AT28C256E-20LM/883

Product Overview

Category

AT28C256E-20LM/883 belongs to the category of non-volatile memory devices.

Use

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

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT28C256E-20LM/883 has a storage capacity of 256 kilobits (32 kilobytes).
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• Fast access time: The device offers quick read and write operations.
• Durable: It can withstand multiple read and write cycles without degradation.

Package

The AT28C256E-20LM/883 is available in a 28-pin ceramic leadless chip carrier (CLCC) package.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic systems.

Packaging/Quantity

The AT28C256E-20LM/883 is typically packaged in tubes or trays, with a quantity of 25 units per tube/tray.

Specifications

• Operating voltage: 5V
• Access time: 200 nanoseconds
• Data retention: 10 years
• Endurance: 1,000,000 write cycles
• Temperature range: -55°C to +125°C

Detailed Pin Configuration

The AT28C256E-20LM/883 has a total of 28 pins. Here is the 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. CE - Chip Enable
19. WE - Write Enable
20. I/O0 - Data input/output
21. I/O1 - Data input/output
22. I/O2 - Data input/output
23. I/O3 - Data input/output
24. VCC - Power supply
25. GND - Ground
26. NC - No connection
27. NC - No connection
28. NC - No connection

Functional Features

• Random access: The AT28C256E-20LM/883 allows for random access to any memory location.
• Byte-wise programming: It supports byte-wise programming, enabling efficient data storage and retrieval.
• Hardware and software compatibility: This device is compatible with a wide range of electronic systems and can be easily integrated into existing designs.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity even during power loss.
• High storage capacity for various applications.
• Low power consumption extends battery life.
• Fast access time enables quick data retrieval.
• Durable design withstands frequent read and write operations.

Disadvantages

• Limited storage capacity compared to other memory devices.
• Relatively higher cost per unit compared to some alternatives.
• Requires careful handling to prevent damage to the pins or package.

Working Principles

The AT28C256E-20LM/883 utilizes electrically erasable and programmable read-only memory (EEPROM) technology. It stores data in a grid of memory cells, with each cell capable of holding one bit of information. The device uses electrical signals to write, read, and erase data from these cells.

During a write operation, the desired data is applied to the input pins, and the appropriate control signals are activated. The data is then stored in the selected memory location. Reading data involves activating the necessary control signals and retrieving the stored information from the specified address.

Detailed Application Field Plans

The AT28C256E-20LM/883 finds applications in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Industrial automation - Automotive electronics - Communication devices

Its reliable non-volatile storage capability makes it suitable for applications that require data persistence even in the absence of power.

Detailed and Complete Alternative Models

While the AT28C256E-20LM/883 offers specific features and characteristics, there are alternative models available in the market that cater to different requirements. Some notable alternatives include:

1. AT29C256 - Similar capacity EEPROM with lower power consumption.
2. AT45DB256 - Flash memory with higher storage