AT28C256E-25LM/883

Product Overview

Category

The AT28C256E-25LM/883 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 AT28C256E-25LM/883 retains stored data even when power is removed.
• High capacity: It has a storage capacity of 256 kilobits (32 kilobytes).
• Low power consumption: The device operates on low power, making it suitable for battery-powered applications.
• Fast access time: It offers a fast access time of 250 nanoseconds.

Package

The AT28C256E-25LM/883 is available in a ceramic package, denoted by the "883" suffix. This package provides durability and protection to the internal components.

Essence

The essence of the AT28C256E-25LM/883 lies in its ability to reliably store and retrieve digital data in various electronic systems.

Packaging/Quantity

This product 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: -40°C to +85°C
• Data retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28C256E-25LM/883 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 AT28C256E-25LM/883 allows for byte-level read and write operations.
• Chip enable control: The CE# pin enables or disables the device, preventing accidental data corruption.
• Output enable control: The OE# pin controls the output buffer, allowing data to be read from the memory.
• Write enable control: The WE# pin enables or disables write operations to the memory.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data retention even during power loss.
• High storage capacity suitable for various applications.
• Low power consumption extends battery life in portable devices.
• Fast access time allows for quick data retrieval.

Disadvantages

• Limited endurance of 100,000 write cycles may be a constraint in certain high-write applications.
• Higher cost compared to volatile memory alternatives.

Working Principles

The AT28C256E-25LM/883 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, allowing for both read and write operations.

Detailed Application Field Plans

The AT28C256E-25LM/883 finds application in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Industrial control systems - Automotive electronics - Communication devices

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to the AT28C256E-25LM/883, but with a slower access time of 150 nanoseconds.
2. AT28C256-20PC: Another alternative with a faster access time of 200 nanoseconds.
3. AT28C256-12PI: Offers a lower power consumption compared to the AT28C256E-25LM/883.

These alternative models provide options with varying specifications to suit different application requirements.

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