AT27C040-90JU

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AT27C040-90JU

IC EPROM 4MBIT PARALLEL 32PLCC

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Spezifikationen

Part Status Active
DigiKey Programmable Not Verified
Memory Type Non-Volatile
Memory Format EPROM
Technology EPROM - OTP
Memory Size 4Mbit
Memory Organization 512K x 8
Memory Interface Parallel
Access Time 90 ns
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TC)
Mounting Type Surface Mount
Package / Case 32-LCC (J-Lead)
Supplier Device Package 32-PLCC (13.97x11.43)
Base Product Number AT27C040

Übersicht

Description

The AT27C040-90JU is a high-performance 4 Megabit (512K x 8) Electrically Erasable Programmable Read-Only Memory (EEPROM) produced by Atmel (now part of Microchip Technology). It features a 90 ns access time, making it suitable for applications requiring quick data retrieval. The device operates on a supply voltage of 5V, and it supports both byte-wide and word-wide data formats.
This EEPROM can be programmed and erased electrically, allowing for greater flexibility in design and implementation compared to traditional PROMs. It uses a single 5V supply for programming and reading, simplifying power management in electronic systems. The AT27C040-90JU is often used in applications such as firmware storage, digital signal processing, and data retention in embedded systems.
The package options include standard DIP and surface mount configurations, making it versatile for various circuit layouts. Its reliability and ease of use make it a popular choice among engineers and developers for non-volatile memory requirements.

Features

The AT27C040-90JU is a 4-megabit (512K x 8) EEPROM from Atmel (now part of Microchip Technology). Key features include:
1. Memory Organization: It has a 512K x 8 bit organization, allowing storage of 4 megabits of data.
2. Access Time: The device offers a fast access time of 90 ns, enabling quick read operations.
3. Programming: The AT27C040 supports a single 5V power supply for programming and read operations, simplifying usage.
4. Endurance: It features a high endurance of up to 1,000,000 program/erase cycles.
5. Data Retention: Offers data retention of up to 20 years, ensuring data integrity over time.
6. Package Options: Available in a 32-pin DIP package, facilitating easy integration into various applications.
7. Compatibility: It is compatible with standard EPROM programming algorithms, making it easy to replace traditional EPROMs.
These features make the AT27C040-90JU suitable for applications requiring reliable, fast, and non-volatile memory solutions.

Package

The AT27C040-90JU is packaged in a 32-pin Dual In-line Package (DIP) format. This type of package allows for easy mounting on circuit boards and is commonly used in electronic applications for EPROM memory.

Pinout

The AT27C040-90JU is a 4 Megabit (512K x 8) EPROM (Erasable Programmable Read-Only Memory) with a pin count of 32.
The functions of the pins are as follows:
1. A0-A18: Address inputs for accessing the memory locations.
2. D0-D7: Data output pins that provide the stored data.
3. VCC: Power supply pin (typically +5V).
4. GND: Ground pin.
5. OE (Output Enable): Activates the output buffers when low.
6. CE (Chip Enable): Activates the chip when low.
7. WE (Write Enable): Controls write operations; must be low for programming.
8. VPP: Programming voltage input; typically +12.5V for programming.
9. NC (No Connect): Not connected pins; can be left unconnected.
This device is primarily used in applications that require non-volatile storage of program code or data.

Manufacturer

The AT27C040-90JU is manufactured by Microchip Technology Inc., a prominent American company known for its microcontroller and microprocessor solutions. Microchip specializes in providing a wide range of semiconductor products, including memory devices, analog products, and embedded control solutions. The company serves various industries, including automotive, industrial, consumer, and communications, and is recognized for its commitment to innovation, quality, and customer support.

Application

The AT27C040-90JU is a high-performance EEPROM used in various applications, including industrial control systems, telecommunications equipment, automotive electronics, and consumer electronics. It is suitable for storing firmware, configuration data, and program code in embedded systems. Its reprogrammable nature allows for easy updates, making it ideal for applications requiring flexibility and reliability in data storage.

Equivalent

The AT27C040-90JU is a 4 Mbit EEPROM (Flash memory). Equivalent products include:
1. AM27C040 - AMD
2. M27C040 - STMicroelectronics
3. W27C040 - Winbond
4. 29F040 - TOSHIBA (Flash version)
Ensure compatibility in pinout, voltage, and programming methods before substitution.

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