Data Sheet - Confidential  
DOC 56-34-01508 • Rev 1.0 • March 2017 
 
 
iNAND® 7250
e.MMC 5.1 with HS400 Interface  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Confidential, subject to all applicable non-disclosure agreements 
www.SanDisk.com 
 
 
 
 
Confidential 
 
SanDisk® iNAND 7250  e.MMC 5.1+ HS400 I/F data sheet 
REVISION HISTORY 
Doc. No 
Revision 
Date 
Description 
DOC-56-34-01508 
1.0 
March - 2016 
Released version 
 
 
 
 
 
 
 
 
 
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© 2017 Western Digital Corporation or its affiliates.  All rights reserved.  Specifications are subject to change.  SanDisk® is a 
trademark of Western Digital Corporation or its affiliates, registered in the United States and other countries.  microSDHC is a 
trademark of SD-3C, LLC. Other brand names mentioned herein are for identification purposes only and may be the trademarks 
of their respective holder(s). 
 
 
 
© 2017 SanDisk – a Western Digital brand 
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SanDisk iNAND 7250 e.MMC 5.1 HS400 I/F data sheet 
 
TABLE OF CONTENTS 
1. 
Introduction ......................................................................................................................... 5 
1.1.  General Description ...................................................................................................... 5 
1.2.  Plug-and-Play Integration ............................................................................................. 6 
1.3.  Feature Overview ......................................................................................................... 7 
1.4.  MMC bus and Power Lines ........................................................................................... 8 
1.4.1.  Bus operating conditions ............................................................................................. 8 
2.  e.MMC Selected Features Overview ................................................................................ 10 
2.1.  HS400 Interface .......................................................................................................... 11 
2.2.  Enhanced User Data Area (EUDA) ............................................................................. 11 
2.3.  Field Firmware Upgrade (FFU) ................................................................................... 11 
2.4.  Cache ......................................................................................................................... 11 
2.5.  Discard ....................................................................................................................... 11 
2.6.  Power off Notifications ................................................................................................ 12 
2.7.  Packed Commands .................................................................................................... 12 
2.8.  Boot Partition .............................................................................................................. 12 
2.9.  RPMB Partition ........................................................................................................... 12 
2.10. Automatic Sleep Mode ................................................................................................ 12 
2.11. Sleep (CMD5) ............................................................................................................. 12 
2.12. Enhanced Reliable Write ............................................................................................ 12 
2.13. Sanitize ...................................................................................................................... 13 
2.14. Secure Erase .............................................................................................................. 13 
2.15. Secure Trim ................................................................................................................ 13 
2.16. Partition Management................................................................................................. 13 
2.17. Device Health ............................................................................................................. 14 
2.18. EOL Status ................................................................................................................. 14 
2.19. Enhanced Write Protection ......................................................................................... 14 
2.20. High Priority Interrupt (HPI)......................................................................................... 14 
2.21. H/W Reset .................................................................................................................. 14 
2.22. Host-Device Synchronization Flow (Enhanced STROBE) ........................................... 15 
2.23. Command-Queue ....................................................................................................... 15 
3.  Product Specifications ..................................................................................................... 16 
3.1.  Typical Power Measurements ..................................................................................... 16 
3.2.  Operating Conditions .................................................................................................. 17 
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SanDisk iNAND 7250 e.MMC 5.1 HS400 I/F data sheet 
 
