AT28C64-12TC

Product Overview

Category

AT28C64-12TC belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used for non-volatile data storage in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

• Non-volatile: Retains stored data even when power is removed.
• Electrically erasable: Allows for easy modification of stored data.
• Programmable: Can be written and rewritten multiple times.
• High storage capacity: The AT28C64-12TC has a capacity of 64 kilobits (8 kilobytes).

Package

The AT28C64-12TC is available in a Thin Small Outline Package (TSOP), which provides a compact form factor suitable for space-constrained applications.

Essence

The essence of this product lies in its ability to store and retrieve digital information reliably, making it an essential component in many electronic systems.

Packaging/Quantity

The AT28C64-12TC is typically packaged in reels or tubes, with quantities varying depending on customer requirements.

Specifications

• Supply voltage: 2.7V to 5.5V
• Operating temperature range: -40°C to +85°C
• Access time: 120ns
• Organization: 8K x 8 bits
• Endurance: 10,000 write/erase cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28C64-12TC features a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A0-A12: Address inputs
2. CE: Chip enable
3. OE: Output enable
4. WE: Write enable
5. I/O0-I/O7: Data input/output
6. VCC: Power supply
7. GND: Ground

Functional Features

• Byte-wise programmable: Allows individual bytes to be programmed or erased without affecting others.
• Hardware and software data protection: Provides mechanisms to prevent accidental modification or erasure of stored data.
• Fast access time: Enables quick retrieval of information from memory.

Advantages and Disadvantages

Advantages

• Non-volatile storage: Ensures data integrity even during power loss.
• Easy reprogrammability: Facilitates updates and modifications to stored data.
• Compact form factor: Suitable for space-constrained applications.
• High endurance: Can withstand multiple write/erase cycles.

Disadvantages

• Limited storage capacity: May not be sufficient for applications requiring large amounts of data.
• Relatively slower access time compared to other memory technologies.
• Higher cost per bit compared to some alternative memory solutions.

Working Principles

The AT28C64-12TC utilizes a combination of electronic circuits and floating gate transistors to store and retrieve digital information. When data is written, an electric charge is trapped in the floating gate, altering the transistor's behavior. This charge can be removed during the erase process, allowing the transistor to return to its original state.

Detailed Application Field Plans

The AT28C64-12TC finds application in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Computer systems: Employed for BIOS storage and configuration data. 3. Consumer electronics: Utilized for storing user settings, calibration data, and firmware in devices like TVs, cameras, and audio players.

Detailed and Complete Alternative Models

1. AT28C256: Offers higher storage capacity (256 kilobits) while maintaining similar characteristics and pin compatibility.
2. AT29C010A: Provides a larger capacity (1 megabit) and faster access time, suitable for applications requiring higher performance.
3. AT24C64: A serial EEPROM with the same storage capacity, but different pin configuration and communication interface.

In conclusion, the AT28C64-12TC is an electrically erasable programmable read-only memory chip that offers non-volatile data storage, easy reprogrammability, and a compact form factor. While it has limitations in terms of storage capacity and access time, it serves as a reliable solution for various electronic systems, including embedded systems, computers, and consumer electronics.