AT29C256-20TC

Product Overview

Category: Integrated Circuits (ICs)

Use: The AT29C256-20TC is a high-performance electrically erasable programmable read-only memory (EEPROM) IC. It is commonly used for non-volatile storage in various electronic devices.

Characteristics: - High-speed operation - Low power consumption - Wide voltage range - High endurance and reliability - Small form factor

Package: The AT29C256-20TC is available in a 32-lead Thin Small Outline Package (TSOP). This package offers compactness and ease of integration into electronic circuits.

Essence: The essence of the AT29C256-20TC lies in its ability to store and retrieve data reliably, even when power is removed. This makes it an essential component in many electronic systems where non-volatile memory is required.

Packaging/Quantity: The AT29C256-20TC is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Memory Size: 256 kilobits (32 kilobytes)
• Operating Voltage: 2.7V to 5.5V
• Access Time: 200 nanoseconds
• Erase/Write Cycles: 10,000 minimum
• Data Retention: 10 years minimum
• Organization: 32,768 words x 8 bits

Pin Configuration

The AT29C256-20TC features a 32-pin configuration. Here is a detailed pinout:

1. A16
2. A14
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VCC
13. OE#
14. CE#
15. WE#
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
25. GND
26. A8
27. A9
28. A11
29. A13
30. A15
31. BYTE#
32. WP#

Functional Features

The AT29C256-20TC offers the following functional features:

• Byte-wise programmability
• Fast random access times
• Automatic page write operation
• Software and hardware data protection
• Low power consumption in standby mode
• High-speed data transfer

Advantages and Disadvantages

Advantages: - High-performance EEPROM with fast access times - Wide voltage range allows compatibility with various systems - Small form factor enables integration into space-constrained designs - Reliable data retention and endurance - Easy to program and erase

Disadvantages: - Limited storage capacity compared to other memory technologies - Relatively higher cost per bit compared to some alternatives - Limited number of erase/write cycles

Working Principles

The AT29C256-20TC utilizes a floating gate transistor structure to store data. It employs a combination of electrical signals and programming algorithms to enable both programming and erasing of memory cells. The stored data can be accessed by providing appropriate address and control signals.

Detailed Application Field Plans

The AT29C256-20TC finds applications in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Communication devices - Automotive electronics - Industrial control systems

Its non-volatile nature makes it suitable for storing critical system parameters, firmware, configuration data, and other information that needs to be retained even when power is removed.

Detailed and Complete Alternative Models

• AT28C256
• AT27C256R
• M27C256B
• 29LV256
• W27C256

These alternative models offer similar functionality and can be considered as replacements for the AT29C256-20TC, depending on specific requirements and availability.

In conclusion, the AT29C256-20TC is a high-performance EEPROM IC that provides reliable non-volatile storage in various electronic systems. Its small form factor, wide voltage range, and fast access times make it a versatile choice for many applications. However, its limited storage capacity and erase/write cycle limitations should be taken into consideration when selecting alternatives.