AT27C512R-15RA

Product Overview

Category

AT27C512R-15RA belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing fixed data or program code that cannot be altered once programmed. It finds applications in various electronic devices such as computers, microcontrollers, and consumer electronics.

Characteristics

• Non-volatile: The stored data remains intact even when power is turned off.
• High storage capacity: The AT27C512R-15RA has a capacity of 512 kilobits (64 kilobytes).
• Fast access time: The -15RA variant offers a fast access time of 150 nanoseconds.
• Low power consumption: This chip operates on low power, making it suitable for battery-powered devices.

Package

The AT27C512R-15RA is available in a 28-pin dual in-line package (DIP).

Essence

The essence of this product lies in its ability to provide non-volatile storage for fixed data or program code, ensuring reliable and secure operation of electronic devices.

Packaging/Quantity

The AT27C512R-15RA is typically packaged in tubes or trays, with quantities varying based on customer requirements.

Specifications

• Memory Capacity: 512 kilobits (64 kilobytes)
• Access Time: 150 nanoseconds
• Supply Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Package Type: 28-pin DIP

Detailed Pin Configuration

The AT27C512R-15RA features a 28-pin configuration with the following pin assignments:

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. /CE - Chip Enable
18. /WE - Write Enable
19. D0 - Data Input/Output
20. D1 - Data Input/Output
21. D2 - Data Input/Output
22. D3 - Data Input/Output
23. D4 - Data Input/Output
24. D5 - Data Input/Output
25. D6 - Data Input/Output
26. D7 - Data Input/Output
27. Vcc - Power Supply
28. GND - Ground

Functional Features

• Non-volatile storage: The AT27C512R-15RA retains data even when power is disconnected.
• Fast access time: With an access time of 150 nanoseconds, it provides quick retrieval of stored information.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration and compatibility.

Advantages and Disadvantages

Advantages

• Reliable and secure storage of fixed data or program code.
• Low power consumption, making it suitable for battery-powered devices.
• Fast access time ensures efficient operation.

Disadvantages

• Once programmed, the data cannot be altered or updated.
• Limited storage capacity compared to other memory technologies.

Working Principles

The AT27C512R-15RA operates based on the principle of electrical charge trapping in a floating gate structure. During programming, high voltage is applied to the control gates, causing electrons to tunnel through a thin oxide layer and become trapped in the floating gate. This trapped charge represents the stored data. During read operations, the presence or absence of charge in the floating gate is detected, allowing retrieval of the stored information.

Detailed Application Field Plans

The AT27C512R-15RA finds applications in various fields, including:

1. Computer systems: Used for storing BIOS (Basic Input/Output System) code.
2. Microcontrollers: Utilized for storing firmware or fixed data.
3. Consumer electronics: Employed in devices such as gaming consoles, set-top boxes, and audio players for storing program code or configuration data.

Detailed and Complete Alternative Models

1. AT28C256 - 256 kilobit (32 kilobyte) PROM chip with similar characteristics and pin configuration.
2. AT29C010A - 1 megabit (128 kilobyte) flash memory chip offering reprogrammability.
3. AM27C1024 - 1 megabit (128 kilobyte) EPROM chip with extended temperature range.

These alternative models provide different storage capacities and features,