AT28HC64B-12SA

Introduction

The AT28HC64B-12SA is a high-performance electrically erasable and programmable read-only memory (EEPROM) chip. This entry provides an overview of the product, including its category, use, characteristics, package, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

• Category: Electrically Erasable and Programmable Read-Only Memory (EEPROM)
• Use: Data storage in electronic devices, firmware storage, parameter storage
• Characteristics: High performance, non-volatile, electrically erasable, programmable
• Package: Surface mount, 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead TSSOP
• Essence: Non-volatile memory for data storage
• Packaging/Quantity: Tape and reel packaging, available in various quantities

Specifications

• Memory Size: 64 kilobits
• Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Access Time: 120ns
• Endurance: 100,000 write cycles
• Data Retention: 10 years

Detailed Pin Configuration

The AT28HC64B-12SA has 8 pins arranged as follows: 1. A0: Address Input 2. A1: Address Input 3. A2: Address Input 4. VCC: Power Supply 5. GND: Ground 6. OE: Output Enable 7. CE: Chip Enable 8. I/O0: Data Input/Output

Functional Features

• Electrically erasable and programmable
• High-speed access time
• Low power consumption
• Non-volatile storage
• Output enable and chip enable control

Advantages and Disadvantages

Advantages

• Fast access time
• Low power consumption
• Non-volatile storage
• Flexible input/output control

Disadvantages

• Limited endurance (100,000 write cycles)
• Relatively small memory size

Working Principles

The AT28HC64B-12SA utilizes a floating gate transistor structure to store data. When programming, a high voltage is applied to the gate, allowing electrons to tunnel onto the floating gate. Erasing is achieved by applying a high voltage to the entire chip, removing the charge from the floating gate.

Detailed Application Field Plans

The AT28HC64B-12SA is widely used in various electronic devices such as microcontrollers, embedded systems, industrial control systems, and automotive electronics. It serves as a reliable storage medium for firmware, configuration parameters, and critical data.

Detailed and Complete Alternative Models

• AT28C64B-15PU: 64-kilobit EEPROM with 150ns access time
• AT28HC256E-12PI: 256-kilobit EEPROM with 120ns access time
• AT28BV64B-20TU: 64-kilobit EEPROM with 200ns access time

In conclusion, the AT28HC64B-12SA is a versatile EEPROM chip with fast access time, low power consumption, and non-volatile storage capabilities. Its applications span across various electronic devices, making it an essential component in modern technology.

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