AT28C64B-20JA

Product Overview

Category

AT28C64B-20JA belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used in electronic devices for storing and retrieving data. It provides non-volatile storage, meaning that the data remains even when power is removed.

Characteristics

• Electrically erasable: The AT28C64B-20JA can be erased and reprogrammed electronically, making it convenient for updating or modifying stored data.
• High capacity: With a capacity of 64 kilobits (8 kilobytes), this EEPROM chip offers ample storage space for various applications.
• Low power consumption: The AT28C64B-20JA operates efficiently with low power requirements, making it suitable for battery-powered devices.
• Fast access time: This chip has a fast access time of 200 nanoseconds, enabling quick retrieval of stored data.

Package

The AT28C64B-20JA is available in a 32-pin plastic J-leaded chip carrier package.

Essence

The essence of the AT28C64B-20JA lies in its ability to provide reliable and flexible data storage solutions for electronic devices.

Packaging/Quantity

This product is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Memory capacity: 64 kilobits (8 kilobytes)
• Operating voltage: 2.7V to 5.5V
• Access time: 200 ns
• Erase/write cycles: 10,000 minimum
• Data retention: 10 years minimum
• Package type: 32-pin plastic J-leaded chip carrier

Detailed Pin Configuration

The AT28C64B-20JA features a 32-pin configuration with the following pin assignments:

1. A14
2. A12
3. A7
4. A6
5. A5
6. A4
7. A3
8. A2
9. A1
10. A0
11. /OE (Output Enable)
12. /WE (Write Enable)
13. /CE (Chip Enable)
14. NC (No Connection)
15. DQ0 (Data Input/Output 0)
16. DQ1 (Data Input/Output 1)
17. DQ2 (Data Input/Output 2)
18. DQ3 (Data Input/Output 3)
19. DQ4 (Data Input/Output 4)
20. DQ5 (Data Input/Output 5)
21. DQ6 (Data Input/Output 6)
22. DQ7 (Data Input/Output 7)
23. VCC (Power Supply)
24. GND (Ground)
25. A8
26. A9
27. A11
28. A10
29. A13
30. WP (Write Protect)
31. RP (Reset/Ready)
32. NC (No Connection)

Functional Features

• Byte-wise programmable: The AT28C64B-20JA allows individual bytes to be programmed or erased, providing flexibility in data manipulation.
• Hardware and software protection: This chip offers write protection features, preventing accidental modification of stored data.
• High reliability: With a robust design and high endurance, the AT28C64B-20JA ensures reliable data storage and retrieval over an extended period.

Advantages and Disadvantages

Advantages

• Electrically erasable and reprogrammable
• High storage capacity
• Low power consumption
• Fast access time
• Flexible byte-wise programming

Disadvantages

• Limited erase/write cycles (10,000 minimum)
• Relatively higher cost compared to other memory technologies

Working Principles

The AT28C64B-20JA utilizes a combination of electronic circuits and memory cells to store and retrieve data. When the chip is powered on and enabled, the stored data can be accessed by the connected device. The chip's internal circuitry allows for both reading and writing operations, enabling data manipulation as required.

Detailed Application Field Plans

The AT28C64B-20JA finds applications in various electronic devices that require non-volatile data storage. Some common application fields include: - Embedded systems - Consumer electronics - Automotive electronics - Industrial control systems - Medical devices

Detailed and Complete Alternative Models

1. AT28C64B-15PU: Similar to AT28C64B-20JA but with a slower access time of 150 ns.
2. AT28C64B-25PI: Similar to AT28C64B-20JA but with a faster access time of 250 ns.
3. AT28C64B-12PC: Similar to