AT28HC256-12JC

Product Overview

Category

AT28HC256-12JC belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is primarily used for non-volatile data storage in various electronic devices such as microcontrollers, computers, and consumer electronics.

Characteristics

• High-speed operation
• Low power consumption
• Non-volatile memory
• Large storage capacity
• Reliable data retention
• Easy to interface with other electronic components

Package

AT28HC256-12JC is available in a 32-pin plastic J-lead chip carrier package.

Essence

The essence of AT28HC256-12JC lies in its ability to provide reliable and high-speed non-volatile memory storage for electronic devices.

Packaging/Quantity

AT28HC256-12JC is typically packaged in reels or tubes, with a quantity of 1000 units per reel/tube.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Access Time: 120ns
• Organization: 32K x 8 bits
• Endurance: 100,000 write cycles
• Data Retention: 10 years
• Interface: Parallel

Detailed Pin Configuration

1. A0
2. A1
3. A2
4. A3
5. A4
6. A5
7. A6
8. A7
9. VSS (Ground)
10. OE (Output Enable)
11. CE (Chip Enable)
12. WE (Write Enable)
13. I/O0
14. I/O1
15. I/O2
16. I/O3
17. I/O4
18. I/O5
19. I/O6
20. I/O7
21. VCC (Power)
22. NC (No Connection)
23. NC
24. NC
25. NC
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. NC

Functional Features

• High-speed operation allows for fast data access and retrieval.
• Low power consumption ensures efficient use of energy in electronic devices.
• Non-volatile memory retains data even when power is disconnected.
• Large storage capacity of 256 kilobits provides ample space for data storage.
• Easy interface with other electronic components simplifies integration into various systems.

Advantages and Disadvantages

Advantages

• Fast access time enhances overall system performance.
• Low power consumption prolongs battery life in portable devices.
• Non-volatile memory ensures data integrity during power interruptions.
• Large storage capacity accommodates extensive data requirements.
• Easy integration simplifies the design process.

Disadvantages

• Relatively higher cost compared to other memory technologies.
• Limited endurance may require careful management of write cycles.
• Parallel interface may be less suitable for certain applications requiring serial communication.

Working Principles

AT28HC256-12JC utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. The memory cells within the chip are organized in a grid-like structure, with each cell capable of storing one bit of information. When data needs to be written or read, specific control signals are applied to the chip's pins, enabling the necessary operations.

Detailed Application Field Plans

AT28HC256-12JC finds application in various fields, including: 1. Microcontrollers: Used for program storage and data logging. 2. Computers: Employed in BIOS chips and firmware storage. 3. Consumer Electronics: Utilized in devices such as digital cameras, set-top boxes, and gaming consoles for data storage.

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to AT28HC256-12JC, but with a slower access time of 150ns.
2. AT28HC256E-12PI: Enhanced version with extended temperature range and industrial-grade packaging.
3. AT28HC256-90PC: Lower power consumption variant with an access time of 90ns.

These alternative models provide options based on specific requirements such as speed, temperature range, and power consumption.

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