AT28HC256E-90PC

Product Overview

Category

AT28HC256E-90PC 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-90PC offers fast read and write operations, making it suitable for applications that require 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-90PC ensures data integrity with its excellent endurance and long-term data retention capabilities.

Package

The AT28HC256E-90PC is available in a 28-pin plastic dual in-line package (PDIP). This package provides mechanical protection and facilitates easy integration into circuit boards.

Essence

The essence of the AT28HC256E-90PC lies in its ability to provide reliable, non-volatile data storage in a compact and energy-efficient form factor.

Packaging/Quantity

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

Specifications

• Operating voltage: 2.7V to 5.5V
• Access time: 90 nanoseconds
• Organization: 32K x 8 bits
• Endurance: 100,000 write cycles
• Data retention: 10 years
• Interface: Parallel

Detailed Pin Configuration

The AT28HC256E-90PC features a 28-pin configuration. The pinout 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. NC
27. NC
28. NC

Functional Features

• Byte-wise programmable: The AT28HC256E-90PC allows individual bytes to be programmed, erased, or read, providing flexibility in data manipulation.
• Hardware and software write protection: This chip offers various methods to protect the stored data from accidental modification, ensuring data integrity.
• High-speed operation: With a fast access time of 90 nanoseconds, this EEPROM enables efficient data retrieval and storage.

Advantages and Disadvantages

Advantages

• High-speed operation allows for quick data access.
• Low power consumption makes it suitable for battery-powered devices.
• Large storage capacity accommodates significant amounts of data.
• Reliable data retention ensures long-term integrity.

Disadvantages

• Limited endurance of 100,000 write cycles may be a constraint in certain applications.
• Parallel interface may not be compatible with all systems.

Working Principles

The AT28HC256E-90PC utilizes electrically erasable programmable read-only memory technology. It stores data by trapping electrical charges within its memory cells. These charges can be manipulated through electrical signals to program, erase, or read the stored data.

Detailed Application Field Plans

The AT28HC256E-90PC finds applications in various fields, including but not limited to: 1. Microcontrollers: Used for storing firmware, configuration data, and non-volatile variables. 2. Computers: Employed in BIOS chips, expansion cards, and other storage-dependent components. 3. Consumer electronics: Integrated into devices such as digital cameras, smartphones, and gaming consoles for data storage purposes.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the AT28HC256E-90PC include: - AT28C256-15PU - 24LC256-I/P - M93C86-WMN6TP

These alternatives provide comparable features and can be considered based on specific application requirements.

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