AT28C256-20JI

Product Overview

Category

AT28C256-20JI belongs to the category of non-volatile memory devices.

Use

It is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

• Non-volatile: Retains data even when power is turned off.
• High storage capacity: 256 kilobits (32 kilobytes) of memory.
• Fast access time: Operates at a speed of 200 nanoseconds.
• Low power consumption: Designed to minimize energy usage.
• Durable: Can withstand multiple read and write cycles without degradation.

Package

AT28C256-20JI is available in a 28-pin JEDEC-standard PLCC package.

Essence

The essence of AT28C256-20JI lies in its ability to provide reliable and non-volatile storage for electronic systems, ensuring data integrity and accessibility.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each containing a specific quantity of AT28C256-20JI chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Access Time: 200 nanoseconds
• Supply Voltage: 4.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years minimum
• Endurance: 10,000 erase/write cycles

Detailed Pin Configuration

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. /OE - Output Enable
18. /WE - Write Enable
19. /CE - Chip Enable
20. VCC - Power Supply
21. DQ0 - Data Input/Output
22. DQ1 - Data Input/Output
23. DQ2 - Data Input/Output
24. DQ3 - Data Input/Output
25. DQ4 - Data Input/Output
26. DQ5 - Data Input/Output
27. DQ6 - Data Input/Output
28. DQ7 - Data Input/Output

Functional Features

• Easy integration: Compatible with standard microcontrollers and digital systems.
• High-speed operation: Allows for efficient data transfer and processing.
• Non-volatile storage: Ensures data retention even during power loss.
• Low power consumption: Ideal for battery-powered devices.
• Robust design: Withstands multiple read and write cycles without degradation.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High storage capacity for various applications.
• Fast access time allows for quick data retrieval.
• Low power consumption prolongs battery life.
• Durable design withstands frequent use.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower access time compared to volatile memory.
• Higher cost per unit compared to some alternative memory options.

Working Principles

AT28C256-20JI utilizes a combination of electronic circuits and semiconductor technology to store and retrieve digital information. It employs a floating-gate transistor structure that can be electrically programmed and erased. The memory cells are organized in a matrix, with each cell representing a bit of data. By applying appropriate voltage levels to the address and control pins, data can be read from or written to specific memory locations.

Detailed Application Field Plans

AT28C256-20JI finds applications in various electronic systems, including but not limited to: - Embedded systems - Microcontrollers - Industrial automation - Automotive electronics - Consumer electronics

Its high storage capacity, non-volatile nature, and compatibility with standard microcontrollers make it suitable for storing program code, configuration data, and other critical information in these fields.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AT28C256-20JI include: - AT28C256-15PU: Similar specifications but operates at a slower speed (150 nanoseconds). - AT28C256-25PC: Similar specifications but operates at a faster speed (250 nanoseconds). - AT28C256-30DM/883: Military-grade version with extended temperature range and enhanced durability.

These alternative models provide options for different performance requirements and environmental conditions.

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