AT28C256E-15SC

Product Overview

Category

AT28C256E-15SC belongs to the category of electrically erasable programmable read-only memory (EEPROM) chips.

Use

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

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• Electrically erasable: The memory can be erased and reprogrammed electronically.
• High capacity: The AT28C256E-15SC has a storage capacity of 256 kilobits (32 kilobytes).
• Low power consumption: The chip operates at low power levels, making it suitable for battery-powered devices.

Package

The AT28C256E-15SC is available in a small outline integrated circuit (SOIC) package. This package provides a compact form factor and ease of integration into electronic circuits.

Essence

The essence of the AT28C256E-15SC is its ability to store and retrieve digital data reliably and efficiently. It offers a high level of flexibility and durability, making it an essential component in many electronic systems.

Packaging/Quantity

The AT28C256E-15SC is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer and customer requirements.

Specifications

• Memory Capacity: 256 kilobits (32 kilobytes)
• Operating Voltage: 2.7V - 5.5V
• Access Time: 150 nanoseconds
• Erase/Write Cycles: 10,000 minimum
• Data Retention: 10 years minimum
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AT28C256E-15SC 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. /CE - Chip Enable
19. VCC - Power Supply
20. GND - Ground
21. DQ0 - Data Input/Output
22. DQ1 - Data Input/Output
23. DQ2 - Data Input/Output
24. DQ3 - Data Input/Output
25. DQ4 - Data Input/Output
26. DQ5 - Data Input/Output
27. DQ6 - Data Input/Output
28. DQ7 - Data Input/Output

Functional Features

The AT28C256E-15SC offers the following functional features:

• Byte-wise Read and Write Operations: Allows individual bytes to be read from or written to the memory.
• Electronic Erase: The entire memory or selected sectors can be erased electronically, enabling efficient data management.
• Hardware and Software Protection: Provides options for protecting critical data from accidental modification or unauthorized access.
• High-Speed Operation: The chip operates at a fast access time of 150 nanoseconds, ensuring quick data retrieval and storage.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Electrically erasable and reprogrammable, allowing for easy updates and modifications.
• High storage capacity for a wide range of applications.
• Low power consumption, suitable for battery-powered devices.
• Compact form factor for easy integration into electronic circuits.

Disadvantages

• Limited erase/write cycles compared to other memory technologies.
• Relatively higher cost per bit compared to some alternative memory solutions.
• Sensitive to electrical noise and voltage fluctuations, requiring proper circuit design and protection measures.

Working Principles

The AT28C256E-15SC utilizes a combination of floating-gate transistors and control circuitry to store and retrieve digital data. When writing data, the control circuitry applies appropriate voltages to the memory cells, causing charge to be trapped in the floating gates. This charge represents the stored data. During read operations, the control circuitry senses the charge on the floating gates and converts it into digital output.

Detailed Application Field Plans

The AT28C256E-15