AT28LV256-25TI

Product Overview

Category

AT28LV256-25TI 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 AT28LV256-25TI retains stored data even when power is removed.
• High storage capacity: It has a capacity of 256 kilobits (32 kilobytes).
• Low power consumption: The device operates at low power levels, making it suitable for battery-powered applications.
• Fast access time: With a maximum access time of 250 nanoseconds, it provides quick data retrieval.

Package

The AT28LV256-25TI is available in a standard 28-pin Thin Small Outline Package (TSOP).

Essence

This product is an electrically erasable programmable read-only memory (EEPROM) chip. It allows users to write, erase, and reprogram data multiple times.

Packaging/Quantity

The AT28LV256-25TI is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply voltage: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Maximum clock frequency: 20 MHz
• Data retention: 10 years
• Endurance: 100,000 write/erase cycles

Pin Configuration

The AT28LV256-25TI has a total of 28 pins. Here is the detailed pin configuration:

1. A16
2. A15
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VSS (Ground)
13. OE (Output Enable)
14. CE (Chip Enable)
15. WE (Write Enable)
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. NC (No Connection)
25. VCC (Power Supply)
26. A8
27. A9
28. A11

Functional Features

• Byte-wise programmable: The AT28LV256-25TI allows individual bytes to be programmed or erased, providing flexibility in data storage.
• Hardware and software data protection: It offers various mechanisms to protect stored data from accidental modification or unauthorized access.
• Automatic sleep mode: When not in use, the device enters a low-power sleep mode to conserve energy.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High storage capacity for storing large amounts of data.
• Low power consumption extends battery life in portable devices.
• Fast access time enables quick retrieval of information.

Disadvantages

• Limited endurance: The number of write/erase cycles is finite, which may affect the lifespan of the device.
• Relatively higher cost compared to other types of memory.

Working Principles

The AT28LV256-25TI utilizes electrically erasable programmable read-only memory (EEPROM) technology. It consists of a grid of memory cells that can be individually programmed or erased using electrical signals. Data is stored as charge within these cells, and the presence or absence of charge determines the stored information.

Detailed Application Field Plans

The AT28LV256-25TI finds applications in various electronic systems, including but not limited to: - Embedded systems - Consumer electronics - Automotive electronics - Industrial control systems - Communication devices

Detailed and Complete Alternative Models

• AT28C256: Similar to AT28LV256-25TI, but operates at a wider voltage range (4.5V to 5.5V).
• AT29C256: Flash memory alternative with similar capacity and functionality.
• AT27C256R: One-time programmable (OTP) memory chip with the same capacity.

These alternative models offer similar features and can be considered as substitutes for the AT28LV256-25TI depending on specific requirements.

In conclusion, the AT28LV256-25TI is a versatile non-volatile memory chip that provides high storage capacity, low power consumption, and fast access time. Its byte-wise programmability and data protection features make it suitable for various applications in different industries. While it has limitations in terms of endurance and cost, there are alternative models available to cater to specific needs.