AT27C040-90RC

Product Overview

Use

This product is commonly used for storing permanent data or program code that cannot be modified once programmed.

Characteristics

Non-volatile: The stored data remains intact even when power is removed.
High storage capacity: The AT27C040-90RC has a capacity of 4 megabits (512 kilobytes).
Fast access time: It operates at a speed of 90 nanoseconds, allowing for quick retrieval of data.
Low power consumption: The chip is designed to minimize power usage during operation.
Durable: The AT27C040-90RC is resistant to environmental factors such as temperature and humidity.

Package

The AT27C040-90RC is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of this product lies in its ability to store large amounts of data permanently, making it ideal for applications where data integrity is crucial.

Packaging/Quantity

The AT27C040-90RC 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 specifications.

Specifications

Memory Capacity: 4 megabits (512 kilobytes)
Access Time: 90 nanoseconds
Supply Voltage: 5 volts
Operating Temperature Range: -40°C to +85°C
Input/Output Voltage Levels: TTL-compatible

Detailed Pin Configuration

The AT27C040-90RC has a total of 32 pins, which are assigned specific functions as follows:

A16: Address input pin 16
A14: Address input pin 14
A12: Address input pin 12
A7: Address input pin 7
A6: Address input pin 6
A5: Address input pin 5
A4: Address input pin 4
A3: Address input pin 3
A2: Address input pin 2
A1: Address input pin 1
A0: Address input pin 0
VPP: Programming voltage supply
WE: Write enable input
OE: Output enable input
CE: Chip enable input
NC: No connection (unused pin)
DQ0: Data input/output pin 0
DQ1: Data input/output pin 1
DQ2: Data input/output pin 2
DQ3: Data input/output pin 3
DQ4: Data input/output pin 4
DQ5: Data input/output pin 5
DQ6: Data input/output pin 6
DQ7: Data input/output pin 7
VCC: Power supply voltage
GND: Ground
A15: Address input pin 15
A13: Address input pin 13
A11: Address input pin 11
A10: Address input pin 10
A9: Address input pin 9
A8: Address input pin 8

Functional Features

Easy programming: The AT27C040-90RC can be programmed using standard PROM programming equipment.
High reliability: The stored data is highly reliable and resistant to accidental erasure or modification.
Efficient operation: The chip operates at high speeds, allowing for quick access to stored data.
Low power consumption: The AT27C040-90RC is designed to minimize power usage, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

Non-volatile memory ensures data integrity.
High storage capacity allows for storing large amounts of data or program code.
Fast access time enables quick retrieval of information.
Low power consumption prolongs battery life in portable devices.

Disadvantages

Inability to modify or update stored data once programmed.
Limited storage capacity compared to other memory technologies.
Relatively slower access times compared to modern memory technologies.

Working Principles

The AT27C040-90RC operates based on the principle of electrically erasable programmable read-only memory (EEPROM). It uses a grid of transistors to store binary data in the form of electrical charges. Once programmed, the data remains intact even when power is removed.

Detailed Application Field Plans

The AT27C040-90RC finds applications in various fields, including: 1. Embedded systems: Used for storing firmware or boot code in microcontrollers or

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací AT27C040-90RC v technických řešeních

Sure! Here are 10 common questions and answers related to the application of AT27C040-90RC in technical solutions:

Q: What is AT27C040-90RC? A: AT27C040-90RC is a type of EEPROM (Electrically Erasable Programmable Read-Only Memory) chip with a capacity of 4 megabits (512 kilobytes). It operates at a speed of 90 nanoseconds.
Q: What are some typical applications of AT27C040-90RC? A: AT27C040-90RC is commonly used in various electronic devices such as microcontrollers, embedded systems, automotive electronics, and consumer electronics.
Q: How does AT27C040-90RC store data? A: AT27C040-90RC uses floating-gate transistors to store data. The data can be written or erased electrically using specific programming voltages.
Q: Can AT27C040-90RC be reprogrammed multiple times? A: No, AT27C040-90RC is a one-time programmable memory chip. Once programmed, the data cannot be changed or erased.
Q: What is the operating voltage range for AT27C040-90RC? A: AT27C040-90RC operates within a voltage range of 4.5V to 5.5V.
Q: How can I interface AT27C040-90RC with a microcontroller? A: AT27C040-90RC uses a parallel interface, so you can connect it to a microcontroller using address lines, data lines, control signals (such as chip enable and write enable), and power supply connections.
Q: Is AT27C040-90RC compatible with 3.3V systems? A: No, AT27C040-90RC is designed to work with 5V systems. If you want to use it with a 3.3V system, you may need level-shifting circuitry.
Q: Can AT27C040-90RC retain data without power? A: Yes, AT27C040-90RC has non-volatile memory, which means it can retain data even when the power is turned off.
Q: What is the typical endurance of AT27C040-90RC? A: AT27C040-90RC has a typical endurance of 10,000 write cycles per byte. After that, the data retention may start to degrade.
Q: Are there any special precautions to take while handling AT27C040-90RC? A: Yes, it is important to handle AT27C040-90RC properly to avoid electrostatic discharge (ESD) damage. Use proper ESD protection measures such as grounding yourself and using an anti-static wrist strap or mat.