AT28C256-20UM/883-815

Product Overview

Category

AT28C256-20UM/883-815 belongs to the category of non-volatile memory devices.

Use

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

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High capacity: The AT28C256-20UM/883-815 has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: It operates with a maximum access time of 200 nanoseconds.
• Low power consumption: The device is designed to minimize power usage during operation.
• Durable: It can withstand harsh environmental conditions due to its military-grade construction.

Package

The AT28C256-20UM/883-815 is available in a ceramic dual-inline package (DIP).

Essence

This product is an essential component in various electronic systems, enabling reliable and non-volatile data storage.

Packaging/Quantity

The AT28C256-20UM/883-815 is typically packaged in tubes or trays, with each containing a specific quantity of devices. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Organization: 32K x 8 bits
• Supply voltage: 4.5V to 5.5V
• Operating temperature range: -55°C to +125°C
• Access time: 200 ns
• Standby current: 100 μA (max)
• Package type: Ceramic DIP

Detailed Pin Configuration

The AT28C256-20UM/883-815 has a total of 28 pins. The pin configuration is as follows:

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. VCC
10. OE#
11. CE#
12. WE#
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
22. GND
23. NC
24. NC
25. NC
26. NC
27. NC
28. NC

Functional Features

• Byte-wide access: The AT28C256-20UM/883-815 allows individual bytes to be read or written.
• Easy interfacing: It supports standard microcontroller interfaces, making it compatible with a wide range of systems.
• Hardware data protection: The device features a write protect pin (WP#) that can be used to prevent accidental writes.
• High reliability: The product is designed to provide reliable and consistent performance in demanding applications.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• High storage capacity for various applications.
• Fast access time enables quick data retrieval.
• Low power consumption for energy-efficient operation.
• Military-grade construction enhances durability.

Disadvantages

• Relatively larger physical size compared to newer memory technologies.
• Limited write endurance compared to some other memory types.
• Higher cost compared to certain alternative memory options.

Working Principles

The AT28C256-20UM/883-815 utilizes electrically erasable programmable read-only memory (EEPROM) technology. It stores data by trapping electrical charges within floating gate transistors. These charges can be selectively removed or added using specific voltage levels applied to the control pins. This allows for both reading and writing of data.

Detailed Application Field Plans

The AT28C256-20UM/883-815 finds applications in various fields, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Aerospace and defense equipment 5. Medical devices

Detailed and Complete Alternative Models

Some alternative models to the AT28C256-20UM/883-815 include: - AT28C256-15PU: Similar specifications but operates at a slower access time of 150 ns. - AT28C256-25PC: Similar specifications but operates at a faster access time of 250 ns. - AT28C256-12PI: Similar specifications but operates at a lower supply voltage range of 4.5V to 5.0V.

These alternative models offer different performance characteristics and may be suitable for specific application requirements.

In conclusion, the AT28C256-20UM/883-815 is a non-volatile memory device with a high storage capacity and fast access time. It is widely used in various electronic systems that require reliable and durable data storage. While it has certain limitations, it offers several advantages such as non-v