Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
825
32072H–AVR32–10/2012
AT32UC3A3
The SD Memory Card bus includes the signals listed in
.
Notes:
1. I: input, O: output, PP: Push Pull, OD: Open Drain.
Figure 31-6. SD Card Bus Connections with One Slot
Figure 31-7. SD Card Bus Connections with Two Slots
Table 31-3.
SD Memory Card Bus Signals
Pin
Number
Number
Name
Type
(1)
Description
MCI Pin Name
(2)
(Slot z)
1
CD/DAT[3]
I/O/PP
Card detect/ Data line Bit 3
DATAz[3]
2
CMD
PP
Command/response
CMDz
3
VSS1
S
Supply voltage ground
VSS
4
VDD
S
Supply voltage
VDD
5
CLK
I/O
Clock
CLK
6
VSS2
S
Supply voltage ground
VSS
7
DAT[0]
I/O/PP
Data line Bit 0
DATAz[0]
8
DAT[1]
I/O/PP
Data line Bit 1 or Interrupt
DATAz[1]
9
DAT[2]
I/O/PP
Data line Bit 2
DATAz[2]
2
9
3
456
7
8
SDCARD
1
CMD
CLK
DATA[3:0]
5
23
6
147
8
9
SDCARD1
5
23
6
14
7
8
9
SDCARD2
DATA[7:4]
CMD[0]
CLK
DATA[3:0]
CMD[1]
CLK