Datasheet

10
UNI-DS6
MikroElektronika
page
5. USB UART1 and USB UART2 modules
USB UART modules enable the UNI-DS6 development system to be connected to a PC via a USB connector� In
addition to PC, the development system can also be easily connected to other devices that use USB communication�
USB UART modules are connected to the microcontroller supplied on the development system via #RX232A and
#TX232A pins for USB UART1 or #RX232B and #TX232B for USB UART2�
In order to establish connection between the USB UART1 module and the
microcontroller, it is necessary to set switches 1 and 2 on the DIP switch SW13 to
the ON position� To connect the USB UART2 module and the microcontroller, it is
necessary to set switches 3 and 4 on the DIP switch SW13 to the ON position�
CN34
CN35
USB B
USB B
D+
D+
GND
GND
VCC
VCC
D-
D-
R18
4K7
R6
4K7
R19
10K
R7
10K
Bottom view
Bottom view
VCC
VCC
GND
GND
D+ D+
D- D-
VCC-BRD
VCC-BRD
VCC-5V
VCC-5V
OSCI
DTR#
OSCO
TXD
TEST
VCC
RTS#
DSR#
AGND
RESET#
VCCIO
DCD#
NC
GND
RXD
CTS#
CBUS1
USBDM
GND
CBUS2
GND
USBDP
NC
CBUS3
CBUS1
3V3OUT
RI#
CBUS4
FT232RL
U1
OSCI
DTR#
OSCO
TXD
TEST
VCC
RTS#
DSR#
AGND
RESET#
VCCIO
DCD#
NC
GND
RXD
CTS#
CBUS1
USBDM
GND
CBUS2
GND
USBDP
NC
CBUS3
CBUS1
3V3OUT
RI#
CBUS4
FT232RL
U2
VCC-5V
C1
100nF
VCC-5V
C14
100nF
VCC-BRD
C2
100nF
VCC-BRD
C15
100nF
C3
C16
100nF
100nF
VCC-5V
E5
10uF
VCC-5V
E7
10uF
RX-FTDI1
RX-FTDI1
RX-FTDI2
RX-FTDI2
TX-FTDI1
TX-FTDI1
TX-FTDI2
TX-FTDI2
#RX232A
#TX232A
#RX232B
#TX232B
SW13
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#
#SCK1
#MISO1
#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#
#SCK2
#MISO2
#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 5-2: USB UART modules connection schematic
Figure 5-1: USB UART modules