AT28HC256-70SI

Product Overview

Category

AT28HC256-70SI 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 components

Package

AT28HC256-70SI comes in a Small-Outline Integrated Circuit (SOIC) package. This package provides a compact form factor and allows for easy integration into electronic circuits.

Essence

The essence of AT28HC256-70SI lies in its ability to store and retrieve data reliably, while offering high-speed operation and low power consumption.

Packaging/Quantity

AT28HC256-70SI 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 and supplier.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Capacity: 256 kilobits (32 kilobytes)
• Access Time: 70 nanoseconds
• Interface: Serial Peripheral Interface (SPI)
• Data Retention: Up to 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28HC256-70SI chip has a total of 28 pins. The pin configuration is as follows:

1. Chip Enable (CE)
2. Output Enable (OE)
3. Write Enable (WE)
4. Address Inputs (A0-A14)
5. Data Inputs/Outputs (DQ0-DQ7)
6. Supply Voltage (VCC)
7. Ground (GND)

Functional Features

• High-speed data transfer
• Byte-wise and page-wise write operations
• Sector erase capability
• Software and hardware protection mechanisms
• Automatic sleep mode for power saving
• Built-in error detection and correction algorithms

Advantages and Disadvantages

Advantages

• Fast access time allows for quick data retrieval.
• Low power consumption helps to extend battery life in portable devices.
• Large storage capacity accommodates a wide range of applications.
• Reliable data retention ensures long-term data integrity.
• Easy integration with other components simplifies circuit design.

Disadvantages

• Limited endurance compared to other non-volatile memory technologies.
• Higher cost per bit compared to some alternative memory solutions.
• Requires an external power supply for operation.

Working Principles

AT28HC256-70SI utilizes EEPROM technology, which allows for electrically erasing and reprogramming the memory cells. The chip stores data in a grid of memory cells, organized into rows and columns. Each cell can be individually addressed and modified using appropriate control signals. The data is retained even when the power supply is disconnected.

Detailed Application Field Plans

AT28HC256-70SI finds applications in various fields, including: 1. Embedded systems 2. Automotive electronics 3. Industrial automation 4. Medical devices 5. Communication equipment

In embedded systems, it can be used for firmware storage, configuration data, and parameter settings. In automotive electronics, it can store critical information such as calibration data and fault codes. Industrial automation systems can utilize it for program storage and data logging. Medical devices can benefit from its non-volatile storage capabilities for patient data and device settings. Communication equipment can use it for storing network configurations and firmware updates.

Detailed and Complete Alternative Models

Some alternative models to AT28HC256-70SI include: 1. AT28C256-15PU 2. AT29C256-12PC 3. 25LC256-I/SN 4. M95640-WMN6TP

These models offer similar functionality and specifications, providing options for different design requirements and availability from various manufacturers.

In conclusion, AT28HC256-70SI is a high-speed, low-power EEPROM chip that offers reliable non-volatile data storage. Its characteristics, specifications, pin configuration, functional features, advantages, and disadvantages make it suitable for a wide range of applications in various industries.