AT28LV256-25PI

Product Overview

Category

AT28LV256-25PI belongs to the category of integrated circuits (ICs).

Use

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

Characteristics

• Non-volatile memory: The AT28LV256-25PI retains stored data even when power is turned off.
• High storage capacity: It has a capacity of 256 kilobits, allowing for the storage of a large amount of data.
• Low power consumption: The AT28LV256-25PI operates on low power, making it suitable for battery-powered devices.
• Fast access time: With an access time of 250 nanoseconds, this IC provides quick retrieval of stored data.

Package

The AT28LV256-25PI is available in a 28-pin plastic dual in-line package (PDIP), which is a common package type for ICs.

Essence

The essence of the AT28LV256-25PI lies in its ability to provide non-volatile memory storage with high capacity and fast access times.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of AT28LV256-25PI ICs. The exact quantity may vary depending on the supplier.

Specifications

• Memory Type: EEPROM (Electrically Erasable Programmable Read-Only Memory)
• Memory Size: 256 kilobits
• Access Time: 250 ns
• Supply Voltage: 2.7V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 28-pin PDIP

Detailed Pin Configuration

The AT28LV256-25PI has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

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. /OE: Output Enable
17. /WE: Write Enable
18. /CE: Chip Enable
19. VSS: Ground
20. DQ0: Data Input/Output
21. DQ1: Data Input/Output
22. DQ2: Data Input/Output
23. DQ3: Data Input/Output
24. DQ4: Data Input/Output
25. DQ5: Data Input/Output
26. DQ6: Data Input/Output
27. DQ7: Data Input/Output
28. VCC: Supply Voltage

Functional Features

The AT28LV256-25PI offers the following functional features:

• Byte-wise Read and Write Operations: The IC allows for individual byte-level read and write operations, providing flexibility in data manipulation.
• Hardware Data Protection: It includes built-in hardware protection mechanisms to prevent accidental data corruption during power fluctuations or external disturbances.
• High Reliability: With its non-volatile memory technology, the AT28LV256-25PI ensures reliable storage of data over extended periods without the need for constant power supply.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High storage capacity allows for storing a large amount of data.
• Low power consumption makes it suitable for battery-powered devices.
• Fast access time enables quick retrieval of stored information.

Disadvantages

• Limited write endurance: The AT28LV256-25PI has a finite number of write cycles before the memory cells may become unreliable.
• Relatively larger package size compared to more modern ICs with similar capacities.

Working Principles

The AT28LV256-25PI utilizes EEPROM technology to store and retrieve digital information. It employs a combination of electrically controlled floating gate transistors and charge storage mechanisms to retain data even when power is turned off. The address inputs and control signals determine the specific memory location to read from or write to, while the data input/output pins facilitate the transfer of information.

Detailed Application Field Plans

The AT28LV256-25PI finds applications in various electronic devices that require non-volatile memory storage. Some common application fields include:

1. Embedded Systems: The IC can be used in microcontrollers and other embedded systems to store program code, configuration settings, and data logs.
2. Consumer Electronics: It can be utilized in devices such as