AT28C256-20LM/883-815

Product Overview

Category

AT28C256-20LM/883-815 belongs to the category of non-volatile memory devices.

Use

This product is primarily used for storing and retrieving digital information in electronic systems.

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High capacity: The AT28C256-20LM/883-815 has a storage capacity of 256 kilobits (32 kilobytes).
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• Fast access time: With a maximum access time of 200 nanoseconds, it provides quick data retrieval.

Package

The AT28C256-20LM/883-815 comes in a 28-pin ceramic 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 AT28C256-20LM/883-815 is typically packaged in tubes or trays, with a quantity of 25 units per tube/tray.

Specifications

• Operating voltage: 5V
• Access time: 200 ns
• Organization: 32K x 8 bits
• Endurance: 10,000 write cycles
• Data retention: 10 years
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

1. A0: Address input bit 0
2. A1: Address input bit 1
3. A2: Address input bit 2
4. A3: Address input bit 3
5. A4: Address input bit 4
6. A5: Address input bit 5
7. A6: Address input bit 6
8. A7: Address input bit 7
9. A8: Address input bit 8
10. A9: Address input bit 9
11. A10: Address input bit 10
12. A11: Address input bit 11
13. A12: Address input bit 12
14. A13: Address input bit 13
15. A14: Address input bit 14
16. A15: Address input bit 15
17. /OE: Output Enable
18. /CE: Chip Enable
19. /WE: Write Enable
20. D0: Data input/output bit 0
21. D1: Data input/output bit 1
22. D2: Data input/output bit 2
23. D3: Data input/output bit 3
24. D4: Data input/output bit 4
25. D5: Data input/output bit 5
26. D6: Data input/output bit 6
27. D7: Data input/output bit 7
28. Vcc: Power supply

Functional Features

• Byte-wide access: The AT28C256-20LM/883-815 allows for byte-level read and write operations.
• Hardware and software data protection: It provides mechanisms to protect stored data from accidental modification.
• High-speed operation: With a maximum access time of 200 ns, it enables fast data retrieval.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• High storage capacity for various applications.
• Low power consumption makes it suitable for battery-powered devices.
• Fast access time allows for quick data retrieval.

Disadvantages

• Limited endurance with a maximum of 10,000 write cycles.
• Relatively higher cost compared to other memory technologies.

Working Principles

The AT28C256-20LM/883-815 is based on Electrically Erasable Programmable Read-Only Memory (EEPROM) technology. It utilizes a grid of floating-gate transistors to store and retrieve digital information. The stored data can be read, written, or erased electronically using specific control signals.

Detailed Application Field Plans

The AT28C256-20LM/883-815 finds applications in various electronic systems, including but not limited to: - Microcontrollers - Embedded systems - Industrial automation - Automotive electronics - Communication devices

Detailed and Complete Alternative Models

1. AT28C256-15LM/883-815: Similar to the AT28C256-20LM/883-815, but with a lower access time of 150 ns.
2. AT28C256-25LM/883-815: Similar to the AT28C256-20LM/883-815, but with a higher access time of 250 ns.
3. AT28C512-20LM/883-815: Double the storage capacity of the AT28