microSD Card Description and Pin Out
microSD Card is a type of Removable NAND-type small flash memory card format which, introduced in 2003.
microSD measures 11mm x 15mm and 1mm thick.
Two pinout tables are provided for microSD below; one table provides the pin out for SD Mode, and one table shows the SPI mode.
MicroSD Connector Manufacturers are listed below.
MicroSD is short hand for Micro-Secure Digital [Transflash]. Although Transflash was the original name for microSD, the name was changed to microSD once the standard was adpoted. Some manufacturers still use the term microSD/Transflash to describe a product.
Also refer to the SD Card, or the miniSD Card pages. There are 3 speed grades: Class 2, 2MB/s, Class 4, 4MB/s and class 6 card, 6MB/s.
Mini and micro SD Card - EMI filtering and 25 kV ESD protection: EMIF06-mSD01F2, STMicroelectronics
Pin # | Pin Name | Signal Function |
1 | DAT2 | Data Bit 2 |
2 | CD/DAT3 | Card Detect / Data Bit 3 |
3 | CMD | Command Line |
4 | Vdd | Supply Voltage 2.7v / 3.6v |
5 | CLK | Clock |
6 | Vss | Ground |
7 | DAT0 | Data Bit 0 |
8 | DAT1 | Data Bit 1 |