AT28C16-20JC

Product Overview

Category

AT28C16-20JC belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Electrically erasable: The AT28C16-20JC can be erased and reprogrammed electronically, making it convenient for updating data.
• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: This chip has a capacity of 16 kilobits (2 kilobytes), allowing for significant data storage.
• Low power consumption: The AT28C16-20JC operates on low power, making it suitable for battery-powered devices.

Package

The AT28C16-20JC is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

This EEPROM chip provides reliable and flexible non-volatile memory storage for electronic devices.

Packaging/Quantity

The AT28C16-20JC is typically packaged in reels or tubes, with quantities varying based on customer requirements.

Specifications

• Supply voltage: 4.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Access time: 200 nanoseconds
• Endurance: 1,000,000 write cycles
• Data retention: 10 years

Detailed Pin Configuration

The AT28C16-20JC has a total of 32 pins, each serving a specific function. Here is a detailed pin configuration:

1. A0-A10: Address inputs
2. CE: Chip enable input
3. OE: Output enable input
4. WE: Write enable input
5. VCC: Power supply
6. GND: Ground 7-22: Data input/output (DQ0-DQ15)
7. NC: No connection 24-31: Address inputs (A11-A18)
8. WP: Write protect input

Functional Features

• Byte-wise programmable: The AT28C16-20JC allows individual bytes to be programmed or erased, providing flexibility in data manipulation.
• High-speed operation: With an access time of 200 nanoseconds, this chip enables fast read and write operations.
• Automatic erase-before-write: The chip automatically erases the targeted memory location before writing new data, ensuring data integrity.

Advantages and Disadvantages

Advantages

• Electrically erasable and reprogrammable
• Non-volatile storage
• High capacity for data storage
• Low power consumption
• Flexible byte-wise programming

Disadvantages

• Relatively slower access time compared to some other memory technologies
• Limited endurance of 1,000,000 write cycles

Working Principles

The AT28C16-20JC utilizes a combination of electronic circuits and floating-gate transistors to store and retrieve data. When data is written, the charge is trapped in the floating gate, altering the transistor's behavior. This alteration allows the stored data to be retained even when power is removed. During read operations, the stored charge is sensed, enabling data retrieval.

Detailed Application Field Plans

The AT28C16-20JC finds applications in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration data, and calibration values.
2. Computers: Employed in BIOS chips, expansion cards, and embedded systems.
3. Consumer electronics: Utilized in devices like digital cameras, set-top boxes, and smart appliances for non-volatile data storage.

Detailed and Complete Alternative Models

1. AT28C16-15PC: Similar to AT28C16-20JC but with a slower access time of 150 nanoseconds.
2. AT28C16-25PI: Offers a faster access time of 250 nanoseconds compared to AT28C16-20JC.
3. AT28C16-30DM/883: A military-grade version designed for harsh environments, offering extended temperature range and enhanced reliability.

These alternative models provide options with varying specifications to suit different application requirements.

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