AT27C2048-70PC

Product Overview

Category

AT27C2048-70PC 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 AT27C2048-70PC has a capacity of 2,048 kilobits (256 kilobytes).
• Fast access time: With a speed rating of 70 nanoseconds, it offers quick data retrieval.
• Durable: This PROM chip can withstand multiple read operations without degradation.

Package and Quantity

The AT27C2048-70PC is available in a 32-pin plastic dual in-line package (PDIP). Each package contains one PROM chip.

Specifications

• Capacity: 2,048 kilobits (256 kilobytes)
• Access Time: 70 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PDIP

Pin Configuration

The detailed pin configuration of AT27C2048-70PC is as follows:

Pin Name Description 1 A0-A16 Address Inputs 2 VCC Power Supply 3 A17 Address Input 4 CE Chip Enable 5 OE Output Enable 6 WE Write Enable 7-30 Q0-Q23 Data Outputs 31 GND Ground 32 NC No Connection

Functional Features

• Chip Enable (CE): Activates the chip for reading or writing operations.
• Output Enable (OE): Enables the data outputs for reading.
• Write Enable (WE): Allows data to be written into the memory.
• Address Inputs (A0-A17): Selects the memory location to read from or write to.
• Data Outputs (Q0-Q23): Provide the stored data when reading from the chip.

Advantages

• Non-volatile storage: Ensures data integrity even during power loss.
• High capacity: Offers ample space for storing large amounts of data.
• Fast access time: Allows for quick retrieval of information.
• Durable design: Withstands multiple read operations without degradation.

Disadvantages

• Limited write capability: The AT27C2048-70PC does not support erasing or modifying stored data, making it less suitable for applications requiring frequent updates.
• Higher cost compared to other memory technologies: PROM chips tend to be more expensive than alternatives like EEPROM or flash memory.

Working Principles

The AT27C2048-70PC utilizes a technology called floating-gate MOSFET to store data. When writing, a high voltage is applied to the gate, trapping electrons in the floating gate, representing a logical "1." To erase the data, ultraviolet light is used to remove the trapped electrons. During reading, the stored charge is sensed to determine the logic level.

Application Field Plans

The AT27C2048-70PC finds applications in various fields, including: - Embedded systems - Automotive electronics - Industrial control systems - Medical devices - Communication equipment

Alternative Models

Other alternative models with similar functionality to the AT27C2048-70PC include: - AT28C256-15PU - AM27C2048-90DC - M27C4001-12F1

These models offer comparable capacities and features, providing flexibility in choosing the most suitable option for specific applications.

In conclusion, the AT27C2048-70PC is a high-capacity PROM chip that offers non-volatile memory storage with fast access times. While it has limitations in terms of write capability and cost compared to other memory technologies, its durability and data integrity make it a reliable choice for various electronic applications.