AT29LF020-25JC

Product Overview

Category

AT29LF020-25JC belongs to the category of non-volatile memory devices.

Use

This product is primarily used for data storage in various electronic devices such as microcontrollers, embedded systems, and consumer electronics.

Characteristics

• Non-volatile: The AT29LF020-25JC retains stored data even when power is removed.
• High capacity: This device has a storage capacity of 2 megabits (256 kilobytes).
• Low power consumption: It operates at low voltage and consumes minimal power during read and write operations.
• Fast access time: The AT29LF020-25JC offers a fast access time of 25 nanoseconds.

Package

The AT29LF020-25JC is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic devices, ensuring data integrity even in the absence of power.

Packaging/Quantity

The AT29LF020-25JC is typically packaged in reels or tubes, with a quantity of 100 units per reel/tube.

Specifications

• Memory Type: Flash
• Organization: 256K x 8 bits
• Supply Voltage: 2.7V - 3.6V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 20 years
• Endurance: 10,000 erase/write cycles

Detailed Pin Configuration

The AT29LF020-25JC has a total of 32 pins, each serving a specific purpose. Here is a 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. CE# - Chip Enable Input
18. OE# - Output Enable Input
19. WE# - Write Enable Input
20. RESET# - Reset Input
21. VCC - Power Supply
22. GND - Ground
23. DQ0 - Data Input/Output
24. DQ1 - Data Input/Output
25. DQ2 - Data Input/Output
26. DQ3 - Data Input/Output
27. DQ4 - Data Input/Output
28. DQ5 - Data Input/Output
29. DQ6 - Data Input/Output
30. DQ7 - Data Input/Output
31. NC - No Connection
32. NC - No Connection

Functional Features

The AT29LF020-25JC offers the following functional features:

• Byte-wise programmable: Allows individual bytes to be programmed or erased.
• Sector erase capability: Enables erasing of entire sectors for efficient memory management.
• Hardware and software protection: Provides options for protecting critical data from accidental modification or unauthorized access.
• Fast programming time: The device supports fast programming operations, reducing overall system latency.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity even during power loss.
• High storage capacity suitable for a wide range of applications.
• Low power consumption extends battery life in portable devices.
• Fast access time enhances overall system performance.

Disadvantages

• Limited endurance: The AT29LF020-25JC has a finite number of erase/write cycles.
• Relatively higher cost compared to other memory technologies.
• Requires additional circuitry for interfacing with the host system.

Working Principles

The AT29LF020-25JC utilizes flash memory technology, which is based on floating-gate transistors. These transistors store charge in a floating gate, representing binary data (0 or 1). The stored charge can be electrically erased and reprogrammed using specific voltage levels and timing sequences.

When data needs to be written, the appropriate address is provided along with the data input. The device then applies the necessary programming voltage to the selected memory cells, altering their charge state accordingly. Reading data involves providing the desired address and enabling the output, allowing the stored data to be retrieved.

Detailed Application Field Plans

The AT29LF020-25JC finds applications in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration data, and program code.
2. Embedded Systems: Provides non-volatile storage