AT27C256R-45TI

Product Overview

Category

AT27C256R-45TI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is used for storing and retrieving data in electronic devices. It provides non-volatile memory storage, meaning that the stored data remains even when power is removed.

Characteristics

• Non-volatile: The stored data is retained even without power.
• Programmable: The memory can be programmed with specific data.
• Read-only: Once programmed, the data cannot be modified or erased.

Package

AT27C256R-45TI comes in a standard integrated circuit (IC) package. The package type is typically a dual in-line package (DIP), which consists of two parallel rows of pins.

Essence

The essence of AT27C256R-45TI lies in its ability to provide reliable and non-volatile memory storage for electronic devices.

Packaging/Quantity

AT27C256R-45TI is usually packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package varies but is commonly around 100 units.

Specifications

• Operating Voltage: 4.5V - 5.5V
• Memory Size: 256 kilobits (32 kilobytes)
• Access Time: 45 nanoseconds
• Organization: 32K x 8 bits
• Temperature Range: -40°C to +85°C
• Endurance: 10,000 write/erase cycles

Detailed 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. A7 - Address Input
9. VCC - Power Supply
10. A8 - Address Input
11. A9 - Address Input
12. A10 - Address Input
13. OE - Output Enable
14. CE - Chip Enable
15. I/O0 - Data Input/Output
16. I/O1 - Data Input/Output
17. I/O2 - Data Input/Output
18. I/O3 - Data Input/Output
19. I/O4 - Data Input/Output
20. I/O5 - Data Input/Output
21. I/O6 - Data Input/Output
22. I/O7 - Data Input/Output
23. GND - Ground

Functional Features

• High-speed access: The AT27C256R-45TI offers fast access times, allowing for efficient data retrieval.
• Low power consumption: This chip is designed to minimize power usage, making it suitable for battery-powered devices.
• Reliable storage: The non-volatile nature of the memory ensures that the stored data remains intact even during power loss or device shutdown.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention without power.
• Fast access times enable quick data retrieval.
• Low power consumption prolongs battery life.
• Reliable storage protects against data loss.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited storage capacity compared to other memory technologies.

Working Principles

AT27C256R-45TI utilizes a technology called electrically erasable programmable read-only memory (EEPROM). It stores data by trapping electric charges in specific memory cells. When reading data, the stored charges are detected and converted into digital information.

Detailed Application Field Plans

AT27C256R-45TI finds applications in various electronic devices, including but not limited to: - Microcontrollers - Embedded systems - Industrial control systems - Automotive electronics - Consumer electronics

Detailed and Complete Alternative Models

1. AT28C256-15PU: Similar to AT27C256R-45TI, but with a slower access time of 150 nanoseconds.
2. AT29C256-12PC: Offers faster access time of 12 nanoseconds compared to AT27C256R-45TI.
3. AM27C256-120DC: A compatible alternative with a wider temperature range (-55°C to +125°C).

These alternative models provide similar functionality and can be used as substitutes for AT27C256R-45TI depending on specific requirements.

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