AT27C512R-90PI

Product Overview

Category

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

Use

This product is primarily 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: Retains data even without power supply.
• Programmable: Allows users to write data into the memory.
• Read-only: Data can be read from the memory but cannot be modified.
• High capacity: The AT27C512R-90PI has a capacity of 512 kilobits (64 kilobytes).

Package

The AT27C512R-90PI comes in a standard dual in-line package (DIP), which consists of two parallel rows of pins. This package type is widely used and allows for easy integration into various electronic systems.

Essence

The essence of the AT27C512R-90PI lies in its ability to provide reliable and non-volatile memory storage for electronic devices. It ensures that critical data remains intact, even during power outages or system failures.

Packaging/Quantity

The AT27C512R-90PI is typically packaged in tubes or trays, with each package containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer and customer requirements.

Specifications

• Operating Voltage: 4.5V to 5.5V
• Access Time: 90 nanoseconds
• Organization: 64K x 8 bits
• Erase/Write Cycle Endurance: 10,000 cycles
• Data Retention: 20 years
• Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AT27C512R-90PI has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A14
2. A12
3. A7
4. A6
5. A5
6. A4
7. A3
8. A2
9. A1
10. A0
11. /OE (Output Enable)
12. /WE (Write Enable)
13. VPP (Programming Voltage)
14. NC (No Connection)
15. Q7
16. Q6
17. Q5
18. Q4
19. Q3
20. Q2
21. Q1
22. Q0
23. VCC (Power Supply)
24. GND (Ground)
25. A8
26. A9
27. A11
28. A13

Functional Features

• High-speed access: The AT27C512R-90PI offers fast access times, allowing for efficient data retrieval.
• Low power consumption: It operates within a low voltage range and consumes minimal power during operation.
• Easy integration: The standard DIP package makes it compatible with various electronic systems and facilitates easy integration.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even without power supply.
• High capacity allows for storing a significant amount of data.
• Fast access times enable quick retrieval of information.
• Easy integration into existing electronic systems.

Disadvantages

• Data cannot be modified once programmed.
• Limited erase/write cycle endurance compared to some other memory technologies.
• Requires external programming voltage (VPP) for write operations.

Working Principles

The AT27C512R-90PI utilizes a technology called electrically erasable programmable read-only memory (EEPROM). It stores data using floating-gate transistors that can be electrically programmed and erased. During programming, a high voltage is applied to the memory cells, causing charge to be trapped in the floating gate. This trapped charge represents the stored data. The data can be read by applying appropriate voltages to the memory cells.

Detailed Application Field Plans

The AT27C512R-90PI finds applications in various electronic devices that require non-volatile memory storage. Some common application fields include:

1. Embedded systems: Used for firmware storage in microcontrollers and other embedded systems.
2. Industrial automation: Stores configuration data and program code in industrial control systems.
3. Automotive electronics: Provides reliable storage for critical data in automotive applications such as engine management systems and infotainment systems.
4. Consumer electronics: Used in devices like gaming consoles, set-top boxes, and digital cameras for storing firmware and user data.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: 64 kilobit (8 kilobyte) EEPROM with faster access time.
2. AT29C010A-12PC: 1 megabit (128 kilobyte) flash memory with higher