AT27C512R-90TC

Product Overview

Category

AT27C512R-90TC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing permanent data or program code that cannot be modified once programmed.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High density: The chip has a capacity of 512 kilobits, allowing for large amounts of data storage.
• Fast access time: The access time of 90 nanoseconds ensures quick retrieval of data.
• Low power consumption: The chip operates on low power, making it suitable for battery-powered devices.

Package

AT27C512R-90TC is available in a standard 32-pin dual in-line package (DIP).

Essence

The essence of this product lies in its ability to provide non-volatile storage for critical data or program code in electronic systems.

Packaging/Quantity

AT27C512R-90TC is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's packaging specifications.

Specifications

• Capacity: 512 kilobits (64 kilobytes)
• Access Time: 90 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 20 years

Detailed Pin Configuration

1. A14
2. A12
3. A7
4. A6
5. A5
6. A4
7. A3
8. A2
9. A1
10. A0
11. /OE
12. /WE
13. VSS
14. NC
15. Q7
16. Q6
17. Q5
18. Q4
19. Q3
20. Q2
21. Q1
22. Q0
23. VCC
24. A8
25. A9
26. A11
27. A10
28. /CE
29. /PGM
30. /BYTE
31. /VPP
32. NC

Functional Features

• Easy programming: The chip can be programmed using standard PROM programming equipment.
• High reliability: The stored data is resistant to accidental erasure or modification.
• Efficient storage: The high-density capacity allows for the storage of large amounts of data in a compact form factor.
• Compatibility: The chip is compatible with a wide range of microcontrollers and other digital systems.

Advantages and Disadvantages

Advantages

• Non-volatile storage ensures data integrity even during power loss.
• Fast access time enables quick retrieval of stored information.
• Low power consumption makes it suitable for battery-powered devices.
• High-density capacity provides ample storage space.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited endurance: The chip has a finite number of program/erase cycles before it becomes unreliable.

Working Principles

AT27C512R-90TC utilizes a technology called electrically programmable read-only memory (EPROM). It consists of a grid of memory cells that can be individually programmed or erased by applying specific electrical voltages. Once programmed, the stored data remains intact until a higher voltage is applied for erasure.

Detailed Application Field Plans

AT27C512R-90TC finds applications in various fields, including: 1. Embedded systems: Used for storing firmware or boot code in microcontroller-based systems. 2. Automotive electronics: Stores critical data such as calibration tables or configuration settings. 3. Industrial control systems: Provides non-volatile storage for program code or configuration data. 4. Consumer electronics: Used in devices like gaming consoles, set-top boxes, or digital cameras for storing firmware or data.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: 64 kilobit (8 kilobyte) EEPROM chip with a 150 nanosecond access time.
2. AM29F040B-90JC: 4 megabit (512 kilobyte) flash memory chip with a 90 nanosecond access time.
3. M27C256B-12F1: 256 kilobit (32 kilobyte) EPROM chip with a 120 nanosecond access time.

These alternative models offer similar functionality to AT27C512R-90TC and can be considered as replacements based on specific requirements.

In conclusion, AT27C512R-90TC is a programmable read-only memory chip that provides non-volatile storage for critical data or program code. With its high density, fast access time, and low power consumption, it finds applications in various fields. However, its limitations