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Automotive High Reliability EEPROM Selection Guide

Automotive High Reliability EEPROM Selection Guide

Automotive High Reliability EEPROM Selection Guide

Product catalog summary
EEPROM for Automotive: High Reliability Selection Guide
Introduction
The document provides a comprehensive guide on ROHM's EEPROM series designed for automotive applications, emphasizing high reliability and long-term stability. These EEPROMs are crucial for automotive ECUs, especially with the rise of autonomous driving and ADAS systems.
Product Series Overview
  • BR24Hxxx-5AC Series: New process 125˚C type with ECC functionality, offering high-speed writing and extended life.
  • BR24Axx-WM Series: 105˚C type suitable for various automotive applications.
  • BR24Txx-3AM Series: 85˚C type designed for less demanding environments.
Key Features
  • Data Endurance: The BR24Hxxx-5AC series supports up to 4 million rewrites, significantly extending product life compared to conventional products.
  • Write Speed: Achieves the industry's fastest write speed of 3.5ms, reducing write time by 30% and enhancing reliability in data logging systems.
  • Voltage Range: Supports low 1.7V operation, compatible with 1.8V ±5% battery voltages, reducing standby current and supporting applications like keyless entry.
Technical Specifications
  • Operating Temperature: Ranges from -40˚C to +125˚C, depending on the series.
  • Endurance and Data Retention: Up to 106 rewrites and 40 years of data retention for certain models.
  • Supply Voltage: Ranges from 1.7V to 5.5V, accommodating various automotive applications.
Product Lineup
The document lists various EEPROM models with details on package types, density, bit format, supply voltage, current consumption, write cycle time, operating temperature, endurance, and data retention. The lineup includes I2C BUS, SPI BUS, and Microwire BUS EEPROMs, each tailored for specific automotive needs.
Conclusion
ROHM's EEPROM series offers robust solutions for automotive applications, ensuring high reliability, extended product life, and compatibility with modern automotive systems. The series is designed to meet the rigorous demands of automotive environments, providing peace of mind for manufacturers and users alike.
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Catalog excerpts

Automotive High Reliability EEPROM Selection Guide-1

Creatine the future ” mill

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Automotive High Reliability EEPROM Selection Guide-2

High-speed writing and long life improve reliability in a variety of applications ROHM’s New EEPROM series ROHM Automotive-Grade AEC-Q100 85˚C/105˚C/125˚C series ROHM EEPROM series The advent of autonomous driving and vehicles equipped with ADAS (Advanced Driver Assistance System) is increasing the demand for high reliability automotive ECUs (Electronic Control Units). High reliability is also required for non-volatile memory used together with the MCU in ECUs. ROHM EEPROMs, adopted in a variety of automotive applications, including powertrain and body systems, have a proven track record for...

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Automotive High Reliability EEPROM Selection Guide-3

Input Voltage Range Comparison Compatible with 1.8V ±5% battery voltages. Reduces standby current when used at 1.8V. Leveraging proprietary memory cell management technology allows ROHM automotive EEPROMs to support not only standard 3V MCUs for low 1.7V voltage operation, but low voltage 1.8V MCUs for keyless entry and other application as well. Conventional Conventional Conventional BR24Hxxx-5AC Product A Product B Product C series (Write ICC=3mA) (Write ICC=3mA) (Write ICC=2mA) (Write ICC=1.7mA) Automotive EEPROMs ☆Under Development

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Automotive High Reliability EEPROM Selection Guide-4

125°C Operation Built-in ECC Function SPI BUS EEPROM BR25Hxxx-5AC series The content specified herein is for the purpose of introducing ROHM’s products (hereinafter “Products”). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended...

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