AT28C17E-20PI

Product Overview

Category

AT28C17E-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 AT28C17E-20PI can be erased and reprogrammed electrically, making it convenient for updating stored data.
• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: This chip has a capacity of 17,280 bits or 2,160 bytes.
• Low power consumption: The AT28C17E-20PI operates at low power levels, making it suitable for battery-powered devices.

Package

The AT28C17E-20PI comes in a 24-pin DIP (Dual In-line Package) format.

Essence

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

Packaging/Quantity

The AT28C17E-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

• Operating voltage: 4.5V to 5.5V
• Access time: 200ns
• Standby current: 100μA
• Write current: 10mA
• Data retention: 10 years
• Endurance: 100,000 write cycles

Detailed Pin Configuration

The AT28C17E-20PI has a total of 24 pins, each serving a specific function. The pin configuration is as follows:

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. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. VCC - Power Supply
17. CE - Chip Enable
18. OE - Output Enable
19. WE - Write Enable
20. I/O0 - Data Input/Output
21. I/O1 - Data Input/Output
22. I/O2 - Data Input/Output
23. I/O3 - Data Input/Output
24. GND - Ground

Functional Features

• Random access: The AT28C17E-20PI allows for random access to any memory location, enabling efficient data retrieval.
• High-speed operation: With an access time of 200ns, this chip ensures fast read and write operations.
• Hardware and software compatibility: The AT28C17E-20PI is compatible with various microcontrollers and programming tools, making it versatile in different applications.

Advantages and Disadvantages

Advantages

• Electrically erasable and reprogrammable, allowing for easy updates and modifications.
• Non-volatile storage ensures data retention even during power loss.
• High capacity enables storing a significant amount of data.
• Low power consumption makes it suitable for battery-powered devices.

Disadvantages

• Limited endurance of 100,000 write cycles may be a constraint in certain high-write applications.
• Relatively slower access time compared to some other memory technologies.

Working Principles

The AT28C17E-20PI utilizes a combination of electronic circuits and memory cells to store and retrieve data. When the chip is powered on, the address lines are used to select a specific memory location. The data stored at that location can be read by enabling the output enable (OE) pin. To write new data, the chip must be enabled for writing by activating the write enable (WE) pin. The input/output pins (I/O0-I/O3) are used to transfer data between the chip and the external device.

Detailed Application Field Plans

The AT28C17E-20PI finds applications in various fields, including:

1. Microcontrollers: Used for storing firmware, configuration data, and calibration values.
2. Computers: Employed in BIOS chips and other non-volatile memory requirements.
3. Consumer electronics: Utilized in devices such as smart TVs, set-top boxes, and gaming consoles for data storage purposes.
4. Automotive industry: Integrated into electronic control units (ECUs) for storing critical data related to engine management, diagnostics, and vehicle settings.

Detailed and Complete Alternative Models

1. AT28C16