AT28HC64B-70PC

Product Overview

Category

AT28HC64B-70PC 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 data retrieval even when power is turned off.

Characteristics

• High-speed operation
• Low power consumption
• Non-volatile memory
• Reliable data retention
• Easy to program and erase

Package

AT28HC64B-70PC comes 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 AT28HC64B-70PC lies in its ability to store and retrieve data reliably, even in the absence of power. It offers high-speed operation and low power consumption, making it suitable for various applications.

Packaging/Quantity

AT28HC64B-70PC 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 and customer requirements.

Specifications

• Operating Voltage: 2.7V - 5.5V
• Capacity: 64 kilobits (8 kilobytes)
• Access Time: 70 nanoseconds
• Interface: Parallel
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

1. Chip Enable (CE)
2. Output Enable (OE)
3. Write Enable (WE)
4. Address Inputs (A0-A12)
5. Data Inputs/Outputs (DQ0-DQ7)
6. Supply Voltage (VCC)
7. Ground (GND)

Note: The pin configuration may vary depending on the manufacturer. Please refer to the datasheet for the exact pinout.

Functional Features

• High-speed read and write operations
• Easy programming and erasing of data
• Low power consumption during standby mode
• Automatic page write and sector erase functions
• Hardware and software protection mechanisms

Advantages and Disadvantages

Advantages

• Fast access time allows for quick data retrieval
• Low power consumption prolongs battery life in portable devices
• Non-volatile memory ensures data retention even during power loss
• Easy to integrate into existing electronic circuits
• Reliable performance with high endurance and data retention capabilities

Disadvantages

• Limited storage capacity compared to other memory technologies
• Higher cost per bit compared to some alternative memory solutions
• Susceptible to electromagnetic interference (EMI) due to parallel interface

Working Principles

AT28HC64B-70PC utilizes EEPROM technology, which allows for electrically erasing and reprogramming of data. It stores information in a grid of memory cells, each containing a floating-gate transistor. By applying specific voltage levels to the control gates, data can be written or erased from these cells.

Detailed Application Field Plans

AT28HC64B-70PC finds applications in various fields, including: 1. Consumer electronics: Used in digital cameras, smartphones, and gaming consoles for data storage. 2. Automotive: Utilized in car audio systems, navigation devices, and engine control units for storing critical information. 3. Industrial automation: Employed in programmable logic controllers (PLCs), robotics, and monitoring systems for data logging and configuration storage. 4. Medical devices: Used in patient monitoring systems, medical imaging equipment, and diagnostic devices for storing patient data and device configurations.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: Similar to AT28HC64B-70PC, but with a slower access time of 150 nanoseconds.
2. AT28HC256-90PU: Offers higher storage capacity (256 kilobits) and faster access time (90 nanoseconds).
3. AT28C16-15PI: Lower capacity (16 kilobits) but with a faster access time of 15 nanoseconds.

Note: The availability of alternative models may vary depending on the manufacturer and market demand.

In conclusion, AT28HC64B-70PC is a high-speed, low-power EEPROM chip that provides reliable non-volatile data storage. Its characteristics, functional features, and application field plans make it suitable for various electronic devices. While it has advantages such as fast access time and low power consumption, it also has limitations in terms of storage capacity and cost per bit. Nonetheless, its working principles and availability of alternative models make it a versatile choice for many applications.