AT29C256-20JI

Product Overview

Category

AT29C256-20JI belongs to the category of non-volatile memory integrated circuits.

Use

It is primarily used for storing and retrieving digital information in electronic devices.

Characteristics

• Non-volatile: Retains data even when power is turned off.
• High storage capacity: 256 kilobits (32 kilobytes).
• Fast access time: Operates at a speed of 200 nanoseconds.
• Low power consumption: Designed to minimize energy usage.
• Durable: Can withstand multiple read/write cycles without degradation.

Package

AT29C256-20JI is available in a 32-pin plastic J-lead chip carrier (PLCC) package.

Essence

The essence of AT29C256-20JI lies in its ability to provide reliable and non-volatile storage for electronic devices.

Packaging/Quantity

It is typically sold in reels or tubes, with each reel or tube containing a specific quantity of AT29C256-20JI chips.

Specifications

• Organization: 32K x 8 bits
• Supply voltage: 4.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Access time: 200 ns
• Standby current: 100 μA (typical)
• Package dimensions: 14mm x 20mm x 3.8mm

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. VPP
13. OE#
14. CE#
15. WE#
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. VCC
21. GND
22. NC
23. A8
24. A9
25. A11
26. A10
27. I/O7
28. I/O6
29. I/O5
30. I/O4
31. NC
32. NC

Functional Features

• Easy interfacing: Compatible with a wide range of microcontrollers and digital systems.
• High-speed operation: Enables fast data access and transfer.
• Low power consumption: Ideal for battery-powered devices.
• Reliable data retention: Ensures stored information remains intact over extended periods.
• Multiple read/write cycles: Can handle frequent data updates without degradation.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data persistence.
• High storage capacity for its size.
• Fast access time allows for efficient data retrieval.
• Low power consumption prolongs battery life.
• Durable design withstands repeated use.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively higher cost per bit compared to some alternatives.
• Requires careful handling to prevent damage during installation or removal.

Working Principles

AT29C256-20JI utilizes flash memory technology, which is based on the concept of floating-gate transistors. The device stores data by trapping electric charges in the floating gate, which alters the transistor's behavior. This trapped charge can be retained even when power is removed, making it non-volatile. To read or write data, specific voltage levels are applied to the control pins, enabling the manipulation of the stored charges.

Detailed Application Field Plans

AT29C256-20JI finds applications in various electronic devices, including but not limited to: - Microcontrollers - Embedded systems - Industrial automation equipment - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar specifications, but with a different package (PDIP).
2. AT29C256-90JI: Higher access time (90 ns), suitable for less time-critical applications.
3. AT29C256-12PC: Lower power consumption (12 mA), ideal for battery-powered devices.

These alternative models offer similar functionality to AT29C256-20JI but may vary in terms of specific characteristics or package options.

In conclusion, AT29C256-20JI is a non-volatile memory integrated circuit that provides reliable storage for digital information. With its high capacity, fast access time, and low power consumption, it is well-suited for various electronic applications. While it has certain limitations, such as limited storage capacity and higher cost per bit, it offers advantages like data persistence and durability. Its working principle is based on flash memory technology, utilizing floating-gate transistors. Additionally, there are alternative models available with different specifications and package options to suit specific requirements.