AT27C080-15PI

Product Overview

Category

AT27C080-15PI 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 AT27C080-15PI has a storage capacity of 8 megabits (1 megabyte).
• Fast access time: With a maximum access time of 150 nanoseconds, it ensures quick retrieval of data.
• Low power consumption: The chip operates on low power, making it energy-efficient.
• Durable: It can withstand multiple read operations without degradation.

Package and Quantity

The AT27C080-15PI is available in a 32-pin plastic dual in-line package (PDIP). Each package contains one chip.

Specifications

• Memory Capacity: 8 megabits (1 megabyte)
• Access Time: 150 nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PDIP

Pin Configuration

The AT27C080-15PI has a total of 32 pins. Here is the detailed pin configuration:

```

Pin Name Description

1 A0-A18 Address Inputs 2 Q7-Q0 Data Outputs 3 CE Chip Enable 4 OE Output Enable 5 WE Write Enable 6 VCC Power Supply 7 GND Ground 8-31 NC No Connection 32 NC No Connection ```

Functional Features

• Chip Enable (CE): Activates the chip for read or write operations.
• Output Enable (OE): Enables the data outputs.
• Write Enable (WE): Allows data to be written into the memory.
• Address Inputs (A0-A18): Selects the memory location to read from or write to.
• Data Outputs (Q7-Q0): Outputs the stored data.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High storage capacity allows for ample data storage.
• Fast access time enables quick retrieval of information.
• Low power consumption makes it energy-efficient.
• Durable design withstands multiple read operations.

Disadvantages

• The data cannot be modified or erased once programmed.
• Limited storage capacity compared to other memory technologies.
• Requires external programming equipment for initial data programming.

Working Principles

The AT27C080-15PI utilizes a technology called electrically programmable read-only memory (EPROM). It stores data using a grid of transistors that can be selectively programmed or erased. Once programmed, the data remains intact even when power is removed.

During read operations, the chip's address inputs select the desired memory location, and the data outputs provide the stored information. When writing data, the chip must be enabled by activating the chip enable (CE) and write enable (WE) pins. The desired data is then applied to the data inputs, and the chip programs the selected memory location.

Application Field Plans

The AT27C080-15PI finds applications in various electronic devices and systems, including: 1. Embedded systems: Used for firmware storage in microcontrollers and microprocessors. 2. Automotive electronics: Stores critical data such as calibration parameters and configuration settings. 3. Industrial control systems: Provides non-volatile memory for storing program code and configuration data. 4. Medical devices: Used for storing patient data, firmware, and device settings. 5. Communication equipment: Stores configuration data and firmware for routers, switches, and modems.

Alternative Models

Here are some alternative models that offer similar functionality: - AT27C040-15PU - AT28C64B-15PU - AM29F010B-90JC - SST39SF010A-70-4C-PHE

These models provide comparable storage capacity, access time, and package options as the AT27C080-15PI.

In conclusion, the AT27C080-15PI is a programmable read-only memory chip with a high storage capacity, fast access time, and low power consumption. It finds applications in various electronic devices and systems where non-volatile memory is required. While it has limitations such as limited storage capacity and inability to modify or erase data, it offers reliable and durable data storage.