MIKROE-972 mikroElektronika, MIKROE-972 Datasheet - Page 29

• Manufacturer Part Number: MIKROE-972
• Description: Development Boards & Kits - ARM EASYMX PRO v7 ARM STELLARIS CORTEX-M3
• Manufacturer: mikroElektronika

Specifications of MIKROE-972

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: LM3S9B95
• Core: ARM Cortex M3
• Interface Type: CAN, I2C, SPI
• Operating Supply Voltage: 7 VAC to 23 VAC, 9 VDC to 32 VDC

EasyMx PRO
microSD card slot
Secure Digital (SD) is a non-volatile
memory card format developed for use
in portable devices. It comes in different
packages and memory capacities. It is
mostly used for storing large amounts of
data. EasyMx PRO
the microSD card slot. The microSD form
factor is the smallest card format currently
available. It uses standard SPI user inter-
face with minimum additional electronics,
mainly used for stabilizing communication
lines which can be significantly distorted
at high transfer rates. Ferrite and tantalum
capacitor are also provided to compensate
the voltage and current glitch that can
occur when pushing-in and pushing-out
microSD card into the socket.
™
v7 for Stellaris
v7
®
features
In order to access microSD card, you
must enable SPI communication
lines using SW13.1 – SW13.3 DIP
switches as well as Chip Select (CS)
and Card Detect (CD) lines using
SW13.8 and SW13.7 switches.
Enabling microSD
Figure 15-2:
enabling
microSD
card commu-
nication
lines
Figure 15-1:
microSD card slot
connection schematic
VCC-3.3V
FERRITE
FP3
DATA BUS
VCC-MMC
E12
10uF
SD-CS#
SPI-MOSI
SPI-SCK
SPI-MISO
SD-CD#
C33
100nF
R53
10K
R58 27
PA5
PA4
PA2
PH7
PA7
R54
10K
VCC-MMC
SW13
1
2
4
5
6
7
+3.3V
+3.3V
CS
Din
SCK
GND
Dout
CD
MICROSD
CN14
SPI-MOSI
SPI-MISO
SPI-SCK
SD-CD#
SD-CS#
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