AT28C256E-25DM/883-815

Product Overview

Category

AT28C256E-25DM/883-815 belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

This product is commonly used in electronic devices for storing and retrieving data. It provides non-volatile memory storage, allowing information to be retained even when power is removed.

Characteristics

• Electrically erasable: The AT28C256E-25DM/883-815 can be erased and reprogrammed electronically, making it convenient for updating or modifying stored data.
• High capacity: With a capacity of 256 kilobits (32 kilobytes), this EEPROM chip offers ample storage space for various applications.
• Fast access time: The chip operates at a speed of 250 nanoseconds, ensuring quick retrieval of stored data.
• Extended temperature range: Designed to withstand extreme temperatures, the AT28C256E-25DM/883-815 can operate reliably in harsh environments.
• Durable package: This chip is housed in a ceramic dual in-line package (DIP), providing physical protection and facilitating easy integration into circuit boards.

Packaging/Quantity

The AT28C256E-25DM/883-815 is typically packaged in tubes or trays, with each package containing a specified quantity of chips. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Access Time: 250 nanoseconds
• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -55°C to +125°C
• Package Type: Ceramic Dual In-Line Package (DIP)

Detailed Pin Configuration

The AT28C256E-25DM/883-815 has a total of 28 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. /OE - Output Enable
17. /WE - Write Enable
18. VCC - Supply Voltage
19. DQ0 - Data Input/Output
20. DQ1 - Data Input/Output
21. DQ2 - Data Input/Output
22. DQ3 - Data Input/Output
23. DQ4 - Data Input/Output
24. DQ5 - Data Input/Output
25. DQ6 - Data Input/Output
26. DQ7 - Data Input/Output
27. /CE - Chip Enable
28. VSS - Ground

Functional Features

• Non-volatile storage: The AT28C256E-25DM/883-815 retains data even when power is removed, ensuring information integrity.
• Easy reprogramming: The chip can be electronically erased and reprogrammed, allowing for flexible data updates or modifications.
• High-speed access: With an access time of 250 nanoseconds, the chip enables fast retrieval of stored data.
• Extended temperature range: The AT28C256E-25DM/883-815 operates reliably in extreme temperature conditions, making it suitable for various applications.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention.
• Easy to erase and reprogram electronically.
• Ample storage capacity for various applications.
• Fast access time for quick data retrieval.
• Reliable operation in extreme temperatures.

Disadvantages

• Limited storage capacity compared to other memory technologies.
• Higher cost per bit compared to some alternative memory options.
• Requires additional circuitry for interfacing with microcontrollers or other devices.

Working Principles

The AT28C256E-25DM/883-815 utilizes a floating-gate transistor structure to store data. When programming, an electrical charge is applied to the floating gate, trapping electrons and altering the transistor's behavior. Erasing the chip involves removing the trapped charge from the floating gate. The chip's control pins enable reading, writing, and erasing operations, allowing for flexible data manipulation.

Detailed Application Field Plans

The AT28C256E-25DM/883-815 finds application in various electronic devices and systems, including but not limited to: - Microcontrollers - Embedded systems - Industrial automation equipment - Automotive electronics -