AT28HC256-90JC

Product Overview

Category

The AT28HC256-90JC belongs to the category of high-speed, high-capacity EEPROM (Electrically Erasable Programmable Read-Only Memory) chips.

Use

This product is commonly used in various electronic devices for non-volatile data storage. It allows for easy and efficient retrieval of stored information even when power is turned off.

Characteristics

• High speed: The AT28HC256-90JC operates at a fast speed, enabling quick read and write operations.
• High capacity: With a storage capacity of 256 kilobits, this chip can store a large amount of data.
• Non-volatile memory: The stored data remains intact even when power is lost or turned off.
• Reliable: The AT28HC256-90JC offers excellent data retention and endurance characteristics, ensuring long-term reliability.
• Low power consumption: This chip is designed to consume minimal power during operation, making it suitable for battery-powered devices.

Package

The AT28HC256-90JC is available in a standard 32-pin PLCC (Plastic Leaded Chip Carrier) package. This package provides mechanical protection and facilitates easy integration into circuit boards.

Essence

The essence of the AT28HC256-90JC lies in its ability to provide high-speed, high-capacity non-volatile memory storage for electronic devices.

Packaging/Quantity

This product is typically packaged in reels or tubes, with each containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer's specifications.

Specifications

• Manufacturer: Atmel Corporation
• Part Number: AT28HC256-90JC
• Memory Type: EEPROM
• Capacity: 256 kilobits
• Operating Voltage: 2.7V - 5.5V
• Access Time: 90 nanoseconds
• Interface: Parallel
• Package Type: PLCC-32

Detailed Pin Configuration

The AT28HC256-90JC features a 32-pin PLCC package with the following pin configuration:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. /OE - Output Enable
18. /WE - Write Enable
19. /CE - Chip Enable
20. Vcc - Power Supply
21. DQ0 - Data Input/Output
22. DQ1 - Data Input/Output
23. DQ2 - Data Input/Output
24. DQ3 - Data Input/Output
25. DQ4 - Data Input/Output
26. DQ5 - Data Input/Output
27. DQ6 - Data Input/Output
28. DQ7 - Data Input/Output
29. /BYTE - Byte/Word Organization Select
30. Vss - Ground
31. NC - No Connection
32. NC - No Connection

Functional Features

The AT28HC256-90JC offers the following functional features:

• High-speed read and write operations: The chip allows for fast data retrieval and storage.
• Non-volatile memory: The stored data remains intact even without power.
• Easy integration: The parallel interface simplifies the integration of the chip into various electronic systems.
• Low power consumption: The chip is designed to minimize power usage, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• High-speed operation enables quick data access.
• Large storage capacity accommodates a significant amount of data.
• Non-volatile memory ensures data retention even during power loss.
• Reliable performance with excellent endurance characteristics.
• Low power consumption extends battery life in portable devices.

Disadvantages

• Limited compatibility with certain microcontrollers or systems due to the parallel interface.
• Relatively higher cost compared to other non-volatile memory options.

Working Principles

The AT28HC256-90JC utilizes EEPROM technology to store and retrieve data. It consists of an array of memory cells that can be electrically programmed and erased. When data needs to be stored, the chip applies voltage to specific memory cells, altering their electrical state. To read the stored data, the chip detects the electrical state of each memory cell. This process allows for non-volatile data storage and retrieval.

Detailed Application Field Plans

The AT28HC256-90