AT27C080-90TC

Product Overview

Category: Integrated Circuit (IC)

Use: The AT27C080-90TC is a programmable read-only memory (PROM) IC. It is commonly used for storing non-volatile data that needs to be retained even when power is turned off.

Characteristics: - Non-volatile memory - High storage capacity - Fast access time - Low power consumption

Package: The AT27C080-90TC is available in a 32-pin Thin Small Outline Package (TSOP). This package provides a compact and lightweight form factor, making it suitable for various applications.

Essence: The essence of the AT27C080-90TC lies in its ability to store large amounts of data reliably and retain it without the need for continuous power supply.

Packaging/Quantity: The AT27C080-90TC is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Memory Capacity: 8 Megabits (1 Megabyte)
• Access Time: 90 nanoseconds
• Operating Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 20 years

Pin Configuration

The AT27C080-90TC has a total of 32 pins. Here is the detailed pin configuration:

```

Pin Name Description

1 A0-A18 Address Inputs 2 CE Chip Enable 3 OE Output Enable 4 WE Write Enable 5 I/O0 Data Input/Output 0 6 I/O1 Data Input/Output 1 ... 31 VCC Power Supply 32 GND Ground ```

Functional Features

• Easy programming: The AT27C080-90TC can be programmed using standard PROM programming equipment.
• High-speed access: With a fast access time of 90 nanoseconds, it allows for quick retrieval of stored data.
• Low power consumption: The IC operates at low power levels, making it suitable for battery-powered devices.
• Data protection: The chip features a write protect pin (WE) to prevent accidental modification of stored data.

Advantages and Disadvantages

Advantages: - Large storage capacity - Fast access time - Low power consumption - Easy to program - Long data retention period

Disadvantages: - Read-only memory, cannot be modified once programmed - Limited endurance for write cycles

Working Principles

The AT27C080-90TC is based on the principle of electrically programmable read-only memory (EPROM). It uses a floating gate transistor structure to store data. During programming, a high voltage is applied to the gate, trapping charge in the floating gate. This trapped charge determines the logic state of each memory cell, allowing the IC to retain the programmed data even when power is removed.

Detailed Application Field Plans

The AT27C080-90TC finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Stores critical data such as calibration tables, configuration settings, and diagnostic information. 3. Industrial control systems: Provides non-volatile memory for storing program code and configuration data in industrial automation equipment. 4. Consumer electronics: Used in devices like set-top boxes, gaming consoles, and digital cameras for storing firmware and data.

Detailed and Complete Alternative Models

1. AT27C040-90TC: 4 Megabit (512 Kilobyte) version with similar characteristics.
2. AT27C256R-45PU: 256 Kilobit (32 Kilobyte) version with lower capacity but faster access time.
3. AT27LV010A-12JC: 1 Megabit (128 Kilobyte) version with low voltage operation and extended temperature range.

These alternative models offer different capacities, access times, and features to suit specific application requirements.

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