Datasheet

15
UNI-DS6
MikroElektronika
page
11. MMC/SD connector
The UNI-DS6 development system is capable of reading memory cards due to the
on-board MMC/SD connector� Memory card communicates with the microcontroller
through the microcontroller pins used for serial communication� In order to establish
connection between MMC/SD cards and the microcontroller, it is necessary to set
switches 1, 2 and 3 (optionally 4, 5 and 6) on the DIP switch SW14, as well as
switch 8 on the DIP switch SW13 to the ON position�
R126
100
R9
100K
R11
100K
R36
100K
R37
100K
R114
10K
VCC-MMC
MMC-CD#
MMC-CD#
MMC-CS#-3.3
MISO-3.3
CN13
MMC CARD
CS
Din
GND
+3.3V
SCK
GND
Dout
CD
G
COM
B0
B0
A0
A0
VCCB
VCCB
OE
OE
NC
NC
VCCA
VCCA
DIR
DIR
B1
B1
A1
A1
B2
B2
A2
A2
B3
B3
A3
A3
B5
B5
A5
A5
B6
B6
B7
B7
GND
GND
A6
A6
A7
A7
GND
GND
GND
GND
B4
B4
A4
A4
U14
U13
74LVCC3245
74LVCC3245
VCC-MMC
VCC-MMC
MMC-CS#-3.3
MMC-CS#-3.3
MMC-CS#
MOSI-3.3
MOSI-3.3
MOSI
MISO
MISO-3.3
SCK-3.3
SCK-3.3
SCK
VCC-BRD
VCC
VCC-BRD
C6
100nF
C7
100nF
C28
100nF
C27
100nF
VCC-MMC
C8
100nF
SW13
MMC-CS#
#CS2#
SW14
MOSIMOSI2
#MISO2
SCK2
MOSI1
#MISO1
SCK1
SCK
MISO
MISO
MOSI
SCK
RA4 RE4
RE2
RA12
RB4 RF12
RB12 RG4
RC4 RG12
RC12 RH4
RD4 RJ4
RD12
USB-VBUS
RA6
RA14 RF6
RB6 RF14
RB14 RG6
RC6 RG14
RC14 RH6
RD6 RJ6
RD14
#RX232A
#TX232A
#SCL
#SDA
#SS1#
SS1#
#SCK1
SCK1
#MISO1
MISO1
#MOSI1
MOSI1
USB-DP
RA0 RE0
RA8 RF0
RE6
RB0 RF8
RB8 RG0
RC0 RG8
RC8 RH0
RD0 RJ0
RD8
RA2
RA10 RF2
RF4
RB2 RF10
RB10 RG2
RC2 RG10
RC10 RH2
RD2 RJ2
RD10
RA5
RA13
RB5 RF13
RB13 RG5
RC5 RG13
RC13 RH5
RD5 RJ5
RD13
RA7
RA15 RF7
RF5
RF3
RB7 RF15
RB15 RG7
RC7 RG15
RC15 RH7
RD7 RJ7
RD15
#RX232B
#TX232B
#CS1#
#CS2#
#SS2#
SS2#
#SCK2
SCK2
#MISO2
MISO2
#MOSI2
MOSI2
USB-DN
RA1 RE1
RA9 RF1
RE7
RE5
RE3
RB1 RF9
RB9 RG1
RC1 RG9
RC9 RH1
RD1 RJ1
RD9
RA3
RA11
RB3 RF11
RB11 RG3
RC3 RG11
RC11 RH3
RD3 RJ3
RD11
VCC-SW VCC-5V
CN20 CN21
Figure 11-2: MMC/SD connector and microcontroller connection schematic
Figure 11-1: MMC/SD memory card