ROHM Launches BR24H-5AC series


ROHM has launched newly introduced 125°C operation compatible I2C bus EEPROMs, BR24H-5AC series targets applications that require data storage under harsh environments, such as factory settings for onboard cameras and sensors, airbag operating history, and data logging for always-on operating industrial automation systems and servers.

The BR24H-5AC series of 125°C operation compatible EEPROMs is the first in the industry to achieve a writing time of 3.5ms by implementing original data writing and reading circuit technology, reducing writing time by 30% compared to the 5ms of conventional products. Additionally, in contrast to standard products capable of just 1 million rewrites, the BR24H-5AC series guarantees up to four million writing cycles by data endurance, which not only extends application service life, but is ideal for data loggings requiring frequent data rewrites.

In the automotive and industrial equipment sector, safety and traceability requirements make it necessary to store the operating history in non-volatile memory in the system. Among these, EEPROMs are typically adopted over other types of non-volatile memory such as flash memory in applications that require high reliability, including onboard cameras, airbags, industrial automation systems and servers, due to their ability to reliably write and store data under harsh conditions.

Key Features

The BR24H-5AC series provides the following four features by leveraging original data read/write circuit technologies that suppress manufacturing variations in memory cell characteristics to maximize memory performance, contributing to a more efficient development of systems.

1. The industry’s fastest I2C bus EEPROMs reduce initial writing time by 30%
The BR24H-5AC series achieves the fastest writing time on the market for 125°C operation compatible I2C bus EEPROMs, clocking in at an unprecedented 3.5ms. This makes it possible to reduce writing time by 30 % over the conventional while contributing to greater reliability in emergency data logging systems.

2. Enables up to 4 million rewrites, contributing to longer application life This new series has achieved an industry-leading four million rewrites – 4 times more than standard products that guarantee just 1 million rewrites. This not only extends application service life, but also makes it ideal for data logging applications requiring frequent data rewrites.

3. Low 1.7V operation ideal for battery-driven applications
Support for low voltage operation makes it possible to be adopted by not only general 3V and 5V types, but 1.8V battery applications as well, such as keyless entry.

4.Meets international high-reliability requirements
In addition to qualification under the AEC-Q100 worldwide automotive reliability standard, the BR24H-5AC series supports high temperatures up to 125°C and integrates ECC (Error Check and Correction) functionality to protect important data from accidental memory failures. At the same time, a broad lineup is offered in a variety of common surface mount packages and capacities utilizing a standard EEPROM pin layout that makes it easy to replace existing products.