AT28C64E-12PI

Product Overview

Category

AT28C64E-12PI 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: The memory can be erased and reprogrammed electronically.
• High storage capacity: The AT28C64E-12PI has a capacity of 64 kilobits (8 kilobytes).
• Low power consumption: It operates at low voltage levels, making it energy-efficient.
• Fast access time: The chip has a maximum access time of 120 nanoseconds.

Package

The AT28C64E-12PI comes in a 28-pin plastic dual in-line package (PDIP).

Essence

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

Packaging/Quantity

The AT28C64E-12PI 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

• Memory Capacity: 64 kilobits (8 kilobytes)
• Operating Voltage: 5V
• Access Time: 120 nanoseconds
• Erase/Write Cycles: 10,000 minimum
• Data Retention: 10 years minimum
• Package Type: 28-pin PDIP

Detailed Pin Configuration

The AT28C64E-12PI has a total of 28 pins, each serving a specific function. Here is the detailed pin configuration:

1. A14 - Address Input
2. A12 - Address Input
3. A7 - Address Input
4. A6 - Address Input
5. A5 - Address Input
6. A4 - Address Input
7. A3 - Address Input
8. A2 - Address Input
9. A1 - Address Input
10. A0 - Address Input
11. /OE - Output Enable
12. /WE - Write Enable
13. VCC - Power Supply
14. A8 - Address Input
15. A9 - Address Input
16. A11 - Address Input
17. A10 - Address Input
18. DQ0 - Data Input/Output
19. DQ1 - Data Input/Output
20. DQ2 - Data Input/Output
21. DQ3 - Data Input/Output
22. DQ4 - Data Input/Output
23. DQ5 - Data Input/Output
24. DQ6 - Data Input/Output
25. DQ7 - Data Input/Output
26. GND - Ground
27. NC - No Connection
28. /CE - Chip Enable

Functional Features

The AT28C64E-12PI offers the following functional features:

• Byte-wise Read and Write Operations: The chip allows individual bytes to be read from or written to, providing flexibility in data manipulation.
• Electronic Erase and Reprogramming: The memory can be erased and reprogrammed electronically, eliminating the need for physical erasure methods.
• High-Speed Access: With a maximum access time of 120 nanoseconds, the AT28C64E-12PI enables fast data retrieval and storage.
• Low Power Consumption: The chip operates at low voltage levels, minimizing power consumption and extending battery life in portable devices.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Electrically erasable and reprogrammable, allowing for easy updates and modifications.
• High storage capacity suitable for various applications.
• Fast access time enables quick data retrieval.
• Low power consumption makes it energy-efficient.

Disadvantages

• Limited erase/write cycles (10,000 minimum) may restrict frequent reprogramming.
• Relatively higher cost compared to other memory technologies.
• Requires proper handling and protection against electrostatic discharge (ESD) to prevent damage.

Working Principles

The AT28C64E-12PI utilizes a combination of electronic circuits and semiconductor technology to store and retrieve digital information. It employs a floating-gate transistor structure that allows the memory cells to retain their stored charge even when power is removed. The chip uses electrical signals to enable reading, writing, and erasing operations, providing a reliable and efficient means of data storage.

Detailed Application Field Plans

The AT28C64E-12PI finds application in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration settings, and calibration data.
2. Computers: Employed in BIOS