AT28C64-15JI

Product Overview

Category

AT28C64-15JI belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is primarily 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 AT28C64-15JI has a storage capacity of 64 kilobits (8 kilobytes).
• Low power consumption: This chip operates on low power, making it suitable for battery-powered devices.

Package

The AT28C64-15JI is available in a 32-pin plastic J-leaded chip carrier (PLCC) package.

Essence

The essence of this product lies in its ability to store and retrieve data reliably, while offering flexibility for reprogramming as needed.

Packaging/Quantity

The AT28C64-15JI is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply voltage: 5V ±10%
• Operating temperature range: -40°C to +85°C
• Access time: 150 nanoseconds
• Endurance: 1,000,000 erase/write cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28C64-15JI has a total of 32 pins. Here is a detailed pin configuration:

1. A14
2. A12
3. A7
4. A6
5. A5
6. A4
7. A3
8. A2
9. A1
10. A0
11. /OE
12. /WE
13. VCC
14. A8
15. A9
16. A11
17. A10
18. I/O0
19. I/O1
20. I/O2
21. I/O3
22. I/O4
23. I/O5
24. I/O6
25. I/O7
26. /CE1
27. /CE2
28. /CE3
29. /CE4
30. GND
31. NC
32. NC

Functional Features

• Byte-wise programmable: The AT28C64-15JI allows individual bytes to be programmed or erased.
• Hardware and software data protection: Various mechanisms are in place to prevent accidental modification or erasure of data.
• Fast access time: With an access time of 150 nanoseconds, this chip enables quick data retrieval.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity even during power loss.
• Electrically erasable capability allows for easy reprogramming.
• High endurance and long data retention period.
• Low power consumption makes it suitable for battery-powered devices.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower access time compared to some modern memory solutions.

Working Principles

The AT28C64-15JI utilizes a combination of floating gate transistors and control circuitry to store and retrieve data. When programming, an electrical charge is applied to the floating gate, altering its threshold voltage and storing the desired data. Erasing is achieved by removing the charge from the floating gate using electrical pulses.

Detailed Application Field Plans

The AT28C64-15JI finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers. 2. Computer systems: Employed for BIOS storage and firmware updates. 3. Consumer electronics: Used in devices such as gaming consoles, set-top boxes, and smart appliances for data storage.

Detailed and Complete Alternative Models

1. AT28C64B-15JI: Similar to AT28C64-15JI with minor variations in specifications.
2. AT28C256-15JI: Higher capacity EEPROM chip with 256 kilobits (32 kilobytes) of storage.
3. AT28HC256-12JI: EEPROM chip with extended temperature range (-40°C to +125°C) for harsh environments.

These alternative models offer different capacities and features to suit specific application requirements.

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