AT28HC256F-90UM/883

Product Overview

Category: Integrated Circuit (IC)

Use: The AT28HC256F-90UM/883 is a high-speed, low-power Electrically Erasable Programmable Read-Only Memory (EEPROM) IC. It is designed for applications that require non-volatile memory storage with fast read and write operations.

Characteristics: - High-speed operation - Low power consumption - Non-volatile memory - Electrically erasable and programmable - Durable and reliable

Package: The AT28HC256F-90UM/883 is available in a 32-pin ceramic dual-inline package (CDIP). This package offers excellent protection against environmental factors such as moisture and temperature variations.

Essence: The essence of the AT28HC256F-90UM/883 is its ability to store and retrieve data quickly and reliably, making it suitable for various electronic devices and systems.

Packaging/Quantity: The AT28HC256F-90UM/883 is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Operating Voltage: 4.5V to 5.5V
• Access Time: 90ns
• Memory Size: 256 kilobits (32 kilobytes)
• Organization: 32K x 8 bits
• Interface: Parallel
• Data Retention: 10 years
• Endurance: 100,000 write cycles

Pin Configuration

The AT28HC256F-90UM/883 has a total of 32 pins. The pin configuration is as follows:

Pin 1: Chip Enable (CE) Pin 2: Output Enable (OE) Pin 3: Write Enable (WE) Pin 4-11: Address Inputs (A0-A7) Pin 12-19: Address Inputs (A8-A15) Pin 20-27: Data Inputs/Outputs (D0-D7) Pin 28: Supply Voltage (+5V) Pin 29: Ground (GND) Pin 30: No Connection (NC) Pin 31: No Connection (NC) Pin 32: No Connection (NC)

Functional Features

The AT28HC256F-90UM/883 offers the following functional features:

1. High-Speed Operation: The IC provides fast access times, allowing for efficient data retrieval and storage.

2. Low Power Consumption: It is designed to minimize power consumption, making it suitable for battery-powered devices.

3. Non-Volatile Memory: The EEPROM retains stored data even when the power is turned off, ensuring data integrity.

4. Electrically Erasable and Programmable: The IC can be easily erased and reprogrammed electrically, eliminating the need for physical memory replacement.

Advantages and Disadvantages

Advantages: - Fast read and write operations - Low power consumption - Non-volatile memory - Easy erasing and reprogramming

Disadvantages: - Limited memory size (256 kilobits) - Relatively high cost compared to other memory technologies

Working Principles

The AT28HC256F-90UM/883 utilizes a combination of electronic circuits and memory cells to store and retrieve data. When powered on, the IC allows data to be written or read through its parallel interface. The stored data remains intact even when the power is disconnected, thanks to the non-volatile nature of the EEPROM technology.

Application Field Plans

The AT28HC256F-90UM/883 can be used in various applications, including but not limited to: - Embedded systems - Industrial control systems - Automotive electronics - Communication devices - Medical equipment

Alternative Models

1. AT28HC256F-90UM/883A: Similar to the AT28HC256F-90UM/883, but with extended temperature range.
2. AT28HC256F-90UM/883B: Improved version with lower power consumption and faster access times.
3. AT28HC256F-90UM/883C: Higher capacity variant with 512 kilobits (64 kilobytes) of memory.

These alternative models offer similar functionality but may have slight differences in specifications and performance.

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