AT29C257-70JI

Product Overview

Category

AT29C257-70JI belongs to the category of non-volatile memory integrated circuits.

Use

It is primarily used for data storage and retrieval in various electronic devices.

Characteristics

• Non-volatile: Retains stored data even when power is turned off.
• High capacity: The AT29C257-70JI has a capacity of 256 kilobits (32 kilobytes).
• Fast access time: It operates at a speed of 70 nanoseconds.
• Low power consumption: Designed to minimize power usage.
• Reliable: Offers high endurance and data retention capabilities.

Package

The AT29C257-70JI is available in a 28-pin plastic dual in-line package (PDIP).

Essence

This product is an essential component for storing and accessing data in electronic systems.

Packaging/Quantity

The AT29C257-70JI is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Access Time: 70 nanoseconds
• Supply Voltage: 4.5V - 5.5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 28-pin PDIP

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. E (Chip Enable)
13. G (Output Enable)
14. VCC (Power Supply)
15. DQ0 (Data Input/Output 0)
16. DQ1 (Data Input/Output 1)
17. DQ2 (Data Input/Output 2)
18. DQ3 (Data Input/Output 3)
19. DQ4 (Data Input/Output 4)
20. DQ5 (Data Input/Output 5)
21. DQ6 (Data Input/Output 6)
22. DQ7 (Data Input/Output 7)
23. CE1 (Chip Enable 1)
24. CE2 (Chip Enable 2)
25. OE (Output Enable)
26. WE (Write Enable)
27. NC (No Connection)
28. GND (Ground)

Functional Features

• Random access: Allows for direct access to any memory location.
• Byte-wise programming: Enables individual byte programming.
• Sector erase capability: Supports sector-based erasure for efficient memory management.
• Automatic write timing: Simplifies the programming process by automatically handling write cycles.

Advantages and Disadvantages

Advantages

• Non-volatile nature ensures data retention even during power loss.
• High capacity allows for storing a significant amount of data.
• Fast access time enables quick retrieval of information.
• Low power consumption helps conserve energy in electronic devices.
• Reliable performance ensures long-term data integrity.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Relatively slower access times compared to volatile memory options.
• Higher cost per unit compared to some alternative memory solutions.

Working Principles

The AT29C257-70JI operates based on Flash memory technology. It utilizes floating-gate transistors to store and retrieve data. When data is written, electrons are trapped in the floating gate, altering the transistor's behavior. This change in behavior allows the stored data to be retained even when power is removed. During read operations, the stored charge is sensed, allowing the retrieval of the stored information.

Detailed Application Field Plans

The AT29C257-70JI finds applications in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Automotive electronics - Industrial control systems - Communication devices

Detailed and Complete Alternative Models

1. AT28C256-15PU: 256 kilobit EEPROM with a 150 nanosecond access time.
2. AT49F002N-55JI: 256 kilobit Flash memory with a 55 nanosecond access time.
3. AM29F040B-90JC: 512 kilobit Flash memory with a 90 nanosecond access time.

These alternative models offer similar functionality and can be considered as substitutes for the AT29C257-70JI based on specific requirements.

In conclusion, the AT29C257-70JI is a non-volatile memory integrated circuit that provides reliable data storage and retrieval capabilities. With its high capacity, fast access time, and low power consumption, it is suitable for various electronic applications. While it has certain limitations, alternative models are available to meet specific needs.