AT28C64E-15JI

Product Overview

Category

AT28C64E-15JI 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

• Electrically erasable: The AT28C64E-15JI can be erased and reprogrammed electronically, making it convenient for updating data.
• Non-volatile: The stored data remains even when power is removed.
• High capacity: This chip has a capacity of 64 kilobits, allowing for substantial data storage.
• Low power consumption: The AT28C64E-15JI operates efficiently, minimizing power usage.
• Fast access time: With a speed rating of 150 nanoseconds, this chip provides quick data retrieval.

Package

The AT28C64E-15JI comes in a 32-pin plastic J-leaded chip carrier (PLCC) package. This package offers protection and easy integration into circuit boards.

Essence

The essence of the AT28C64E-15JI lies in its ability to store and retrieve data reliably, while being easily programmable and erasable.

Packaging/Quantity

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

Specifications

• Capacity: 64 kilobits (8 kilobytes)
• Organization: 8,192 words × 8 bits
• Supply voltage: 2.7V to 5.5V
• Access time: 150 nanoseconds
• Operating temperature range: -40°C to +85°C
• Erase/write cycles: 10,000 minimum
• Data retention: 10 years minimum

Detailed Pin Configuration

The AT28C64E-15JI has a total of 32 pins, each serving a specific function. The pin configuration is as follows:

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. NC
15. I/O0
16. I/O1
17. I/O2
18. I/O3
19. I/O4
20. I/O5
21. I/O6
22. I/O7
23. CE
24. A8
25. A9
26. A11
27. A10
28. /BYTE
29. VSS
30. NC
31. NC
32. NC

Functional Features

• Byte-wide operations: The AT28C64E-15JI supports both byte-level read and write operations.
• Chip enable (CE) control: The CE pin allows for easy activation or deactivation of the chip.
• Output enable (/OE) control: The /OE pin enables or disables the output buffers, facilitating data retrieval.
• Write enable (/WE) control: The /WE pin controls the write operation, ensuring data integrity.

Advantages and Disadvantages

Advantages

• High storage capacity
• Electrically erasable and reprogrammable
• Low power consumption
• Fast access time
• Reliable data retention

Disadvantages

• Limited erase/write cycles
• Relatively higher cost compared to other memory technologies

Working Principles

The AT28C64E-15JI utilizes a combination of electronic circuits and memory cells to store and retrieve data. When the chip is powered, the stored data remains intact due to its non-volatile nature. The chip can be selectively programmed or erased by applying specific voltage levels to the control pins.

Detailed Application Field Plans

The AT28C64E-15JI finds applications in various fields, including: 1. Microcontrollers: Used for storing firmware, configuration data, and program code. 2. Computers: Employed as non-volatile storage for BIOS (Basic Input/Output System) and other critical data. 3. Consumer electronics: Integrated into devices like digital cameras, printers, and set-top boxes for data storage purposes.

Detailed and Complete Alternative Models

1. AT28C64B-15JI: Similar to AT28C64E-15JI, but with a different organization and access time.
2. AT28C256-15JI: Offers higher capacity and compatibility with the same package and pin configuration.
3. AT28C16-15JI: Lower capacity alternative with similar characteristics and pin configuration.

These alternative models provide options based on specific requirements, such as capacity and compatibility.

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