SDSDM-64-J SanDisk, SDSDM-64-J Datasheet - Page 24

• Manufacturer Part Number: SDSDM-64-J
• Description: MEMORY CARD MINI SD 64MB
• Manufacturer: SanDisk

Specifications of SDSDM-64-J

• Memory Size: 64MB
• Memory Type: Memory Card - miniSD™
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

07/07, Rev. 2.1
Interface Description
Table 3-1
The SanDisk SD Card, miniSD Card, and microSD Card pin assignments in Table 3-2 below
are for SPI Mode.
Table 3-2
SD Card
miniSD Card
a. Type Key: S=power supply; I=input; O=output using push-pull drivers; PP=I/O using push-pull driv-
b. The extended DAT lines (DAT1-DAT3) are input on power up. They start to operate as DAT lines
c. At power up this line has a 50KOhm pullup enabled in the card. This resistor serves two functions:
Pin No.
Pin No.
ers.
after the SET_BUS_WIDTH command. It is the responsibility of the host designer to connect exter-
nal pullup resistors to all data lines even if only DAT0 is to be used. Otherwise, non-expected high
current consumption may occur due to the floating inputs of DAT1 & DAT2 (in case they are not
used).
Card detection and Mode Selection. For Mode Selection, the host can drive the line high or let it be
pulled high to select SD mode. If the host wants to select SPI mode it should drive the line low. For
Card detection, the host detects that the line is pulled high. This pull-up should be disconnected by
the user, during regular data transfer, with SET_CLR_CARD_DETECT (ACMD42) command.
10
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
SD Bus Mode Pin Assignment
SPI Mode Pin Assignment
DataOut
DataOut
DataIn
DataIn
Name
Name
SCLK
SCLK
DAT0
DAT1
CMD
V
V
V
V
RSV
RSV
RSV
RSV
CLK
V
V
V
V
CS
CS
NC
SS1
SS2
SS1
SS2
DD
DD
DD
SS
3-2
I/O/PP
I/O/PP
Type
O/PP
O/PP
Type
PP
—
—
—
—
—
S
S
S
S
S
S
S
S
I
I
I
I
I
I
I
a
SanDisk SD Card Product Family Product Manual
Command/Response
Supply Voltage
Clock
Supply Voltage Ground
Data Line [bit 1]
Data Line [bit 2]
Chip Select (active low)
Host-to-Card Commands and Data
Supply Voltage Ground
Supply Voltage
Clock
Supply Voltage Ground
Card-to-Host Data and Status
Reserved
Reserved
Chip Select (active low)
Host-to-Card Commands and Data
Supply Voltage Ground
Supply Voltage
Clock
Supply Voltage Ground
Card-to-Host Data and Status
Reserved
Reserved
For future use
Description
Description
© 2007 SanDisk Corporation