AT28C17-20PI

Product Overview

Category

AT28C17-20PI belongs to the category of 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

• Electrically erasable: The AT28C17-20PI can be erased and reprogrammed electrically, eliminating the need for UV light exposure.
• Non-volatile: The stored data is retained even when power is removed.
• High storage capacity: This chip has a storage capacity of 16 kilobits (2 kilobytes).
• Low power consumption: The AT28C17-20PI operates on low power, making it suitable for battery-powered devices.

Package

The AT28C17-20PI is available in a 24-pin DIP (Dual Inline Package) format.

Essence

The essence of this product lies in its ability to store and retrieve digital information reliably and efficiently.

Packaging/Quantity

The AT28C17-20PI is typically packaged in tubes or trays, with each package containing a specified quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 16 kilobits (2 kilobytes)
• Operating Voltage: 5V
• Access Time: 200 nanoseconds
• Erase/Write Cycles: 10,000 cycles
• Data Retention: Up to 10 years

Detailed Pin Configuration

The AT28C17-20PI features a 24-pin DIP package with the following pin configuration:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. VCC - Power Supply
9. CE - Chip Enable
10. OE - Output Enable
11. WE - Write Enable
12. I/O0 - Data Input/Output
13. I/O1 - Data Input/Output
14. I/O2 - Data Input/Output
15. I/O3 - Data Input/Output
16. I/O4 - Data Input/Output
17. I/O5 - Data Input/Output
18. I/O6 - Data Input/Output
19. I/O7 - Data Input/Output
20. NC - No Connection
21. GND - Ground
22. NC - No Connection
23. NC - No Connection
24. NC - No Connection

Functional Features

• Byte-wise Read/Write: The AT28C17-20PI allows individual bytes to be read from or written to the memory.
• Hardware and Software Protection: This chip provides protection mechanisms to prevent accidental erasure or modification of stored data.
• Fast Access Time: With an access time of 200 nanoseconds, this EEPROM chip enables quick retrieval of data.

Advantages and Disadvantages

Advantages

• Electrically erasable and reprogrammable, eliminating the need for UV light exposure.
• Non-volatile storage ensures data retention even during power loss.
• High storage capacity suitable for various applications.
• Low power consumption makes it ideal for battery-powered devices.

Disadvantages

• Limited erase/write cycles (10,000 cycles) compared to other non-volatile memory technologies.
• Relatively slower access time compared to some contemporary memory chips.

Working Principles

The AT28C17-20PI utilizes a floating-gate transistor structure to store digital information. When data is written, a high voltage is applied to the control gate, allowing electrons to tunnel through the insulating layer and become trapped in the floating gate. This trapped charge alters the transistor's threshold voltage, representing either a logical "0" or "1". During read operations, the stored charge is sensed, and the corresponding data is retrieved.

Detailed Application Field Plans

The AT28C17-20PI finds applications in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration data, and calibration parameters.
2. Computers: Employed in BIOS (Basic Input/Output System) chips for storing system initialization code.
3. Consumer Electronics: Utilized in devices such as smart TVs, set-top boxes, and gaming consoles for storing user preferences and settings.

Detailed and Complete Alternative Models

1. AT28C16 - Similar to AT28C17-20PI but with a smaller storage capacity of 8 kilobits.
2. AT28C64B - Offers a higher storage capacity of 64 kilobits.
3. AT28C256 - Provides an even larger storage capacity of 256 kilob