AT28C64E-12JU

Product Overview

Category

AT28C64E-12JU belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for non-volatile storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Electrically erasable: The AT28C64E-12JU can be erased and reprogrammed electronically, making it convenient for updating data.
• Non-volatile: The stored data remains even when power is removed.
• High capacity: This chip has a capacity of 64 kilobits, allowing for the storage of a significant amount of information.
• Low power consumption: The AT28C64E-12JU operates at low power levels, making it suitable for battery-powered devices.

Package

The AT28C64E-12JU is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package. This package provides protection and easy integration into circuit boards.

Essence

The essence of the AT28C64E-12JU lies in its ability to store and retrieve data reliably, while offering flexibility for updates and low power consumption.

Packaging/Quantity

This product 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 supplier.

Specifications

• Memory Capacity: 64 kilobits (8 kilobytes)
• Operating Voltage: 2.7V - 5.5V
• Access Time: 120 nanoseconds
• Erase/Write Cycles: 10,000 minimum
• Data Retention: 10 years minimum
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AT28C64E-12JU has a total of 32 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. VCC - Power Supply
10. OE - Output Enable
11. CE - Chip Enable
12. WE - Write Enable
13. I/O0 - Data Input/Output
14. I/O1 - Data Input/Output
15. I/O2 - Data Input/Output
16. I/O3 - Data Input/Output
17. I/O4 - Data Input/Output
18. I/O5 - Data Input/Output
19. I/O6 - Data Input/Output
20. I/O7 - Data Input/Output
21. NC - No Connection
22. NC - No Connection
23. NC - No Connection
24. GND - Ground
25. A8 - Address Input
26. A9 - Address Input
27. A10 - Address Input
28. A11 - Address Input
29. A12 - Address Input
30. A13 - Address Input
31. A14 - Address Input
32. A15 - Address Input

Functional Features

The AT28C64E-12JU offers the following functional features:

• Byte-wise Read and Write: Allows for efficient reading and writing of data in individual bytes.
• Electronic Erase: Enables easy erasure of data without the need for physical removal or replacement of the chip.
• High-Speed Operation: The chip operates at a fast access time of 120 nanoseconds, ensuring quick data retrieval.
• Low Power Consumption: The AT28C64E-12JU is designed to minimize power usage, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Flexible and convenient electronic erasure and reprogramming.
• High storage capacity for a wide range of applications.
• Reliable data retention even in the absence of power.
• Low power consumption, ideal for portable devices.

Disadvantages

• Limited erase/write cycles (10,000 minimum) compared to other memory technologies.
• Relatively slower access time compared to some modern memory chips.

Working Principles

The AT28C64E-12JU operates based on the principles of EEPROM technology. It utilizes a grid of floating-gate transistors to store and retrieve data. When data needs to be written or erased, an electric charge is applied to specific cells within the chip, altering their electrical state. This allows for the storage and modification of data electronically.

Detailed Application Field Plans

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

1. Microcontrollers