Specifications
Capacity1Package Size E.MMC Version Ordering Information
32GB 11.5x13x1.0mm 5.1 HS400 SDINBDA4-32G
64GB 11.5x13x1.0mm 5.1 HS400 SDINBDA4-64G
128GB 11.5x13x1.0mm 5.1 HS400 SDINBDA4-128G
256GB 11.5x13x1.0mm 5.1 HS400 SDINBDA4-256G
1 1 GB = 1,000,000,000 bytes. Actual user capacity less.
2 Compatible with Android™, Chrome, and Windows® mobile operating systems.
3 Based on internal testing. Performance may vary depending on host device.
4 Varies by capacity. According to internal tests as shown in WDC’s data sheet of 7550 and 7232, iNAND® 7550 has
demonstrated 62% (for 64GB only), 135% and 275% (for 128GB and 64GB only) increase on SW, RR and RW performance
over iNAND®7232.
Enhanced performance, high capacity and exceptional endurance.
A 3D NAND e.MMC flash storage solution for mid and high-end
mobile devices.
SanDisk® iNAND® 7550 Embedded Flash Device
Performance I Endurance I Scalability
The iNAND 7550 e.MMC Embedded Flash Device (EFD) is based on
our latest 3D NAND technology and the 4th generation SmartSLC
architecture. Combining enhanced performance with the mature
e.MMC interface, iNAND 7550 EFD provides a better user experience
for launching applications, downloading and capturing high-resolution
videos. With up to 256GB1 capacity in a small form factor, iNAND 7550
EFD is designed for mid and high-end mobile devices as well as thin-
and-light compute devices2.
Key Benefits
Performance
Up to 260MB/s Sequential
Write performance: 60%
improvement over prior
generation, enabling users
to download and store a
2-hour HD movie (5GB) in
19 seconds3
Faster Random Read
performance using e.MMC
Command Queue mechanism
(CMDQ): 135% improvement
over prior generation4
Faster Random Write
performance: 275%
improvement over prior
generation4
Reliability
Power Immunity: 4th
generation SmartSLC
technology ensures data
integrity and backup in case
of a power event
Enhanced endurance: 80%
TBW improvement over
prior generation
Scalability
Scales e.MMC to the highest
capacity available
A wide range of capacities
allow designers to scale
within a single foot print:
32GB to 256GB in JEDEC
11.5x13x1.0mm package
Main Features
JEDEC e.MMC 5.1 standard
Gen4 SmartSLC technology
Secure Write Protect
Advanced Usage Diagnostics
with faster failure analysis
Device Diagnostic Report
(Gen4)
Encrypted Field Firmware
Upgrade (FFU)
Increased RPMB partition size
Contact Information
For all inquiries, please email:
OEMProducts@wdc.com
For more information, please visit:
www.sandisk.com
© 2017 Western Digital Corporation or its aliates. All rights reserved.
SanDisk and iNAND are registered trademarks or trademarks of Western
Digital Corporation or its aliates in the US and/or other countries. All other
marks are the property of their respective owners.
Western Digital Technologies, Inc., is the seller of record and licensee in the
Americas of SanDisk® products.
PB04-iNAND-7550-EN-US-1117-01
