AT28C64B-15JU

Product Overview

Category

AT28C64B-15JU belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This chip is commonly 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: Data can be erased and reprogrammed electronically.
• High storage capacity: The AT28C64B-15JU has a storage capacity of 64 kilobits (8 kilobytes).
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.

Package

The AT28C64B-15JU is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of the AT28C64B-15JU is its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

These chips are typically sold in reels or tubes, with each reel or tube containing a specific quantity of AT28C64B-15JU chips. The exact quantity may vary depending on the supplier.

Specifications

• Operating voltage: 2.7V to 5.5V
• Access time: 150 nanoseconds
• Organization: 8,192 words x 8 bits
• Endurance: 10,000 write/erase cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28C64B-15JU has a total of 32 pins. Here is the detailed pin configuration:

1. A12 - Address Input
2. A7 - Address Input
3. A6 - Address Input
4. A5 - Address Input
5. A4 - Address Input
6. A3 - Address Input
7. A2 - Address Input
8. A1 - Address Input
9. A0 - Address Input
10. VCC - Power Supply
11. OE - Output Enable
12. CE - Chip 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. GND - Ground
24. A8 - Address Input
25. A9 - Address Input
26. A11 - Address Input
27. A10 - Address Input
28. BYTE - Byte/Word Organization
29. WP - Write Protect
30. VCC - Power Supply
31. NC - No Connection
32. NC - No Connection

Functional Features

• High-speed operation: The AT28C64B-15JU offers fast access times, allowing for efficient data retrieval and storage.
• Easy integration: It can be easily integrated into existing electronic systems due to its standard pin configuration and compatibility with various microcontrollers.
• Reliable data retention: The chip ensures long-term data retention, making it suitable for critical applications where data integrity is crucial.
• Low power consumption: The AT28C64B-15JU operates at low power levels, minimizing energy consumption in battery-powered devices.

Advantages and Disadvantages

Advantages

• Non-volatile memory: The stored data remains intact even when power is lost.
• Electrically erasable: Data can be erased and reprogrammed electronically, eliminating the need for physical removal or replacement of the chip.
• High storage capacity: The AT28C64B-15JU provides ample storage space for various applications.
• Compatibility: It is compatible with a wide range of microcontrollers and electronic systems.

Disadvantages

• Limited endurance: The chip has a limited number of write/erase cycles before it may start to degrade.
• Relatively slower access time compared to some other memory technologies.
• Higher cost compared to certain alternative memory solutions.

Working Principles

The AT28C64B-15JU utilizes a combination of electrically controlled gates and floating gate transistors to store and retrieve data. When data needs to be written, an electrical charge is applied to specific cells within the chip, altering the state of the floating gate transistor. This change in state represents the stored data. To read the data, the chip applies voltage to the appropriate cells and measures the resulting electrical current. The presence or absence of current indicates the stored data.

Detailed Application