Data Input/Output
17. I/O3 - Data Input/Output
18. I/O4 - Data Input/Output
19. I/O5 - Data Input/Output
20. I/O6 - Data Input/Output
21. I/O7 - Data Input/Output
22. NC - No Connection
23. NC - No Connection
24. VCC - Supply Voltage
25. NC - No Connection
26. NC - No Connection
27. NC - No Connection
28. NC - No Connection

Functional Features

The AT28C64E-25TI offers the following functional features:

• Byte-wise programmable: It allows individual bytes to be programmed or erased, providing flexibility in data manipulation.
• Automatic erase-before-write: This feature ensures that the memory cells are erased before new data is written, preventing data corruption.
• Hardware and software protection: The chip provides mechanisms to protect stored data from accidental modification or unauthorized access.
• High reliability: With built-in error detection and correction techniques, the AT28C64E-25TI ensures data integrity and reliability.

Advantages and Disadvantages

Advantages

• Electrically erasable and reprogrammable, allowing for easy updates and modifications.
• High storage capacity for various applications.
• Low power consumption, making it suitable for battery-powered devices.
• Fast access time for quick data retrieval.
• Reliable data storage with error detection and correction mechanisms.

Disadvantages

• Limited write endurance: EEPROM chips have a finite number of erase/write cycles before they may become unreliable.
• Relatively higher cost compared to other non-volatile memory options.

Working Principles

The AT28C64E-25TI utilizes a combination of electronic circuits and memory cells to store and retrieve data. When data needs to be stored, the chip applies electrical signals to program specific memory cells. To retrieve the stored data, the chip reads the programmed memory cells and outputs the corresponding information.

Detailed Application Field Plans

The AT28C64E-25TI finds application in various fields, including but not limited to:

1. Embedded Systems: Used for storing firmware, configuration data, or calibration values in microcontrollers or system