3.2.1.  Operating and Storage Temperature Specifications ................................................... 17 
3.2.2.  Moisture Sensitivity ................................................................................................... 17 
3.3.  Reliability .................................................................................................................... 18 
3.4  Typical System Performance ...................................................................................... 19 
4.  Physical Specifications .................................................................................................... 20 
Interface Description ......................................................................................................... 22 
5. 
5.1.  MMC I/F Ball Array ..................................................................................................... 22 
5.2.  Pins and Signal Description ........................................................................................ 23 
5.3.  Registers value ........................................................................................................... 24 
5.3.1.  OCR Register ............................................................................................................ 24 
5.3.2.  CID Register.............................................................................................................. 24 
5.3.3.  DSR Register ............................................................................................................ 24 
5.3.4.  CSD Register ............................................................................................................ 25 
5.3.5.  EXT_CSD Register ................................................................................................... 26 
5.3.6.  User Density.............................................................................................................. 32 
6.  HW Application Guidelines ............................................................................................... 33 
6.1.  Design Guidelines ...................................................................................................... 33 
6.2.  Capacitor Selection & Layout Guidelines .................................................................... 34 
6.3.  Reference Schematics ................................................................................................ 36 
7.  Propriety iNAND 7250 feature overview .......................................................................... 37 
7.1.  Device Report ............................................................................................................. 37 
7.1.1.  Device Report fields .................................................................................................. 37 
7.2.  Power-Loss indications ............................................................................................... 38 
7.2.1.  Unstable Power-Supply indications ............................................................................ 38 
8.  Marking .............................................................................................................................. 40 
9.  Ordering Information ........................................................................................................ 41 
How to Contact Us .................................................................................................................. 42 
 
 
 
 
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SanDisk iNAND 7250 e.MMC 5.1 HS400 I/F data sheet 
1.  INTRODUCTION 
1.1.  General Description 
Overview  SanDisk iNAND 7250 is an Embedded Flash Drive (EFD) designed for write intensive 
applications in a wide range of home entertainment and security applications, such as Set-Top-
Box (STB), Over The Top (OTT), Home Gateways, Smart TV, Smart Security Cameras and more. 
The iNAND 7250 utilizes an LDPC ECC machine and MLC memory to provide a robust, high 
performance, high quality and high endurance product.  The LDPC engine significantly improves 
error correction enabling longer device lifetime and an increased ability to handle operation at 
high temperature.   
The iNAND 7250 provides 8GB to 64GB of capacity and supports e.MMC 5.1. The iNAND 7250 is 
the ideal choice to deliver high reliability and high performance for storage applications like 
imaging, video, music, GPS, gaming, email, office and other new applications such as NOR 
replacement for embedded systems or other devices. 
The design of the iNAND 7250 is based on a JEDEC compatible form factor measuring 
11.5x13mm (153 balls) for all capacities to lower integration costs and accelerate time-to-
market. 
Architecture iNAND 7250 combines an embedded thin flash controller with advanced 
enterprise Multi-level Cell (eMLC) NAND flash technology enhanced by SanDisk’s embedded 
flash management software running as firmware on the flash controller. iNAND 7250 employs 
an industry-standard eMMC 5.11 interface featuring  Command-Queue, HS400 interface, FFU, 
as well as legacy eMMC 4.51 features such as EUDA, Power Off Notifications, Packed 
commands, Cache, Boot / RPMB partitions, HPI, and HW Reset, making it an optimal device for 
both reliable code and data storage.  
Like our other iNAND products, iNAND 7250 offers plug-and-play integration and support for 
multiple NAND technology transitions, as well as features such as an advanced power 
management scheme. 
iNAND 7250 architecture and embedded firmware fully emulates a hard disk to the host 
processor, enabling read/write operations that are identical to a standard, sector-based hard 
drive. In addition, SanDisk firmware employs patented methods, such as virtual mapping, 
dynamic and static wear-leveling, and automatic block management to ensure high data 
reliability and maximizing flash life expectancy.  
iNAND 7250 also includes an intelligent controller, which manages interface protocols, data 
storage and retrieval, error correction code (ECC) algorithms, defect handling and diagnostics, 
power management and clock control.  
Combining high performance with features for easy integration and exceptional reliability, 
iNAND 7250 is an EFD designed to exceed the demands of both manufacturers and their 
customers.  
                                                    
