AT27C800-12PC

Product Overview

Category

AT27C800-12PC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used in electronic devices for storing permanent data that cannot be modified or erased. It provides non-volatile memory storage, making it ideal for applications where data integrity is crucial.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High capacity: The AT27C800-12PC has a capacity of 8 megabits (1 megabyte).
• Fast access time: The access time is 120 nanoseconds, allowing for quick retrieval of data.
• Low power consumption: The chip operates at low power levels, making it suitable for battery-powered devices.

Package

The AT27C800-12PC is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of this product lies in its ability to provide reliable and secure storage of data that cannot be altered or erased.

Packaging/Quantity

The AT27C800-12PC 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

• Memory capacity: 8 megabits (1 megabyte)
• Access time: 120 nanoseconds
• Operating voltage: 5 volts
• Operating temperature range: -40°C to +85°C
• Data retention: More than 20 years

Detailed Pin Configuration

The AT27C800-12PC has a total of 32 pins, which are assigned specific functions as follows:

1. A0-A18: Address inputs
2. CE: Chip enable
3. OE: Output enable
4. WE: Write enable
5. VCC: Power supply
6. GND: Ground
7. DQ0-DQ15: Data inputs/outputs

Functional Features

• Easy integration: The AT27C800-12PC can be easily integrated into existing electronic systems due to its standard pin configuration.
• High-speed operation: With a fast access time of 120 nanoseconds, this chip allows for efficient data retrieval.
• Reliable data storage: The non-volatile nature of the PROM ensures that stored data remains intact even in the absence of power.
• Low power consumption: The chip operates at low power levels, making it suitable for energy-efficient applications.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High capacity allows for storing large amounts of data.
• Fast access time enables quick retrieval of information.
• Low power consumption makes it suitable for battery-powered devices.

Disadvantages

• Data cannot be modified or erased once programmed.
• Limited write cycles compared to other types of memory.
• Relatively higher cost compared to some alternative memory technologies.

Working Principles

The AT27C800-12PC is based on the principle of electrically programmable read-only memory (EPROM). It uses a grid of transistors to store data as binary code. Once programmed, the data remains fixed and can only be read. The chip utilizes various control signals, such as chip enable (CE), output enable (OE), and write enable (WE), to manage the reading and writing operations.

Detailed Application Field Plans

The AT27C800-12PC finds application in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Employed in automotive control units for storing critical data. 3. Industrial automation: Utilized in programmable logic controllers (PLCs) for storing configuration data. 4. Consumer electronics: Found in devices like gaming consoles and set-top boxes for firmware storage.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: 64-kilobit electrically erasable programmable read-only memory (EEPROM) chip.
2. AM29F016D-90EC: 16-megabit flash memory chip with a fast access time of 90 nanoseconds.
3. M27C256B-12F1: 256-kilobit ultraviolet erasable programmable read-only memory (UV EPROM) chip.

These alternative models offer different features and capabilities, providing options based on specific requirements.

In conclusion, the AT27C800-12PC is a high-capacity PROM chip that provides reliable and secure non-volatile memory storage. Its fast access time, low power consumption, and easy integration make it suitable for various applications. However, its inability to modify or erase programmed data and limited write cycles are important considerations. Alternative models with different characteristics are available to cater to diverse needs in the field of non-volatile memory storage.