AT28C64-12JC

Product Overview

Category

AT28C64-12JC 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: The data stored in AT28C64-12JC remains even when power is removed.
• Electrically erasable: The memory can be erased and reprogrammed electronically.
• High storage capacity: AT28C64-12JC has a capacity of 64 kilobits (8 kilobytes).
• Low power consumption: This chip operates on low power, making it suitable for battery-powered devices.

Package

AT28C64-12JC is available in a 32-pin plastic J-lead chip carrier (PLCC) package.

Essence

The essence of AT28C64-12JC lies in its ability to provide reliable and non-volatile storage for electronic devices, ensuring data integrity even during power loss or system shutdown.

Packaging/Quantity

AT28C64-12JC is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply voltage: 4.5V to 5.5V
• Access time: 120 ns
• Operating temperature range: -40°C to +85°C
• Data retention: 10 years
• Endurance: 1,000,000 write cycles

Detailed Pin Configuration

The AT28C64-12JC chip has a total of 32 pins, each serving a specific purpose. Here is a 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. NC: No connection
15. DQ0: Data input/output
16. DQ1: Data input/output
17. DQ2: Data input/output
18. DQ3: Data input/output
19. DQ4: Data input/output
20. DQ5: Data input/output
21. DQ6: Data input/output
22. DQ7: Data input/output
23. /CE: Chip enable
24. /PGM: Program mode
25. /VPP: Programming voltage
26. GND: Ground
27. A8: Address input
28. A9: Address input
29. A11: Address input
30. A10: Address input
31. A13: Address input
32. /BYTE: Byte control

Functional Features

• High-speed operation: AT28C64-12JC offers fast access times, allowing for efficient data retrieval and storage.
• Easy integration: The chip can be easily integrated into existing electronic systems due to its standard pin configuration and compatibility with various microcontrollers.
• Reliable data retention: The EEPROM technology used in AT28C64-12JC ensures long-term data retention, making it suitable for critical applications.
• Low power consumption: This chip consumes minimal power during both read and write operations, contributing to energy efficiency in electronic devices.

Advantages and Disadvantages

Advantages

• Non-volatile storage: AT28C64-12JC retains data even without power, ensuring data integrity.
• Electrically erasable: The chip can be easily erased and reprogrammed electronically, allowing for flexibility in data storage.
• High storage capacity: With a capacity of 64 kilobits, this chip provides ample space for storing critical data.
• Low power consumption: AT28C64-12JC operates on low power, making it suitable for battery-powered devices.

Disadvantages

• Limited endurance: The chip has a limited number of write cycles (1,000,000), which may restrict its use in applications requiring frequent data updates.
• Relatively slower access time: Compared to some newer memory technologies, the access time of 120 ns may be considered slower for certain high-performance applications.

Working Principles

AT28C64-12JC utilizes EEPROM technology, which allows for non-volatile storage of data. The chip consists of an array of memory cells that can be individually programmed or erased using electrical signals. When data is written, the corresponding memory cells are programmed by applying appropriate voltage levels. During read operations, the stored data is retrieved by sensing the voltage levels in the memory cells.