RS-MMC
From HwB
RS-MMC=Reduced Size MultiMediaCard
RS-MMC has been superseeded by MMCmobile. Which is backward compatible with RS-MMC, but has 13 pins instead of 7.
Size is 24mm x 18mm x 1.4mm.
Contents |
[edit] Pinout
[edit] MultiMedia Card Mode
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | RSV | Reserved for future use | |
| 2 | CMD |  PP) OD) | Data In |
| 3 | VSS |  | Supply voltage ground |
| 4 | VDD |  | Supply voltage |
| 5 | CLK | | Clock |
| 6 | VSS | | Supply voltage ground |
| 7 | DAT | PP) | Data |
Note: Direction is memory card relative to host.
PP) Push-pull.
OD) Open-drain.
[edit] SPI Mode
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | CS | | Chip Select |
| 2 | DI | PP) | Data In |
| 3 | VSS | | Supply voltage ground |
| 4 | VDD | | Supply voltage |
| 5 | CLK | | Clock |
| 6 | VSS | | Supply voltage ground |
| 7 | DAT | PP) | Data Out |
Note: Direction is memory card relative to host.
PP) Push-pull.