Automotive-Grade UFS and e.MMC
Embedded Flash Drives
The Storage You Can Drive On
Designed for the connected and autonomous car market, Western Digital’s automotive-grade
iNAND® UFS and e.MMC Embedded Flash Drives (EFDs) deliver high-performance and high-
reliability storage for a variety of demanding automotive applications. The devices address the
evolving needs of traditional applications such as infotainment and vehicle navigation systems,
and next generation applications such as Vehicle-to-Vehicle/Infrastructure communications,
telematics gateways, digital cluster, drive recorders, and autonomous driving.
Smart partitioning, a sophisticated read refresh algorithm, power fail immunity, and an LDPC
ECC engine are just a few of the features that make these some of the most advanced EFDs
on the market. With additional industry-leading features including automotive-optimized 3D
technology, iNAND SmartSLC™, and deep diagnostics, Western Digital iNAND automotive-grade
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Automot ive-Grade U FS and e.MMC Embedded Flash Drives
e.MMC and UFS EFDs empower your data-driven applications.
Automot ive-Grade U FS and e.MMC Embedded Flash Drives
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Advanced Features
3D Technology
*
• Higher performance, lower cost and lower power consumption
• Larger effective cell size and less cell-to-cell interference
• Higher reliability margins when compared to 2D NAND with similar bit density
SmartSLC
TM*
Western Digital’s iNAND automotive-grade e.MMC and UFS products feature industry-leading SmartSLC, designed to boost host
write performance and leverage the benefits of SLC to maximize device throughput and endurance.
Adaptive mechanisms ensure writes are routed through SLC blocks for superior write speeds and efficiently migrate data to
TLC to ensure performance consistency.
Advantages:
Performance:
Endurance:
• Boost sequential and random write performance to SLC level
• SLC-grade latency for better write-driven use cases
• Maintain high performance when media is fragmented
• Persistent performance even when media is full
*
Note: Applicable for AT EM132 and AT EU312
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Automot ive-Grade U FS and e.MMC Embedded Flash Drives
• Reduce host writes to the TLC area
• Reduces Write Amplification Factor (WAF) to the TLC area
• Increase product endurance and longevity (TBW)
Robustness:
• Leverage SLC’s higher resiliency to data corruption
• TLC/SLC redundancy increases power failure handling
Advanced Features
Advanced Device Report
iNAND products offer a proprietary device report feature with detailed information and diagnostics on the firmware and device
status at runtime. This information provides a deeper EFD status understanding, on top of the e.MMC and UFS JEDEC specs in an
easy-to-use method including:
• Wear-leveling areas and device health • Lifetime prediction • Error detection and correction
• Voltage droop and occurrences • Firmware release and update • Temperature
• Power diagnostics • Host read and write • Failures and recovery
Smart Partitioning
iNAND automotive-grade e.MMC and UFS Smart Partitioning implementation creates dedicated, physically separated and
individually managed memory areas. This protects specific partitions from the unwanted effects of overuse as well as
preventing any impact to the data integrity caused by activities in other areas, thus helping to maximize endurance, data
retention and separation.
Separate areas may include:
• TLC/MLC based User Area
• SLC based High Data Retention / Read Intensive / Secured area
• SLC based High Endurance area, tailored for write-intensive applications
Auto/Manual Read Refresh
A sophisticated automatic read refresh algorithm is implemented in the iNAND automotive-grade e.MMC and UFS devices to offer
better handling of data retention, read disturb and read refresh. It senses early signs of block degradation and automatically refreshes
the data. The algorithm includes multiple types of scans designed to identify affected pages with high Bit Error Rate (BER).
In addition, the host can initiate Refresh via command, which is proprietary in iNAND automotive-grade e.MMC and according
to JEDEC UFS3.0 in iNAND automotive-grade UFS.
Automot ive-Grade U FS and e.MMC Embedded Flash Drives
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Advanced Features
Power Immunity
iNAND automotive-grade e.MMC and UFS devices implement advanced mechanisms for protecting the device and the user data
from data loss, data corruption or device damage due to external power failures. This addresses the occurrence of both write
abort and voltage droop.
