MMCplus
From HwB
MMC = MultiMediaCard
MMCplus was defined for first time in MMC System Specification v4.0. MMCplus is backward compatible with MMC.
VCC=1.7-3.6 VDC
Size is 32 x 24 x 1.4 mm.
Contents |
[edit] Pinout
[edit] MultiMedia Card Mode
| Pin | Name | Dir | Description |
|---|---|---|---|
| 1 | DAT3 |  PP) | Data bit 3 |
| 2 | CMD | PP) OD) | Command/Response |
| 3 | VSS |  | Supply voltage ground |
| 4 | VDD |  | Supply voltage |
| 5 | CLK | | Clock |
| 6 | VSS | | Supply voltage ground |
| 7 | DAT0 | PP) | Data bit 0 |
| 8 | DAT1 | PP) | Data bit 1 |
| 9 | DAT2 | PP) | Data bit 2 |
| 10 | DAT4 | PP) | Data bit 4 |
| 11 | DAT5 | PP) | Data bit 5 |
| 12 | DAT6 | PP) | Data bit 6 |
| 13 | DAT7 | PP) | Data bit 7 |
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 (Active Low) |
| 2 | DI | PP) | Data In |
| 3 | VSS | | Supply voltage ground |
| 4 | VDD | | Supply voltage |
| 5 | CLK | | Clock |
| 6 | VSS | | Supply voltage ground |
| 7 | DO |  PP) | Data Out |
| 8 | n/c | Not used | |
| 9 | n/c | Not used | |
| 10 | n/c | Not used | |
| 11 | n/c | Not used | |
| 12 | n/c | Not used | |
| 13 | n/c | Not used |
Note: Direction is memory card relative to host.
PP) Push-pull.