Comparison of Removable Memory Card sizes
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.
Refer to the following page for MicroSD Connector Manufacturers.
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.
| 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 |
Comparison of Removable Memory Card sizes
| Pin # | Pin Name | Signal Function |
| 1 | NC | No Connect |
| 2 | /CS | Chip Select |
| 3 | DI | Master Out/Slave In (MOSI) |
| 4 | Vdd | Supply Voltage 2.7v / 3.6v |
| 5 | CLK | Clock |
| 6 | Vss | Ground |
| 7 | DO | Master In/Slave Out (MISO) |
| 8 | RSV | Reserved |
The SPI mode is optional in the microSD format.
|
The graphic to the right shows: The MicroSD form factors picture is used under GNU License |
 Comparison of SD Memory Card sizes SD Card, miniSD Card, microSD Card |
Mini and micro SD Card - EMI filtering and 25 kV ESD protection: EMIF06-mSD01F2, STMicroelectronics
Engineering Design Key words: microSD,miniSD, Memory Stick card, Memory Stick, Memory Stick Duo, MemoryStick PRO, Memory Stick pinout, MagicGate, MagicGate Memory Stick, Form Factor, SPI, pinout, Pin out Personal Computer Memory Card International Association, PC Card, Interconnect, Electrical layer, Interface Standard Data Bus, Standard, Specification, Spec, Interface, IC, Physical Interface, Description, Manufacturer, Personal Computer, PC, Pin-out, Connector Pins
|
|||||||
| Home | |||||||
|
|
|||||||
|
|
|
|
|
|
|
|
| Distributors | Components | Equipment | Software | Standards | Buses | Design | Reference |