AT29C257-70JC-T

Product Overview

Category

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

Use

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

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT29C257-70JC-T has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: It operates at a speed of 70 nanoseconds, allowing for quick data retrieval.
• Low power consumption: The device is designed to minimize power usage, making it suitable for battery-powered applications.

Package

The AT29C257-70JC-T 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 digital data in various electronic systems.

Packaging/Quantity

The AT29C257-70JC-T is typically packaged in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Memory Type: Electrically Erasable Programmable Read-Only Memory (EEPROM)
• Organization: 32 kilobytes x 8 bits
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT29C257-70JC-T has a total of 32 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. VPP
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. VCC
25. GND
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. NC

Functional Features

• Byte-wise programmable: The AT29C257-70JC-T allows individual bytes to be programmed or erased.
• Easy interface: It supports a standard parallel interface, making it compatible with various microcontrollers and systems.
• Hardware data protection: The device features a write protection mechanism to prevent accidental modification of stored data.
• High reliability: With its non-volatile nature and robust design, the AT29C257-70JC-T ensures data integrity and long-term storage.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Fast access time enables quick data retrieval.
• Low power consumption makes it suitable for battery-powered devices.
• High capacity provides ample storage space for digital information.

Disadvantages

• Limited endurance: The device has a finite number of write cycles before it may become unreliable.
• Relatively larger package size compared to newer memory technologies.
• Requires external programming voltage (VPP) for certain operations.

Working Principles

The AT29C257-70JC-T utilizes EEPROM technology to store and retrieve digital data. It employs a combination of electrical signals and charge trapping mechanisms to program and erase memory cells. When data is written, charges are trapped in specific locations within the memory array, representing the stored information. During read operations, these charges are sensed and converted back into digital data.

Detailed Application Field Plans

The AT29C257-70JC-T finds applications in various electronic systems that require non-volatile storage, such as: - Embedded systems - Automotive electronics - Industrial control systems - Consumer electronics - Communication devices

Detailed and Complete Alternative Models

• AT28C256: Similar capacity and functionality, but with a different pin configuration.
• AT49BV256: Flash memory alternative with higher endurance and faster erase times.
• 27C256: Older UV-erasable EPROM with similar capacity but requires separate erasing equipment.

These alternative models offer different features and may be suitable for specific application requirements.

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