AT27C512R-55PI

Product Overview

Category

AT27C512R-55PI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing permanent data or code that needs to be retained even when power is turned off. It is widely utilized in various electronic devices, such as microcontrollers, computers, and consumer electronics.

Characteristics

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

Package

AT27C512R-55PI is available in a 28-pin dual in-line package (DIP), which is a common packaging format for integrated circuits.

Essence

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

Packaging/Quantity

AT27C512R-55PI is typically packaged in tubes or trays, with each tube or tray containing a specified quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Memory Capacity: 512 kilobits (64 kilobytes)
• Operating Voltage: 5 volts
• Access Time: 55 nanoseconds
• Organization: 64K x 8 bits
• Erase/Write Cycle Endurance: 10,000 cycles
• Data Retention: 20 years

Detailed Pin Configuration

1. A14 - Address Input
2. A12 - Address Input
3. A7 - Address Input
4. A6 - Address Input
5. A5 - Address Input
6. A4 - Address Input
7. A3 - Address Input
8. A2 - Address Input
9. A1 - Address Input
10. A0 - Address Input
11. /OE - Output Enable
12. /CE - Chip Enable
13. VCC - Power Supply
14. DQ0 - Data Input/Output
15. DQ1 - Data Input/Output
16. DQ2 - Data Input/Output
17. DQ3 - Data Input/Output
18. DQ4 - Data Input/Output
19. DQ5 - Data Input/Output
20. DQ6 - Data Input/Output
21. DQ7 - Data Input/Output
22. /WE - Write Enable
23. /PGM - Program Mode
24. NC - No Connection
25. /BYTE - Byte Mode Select
26. VSS - Ground
27. A8 - Address Input
28. A9 - Address Input

Functional Features

• High-speed access: The 55 nanosecond access time allows for quick retrieval of data.
• Low power consumption: The chip operates at a low voltage and consumes minimal power.
• Easy integration: The standard pin configuration facilitates seamless integration into various electronic systems.
• Reliable data retention: The stored data remains intact for up to 20 years, ensuring long-term reliability.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data persistence even during power loss.
• High-speed access enables efficient data retrieval.
• Easy integration due to standard pin configuration.
• Long data retention period ensures reliability.

Disadvantages

• Once programmed, the data cannot be modified or erased, limiting flexibility.
• Limited storage capacity compared to other memory technologies.
• Higher cost per bit compared to some alternative memory solutions.

Working Principles

AT27C512R-55PI utilizes a floating-gate transistor technology to store data. During programming, a high voltage is applied to the selected memory cells, causing electrons to be trapped in the floating gate. This alters the threshold voltage of the transistor, effectively storing the desired data. During read operations, the stored data is retrieved by sensing the transistor's threshold voltage.

Detailed Application Field Plans

AT27C512R-55PI finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Computer systems: Employed for storing BIOS (Basic Input/Output System) code in computer motherboards. 3. Consumer electronics: Utilized in devices like gaming consoles, set-top boxes, and digital cameras for storing firmware or configuration data.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: 64 kilobit parallel EEPROM with faster access time.
2. AT29C010A-12PC: 1 megabit parallel flash memory with higher storage capacity.
3. AT25SF041-SSHD-T: 4 megabit serial flash memory with smaller form factor.

These alternative models offer different features and specifications, providing options based on specific