100% Content Preloading and Integrity Post IR Reflow
iNAND automotive-grade e.MMC and UFS are designed to support 100% content preloading (via external programmer)
pre-IR reflow and guarantee high data integrity post-IR reflow. This assures that the high temperature experienced during
the IR-reflow process does not affect the data integrity of the preloaded data.
Thermal Management
To prevent the damage to the NAND or controller while operating in high temperatures, the iNAND automotive-grade e.MMC
and UFS implement a robust thermal management mechanism. This mechanism is activated by default and automatically
adjusts the internal power mode to ensure protection from overheating. In addition, the iNAND automotive-grade UFS device
supports Temperature Event Notification-a JEDEC UFS3.0 parameter.
Suited for Automotive Applications
iNAND automotive-grade e.MMC and UFS devices undergo rigorous qualification and production testing, and comply with
automotive standards such as AEC-Q100 and are qualified to meet and exceed the standard requirements.
Fast Boot
iNAND automotive-grade e.MMC and UFS devices enable the host to boot from boot partitions/LUs of the device.
This feature allows the system to be functional at the proper time. For example, the console display and the remaining car
system functionality are needed the moment the driver enters or activates the vehicle. In addition, this feature enables the
replacement of SPI NOR for the inherent capability of the iNAND device, reducing BOM costs and board space.
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Automot ive-Grade U FS and e.MMC Embedded Flash Drives
Automotive iNAND® Embedded Flash Devices
Capacity (TB) 16GB – 256GB 16GB – 256GB 32GB to 256GB 32GB to 256GB 8GB to 64GB 8GB to 64GB
Interface
Operating Temperature –40°C to 85°C –40°C to 105°C –40°C to 85°C –40°C to 105°C –40°C to 85°C –40°C to 105°C
Sequential R/W (MB/s) Up to 800/550 Up to 310/250 Up to 300/125
Random R/W (MB/s) Up to 35K/40K Up to 20K/12K Up to 22K/12K
Enhanced Features
Package 11.5x13x1.2mm 11.5x13x1.0mm, 11.5x13x1.2mm 11.5x13x0.8mm, 11.5x13x1.0mm, 11.5x13x1.2mm
Ordering Information SDINDDH6-###G-XA SDINDDH6-###G-ZA SDINBDA6-###G-XA1 SDINBDA6-###G-ZA1 SDINBDG4-###G-XA2 SDINBDG4-###G-ZA2
Formerly Known As
iNAND AT EU312
Grade 3
Advanced Health Report, Smart Partitioning, Auto and
Manual Refresh, UFS 3.0 automotive features included
iNAND® 8250A iNAND® 7550A iNAND® 7250A
iNAND AT EU312
Grade 2
UFS 2.1 e.MMC 5.1 HS400
iNAND AT EM132
Grade 3
Advanced Health Report, Auto and Manual Refresh,
Smart Partitioning, Thermal Management
iNAND AT EM132
Grade 2
iNAND AT EM122
Advanced Health Report, Auto and Manual Refresh,
iNAND AT EM122
Grade 3
Smart Partitioning, Thermal Management
Grade 2
Note: One gigaby te (GB) is equ al to one bi llion by tes. Actual user capacity may be less due to operating envi ronment.
Automot ive-Grade U FS and e.MMC Embedded Flash Drives
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©2021 Wester n Digita l Corpor ation or it s affiliates. All r ights reserve d. Western Di gital, the Wester n Digital l ogo, iNAND, and Smar tSLC are register ed
trademarks or trademarks of Western Digital Corporation or its affiliates in the US and/or other countries. References in this publication to Western Digital
produc ts, programs, o r servic es do not imply that t hey will be m ade availa ble in all countrie s. Product spec ificatio ns provided are sam ple specificati ons that are
subjec t to change and do not co nstitute a warra nty. Pictures shown m ay vary from actu al produc ts. All other mar ks are the proper ty of their respe ctive owners.
5601 Great O aks Parkway
San Jose, CA 9 5119, USA
www.westerndigital.com
OEMProducts@wdc.com for any inquiries.
Feburary 2021
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