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PCISD Card Standard


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SD Standard
 Form Factors
 SD Specification
 Source and Reference

SD Standard

SD standard is a portable storage standard from www.sdcard.org.

Form Factors

The form factors of SD Cards are full size, miniSD and microSD. miniSD is replaced by microSD, 
Form FactorSDmicroSD
Dimension32mm×24mm×2.1mm15mm×11mm×1mm
Card Capacity TypeSD, SDHC, SDXC, SDUC
PhysicalNumber of pinsHigh speed and UHS-I: 9 pins
UHS-II and UHS-III: 17 pins
SD Express 1-lane: 17-19 pins
SD Express 2-lane: 25-27 pins
High Speed and UHS-1: 8 pins
UHS-II and UHS-III: 16 pins
SD Express 1-lane: 17 pins
Operating voltage3.3V VDD range in the first-row: 2.7V-3.6V
1.8V VDD range in the second-row: 1.70V-1.95V
Write-protect SwitchYESNO

SD Specification

Spec. VersionCapacity & Form FactorFile SystemBus InterfaceSpeed ClassOthers
Ver. 8.00 (2020)  SD Express PCIe Gen.4 ×1 Lane
SD Express PCIe Gen.3 & 4 ×2 Lane
SD Express (Ver.8.00)
  
Ver. 7.10 (2019)
Ver. 7.00 (2018)
SDUC, microSDUC (Ver.7.00)exFAT (Ver.7.00)SD Express PCIe Gen.3 ×1 Lane
SD Express (Ver.7.00)
microSD Express (Ver.7.10)
  
Ver. 6.00 (2017)
Ver. 5.10 (2016)
Ver. 5.00 (2016)
  UHS-III
SDHC III, SDXC III (Ver.6.00)
Video Speed Class, V6, V10, V30, V60, V90 (Ver.5.00)Low Voltage Signaling
LV (Ver.6.00)
App Performance Class
A1 (Ver.5.10)
A2 (Ver.6.00)
Ver. 4.20 (2013)
Ver. 4.00 (2011)
  UHS-II
SDHC II, SDXC II (Ver.4.00)
UHS Speed Class 3 (Ver.4.20)SMART microSD (Ver.4.00)
ISDIO Wireless LAN SD (Ver.4.20)
Ver. 3.01 (2010)
Ver. 3.00 (2009)
Ver. 2.00 (2006)
Ver. 1.20 (2005)
Ver. 1.10 (2004)
Ver. 1.01 (2000)
SDXC, microSDXC (Ver.3.00)
exFAT (Ver 3.00)UHS-I
SDHC I, SDXC I (Ver. 3.01)
High Speed
HS (Ver. 1.10)
Default Speed
DS (Ver. 1.01)
HHS Speed Class1 (Ver. 3.01)
CLASS 10 (Ver. 3.00)
CLASS 6, CLASS 4, CLASS 2 (Ver. 2.00)
SD smart (Ver. 2.00)
SDHC, microSDHC (Ver.2.00)
FAT32 (Ver 2.00)
SD (Ver 1.01)
 microSD (Ver 1.20)
FAT12/16 (Ver. 1.01)

Source and Reference


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ID: 201001202 Last Updated: 12/10/2020 Revision: 0


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