1 Compatible to JESD84-B51 
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SanDisk iNAND 7250 e.MMC 5.1 HS400 I/F data sheet 
1.2.  Plug-and-Play Integration 
iNAND’s optimized architecture eliminates the need for complicated software integration and 
testing processes thereby enabling plug-and-play integration into the host system. The 
replacement of one iNAND device with another of a newer generation requires virtually no 
changes to the host. This allows manufacturers to adopt advanced NAND Flash technologies 
and update product lines with minimal integration or qualification efforts.  
iNAND 7250 features a MMC interface allows for easy integration regardless of the host 
(chipset) type used. All device and interface configuration data (such as maximum frequency 
and device identification) are stored on the device.  
Figure 1 shows a block diagram of the SanDisk iNAND 7250 with MMC Interface. 
MMC Bus 
Interface  
SanDisk iNAND  
Single Chip 
controller 
Data In/Out 
Flash 
Memory 
Control 
 
 
 
Figure 1 - SanDisk iNAND 7250 with MMC Interface Block Diagram
 
 
 
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SanDisk iNAND 7250 e.MMC 5.1 HS400 I/F data sheet 
1.3.  Feature Overview 
SanDisk iNAND 7250, with MMC interface, includes the following features: 
•  Memory controller and NAND flash 
•  Mechanical design that complies with JEDEC Specifications with specific optimizations for 
 
 
automotive applications 
•  Offered in three TFBGA packages of e.MMC 5.1 
o  11.5mm x 13mm x 0.8mm  (8GB-16GB)  
o  11.5mm x 13mm x 1.0mm  (32GB)  
o  11.5mm x 13mm x 1.2mm (64GB) 
•  Operating temperature range: –25C° to +85C° 
•  Dual power system 
•  Core voltage (VCC)  2.7-3.6 V 
• 
I/O (VCCQ) voltage, either: 1.7-1.95V or 2.7-3.6V  
•  8GB - 64GB of data storage 
•  Supports three data bus widths: 1bit (default), 4bit, 8bit 
•  Complies with e.MMC Specification Ver. 5.1 HS400 
•  Variable clock frequencies of 0-20 MHz, 0-26 MHz (default), 0-52 MHz (high-speed), 0-200 
MHz SDR (HS200), 0-200 MHz DDR (HS400) 
•  Up to 300 MB/sec bus transfer rate, using 8 parallel data lines at 200 MHz, HS400 Mode 
•  High data integrity with eMLC memory, advanced LDPC ECC engine, automatic refresh, 
advanced power protection 
•  Flexible EUDA, Fast boot 
•  Up to 3K P/E cycles, 10 year data retention @ 55°C fresh 
 
 
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SanDisk iNAND 7250 e.MMC 5.1 HS400 I/F data sheet 
1.4.  MMC bus and Power Lines 
SanDisk iNAND 7250 supports the MMC interface protocol. For more details regarding these 
buses refer to JEDEC standard No. JESD84-B51.   
The iNAND bus has the following communication and power lines: 
•  CMD: Command is a bidirectional signal. The host and iNAND operate in two modes, open 
drain and push-pull. 
•  DAT0-7: Data lines are bidirectional signals. Host and iNAND operate in push-pull mode. 
•  CLK: Clock input.  
•  RST_n: Hardware Reset Input. 
•  VCCQ: Power supply line for host interface. 
•  VCC: Power supply line for internal flash memory. 
•  VDDi: iNAND’s internal power node, not the power supply. Connect 0.1uF capacitor from 
VDDi to ground. 
•  VSS, VSSQ: Ground lines. 
•  RCLK: Data strobe. 
•  VSF: Vendor specific functions used for debugging purposes. 
 
1.4.1.  Bus operating conditions  
Table 1 - Bus operating conditions 
 
 
 
 
 
 
 
 
 
 
 
 
 
Max 
Unit 
VCCQ+0.5 
100 
V 
µA 
µA 
Parameter  
Peak voltage on all lines 
Input Leakage Current  (before initializing 
and/or connecting the internal pull-up 
resistors) 
Min  
-0.5 
-100 
Input Leakage Current  (after changing the 
-2 
2 
bus width and disconnecting the internal 
pull-up resistors)  
Output Leakage Current (before initializing 
and/or connecting the internal pull-up 
resistors) 
-100 
100 
µA 
Output Leakage Current (after changing 
-2 
2 
µA 
the bus width and disconnecting the 
internal pull-up resistors) 
 
© 2017 SanDisk – a Western Digital brand 
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