MMCplus

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.

Pinout

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.

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.