AT29C257-90JC-T

Product Overview

Category

AT29C257-90JC-T belongs to the category of non-volatile memory devices.

Use

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

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT29C257-90JC-T has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: It operates with a maximum access time of 90 nanoseconds.
• Low power consumption: The device is designed to minimize power usage during operation.
• Reliable: It offers high endurance and data retention capabilities.

Package

The AT29C257-90JC-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 electronic systems.

Packaging/Quantity

The AT29C257-90JC-T is typically packaged in reels or tubes, with a quantity of 100 units per package.

Specifications

• Memory Type: Electrically Erasable Programmable Read-Only Memory (EEPROM)
• Organization: 32 kilobytes x 8 bits
• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT29C257-90JC-T has a total of 32 pins, which are assigned specific functions. The pin configuration is as follows:

1. A16 - Address Input
2. A15 - Address Input
3. A12 - Address Input
4. A7 - Address Input
5. A6 - Address Input
6. A5 - Address Input
7. A4 - Address Input
8. A3 - Address Input
9. A2 - Address Input
10. A1 - Address Input
11. A0 - Address Input
12. VCC - Power Supply
13. OE - Output Enable
14. CE - Chip Enable
15. WE - Write Enable
16. I/O0 - Data Input/Output
17. I/O1 - Data Input/Output
18. I/O2 - Data Input/Output
19. I/O3 - Data Input/Output
20. I/O4 - Data Input/Output
21. I/O5 - Data Input/Output
22. I/O6 - Data Input/Output
23. I/O7 - Data Input/Output
24. NC - No Connection
25. GND - Ground
26. A14 - Address Input
27. A13 - Address Input
28. A8 - Address Input
29. A9 - Address Input
30. A11 - Address Input
31. A10 - Address Input
32. WP - Write Protect

Functional Features

• Byte-wise programmable: The AT29C257-90JC-T allows individual bytes to be programmed or erased.
• Block erase capability: It supports the erasure of entire memory blocks for efficient data management.
• Hardware and software write protection: The device can be protected from accidental writes using hardware or software methods.
• High-speed operation: With a maximum access time of 90 nanoseconds, it enables fast data retrieval.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity even during power loss.
• High capacity allows for storing substantial amounts of information.
• Fast access time enhances system performance.
• Low power consumption prolongs battery life in portable devices.
• Reliable endurance and data retention characteristics ensure long-term usability.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Higher cost per bit compared to some alternative memory solutions.
• Limited write endurance may be a concern for applications with frequent write operations.

Working Principles

The AT29C257-90JC-T utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It consists of a grid of memory cells that can be individually programmed or erased using electrical signals. The device operates by applying specific voltage levels to the address, control, and data pins, enabling read, write, or erase operations.

Detailed Application Field Plans

The AT29C257-90JC-T finds application in various electronic systems, including but not limited to: - Embedded systems - Automotive electronics - Industrial control systems - Consumer electronics - Communication devices

In these fields, it is commonly used for storing firmware, configuration data, calibration tables, and other critical information.

Detailed and Complete Alternative Models

1. AT28C256-15PU: 256 kilobit (32