AT28HC256E-90PU

Product Overview

Category

AT28HC256E-90PU belongs to the category of high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) chips.

Use

This product is commonly used in 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 operation
• Low power consumption
• Non-volatile memory
• Reliable data retention
• Easy to interface with microcontrollers

Package

AT28HC256E-90PU is available in a standard 28-pin plastic dual in-line package (PDIP). This package provides mechanical protection and facilitates easy integration into electronic circuits.

Essence

The essence of AT28HC256E-90PU lies in its ability to store and retrieve data reliably, making it an essential component in various electronic systems.

Packaging/Quantity

AT28HC256E-90PU is typically packaged in reels or tubes, containing a specific quantity of chips per package. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Operating Voltage: 2.7V to 5.5V
• Access Time: 90ns
• Memory Size: 256 kilobits (32 kilobytes)
• Organization: 32K x 8 bits
• Interface: Parallel
• Write Endurance: 100,000 cycles
• Data Retention: 10 years

Detailed Pin Configuration

The AT28HC256E-90PU chip has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

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. VSS - Ground
10. A8 - Address Input
11. A9 - Address Input
12. A10 - Address Input
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. VCC - Power Supply
25. NC - No Connection
26. NC - No Connection
27. NC - No Connection
28. NC - No Connection

Functional Features

• High-speed operation allows for quick data access.
• Low power consumption makes it suitable for battery-powered devices.
• Non-volatile memory ensures data retention even without power.
• Easy interfacing with microcontrollers simplifies integration into electronic systems.

Advantages and Disadvantages

Advantages

• Fast access time enables efficient data retrieval.
• Low power consumption prolongs battery life in portable devices.
• Reliable data retention ensures long-term storage of critical information.
• Easy integration with microcontrollers simplifies system design.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Higher cost per bit compared to some alternative memory solutions.
• Susceptible to electromagnetic interference, requiring proper shielding in sensitive applications.

Working Principles

AT28HC256E-90PU utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. The memory cells within the chip store information in a non-volatile manner, retaining the data even when power is removed. The chip can be accessed and controlled through the provided address, control, and data lines.

Detailed Application Field Plans

AT28HC256E-90PU finds applications in various electronic systems, including but not limited to: - Embedded systems - Automotive electronics - Industrial control systems - Consumer electronics - Medical devices

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to AT28HC256E-90PU include: - AT28C256 - Lower-speed version of the same EEPROM chip. - AT29C256 - Flash memory chip with similar capacity and characteristics. - 24LC256 - I2C-compatible EEPROM chip with comparable specifications.

These alternative models provide options for different speed requirements, interface compatibility, and cost considerations.

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