AT28HC256E-90JU

Product Overview

Category

AT28HC256E-90JU belongs to the category of high-speed, low-power 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

• High-speed operation: The AT28HC256E-90JU offers fast read and write operations, making it suitable for applications requiring quick access to stored data.
• Low power consumption: This EEPROM chip is designed to minimize power consumption, making it ideal for battery-powered devices.
• Large storage capacity: With a capacity of 256 kilobits (32 kilobytes), this chip can store a significant amount of data.
• Reliable data retention: The AT28HC256E-90JU ensures data integrity with a guaranteed minimum data retention period of 10 years.

Package

The AT28HC256E-90JU comes in a standard 32-pin plastic J-lead chip carrier (PLCC) package. This package provides mechanical protection and facilitates easy integration into circuit boards.

Essence

The essence of the AT28HC256E-90JU lies in its ability to provide reliable, high-speed, and low-power data storage for electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each containing a specific quantity of AT28HC256E-90JU chips. The exact quantity depends on the manufacturer's specifications and customer requirements.

Specifications

• Supply voltage: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Access time: 90 nanoseconds
• Organization: 32K x 8 bits
• Write endurance: 100,000 cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28HC256E-90JU has a total of 32 pins. The pin configuration is as follows:

1. A16
2. A15
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VCC
13. OE#
14. CE#
15. WE#
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. NC
25. GND
26. A8
27. A9
28. A11
29. A10
30. A14
31. A13
32. NC

Functional Features

• High-speed operation: The AT28HC256E-90JU offers fast access times, allowing for efficient data retrieval and storage.
• Low power consumption: This chip is designed to minimize power usage, making it suitable for battery-powered devices.
• Easy integration: The standard PLCC package and pin configuration facilitate straightforward integration into electronic circuits.
• Reliable data retention: The AT28HC256E-90JU ensures long-term data integrity with its guaranteed minimum data retention period of 10 years.

Advantages and Disadvantages

Advantages

• Fast read and write operations
• Low power consumption
• Large storage capacity
• Reliable data retention

Disadvantages

• Limited write endurance (100,000 cycles)
• Requires external control signals for operation

Working Principles

The AT28HC256E-90JU operates based on the principles of EEPROM technology. It utilizes electrically controlled floating gate transistors to store and retrieve data. When writing data, an electrical charge is applied to the floating gate, altering its conductivity and storing the desired information. Reading data involves sensing the conductivity state of the floating gate transistors.

Detailed Application Field Plans

The AT28HC256E-90JU finds applications in various fields, including:

1. Microcontrollers: Used for program storage and data logging.
2. Computers: Employed for BIOS (Basic Input/Output System) storage and firmware updates.
3. Consumer electronics: Utilized for configuration storage in devices such as smart TVs, set-top boxes, and gaming consoles.

Detailed and Complete Alternative Models

1. AT28C256-15PU: A similar EEPROM chip with a slower access time of 150 nanoseconds.
2. AT28HC256E-12PI: Offers a faster access time of 120 nanoseconds compared to the AT28HC256E-90JU.
3. AT28HC256E-70JU: Provides a lower access time of 70