AT28C256-15LM/883

series introduction

# Introduction to the AT28C256 - 15LM/883 Product Series

## 1. Overview
The AT28C256 - 15LM/883 is a high - performance, non - volatile memory product series that belongs to the family of Electrically Erasable Programmable Read - Only Memory (EEPROM). This series is specifically designed to meet the demanding requirements of various applications, especially those in harsh environments where reliability and performance are of utmost importance.

## 2. Key Features

### Memory Capacity
The AT28C256 - 15LM/883 offers a substantial memory capacity of 256 kilobits (32,768 bytes). This large storage space makes it suitable for storing a wide range of data, such as configuration parameters, calibration data, and historical records in different systems.

### Fast Access Time
With an access time of 150 nanoseconds (as indicated by the “15” in the part number), this EEPROM series provides rapid data retrieval. This fast access time is crucial for applications where real - time data processing is required, ensuring that the system can quickly access the stored information and continue its operations without significant delays.

### Low Power Consumption
The AT28C256 - 15LM/883 is engineered to consume minimal power. This is beneficial for battery - powered devices or systems where power efficiency is a key consideration. The low power consumption helps to extend the battery life of portable devices and reduces the overall energy consumption of larger systems.

### Radiation Hardening (883)
The “/883” in the part number indicates that the AT28C256 - 15LM/883 is radiation - hardened. This makes it highly suitable for use in aerospace, military, and other applications where the components are exposed to high levels of radiation. The radiation - hardened design ensures that the memory retains its data integrity and functionality even in the presence of ionizing radiation, which can otherwise cause bit flips and data corruption in non - hardened components.

### Electrically Erasable and Programmable
As an EEPROM, the AT28C256 - 15LM/883 allows for electrical erasure and programming. This means that the stored data can be easily modified or updated without the need for external programming equipment in most cases. The ability to electrically erase and reprogram the memory makes it a flexible solution for applications where the data needs to be changed over time, such as in software - defined systems.

## 3. Package and Pin Configuration
The AT28C256 - 15LM/883 is typically available in a standard 28 - pin dual - in - line package (DIP). This package type is widely recognized and easy to integrate into printed circuit boards (PCBs). The pin configuration is designed to provide convenient access to the various functions of the EEPROM, including data input/output, address lines, control signals, and power supply pins.

## 4. Operating Conditions

### Temperature Range
The AT28C256 - 15LM/883 is designed to operate over a wide temperature range. It can typically function reliably in temperatures ranging from - 55°C to +125°C. This wide temperature tolerance makes it suitable for use in extreme environmental conditions, such as in automotive, industrial, and aerospace applications where the temperature can vary significantly.

### Power Supply
The EEPROM operates on a single +5V power supply. This standard power supply voltage simplifies the integration of the AT28C256 - 15LM/883 into existing systems, as most electronic systems already have a +5V power

Images for reference

32-LCC; 32L

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Datasheets

• AT28C256(E,F)

Partlist