Comparison of Removable Memory Card sizes
Memory Stick is another type of Removable NAND-type small flash memory card format which was introduced in 1998. There are a few different Memory Stick formats: the Standard-size Memory Stick media measures 50.0mm x 21.5mm x 2.8mm [Width x Height x Depth], and the Memory Stick Duo media measures 31.0mm x 20.0mm x 1.6mm [Width x Height x Depth]. Pins 1 and 10 are longer then the other pins so ground is the first pin to make contact and the last to break contact. Pin 6 is recessed and make contact last as the stick is inserted. The pins are flat electrodes. The maximum transfer rate is 2.54MBps, with a maximum clock frequency of 40MHz. Memory Stick requires a power supply voltage of 2.7v to 3.6 volts.
| Pin # | Pin Name | Signal Function |
| 1 | Vss | Ground |
| 2 | BS | Bus State |
| 3 | DATA1 | Data Line 1 |
| 4 | SDIO / DATA0 | Serial Data In/Out, Data Line 0 |
| 5 | DATA2 | Data Line 2 |
| 6 | INS | Insertion Detection pin |
| 7 | DATA3 | Data Line 3 |
| 8 | SCLK | Serial Clock |
| 9 | Vcc | Power |
| 10 | Vss | Ground |
Comparison of Removable Memory Card sizes
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