AT28HC256F-90JA

Product Overview

Category

AT28HC256F-90JA 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
• Low power consumption
• Non-volatile memory
• Large storage capacity
• Reliable data retention
• Easy to interface with other electronic components

Package

AT28HC256F-90JA is available in a 32-pin plastic package.

Essence

The essence of this product lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

AT28HC256F-90JA is typically packaged in reels or tubes, with a quantity of 1000 units per package.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Access Time: 90ns
• Memory Size: 256 kilobits (32 kilobytes)
• Organization: 32K x 8 bits
• Interface: Parallel
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. VSS (Ground)
10. CE (Chip Enable)
11. OE (Output Enable)
12. WE (Write Enable)
13. I/O0
14. I/O1
15. I/O2
16. I/O3
17. I/O4
18. I/O5
19. I/O6
20. I/O7
21. NC (No Connection)
22. VCC (Power Supply)
23. NC
24. NC
25. NC
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. NC

Functional Features

• High-speed operation allows for fast data access and retrieval.
• Low power consumption ensures efficient use of energy.
• Non-volatile memory retains data even when power is disconnected.
• Large storage capacity provides ample space for storing digital information.
• Easy interface with other electronic components simplifies integration into various systems.

Advantages and Disadvantages

Advantages

• Fast access time enables quick data retrieval.
• Low power consumption prolongs battery life in portable devices.
• Reliable data retention ensures long-term storage integrity.
• Large storage capacity accommodates extensive data requirements.
• Easy integration with other components simplifies system design.

Disadvantages

• Limited endurance may restrict the number of write cycles.
• Parallel interface may require more pins and complex circuitry compared to serial interfaces.

Working Principles

AT28HC256F-90JA utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. The memory cells are organized in a grid-like structure, with each cell capable of storing one bit of information. When data needs to be written, the appropriate address is selected, and the desired data is applied to the input pins. The write enable signal is then activated, causing the data to be stored in the selected memory cell. Reading data involves selecting the desired address and activating the output enable signal, allowing the stored data to be read from the output pins.

Detailed Application Field Plans

AT28HC256F-90JA finds applications in various fields, including: 1. Microcontrollers: Used for program storage and data logging. 2. Computers: Used for BIOS storage and firmware updates. 3. Consumer Electronics: Used for configuration settings and data storage in devices like smart TVs and digital cameras.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar specifications with a slower access time of 150ns.
2. AT28HC256E-90PU: Higher endurance with 1,000,000 write cycles and an access time of 90ns.
3. AT28HC256L-90PU: Lower power consumption with an access time of 90ns.

These alternative models provide options based on specific requirements such as speed, endurance, and power consumption.

In conclusion, AT28HC256F-90JA is a high-speed, low-power EEPROM chip that offers reliable non-volatile data storage. Its large storage capacity, easy integration, and various applications make it a versatile choice for electronic devices.