AT28C64-25JC

Product Overview

Category

AT28C64-25JC 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

• Non-volatile: Retains data even when power is removed.
• Electrically erasable: Can be erased and reprogrammed electronically.
• High storage capacity: AT28C64-25JC has a capacity of 64 kilobits (8 kilobytes).
• Low power consumption: Operates at low voltage levels, making it energy-efficient.

Package

AT28C64-25JC is available in a 32-pin plastic J-lead chip carrier (PLCC) package.

Essence

The essence of AT28C64-25JC lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each containing a specific quantity of AT28C64-25JC chips. The exact quantity may vary depending on the supplier.

Specifications

• Operating voltage: 2.7V - 5.5V
• Access time: 250 nanoseconds
• Data retention: 10 years
• Endurance: 1 million write cycles

Detailed Pin Configuration

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. A9 - Address input
12. A10 - Address input
13. OE - Output enable
14. CE - Chip enable
15. WE - Write enable
16. I/O0 - Data input/output
17. I/O1 - Data input/output
18. I/O2 - Data input/output
19. I/O3 - Data input/output
20. VCC - Power supply
21. NC - No connection
22. NC - No connection
23. NC - No connection
24. NC - No connection
25. NC - No connection
26. NC - No connection
27. NC - No connection
28. NC - No connection
29. NC - No connection
30. NC - No connection
31. NC - No connection
32. NC - No connection

Functional Features

• Byte-wise programmable: Allows individual bytes to be programmed or erased.
• High-speed operation: Provides fast read and write access times.
• Automatic erase-before-write: Simplifies the programming process by automatically erasing the targeted memory location before writing new data.
• Software and hardware data protection: Offers various methods to protect stored data from accidental modification.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Ensures data retention even during power loss.
• Electrically erasable: Enables easy reprogramming without requiring physical removal of the chip.
• High storage capacity: Provides ample space for storing data in various applications.
• Low power consumption: Helps conserve energy in battery-powered devices.

Disadvantages

• Limited endurance: The EEPROM has a finite number of write cycles before it may become unreliable.
• Relatively slower access time compared to other types of memory.

Working Principles

AT28C64-25JC utilizes a combination of electronic circuits and floating gate transistors to store and retrieve digital information. When data is written, an electrical charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erasing process, allowing the transistor to return to its original state.

Detailed Application Field Plans

AT28C64-25JC finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Computer memory expansion: Provides additional non-volatile storage for computers. 3. Consumer electronics: Used in devices such as digital cameras, printers, and set-top boxes for data storage purposes. 4. Automotive electronics: Utilized in automotive control units for storing critical data and firmware.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: Similar EEPROM chip with a lower access time of 150 nanoseconds.
2. AT28C256-15PC: Higher capacity EEPROM chip with 256 kilobits (32 kilobytes) of storage.
3. AT29C010A-12PC: Flash memory chip with 1 megabit (128 kilobytes) of storage capacity.

These alternative models offer different specifications and capacities, providing options based